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158results about How to "Effective health monitoring" patented technology
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Progressive health monitoring method for cable system based on hybrid monitoring during generalized displacement of support
InactiveCN102221478AMonitor and evaluate health statusObvious non-linear featuresStructural/machines measurementMulti objective optimization algorithmLinear relationship
The invention provides a progressive health monitoring method for a cable system based on hybrid monitoring during generalized displacement of a support. Whether a mechanics calculation benchmark model of the structure requires to be updated against is decided by monitoring of a generalized coordinates of the structural support; considering the similar linear relationship among the current data vector of the monitored quantity and the initial value vector of the monitored quantity, the unit damage monitored quantity change matrix and the current nominal damage vector, in order to overcome the defects, a method using the linear relationship to approach the nonlinear relationship by section is adopted so that a large section is divided into a plurality of continuous small sections; the linear relationship in each small section is sufficiently accurate; and suitable algorithms such as a multi-objective optimization algorithm and the like can be utilized in each small section so as to calculate the non-inferior solution of the damage vector of the current cable, thus exactly determining the position and the damage degree of a damaged cable.
Owner:SOUTHEAST UNIV
Healthy monitoring method of rope system based on angle monitoring during support settlement
InactiveCN101782472AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementUsing mechanical meansMulti objective optimization algorithmReference model
The invention relates to a healthy monitoring method of a rope system based on angle monitoring during support settlement, which is based on the angle monitoring and determines whether a mechanical calculation reference model of a structure needs to be updated or not by monitoring the coordinates of a support of the structure. Only when the coordinates of the support of the structure are changed, the mechanical calculation reference model of the structure is updated, thereby obtaining a novel mechanical calculation reference model of the structure, which is reckoned in the support settlement of the structure. On the basis of the model, a change matrix of the unit damage quantity to be monitored is obtained by calculation. According to an approximately linear relationship existing among the vector of the current numerical value of the quantity to be monitored, the initial vector of the quantity to be monitored, the change matrix of the unit damage quantity to be monitored, a unit damage scalar and the current damage vector to be resolved of the rope system, the non-inferior solution of the current rope damage vector can be quickly calculated by utilizing the proper algorithms of a multi-objective optimization algorithm and the like, so that the position of a damaged rope and the damage degree thereof can be more accurately determined during the support settlement.
Owner:华新建工集团有限公司 +1
Space coordinate monitoring based cable system health monitoring method applied in supporting seat generalized displacement
InactiveCN102323080AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementReference modelControl engineering
The invention discloses a space coordinate monitoring based cable system health monitoring method applied in supporting seat generalized displacement. The need of updating a mechanical calculation reference model of a structure is decided by monitoring the supporting seat generalized coordinates of the structure, based on space coordinate monitoring, and the mechanical calculation reference model of the structure is updated only when the supporting seat generalized coordinates of the structure vary, so that a new mechanical calculation reference model of the structure included in the supporting seat generalized coordinates of the structure is obtained, and a unit damage monitored quantity variance matrix is obtained by calculating on the basis of the model. A noninferior solution of a current cable damage vector can be calculated quickly with appropriate algorithms such as a multi-target optimization algorithm and the like according to approximate linear relations between a current numeric vector of a monitored quantity and an initial vector of the monitored quantity, the unit damage monitored quantity variance matrix, a unit damage scalar quantity and a cable system current damage vector to be resolved, so that the position and damage degree of the damaged cable can be determined accurately relatively when supporting seat generalized displacement occurs.
Owner:SOUTHEAST UNIV
Cable force monitoring based damaged cable recognizing method applied in supporting seat generalized displacement
InactiveCN102323078AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementApparatus for force/torque/work measurementReference modelLinear relationship
The invention discloses a cable force monitoring based damaged cable recognizing method applied in the supporting seat generalized displacement. The need of updating a mechanical calculation reference model of a structure is decided by monitoring the supporting seat generalized coordinates of the structure, based on cable force monitoring, and the mechanical calculation reference model of the structure is updated only when the supporting seat generalized coordinates of the structure vary, so that a new mechanical calculation reference model of the structure included in the supporting seat generalized coordinates of the structure is obtained, and a unit damage monitored quantity variance matrix is obtained by calculating on the basis of the model. A noninferior solution of a current cable damage vector can be calculated quickly with appropriate algorithms such as a multi-target optimization algorithm and the like according to approximate linear relations between a current numeric vector of a monitored quantity and an initial vector of the monitored quantity, the unit damage monitored quantity variance matrix, a unit damage scalar quantity and a cable system current damage vector to be resolved, so that the position and damage degree of the damaged cable can be determined accurately relatively when supporting seat generalized displacement occurs.
Owner:SOUTHEAST UNIV
Progressive generalized displacement identification method for problem cables and support based on temperature change tension force monitoring
InactiveCN102735459AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementApparatus for force/torque/work measurementReference modelLinear relationship
The invention discloses a progressive generalized displacement identification method for problem cables and a support based on temperature change tension force monitoring. The progressive generalized displacement identification method is used for deciding whether to update a mechanical calculation reference model of a cable structure through monitoring a cable structure temperature, an environment temperature and a heath state of an evaluated object, thus obtaining the mechanical calculation reference model of the cable structure including the cable structure temperature and the environment temperature; and a unit change matrix of a unit damage monitored quantity is obtained through calculation on the basis of the mechanical calculation reference model. A noninferior solution of a current nominal damage vector of the evaluated object is figured out according to an approximate linear relationship existing among a current value vector of a monitored quantity, a current initial value vector of the monitored quantity, the unit change matrix of the unit damage monitored quantity, a unit damage or unit generalized displacement vector and a current nominal damage vector of the to-be-solved evaluated object, therefore, generalized displacements of the damaged cable, the slack cable and the support can be rapidly identified when temperature changes exist.
Owner:SOUTHEAST UNIV
Progressive method for identifying slack cable on the basis of angle monitoring during support generalized displacement
InactiveCN102323089AReliable health statusEffective health monitoring is beneficialStructural/machines measurementTension measurementLinear relationshipNondestructive testing
The invention provides a progressive method for identifying a slack cable on the basis of angle monitoring during support generalized displacement. According to angle monitoring, taking into consideration the fact that linear relationships between the current value vector of the monitored amount and an initial value vector of the monitored amount, a virtual unit damage monitored amount variation matrix and the current nominal virtual damage vector are approximate with each other through monitoring the support generalized coordinate of the structure during identifying the loose supporting cable, the invention provides a method for approaching nonlinear relation in a sectional way by using the linear relationships in order to overcome the defects. By using the method, the virtual damaged cable can be identified; after the real damaged cable is distinguished by using a nondestructive testing method and other methods, the rest virtual damaged cables are loose supporting cables; and then the cable length needing to be adjusted can be determined according to the relationship between the looseness degree and the virtual damage degree.
Owner:SOUTHEAST UNIV
Damaged cable and support translation progressive identification method on basis of angle monitoring during temperature variation
InactiveCN102706595AEffective structural health monitoringEffective health monitoringStructural/machines measurementReference modelEngineering
The invention relates to a damaged cable and support translation progressive identification method on the basis of the angle monitoring during temperature variation. According to the damaged cable and support translation progressive identification method, on the basis of the angle monitoring, the translation displacement of a support, the temperatures of cable structures, the environment temperature and the damage degrees of damaged cables are monitored to determine whether a mechanical calculation reference model of the cable structures needs to be updated so as to obtain a novel mechanical calculation reference model of the cable structures, in which the translation displacement of the support, the damage degrees of the damaged cables and the temperatures of the cable structures are counted; and on the basis of the new model, according to approximate linear relations between a current value vector of a monitored quantity and a current initial value vector of the monitored quantity, a value unit change matrix of the unit damage monitored quantity and a current nominal damage vector to be obtained, when the temperature is changed, the damaged cables and the translation displacement of the support can be accurately identified.
Owner:SOUTHEAST UNIV
Health monitoring method of cable system based on cable force monitoring during support settlement
InactiveCN101793620AMonitor and evaluate health statusEffective Health MonitoringForce measurementStructural/machines measurementLinear relationshipEngineering
The invention relates to a health monitoring method of a cable system based on cable force monitoring during support settlement; the health monitoring method is based on the cable force monitoring and decides whether the mechanical calculation benchmark module of a structure needs to be updated or not by the coordinates of the support of the monitoring structure; only when the coordinates of the support of the structure changes, the mechanical calculation benchmark module of the structure is updated, thus obtaining the new mechanical calculation benchmark module of the structure, which records the support settlement of the structure; based on the module, a unit damage monitored quantity transformation matrix is obtained by calculation. According to the approximately linear between the current numerical value vector of the monitored quantity and the initial vector of the monitored quantity, a unit damage monitored quantity transformation matrix, a unit damage scalar and the unknown current damage vector of the cable system, the noninferior solution of the current cable damage vector can be quickly figured out by using appropriate algorithms such as a multiple target optimization algorithm; and accordingly, the position and the damage degree of the damaged cable can be more accurately determined when the support settles.
Owner:华新建工集团有限公司 +1
Health monitoring method of cable system based on mixed monitoring in presence of support seat settlement
ActiveCN101806663AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementUsing mechanical meansMulti objective optimization algorithmLinear relationship
The invention relates to a health monitoring method of a cable system based on mixed monitoring in the presence of support seat settlement. Whether a mechanical calculation standard model with an updated structure is needed or not is determined on the basis of mixed monitoring through monitoring the coordinates of a structural support seat, and the structure of the mechanical calculation standard model needs to be updated only when the coordinates of the structural support seat are changed, so a novel mechanical calculation standard model with the structure metered into the settlement of the structure support seat is obtained, and the unit damage monitored quantity change matrices are obtained through the calculation on the basis of the model. According to the approximate linear relationship of the monitored current value vector and the monitored initial vector, unit damage monitored quantity change matrices, unit damage scalar quantity and current damage vector of the cable system to be solved, proper algorithms such as the multi-objective optimization algorithm and the like can be utilized for fast calculating the noninferior solution of the current cable damage, and thereby, the position and the damage degree of the damaged cable can be accurately determined in the presence of the support seat settlement.
Owner:江苏大公建设有限公司 +1
Progressive health monitoring method of cable system for spatial coordinate monitoring of bearing angular displacement
InactiveCN102288426AMonitor and evaluate health statusObvious non-linear featuresStructural/machines measurementApparatus for force/torque/work measurementLinear relationshipEmergency medicine
The progressive health monitoring method of the cable system based on the spatial coordinate monitoring of the angular displacement of the support is based on the spatial coordinate monitoring. By monitoring the angular coordinates of the structural support, it is determined whether it is necessary to update the mechanical calculation benchmark model of the structure again, taking into account the current situation of the monitored quantity. The numerical vector is similar to the linear relationship between the initial numerical vector of the monitored quantity, the unit damage monitored quantity change matrix and the current nominal damage vector. The method divides the large interval into continuous small intervals. The above linear relationship is accurate enough in each small interval. In each small interval, appropriate algorithms such as multi-objective optimization algorithms can be used to calculate the current cable damage. The non-inferior solution of the vector, according to which the position of the damaged cable and its damage degree can be determined more accurately.
Owner:SOUTHEAST UNIV
Damaged cable and supporting seat translation progressive-type identification method based on space coordinate monitoring at moment of temperature variation
InactiveCN102706575AEffective structural health monitoringEffective health monitoringStructural/machines measurementThermometer applicationsEngineeringLinearity
The invention relates to a damaged cable and supporting seat translation progressive-type identification method based on the space coordinate monitoring at the moment of temperature variation, which is based on the space coordinate monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the translation displacement of a supporting seat and monitoring the temperature of the cable structure, the ambient temperature and the damage degree of the damaged cable, a novel mechanical calculation benchmark model considering the translation displacement of the supporting seat, the damage degree of the damaged cable and the temperature of the cable structure is obtained, and then the damaged cable and the translation displacement of the supporting seat are accurately identified on the basis of the model according to an approximate linear relation between the moment numerical value vector of a monitored parameter and the moment initial numerical value vector of the monitored parameter and between a unit damage monitored parameter numerical value unit variation matrix and a moment nominal damage vector to be solved when the temperature is changed.
Owner:SOUTHEAST UNIV
Progressive identification method for slack cables based on hybrid monitoring of angular support displacement and temperature change
InactiveCN102735462AEffective health monitoringStructural/machines measurementThermometer applicationsReference modelMulti objective optimization algorithm
The invention discloses a progressive identification method for slack cables based on hybrid monitoring of angular support displacement and temperature change. The progressive identification method can be used for deciding whether to update a mechanical calculation reference model of a cable structure through monitoring angular support displacement, a cable structure temperature, an environment temperature and a heath degree of a support cable. A noninferior solution of a current nominal damage vector is rapidly figured out according to an approximate linear relationship existing among a current value vector of a monitored quantity, a current initial value vector of the monitored quantity, a unit damage monitored quantity change matrix and a to-be-solved current nominal damage vector and by virtue of a multi-objective optimization algorithm and the like, therefore, virtual damaged cables can be identified when the angular support displacement and the temperature change exist, and after an actual damaged cable is identified by methods of nondestructive testing and the like, remained virtual damaged cables are the slack support cables; and the to-be-regulated cable lengths of the slack support cables can be determined according to a mechanical equivalent relationship.
Owner:SOUTHEAST UNIV
Strain monitoring-based progressive method for identifying slack cables during generalized displacement of support saddle
ActiveCN102252863AMonitor and evaluate health statusObvious non-linear featuresStructural/machines measurementLinear relationshipStructural engineering
The invention relates to a strain monitoring-based progressive method for identifying slack cables during generalized displacement of a support saddle, and is based on strain monitoring and performed by monitoring generalized coordinates of the support saddle of the structure. When slack support cables are identified, in view of the situation that the linear relation between a current numerical value vector of a monitored quantity and an initial numerical value vector of the monitored quantity is similar to that between a numerical value change matrix of the monitored quantity of virtual unitinjures and a current nominal virtual injury vector, the method of approaching the non-linear relation in a sectional manner by using the linear relation is given out for overcoming the defect, then virtually injured cables can be identified, after really injured cables are identified by using the non-destructive detection and other methods, the remaining virtually injured cables are the slack support cables and the cable length which needs to be adjusted can be determined according to the relation between the slack degree and the virtual injure degree.
Owner:海安县金鹏机械有限公司 +1
Health monitoring method of cable system based on strain monitoring during support settlement
InactiveCN101788399AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementUsing mechanical meansCoordinate changeMulti objective optimization algorithm
The invention discloses a health monitoring method of a cable system based on strain monitoring during support settlement, which is based on strain monitoring, and determines whether to update a mechanical calculation baseline model of the structure through monitoring a structure support coordinate; the mechanical calculation baseline model of the structure is updated only when the structure support coordinate changes, thereby a new mechanical calculation baseline model which is included in the structure of the structure support settlement is obtained, and a unit damage monitored-volume change matrix is calculated and obtained on the basis of the model. According to the approximate linear relationship between the current value vector of the monitored-volume and the initial vector of the monitored-volume, the unit damage monitored-volume change matrix, the unit damage scalar and the to-be-calculated current damage vector of the cable system, the non-inferior solution of the current cable damage vector can be calculated rapidly through the multi-objective optimization algorithm and other appropriate algorithms, accordingly, the location and the damage degree of the damaged-cable can be determined accurately during support settlement.
Owner:华新建工集团有限公司 +1
Problem cable and supporting seat generalized displacement identification method based on space coordinate monitoring at moment of temperature variation
InactiveCN102706594AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementThermometer applicationsLinear relationEngineering
The invention relates to a problem cable and supporting seat generalized displacement identification method based on space coordinate monitoring at moment of temperature variation, which is based on the space coordinate monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure and the ambient temperature, the mechanical calculation benchmark model of the cable structure counting the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through calculation on the basis of the model. The non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to an approximate linear relation respectively between a monitored parameter moment numerical value vector and a monitored parameter moment initial numerical value vector and between the unit damage monitored parameter unit variation matrix, unit damage or a unit generalized displacement vector and the moment nominal damage vector of the estimated target to be solved, and thus a damaged cable, a loosened cable and the supporting seat generalized displacement can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
Health monitoring method of cable system based on cable force monitoring during bearing angular displacement
InactiveCN102288435AMonitor and evaluate health statusEffective Health MonitoringStructural/machines measurementApparatus for force/torque/work measurementLinear relationshipStructural engineering
Owner:SOUTHEAST UNIV
Identification method for problem cables and angular support displacement on basis of temperature variation and cable force monitoring
InactiveCN102735461AEffective health monitoringAccurate monitoring, evaluation and identificationThermometers using value differencesStructural/machines measurementReference modelEngineering
The invention provides an identification method for problem cables and angular support displacement on the basis of temperature variation and cable force monitoring. The identification method comprises the following steps of: determining whether to update a mechanical calculation reference model of a cable structure or not through monitoring a cable structure temperature and an environmental temperature, thus obtaining the mechanical calculation reference model of the cable structure, including the cable structure temperature and the environmental temperature; figuring out a unit change matrix of a unit damage monitored quantity on the basis of the reference model; figuring out a non-inferior solution of a current nominal damage vector of an to-be-solved evaluated object according to an approximate linear relation among a current numerical vector of the monitored quantity, a current initial numerical vector of the monitored quantity, the unit change matrix of the unit damage monitored amount, a unit damage or unit angular displacement vector and the current nominal damage vector of the to-be-solved evaluated object; and rapidly identifying the damaged cable, the loosened cable and the angular support displacement according to the relation when the temperatures change.
Owner:SOUTHEAST UNIV
Health monitoring method of cable system based on space coordinate monitoring during support settlement
InactiveCN101789054AMonitor and evaluate health statusEffective Health MonitoringUsing mechanical meansTension measurementCoordinate changeMulti objective optimization algorithm
The invention discloses a health monitoring method of a cable system based on space coordinate monitoring during support settlement, which is based on space coordinate monitoring, and determines whether to update a mechanical calculation baseline model of the structure through monitoring a structure support coordinate; the mechanical calculation baseline model of the structure is updated only when the structure support coordinate changes, thereby a new mechanical calculation baseline model which is included in the structure of the structure support settlement is obtained, and a unit damage monitored-volume change matrix is calculated and obtained on the basis of the model. According to the approximate linear relationship between the current value vector of the monitored-volume and the initial vector of the monitored-volume, the unit damage monitored-volume change matrix, the unit damage scalar and the to-be-calculated current damage vector of the cable system, the non-inferior solution of the current cable damage vector can be calculated rapidly through the multi-objective optimization algorithm and other appropriate algorithms, accordingly, the location and the damage degree of the damaged cable can be determined accurately during support settlement.
Owner:SOUTHEAST UNIV
Problem cable and supporting seat generalized displacement identification method based on angle monitoring at moment of temperature variation
InactiveCN102706600AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementEngineeringLinearity
The invention relates to a problem cable and supporting seat generalized displacement identification method based on angle monitoring at moment of temperature variation, which is based on the angle monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure and the ambient temperature, the mechanical calculation benchmark model of the cable structure based on the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through calculation on the basis of the model. The non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to a monitored parameter moment numerical value vector and an approximate linear relation among a monitored parameter moment initial numerical value vector, the unit damage monitored parameter unit variation matrix, unit damage or a unit generalized displacement vector and the moment nominal damage vector of the estimated target to be solved, and thus a damaged cable, a loosened cable and the supporting seat generalized displacement can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
Problem cable supporting seat generalized displacement progressive-type identification method based on space coordinate monitoring at moment of temperature variation
InactiveCN102706629AEffective health monitoringAccurate monitoring, evaluation and identificationThermometers using value differencesStructural/machines measurementLinear relationEngineering
The invention relates to a problem cable supporting seat generalized displacement progressive-type identification method based on space coordinate monitoring at the moment of temperature variation, which is based on the space coordinate monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure, the ambient temperature and the health situation of an estimated target, the mechanical calculation benchmark model of the cable structure counting the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through the calculation on the basis of the model. The non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to an approximate linear relation respectively between the monitored parameter moment numerical value vector and the monitored parameter moment initial numerical value vector and between the unit damage monitored parameter unit variation matrix, unit damage or unit generalized displacement vector and the nominal damage vector of the estimated target to be solved, so that a damaged cable, a loosened cable and the generalized displacement of the supporting seat can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
Problem cable and supporting seat generalized displacement progressive-type identification method based on angle monitoring at moment of temperature variation
InactiveCN102706601AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementEngineeringLinearity
The invention relates to a problem cable and supporting seat generalized displacement identification method based on angle monitoring at moment of temperature variation, which is based on the angle monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure, the ambient temperature and a health situation of an estimated target, the mechanical calculation benchmark model of the cable structure counting the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through calculation on the basis of the model. The non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to an approximate linear relation respectively between a monitored parameter moment numerical value vector and a monitored parameter moment initial numerical value vector and between the unit damage monitored parameter unit variation matrix, unit damage or a unit generalized displacement vector and the moment nominal damage vector of the estimated target to be solved, and thus a damaged cable, a loosened cable and the supporting seat generalized displacement can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
Damaged cable and support translation progressive identification method on basis of hybrid monitoring during temperature variation
InactiveCN102706637AEffective structural health monitoringEffective health monitoringStructural/machines measurementThermometer applicationsReference modelEngineering
The invention relates to a damaged cable and support translation progressive identification method on the basis of the hybrid monitoring during temperature variation. According to the damaged cable and support translation progressive identification method, on the basis of the hybrid monitoring, the translation displacement of a support, the temperatures of cable structures, the environment temperature and the damage degrees of damaged cables are monitored to determine whether a mechanical calculation reference model of the cable structures needs to be updated so as to obtain a novel mechanical calculation reference model of the cable structures, in which the translation displacement of the support, the damage degrees of the damaged cables and the temperature are counted; and on the basis of the new model, according to approximate linear relations between a current value vector of a monitored quantity and a current initial value vector of the monitored quantity, a value unit change matrix of the unit damage monitored quantity and a current nominal damage vector to be obtained, when the temperature is changed, the damaged cables and the translation displacement of the support can be accurately identified.
Owner:SOUTHEAST UNIV
Method and system for monitoring voltage transformer
InactiveCN108226844AEffective health monitoringImprove work efficiencyElectrical measurementsTransformerEngineering
The invention discloses a method and system for monitoring a voltage transformer. The method comprises the following steps: receiving a first voltage signal and a second voltage signal of a voltage transformer; determining first current data corresponding to the first voltage signal and second current data corresponding to the second voltage signal; determining whether the operation status of thevoltage transformer is normal or not by analyzing the first current data and the second current data. The method and the system for monitoring the voltage transformer, disclosed by the invention, havethe advantages that the technical problem that the operation status of the voltage transformer cannot be effectively monitored by an existing monitoring mode is solved.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2
Defective cable and support angular displacement identification method based on mixed monitoring of temperature change
InactiveCN102706661AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementThermometer applicationsReference modelLinear relationship
The invention discloses a defective cable and support angular displacement identification method based on mixed monitoring of temperature change. The method comprises the following steps of: on the basis of mixed monitoring, judging whether a mechanical calculation reference model of a cable structure is required to be updated by monitoring the temperature of the cable structure and environment temperature, and thus obtaining the mechanical calculation reference model of the cable structure, into which the temperature of the cable structure and the environment temperature are recorded; and on the basis of the mechanical calculation reference model, acquiring a unit damage monitored amount unit change matrix by calculation. A non-inferior solution of the current nominal damage vector of an evaluated object is obtained by calculation according to an approximately linear relationship between the current value vector of monitored amount, the current initial value vector of the monitored amount, the unit damage monitored amount unit change matrix, a unit damage or unit angular displacement vector and the to-be-obtained current nominal damage vector of the evaluated object, so a damaged cable, a loosened cable and support angular displacement can be quickly identified when the temperature change occurs.
Owner:SOUTHEAST UNIV
Problematic cable and support angular displacement identifying method based on strain monitoring at time of temperature change
InactiveCN102735476AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementThermometer applicationsQuantity UnitLinear relationship
The invention relates to a problematic cable and support angular displacement identifying method based on strain monitoring at the time of temperature change. The method comprises the following steps: based on strain monitoring, determining whether a mechanical calculation reference model of a cable structure needs to be updated through monitoring cable structure temperature and environment temperature so as to obtain a mechanical calculation reference model of the cable structure in which the cable structure temperature and the environment temperature are included; and based on the model, performing calculation to obtain an unit damage monitored quantity unit change matrix; calculating a non-inferior solution of the conventional nominal damage vector of an evaluated object according to the approximate linear relationship existing between the monitored quantity current numerical value vector, and monitored quantity current initial numerical valve vector, unit damage monitored quantity unit change matrix, unit damage or angular displacement vector and to-be-solved evaluated object current nominal damage vector; and on the basis, rapidly identifying a damaged cable, a slack cable and the support angular displacement at the time of temperature change.
Owner:SOUTHEAST UNIV
Health Monitoring Method of Cable System Based on Coordinate Monitoring During Bearing Angular Displacement
InactiveCN102288429AEffective health monitoring is beneficialMonitor and evaluate health statusStructural/machines measurementApparatus for force/torque/work measurementLinear relationshipAlgorithm
The health monitoring method of the cable system based on spatial coordinate monitoring during the angular displacement of the support is based on spatial coordinate monitoring. By monitoring the angular coordinates of the structural support, it is determined whether the mechanical calculation benchmark model of the structure needs to be updated. Only when the angular coordinates of the structural support change The mechanical calculation benchmark model of the structure is updated to obtain a new mechanical calculation benchmark model of the structure that takes into account the angular displacement of the structural support. On the basis of this model, the change matrix of the unit damage monitored quantity is calculated and obtained. According to the approximate linear relationship between the current value vector of the monitored quantity and the initial vector of the monitored quantity, the change matrix of the monitored quantity per unit damage, the unit damage scalar and the current damage vector of the cable system to be obtained, a suitable multi-objective optimization algorithm can be used The algorithm quickly calculates the non-inferior solution of the current cable damage vector, based on which the position of the damaged cable and its damage degree can be determined more accurately when there is angular displacement of the support.
Owner:SOUTHEAST UNIV
A Progressive Method for Identifying Slack Cables Based on Strain Monitoring During Angular Displacement of Bearings
InactiveCN102288432AMonitor and evaluate health statusObvious non-linear featuresStructural/machines measurementApparatus for force/torque/work measurementLinear relationshipNondestructive testing
The invention discloses a progressive method for distinguishing a slack cable based on strain monitoring in the angular displacement of a supporting seat. Based on the strain monitoring and through monitoring an angular coordinate of the supporting seat of a structure, when the progressive method is used for distinguishing a slack supporting cable, the condition that the linear relations between a current numerical vector of a monitored quantity and an initial numerical vector of the monitored quantity, as well as between a virtual unit damage numerical change matrix of the monitored quantityand a current nominal virtual damage vector are approximate is considered; in order to overcome the defect, a method for piecewise approaching a nonlinear relation by using the linear relations is given; a virtual damaged cable can be distinguished; after a real damaged cable is identified by using methods such as nondestructive examination and the like, the residual virtual damaged cable is the slack supporting cable; and according to the relation between a slackness degree and a virtual damage degree, the length of the cable needing to be adjusted can be determined.
Owner:JIANGSU HONGSHUN SYNTHETIC FIBER TECH +1
Problem cable and supporting seat generalized displacement identification method based on strain monitoring at moment of temperature variation
InactiveCN102706610AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementThermometer applicationsEngineeringLinearity
The invention relates to a problem cable and supporting seat generalized displacement identification method based on strain monitoring at moment of temperature variation, which is based on the strain monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure and the ambient temperature, the mechanical calculation benchmark model of the cable structure counting the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through the calculation on the basis of the model. Non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to an approximate linear relation respectively between a monitored parameter moment numerical value vector and a monitored parameter moment initial numerical value vector and between the unit damage monitored parameter unit variation matrix, unit damage or a unit generalized displacement vector and the moment nominal damage vector of the estimated target to be solved, and thus a damaged cable, a loosened cable and the generalized displacement of the supporting seat can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
Defective cable and support angular displacement identification method based on angular monitoring of temperature change
InactiveCN102706662AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementThermometer applicationsLinear relationshipLinearity
The invention discloses a defective cable and support angular displacement identification method based on angular monitoring of temperature change. The method comprises the following steps of: on the basis of angular monitoring, judging whether a mechanical calculation reference model of a cable structure is required to be updated by monitoring the temperature of the cable structure and environment temperature, and thus obtaining the mechanical calculation reference model of the cable structure, into which the temperature of the cable structure and the environment temperature are recorded; and on the basis of the mechanical calculation reference model, acquiring a unit damage monitored amount unit change matrix by calculation. A non-inferior solution of the current nominal damage vector of an evaluated object is obtained by calculation according to an approximately linear relationship between the current value vector of monitored amount, the current initial value vector of the monitored amount, the unit damage monitored amount unit change matrix, a unit damage or unit angular displacement vector and the to-be-obtained current nominal damage vector of the evaluated object, so a damaged cable, a loosened cable and support angular displacement can be quickly identified when the temperature change occurs.
Owner:SOUTHEAST UNIV
Problem cable and supporting seat generalized displacement identification method based on cable tension monitoring at moment of temperature variation
InactiveCN102706611AEffective health monitoringAccurate monitoring, evaluation and identificationStructural/machines measurementApparatus for force/torque/work measurementCable tensionLinear relation
The invention relates to a cable and supporting seat generalized displacement identification method based on cable tension monitoring at moment of temperature variation, which is based on the cable tension monitoring. The method is characterized in that whether a mechanical calculation benchmark model of a cable structure is required to update or not is determined by monitoring the temperature of the cable structure and the ambient temperature, the mechanical calculation benchmark model of the cable structure counting the temperature of the cable structure and the ambient temperature is obtained, and a unit damage monitored parameter unit variation matrix is obtained through the calculation on the basis of the model. The non-inferior solution of a moment nominal damage vector of an estimated target is calculated according to an approximate linear relation respectively between a monitored parameter moment numerical value vector and a monitored parameter moment initial numerical value vector and between the unit damage monitored parameter unit variation matrix, unit damage or a unit generalized displacement vector and the moment nominal damage vector of the estimated target to be solved, and thus a damaged cable, a loosened cable and the generalized displacement of the supporting seat can be quickly identified when the temperature is changed.
Owner:SOUTHEAST UNIV
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