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66results about How to "Strong engineering achievability" patented technology
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Passive sensor networking detection multi-target method
ActiveCN102997911ATake advantage of target motion propertiesStrong engineering achievabilityNavigation instrumentsSensor networkingMultiple platform
The invention discloses a passive sensor networking detection multi-target method. A passive sensor networking system carries out intersection positioning by using a direction-finding intersection method according to angle information provided by a sensor; a ghost point is eliminated by using information redundancy static between multiple platforms; subsequently the ghost point is dynamically eliminated by using a virtual flight path tracking technique, so as to realize the accurate positioning and tracking on multiple targets. The method for eliminating the ghost point comprises the steps of: calculating each flight path tracking door; carrying out association processing on point targets (obtained from the intersection positioning) with each grade of flight path files in sequence in accordance with the flight path grades from high grade to low grade; and starting, combining, cutting, branching and deleting the flight path according to the association situation. The passive sensor networking detection multi-target method has the following advantages that target movement characteristics are sufficiently utilized, the ghost point is dynamically eliminated in the target tracking process, the engineering is strong in realizability, and the ghost point can be effectively eliminated under the condition that the targets are dense or measuring noise exists.
Owner:CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
Method for building normal gestures of under-actuated high-speed spinning satellite
ActiveCN103112603AStrong engineering achievabilityPromote engineering applicationSpacecraft guiding apparatusMagnetic tension forceMomentum
The invention discloses a method for building normal gestures of an under-actuated high-speed spinning satellite. The method for building the normal gestures of the under-actuated high-speed spinning satellite comprises the following steps: (1) a spinning shaft of the under-actuated satellite is confirmed by means of output data of a gesture sensor; (2) an under-actuated shaft and a normal shaft are confirmed; (3) under-actuated spinning counteraction of the satellite is conducted and the satellite is controlled until the spinning top breaks away from saturation; (4) after the spinning top breaks away from saturation, under-actuated control is conducted on triaxial angle speeds; (5) quaternions of initial gestures are confirmed and renewed; (6) a momentum wheel is adopted to conduct gesture capture and magnetic torquer unloading, the satellite gestures are confirmed, and the satellite is recovered to normal triaxial stable gestures to the earth. The method for building the normal gestures of the under-actuated high-speed spinning satellite solves the problem that an under-actuated satellite with a certain channel losing air-injecting control ability recovers normal gestures.
Owner:BEIJING INST OF CONTROL ENG
Fault diagnosis method for gyro measurement system
ActiveCN103234553AImprove fault diagnosis rateStrong engineering achievabilityMeasurement devicesDiagnosis methodsWeight coefficient
The invention discloses a fault diagnosis method for a gyro measurement system. The method comprises the steps of: (1) determine the configuration type of gyros, and then calculating the angle relationship between the gyros; (2) determining the weight coefficient of a gyro balance equation; (3) determining judgment gyro sequencing; (4) designing a balance equation according to the determined judgment gyro sequencing result in step (3); and (5) designing a fault diagnosis method. The method provided in the invention can substantially improve the probability of gyro fault diagnosis, has strong project realizability, and can adapt to fault diagnoses of gyros with any complex configuration.
Owner:BEIJING INST OF CONTROL ENG
Optical imaging method integrating three-dimensional mapping and broad width imaging
InactiveCN103076005AImprove efficiencyBreak through usage restrictionsPhotogrammetry/videogrammetryStereoscopic photographyMultiplexingResource utilization
The invention discloses an optical imaging method integrating three-dimensional mapping and broad width imaging. According to the invention, two or three line-scan digital cameras are installed on a satellite within certain interaction angles; each line-scan digital camera is provided with a first imaging detector for three-dimensional mapping and a second imaging detector for broad width imaging, and the conversion between the two imaging detectors are realized by cutting in a reflecting mirror; when the three-dimensional mapping is performed, the satellite flies in a normal attitude, and the imaging detection is realized through the first imaging detector of each line-scan digital camera; and when the broad width monitoring is performed, the satellite flies by yawing a certain angles and converts light paths by cutting in the reflecting mirror, adjacent air strips on the ground are sequentially imaged through the second imaging detector of each line-scan digital camera, and equivalently a wide air strip on the ground is imaged in a segmentation spliced manner, and accordingly the imaging width is remarkably increased. The optical imaging method integrating three-dimensional mapping and broad width imaging realizes multiplexing of the single-satellite function and improves the utilization ratio of on-orbit resources.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
Method for calibrating satellite navigation digital multi-beam launching array antenna phase center
ActiveCN103064089AHigh measurement accuracyStrong engineering achievabilitySatellite radio beaconingRemote sensingSpread spectrum
The invention discloses a method for calibrating a satellite navigation digital multi-beam launching array antenna phase center. Aiming at the effect of the launching array antenna phase center on satellite navigation high-precision ranging property, the invention provides a method for measuring and marking the array antenna phase center by adopting spread spectrum pseudo code ranging technology. The method for calibrating the satellite navigation digital multi-beam launching array antenna phase center can amend the high-precision ranging application of the satellite navigation field array antenna. The method for calibrating the satellite navigation digital multi-beam launching array antenna phase center has the advantages of being novel, creative, simple and practical.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Interferometer Direction Finding Method Based on Chinese Remainder Theorem
ActiveCN111903218BSolving Difficult-to-Optimize Design ProblemsIncrease the lengthDirection findersChinese remainder theoremAmbiguity
The invention discloses an interferometer direction finding method based on the Chinese remainder theorem, which relates to an interferometer direction finding technology in the field of radio direction finding. In the case that the antenna shape and array size are fixed, the present invention uses the Chinese remainder theorem to design an antenna array form with the best performance, which solves the phase ambiguity problem; and adopts long and short baseline matching step by step and virtual array processing technology to effectively expand the The equivalent baseline length improves the accuracy of direction finding. The equipment manufactured by the invention has the advantages of simple operation, reliable performance, convenient algorithm, high precision of direction finding and the like. It is especially suitable for accurate direction finding and positioning for radiation sources such as communication, radar, and measurement and control in the detection equipment in the field of military electronic countermeasures.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
CSI-based high-precision ranging positioning method
InactiveCN108318861AHigh positioning accuracyStrong engineering achievabilityPosition fixationWireless communicationChannel state informationPhase correction
The invention provides a high-precision ranging positioning method based on channel state information (CSI). The positioning method is mainly divided into an offline phase and an online phase. In theoffline phase, firstly multiple calibration points are selected in a positioning area, then an access point (AP) extracts the CSI from the data from the calibration points and filters the CSI, an environmental factor and a path loss coefficient are obtained by using CSI before and after filtering, the environmental factor and the path loss coefficient are linearly fitted to obtain an adaptive pathloss coefficient, and an adaptive signal propagation model is obtained. In the online phase, the received CSI is filtered, filtered CSI energy is brought into the adaptive propagation model for distance estimation, and an obtained distance is brought into a positioning algorithm for positioning. Compared to the conventional positioning technology, the positioning technology of the invention has the advantage that CSI phase correction compensation and AP synchronization are not needed. In addition, the method has high engineering achievability and high positioning accuracy and is suitable formultiple positioning scenes such as a single station and multiple stations.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Frequency-domain migration-based de-chirping inverse synthetic aperture radar (ISAR) envelope alignment method
ActiveCN106154265AImprove image qualityIncrease the working distanceRadio wave reradiation/reflectionTime domainInterferometric synthetic aperture radar
The invention relates to a frequency-domain migration-based de-chirping inverse synthetic aperture radar (ISAR) envelope alignment method. According to the method, based on the alignment of a conventional envelope correlation method, the accuracy of envelope alignment is improved by using the frequency-domain migration property of Fourier transform; and the maximum constraint condition of the accuracy of traditional envelope alignment is that the error of migration alignment cannot break through the limitation of half of a range resolution cell when migration alignment is carried out under a condition that time-domain signal sampling is completed, and the solidification of range units is completed, wherein one range unit is one complex data representation. Since FFT operation is required to be carried out before the formation of range units in de-chirping signal processing, echo signals are multiplied by a frequency shift factor before the FFT operation, and accurate migration of data which have been subjected to FFT can be realized.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Under-actuated control method suitable for damping angular velocity of satellite attitude
ActiveCN102923317ASimple algorithmSimple logicSpacecraft guiding apparatusAngular velocityOperability
The invention discloses an under-actuated control method suitable for damping the angular velocity of a satellite attitude. The method includes firstly determining a satellite control failure shaft and two normally working shafts, and determining the angular velocity offset value of the two normally working shafts according to the size relation between main inertias of the two normally working shafts and the actual attitude angular velocity of the failure shaft; then determining the angular velocity deviation according to the actual attitude angular velocity of the angular velocity offset value of the two normally working shafts, and obtaining control moments of the two normally working shafts according to the angular velocity deviation; and controlling the angular velocities of the three shafts through the control moments until all angular velocity deviations of the three shafts are smaller than an angular velocity deviation expectation amplitude. The control method is simple in algorithm, good in dynamic behavior and high in project operability.
Owner:BEIJING INST OF CONTROL ENG
Double satellite formation collision preventing method
ActiveCN110377047AIncrease the level of autonomyClear hierarchyPosition/course control in three dimensionsSafety indexCountermeasure
Disclosed is a double satellite formation collision preventing method. If the three-dimensional distance between a main formation satellite and an auxiliary formation satellite is smaller than a firstthreshold, the auxiliary formation satellite issues an anti-collision warning sign, simultaneously sends a formation thruster jet limit sign, and immediately terminates the ongoing formation controltask; if the three-dimensional distance is smaller than a second threshold, the auxiliary formation satellite sends the formation thruster jet limit sign again, and a thruster self-locking valve of the auxiliary formation satellite is closed; if the three-dimensional distance is smaller than a third threshold, the main formation satellite issues an anti-collision warning sign, and performs pulse jet control to promote the main formation satellite away from the auxiliary formation satellite. The collision preventing method has clear level and complete systematicness, comprises measures of the auxiliary formation satellite and the main formation satellite from the coping roles, and comprises passive jet limit measures and active jet avoidance measures from the perspective of countermeasures,so the engineering implementability is strong, the method is simple and can be implemented on the satellites, the level of autonomy of the satellites is improved, the response is rapid, and the safety index is high.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST
In-orbit fuel consumption balancing method of formation satellite system
ActiveCN106681138AStrong engineering achievabilityIncrease the level of autonomyAdaptive controlOrbital periodHandoff control
The invention relates to an in-orbit fuel consumption balancing method of a formation satellite system. The method comprises the following steps that 1) after kth formation control, the fuel consumption Ek of the formation control is calculated; 2) after the kth formation control, a formation control parameter [delta]lk of two satellite orbit periods is determined; 3) the sum SEk of cumulative fuel consumption of formation control and a residual error [delta]lk of present formation control are substituted into a formula SEk>=k1&&[delta]lk>=k2 for determination; and 4) if the formula is valid, marks of main and auxiliary satellites are switched autonomous on the satellites, main and auxiliary satellite switching control is carried out via a ground annotation instruction or on satellites autonomously so that a new main satellite operates in a reference orbit, parameters are set as initial values, a new auxiliary satellite executes a formation control task, and the steps 1) to 3) are repeated; or if the formula is invalid, the original auxiliary satellite continues to carry out formation control. The method is high in engineering realization performance, can be used to save fuels, requirements of formation satellite tasks are taken into consideration, and the autonomous level of the satellites can be improved.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST
On-track motor plume data acquiring method based on momentum wheel data
ActiveCN103149008ASimple method and logicStrong engineering achievabilityAerodynamic testingStar sensorQuality characteristics
The invention discloses an on-track motor plume data acquiring method based on momentum wheel data. The on-track motor plume data acquiring method based on the momentum wheel data includes the following steps: constructing a normal three-axis stabilization gesture of a spacecraft, adopting a momentum wheel to be as an executing mechanism of three-axis control, disassembling a magnetic torquer, and confirming gestures of a top and an infrared or star sensor and the like; confirming a start and control position and a time span of air injection of a motor involved in a test, carrying out preparations before the motor works (such as starting of a heater, open of a latching valve); recording data output by the momentum wheel; analyzing a testing result and analyzing disturbing force and moment of force generated by the air injection of the motor according to the momentum wheel data and quality characteristics of the spacecraft. The on-track motor plume data acquiring method based on the momentum wheel data is capable of achieving acquisition of the on-track motor plume data under the condition of high vacuum real environment.
Owner:BEIJING INST OF CONTROL ENG
Beidou RDSS micro base station information framing transmission method facing multiple services and multiple users
InactiveCN106211236AStrong engineering achievabilitySolve the information compression problemNetwork traffic/resource managementRadio transmissionType of serviceDevice type
The invention provides a Beidou RDSS micro base station information framing transmission method facing multiple services and multiple users, and satisfies technical requirements for multi-user access and information distribution and transmission. The information is ordered according to the priorities by combining information including priorities of access users, the types of equipment and the types of services; adaptive information compressing and information framing are carried out according to types of the service information, information framing and queuing problems in multi-user information transmission are solved, and optimized transmission of the multi-user information is realized.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Discretized region scanning subarray-level sparse optimization method and system
ActiveCN112347696AIncrease distanceAids in positional calibrationDesign optimisation/simulationHigh level techniquesAntenna designRadar systems
The invention discloses a discretized region scanning subarray-level sparse optimization method and system, and belongs to the technical field of array antenna design, and the method comprises the following steps: S1, discretizing an initial population; s2, carrying out region scanning processing; and s3, optimization processing. When the method and the system are applied to sub-array-level sparseoptimization of a large-scale circular aperture antenna, under the condition that the sub-array spacing meets the spacing requirement, the optimization time is greatly reduced, the sidelobe level isreduced, a new way is provided for rapidly solving effective position arrangement of array elements under the specific array element spacing limitation condition, the diversity of a solution set in the optimization process is improved, the probability of finding the optimal solution is improved, and local convergence of the optimization algorithm is effectively avoided; and when the designed arrayantenna is applied to a large-scale radar system, the radar has the advantages of long operating distance, high resolution, low cost, light weight, high engineering realizability and the like, and isworthy of popularization and application.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Time service system time comparison accuracy real-time measurement device and method
ActiveCN107390506ASolve measurement problemsStrong engineering achievabilityRadio-controlled time-piecesMeasurement deviceObservation data
The invention discloses a time service system time comparison accuracy real-time measurement device and method. The time service system time comparison accuracy under different baseline conditions can be measured in real time. The equipment delay of navigation signal receiving equipment, a navigation signal receiving equipment antenna, an antenna cable and time service system, a time service system antenna and an antenna cable requires to be accurately calibrated before starting of measurement and the phase center of the antenna is accurately calibrated. Real-time solving of the clock difference data can be realized by the original observation data outputted by the navigation signal receiving equipment and the clock difference data outputted by time interval measurement equipment and other information so that the problems of no clock difference truth value and measurement real-time performance under different baseline conditions can be solved, and real-time measurement of the time service system time comparison accuracy under different baseline conditions can be realized.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
On-board autonomic fault diagnosis method controlled based on control moment gyro group
InactiveCN110764487AClear processStrong engineering achievabilityProgramme controlElectric testing/monitoringControl mannerControl engineering
The invention discloses an on-board autonomic fault diagnosis method controlled based on a control moment gyro group, comprising step 1 of checking a communication state of an on-board computer with acontrol moment gyro; step 2 of diagnosing a working state according to control moment gyro return; and step 3 of diagnosing data according to control moment gyro return. The control moment gyro is output of two degrees of freedom. According to a control manner of the control moment gyro, data of an internal frame and data of an external frame are respectively diagnosed, wherein diagnosis of a rotational speed is performed for the internal frame and diagnosis of a rotational speed and a position is performed for the external frame. The invention has the advantages of timely and effectively diagnosing a potential data abnormality, and, by designing a system fault value threshold and a fault cumulative frequency threshold, timely disposing a fault reflector, to avoid introduction of abnormal data into system control and also facilitate rapid response of the system to a fault, such that its engineering application is relatively simple and it is also convenient to be implemented.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST
GSO frequency track resource efficiency evaluation method based on military benefits
ActiveCN113627799APerception of military benefitsQuality improvementResourcesFrequency coverageResource efficiency
The invention discloses a military benefit-based GSO frequency track resource efficiency evaluation method. The method comprises the following steps of calculating a military coverage area satisfaction degree A1 of to-be-evaluated data; calculating military frequency coverage A2; calculating a service support degree A3; calculating the support degree A4 of the earth station; calculating the effective coverage A5 of the military application; calculating the cooperation degree A6 with the existing military system; taking the to-be-evaluated indexes A1-A6 as first-level indexes, and giving a judgment matrix of the first-level indexes; calculating weights based on the judgment matrix, obtaining weight vectors of the first-level indexes, and calculating the fuzzy satisfaction degree of each first-level index; calculating ambiguity vectors for the obtained first-level index values, and generating an evaluation matrix R; and selecting the maximum value in the matrix C as an efficiency evaluation value based on the weight vector of the first-level index. According to the method, the quality of the stored military frequency orbit resources can be improved, all indexes are clear, and the method has high engineering realizability.
Owner:天津(滨海)人工智能军民融合创新中心
Control method for unmanned aerial vehicle group to cooperatively exit from circular trajectory
ActiveCN109032186AAvoid collisionHigh utility valuePosition/course control in three dimensionsExit pointComputer science
The invention relates to the technical field of unmanned aerial vehicle group control, in particular to a control method for an unmanned aerial vehicle group to cooperatively exit from a circular trajectory. The method comprises the following steps: (1) establishing a common exit point and a common transitional route of an unmanned aerial vehicle group; (2) judging the timing when each unmanned aerial vehicle exits from the circular trajectory; and (3) setting the flight altitude of each unmanned aerial vehicle while exiting from the circular trajectory. According to the control method for theunmanned aerial vehicle group to cooperatively exit from the circular trajectory disclosed by the invention, the common transitional route is set according to the flight circular trajectory area of the unmanned aerial vehicle group to make each unmanned aerial vehicle in the unmanned aerial vehicle group orderly exit from the circular trajectory through the common transitional route, and changesown flight altitude in a flight exit process to form an altitude difference, thereby effectively avoiding collision between the unmanned aerial vehicles, and greatly simplifying the design of a system. The control method is simple and easy to operate, and has relatively high engineering realizability and relatively high practical value.
Owner:西安雷众电子科技有限公司
Accurate modeling method for metal material welding spots
ActiveCN112464401ASimple processEasy to masterGeometric CADDesign optimisation/simulationMetallic materialsEngineering
The invention provides an accurate modeling method for metal material welding spots, and belongs to the technical field of vehicle simulation analysis. The method comprises the steps: by comparing theforce and displacement curve of the actual welding spot sample piece with the force and displacement curve of the CAE analogue simulation, adjusting the parameters of the analogue simulation, so thecurve output by the analogue simulation is unified with the corresponding test curve, the welding spot material parameter model is obtained and used in the whole vehicle analogue analysis model, and the accuracy and precision of the analogue analysis result are improved.
Owner:FAW CAR CO LTD
Embedded long distance real time GPS common view time comparison method
InactiveCN108680930ASolve the problem of time synchronization between different stationsSolve the modular problemSatellite radio beaconingFPGA prototypeDistance based
The invention aims to solve the long distance based GPS common view time comparison technical demands, and discloses an embedded long distance real time GPS common view time comparison method; based on a FPGA prototype board card, the method can embed a GPS common view time comparison algorithm into a DSP, thus realizing time comparison in real time; the main task contains GPS common view and single machine synergy; the method can ensure to stably output a clock error result without increasing operation complexity and space complexity, thus realizing inter-station time synchronization within thousands of kilometers.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Fluorine-containing polymer coated high-purity boron powder and preparation method thereof
InactiveCN112851449AImprove combustion efficiencyImprove combustion performanceNon-explosive/non-thermic compositionsExplosive ingredient compoundingFree energiesPhysical chemistry
The invention discloses fluorine-containing polymer coated high-purity boron powder. The fluorine-containing polymer is used for coating the high-purity boron powder, not only can the free energy of the specific surface of boron powder particles be reduced and the agglomeration phenomenon be reduced, but also the combustion efficiency of the boron powder can be remarkably improved. The invention further provides a preparation method of the fluorine-containing polymer coated high-purity boron powder. The fluorine-containing polymer coated high-purity boron powder obtained by the method can well solve the problems that the combustion efficiency of amorphous boron powder in a solid propellant is low, and the heat value of the boron powder cannot be effectively exerted. The coating preparation technology is simple, the engineering implementability of the coating process is high, and the economic added value is high.
Owner:江苏智仁景行新材料研究院有限公司
RDSS and wifi based Beidou micro base station networking and mixed dynamic networking methods
ActiveCN106211356AMeet networking requirementsUnique method structureNetwork topologiesConnection managementHeterogeneous networkInterconnection
The invention provides an RDSS and wifi based Beidou micro base station dynamic mixed networking method to enable a Beidou micro base station based on Beidou RDSS and wifi combination to realize multi-user access and network construction. According to the method, corresponding flows are provided for RDSS link, wifi link, and RDSS and wifi mixed link scenes respectively. The method can be applied to solve the problems in constructing the layered dynamic mixed network based on the RDSS satellite link and the wifi link, and can be used to realize interconnection and intercommunication of access terminals of the Beidou RDSS micro base station under the condition of heterogeneous network.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Design method of distribution type trusted radio navigation system architecture
ActiveCN109613566ARule out the possibility of malicious deceptionPracticalSatellite radio beaconingEngineeringNavigation system
The invention provides a design method of a distribution typetrusted radio navigation system architecture for situations where current radio navigation systems are susceptible to fraudulent interference. The method designs navigation system compositions and navigation signal generation and transmission and reception methods, achieves effective resisting on the navigation spoofing means and the like through improving the system architecture and the signal broadcasting mode of the radio navigation system, thereby greatly improving the safety of the radio navigation system including satellite navigation.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
In-orbit engine plume data acquisition method based on gyroscope data
The invention discloses an in-orbit engine plume data acquisition method based on gyroscope data. The method comprises the steps of building normal three-axis stabilization attitudes of a spacecraft, adopting a momentum wheel to be an actuator for controlling three axes and a magnetic torquer for unloading, adopting attitude sensors such as a gyroscope and an infrared or star sensor for determining attitude, identifying a starting control point and air injection time of an engine involved in a test, preparing before work of the engine, such as starting a heater and starting a latching valve, recording data output by the gyroscope, analyzing test results, and analyzing disturbing force and moment generated during air injection of the engine according to the gyroscope data and quality characteristics of the spacecraft. According to the in-orbit engine plume data acquisition method based on the gyroscope data, plume data acquisition of the in-orbit engine under high vacuum and real environment is achieved.
Owner:BEIJING INST OF CONTROL ENG
Target real-time tracking and early warning method and system based on intelligent equipment
ActiveCN105426553AAddressing Target Movement DiversityReduce loadForecastingGeographical information databasesEarly warning systemGeolocation
The invention discloses a target real-time tracking and early warning method and a target real-time tracking and early warning system based on intelligent equipment, which belong to a novel target behavior identifying technique. A principle is that peripheral information of a geographical position in which a target is positioned is determined by utilizing a positioning technique and location based service (LBS), then the target behavior probability is calculated according to database records, and when a certain behavior probability of the target is greater than a set threshold, early warning is given to the target or the receiving end of the target. According to the method and the system, on the basis that all possible behaviors of the target are analyzed, the target motion diversity problem (which is solved in a user position module) and the target behavior diversity problem (which is solved in a user behavior prediction module and an early warning judgment module) are respectively solved by utilizing the three modules.
Owner:HANGZHOU CCRFID MICROELECTRONICS
Under-actuated control method suitable for damping angular velocity of satellite attitude
ActiveCN102923317BSimple algorithmSimple logicAttitude controlSpacecraft guiding apparatusAngular velocityOperability
Owner:BEIJING INST OF CONTROL ENG
Drill rod straightness detection device and method
ActiveCN113324511AAccurate detectionDetection is convenient, accurate and fastMeasurement devicesStructural engineeringInformation acquisition
The invention discloses a drill rod straightness detection device and method. The device comprises a first supporting mechanism, a second supporting mechanism and a detection mechanism; wherein the second supporting mechanism is connected with the first supporting mechanism, is supported by the first supporting mechanism and is used for supporting a drill rod to be tested; the detection mechanism comprises a driving unit and a spatial position information acquisition unit; the driving unit drives the spatial position information acquisition unit to rotate; the spatial position information acquisition unit is used for being in contact with a to-be-detected drill rod and acquiring spatial position information of the to-be-detected drill rod in real time. According to the invention, the straightness of the drill rod with the key bar can be conveniently, accurately and quickly detected in the production process, so that the device and method has important significance for improving the processing quality and the process of the drill rod.
Owner:JIANGSU XCMG CONSTR MASCH RES INST LTD
Compact wide-view-field white light sighting telescope optical system
The invention discloses a compact wide-field white light sighting telescope optical system, which adopts a Kepler telescope system and comprises an objective lens group, an image rotation group, a reticle and an eyepiece group, the objective lens group adopts two groups of three-piece spherical lenses, the image rotation group adopts three groups of five-piece spherical lenses, and the image rotation group is arranged behind an image plane of the objective lens group; the reticle is arranged behind the image rotation group, and the eyepiece group adopts three groups of five spherical lenses and comprises a first eyepiece lens group, a second eyepiece lens group and a third eyepiece lens group. The white light sighting telescope optical system is good in imaging quality, free of sensitive size, good in lens processing technology, reasonable in optical element arrangement, compact in structure, small in size and high in engineering realizability, and has practical application value.
Owner:湖南华南光电(集团)有限责任公司
Autonomous diagnosis method for formation configuration control strategy
PendingCN111273692AClear processStrong engineering achievabilityPosition/course control in three dimensionsTotal factory controlSatelliteDiagnosis methods
The invention relates to an autonomous diagnosis method for a formation configuration control strategy, and the method comprises the specific steps: step 1, carrying out state inspection related to astrategy before a satellite calculates the formation control strategy; step 2, enabling the satellite to carry out correctness autonomous diagnosis on the control strategy delta vi according to the current formation configuration parameter; if the diagnosis is passed, entering the next step; otherwise, setting an alarm mark; step 3, after the control speed increment sequence delta vi passes the diagnosis, converting delta vi into a control instruction sequence (Tpi, Lti) according to the current on-board time, the actual thrust of the thruster and the satellite mass, and carrying out autonomous diagnosis on the correctness of a control instruction; if the diagnosis is passed, executing the instruction; otherwise, setting an alarm mark.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST
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