37results about How to "Fail to accurately" patented technology

A technique efficiently corrects multiple storage device failures in a storage array using a combination of a single diagonal parity group and multiple row parity groups. The storage array includes a plurality of concatenated sub-arrays, wherein each sub-array includes a set of data storage devices and a parity storage device. Each row parity group is associated with a sub-array of the array. The array further includes a global parity storage device holding diagonal parity computed across the concatenation of the sub-arrays. Instead of requiring that each parity group contain both a row parity device and a diagonal parity device, the array is composed of a collection of row parity groups. Diagonal parity is calculated across the full array.

Systems, methods, and computer program products for enhancing tolerance of data loss in a disk array system have been provided. Systems include a redundant array of independent disks (RAID) storage system including an array of hard disk devices (HDDs) organized in a two dimensional structure of rows and columns of HDDs. The system includes a full stride logically partitioning the rows and columns of HDDs into rows and columns of elements, the full stride including an element from each HDD in the rows and columns of HDDs, each element in the full stride residing on a physically independent HDD. Each element has an element type, wherein a first element type is a data element and a second element type is a checksum element. The system further includes a row checksum element calculated as a checksum of all data elements in a row of the full stride, and a column checksum element calculated as a checksum of all data elements in a column of the full stride, wherein the row checksum element calculation and the column checksum element calculation intersect at a single data element. The system also includes a device adapter for controlling access to the array of HDDs, the device adapter calculating the row checksum element and the column checksum element, the row checksum element and the column checksum element utilized to correct one or more failures in the array of HDDs.

The present application relates to a system and method for real-time monitoring and failure prediction of electrical submersible pumps. The design includes generating a failure prediction value with a management system by calculating a percentage change of the respective first measurement values and the corresponding user-supplied stable operating values, the failure prediction value representing likelihood of failure of the electrical submersible pump.

There is provided a novel failure prediction system, a failure prediction program, a failure prediction method, a device, a printer and a device management server capable of accurately predicting a failure of a device connected on a network. A failure prediction system is provided with multiple devices and a device management server for managing the multiple devices via a network. Each of the devices is provided with a device diagnosis section for diagnosing the state of the device to notify diagnosis results; and the device management server is provided with a failure prediction section for predicting a device with a failure tendency based on the diagnosis results sent by each of the device diagnosis sections. Accordingly, it is possible to accurately predict not only a failure due to an expected factor but also a failure due to an unexpected factor.

A shutter unit for a vehicle, capable of properly determining failure of a shutter without using a sensor which directly detects a position of the shutter. The shutter unit includes a return spring for returning the shutter to a predetermined initial position by urging the shutter, and a rotating machine configured to be capable of converting input motive power to electrical power and input electrical power to motive power by electromagnetic induction action. The rotating machine drives the shutter by the motive power obtained by conversion. The shutter unit executes return control that stops supply of electric power to the rotating machine to return the shutter to the initial position by urging of the shutter by the return spring, and determines failure of the shutter based on a rotating machine induced voltage of the rotating machine, detected during execution of the return control.

Based on the discovered operating errors under all basic operating mode s for advanced boiling water reactor, a suitable quantification analytical model is employed to fast assess the risk situation for the discovered operating errors and quantified results are used to differentiate the risk rating for the operating errors. This is used to determine the necessity and urgency for the corrective measures to respond to the errors. The adopted quantification analytical model is the safety assessment (Probabilistic Risk Assessment, PRA) model for all basic operating mode s for advanced boiling water reactor, including power operation, low power operation and shutdown for major repairs. For the discovered operating error during power operation period, the invention uses the specifically developed safety assessment model for plant event, earthquake, flood and fire to determine risk effect for the discovered operating error on different event to manifest the risk characteristics for the discovered operating error and match the quantification results to existing plant design, operation and maintenance conditions.

An electrical power generation and distribution health monitoring system includes a network of a plurality of nodes included in an electrical system of a vehicle. Each node of the plurality of nodes is synchronized with other nodes of the plurality of nodes. The network is configured to communicate electrical system health data associated with the electrical system to at least one vehicle health reporting system.

A method for correcting double failures in a storage array has the following steps. A storage array is organized as a plurality of concatenated sub-arrays, each sub-array including a set of data storage devices and a row parity storage device. Row parity is computed for each row of each sub-array. The row parity of a particular sub-array is stored on a row parity storage device of the particular sub-array. A diagonal parity is computed across the concatenated sub-arrays. A double storage device failure is corrected using both the sub-array row parity and the diagonal parity.

An electrical power generation and distribution health monitoring system includes a network of a plurality of nodes included in an electrical system of a vehicle. Each node of the plurality of nodes is synchronized with other nodes of the plurality of nodes. The network is configured to communicate electrical system health data associated with the electrical system to at least one vehicle health reporting system.

A battery-assisted bicycle includes a driving unit that accurately detects a failure in each of a torque detector, a crank rotation detector, and a motor rotation detector. The driving unit includes a crankshaft to which pedals are to be connected, a motor rotation detector that detects rotation of an electric motor, a torque detector that detects a torque generated at the crankshaft, a crank rotation detector that detects rotation of the crankshaft, and a sensor failure detector that detects a failure in at least one of the motor rotation detector, the torque detector, and the crank rotation detector based on detection results from the motor rotation detector, the torque detector, and the crank rotation detector.

An inertia sensor unit having a detecting element, a signal processor being constituted as an element separate from the detecting element, for at least amplifying signals output from the detecting element, and an inertia sensor mounted to a detection object for detecting acceleration or angular velocity of the detection object as an inertial force of the detection object to output electrical signals changing according to the inertial force, includes: a first temperature detecting means for detecting the temperature of the signal processor, a second temperature detecting means for detecting the temperature of the detecting element directly or indirectly, and a correcting means for correcting the signals output from the inertia sensor based on the result detected by the first temperature detecting means and the second temperature detecting means.

The subject of the invention is a method for controlling the quality of a service (85) that includes at least one technical component (86) defined according to one of several possible technologies, the quality of service being defined by a technical contract (100) between the provider of the service and a customer and the contract (100) including quality criteria (101) associated with thresholds (102) and related to said technology. The method comprises producing: a description (S1, S2, S3), in a modeling language in object-oriented technology (UML, XML) and independent of said technologies, of the structure of a service model (80), the structure of a contract model (90) and the structure of collection tool model (110); constructing (S4, S5, S6) a service model (80), a contract model (90) and at least one collection tool model (110) from the respective descriptions of said structures; constructing (S7-S9) the service (85), the contract (100) and at least one collection tool (120) from the respective models (80, 90, 110); collecting (S10) quality of service indicators (103) using at least said collection tool (120); and comparing (S11) the quality indicators (103) with the thresholds (102) defined in the contract (100).

Systems, methods, and computer program products for enhancing tolerance of data loss in a disk array system have been provided. Systems include a redundant array of independent disks (RAID) storage system including an array of hard disk devices (HDDs) organized in a two dimensional structure of rows and columns of HDDs. The system includes a full stride logically partitioning the rows and columns of HDDs into rows and columns of elements, the full stride including an element from each HDD in the rows and columns of HDDs, each element in the full stride residing on a physically independent HDD. Each element has an element type, wherein a first element type is a data element and a second element type is a checksum element. The system further includes a row checksum element calculated as a checksum of all data elements in a row of the full stride, and a column checksum element calculated as a checksum of all data elements in a column of the full stride, wherein the row checksum element calculation and the column checksum element calculation intersect at a single data element. The system also includes a device adapter for controlling access to the array of HDDs, the device adapter calculating the row checksum element and the column checksum element, the row checksum element and the column checksum element utilized to correct one or more failures in the array of HDDs.

An image forming apparatus includes: a registration roller which corrects a skew of the envelope and conveys the envelope to the transferring section; a sensor provided between a transferring section and the registration roller wherein in a case when an envelope is conveyed with a side of the main body thereof having the flap portion being parallel to the conveying direction and the flap portion being located where the end detected is by the sensor, a controller allows the sensor to detect a position of the end of the parallel portion of the flap portion when the registration roller and the sensor are located at the parallel portion of the flap portion, and the controller changes a latent image writing position by the writing section in an image scanning direction perpendicular to the conveyance direction of the envelope according to the detection result by the sensor

A power system includes: a first power circuit having a first battery; a second power circuit having a second battery, wherein a used voltage range of the second battery with respect to a closed circuit voltage overlaps with the first battery, and a static voltage of the second battery is lower than the first battery; a voltage converter, converting a voltage between the first and the second power circuit; a power converter, converting power between the first power circuit and a driving motor; a current sensor; a passing current control section, operating the voltage converter so that the passing current becomes a target current; and a failure determining section. The failure determining section determines the voltage converter fails in a case where the difference is greater than a threshold and the passing current flows from the side of the first power circuit to the side of the second power circuit.

An evaporated fuel processing apparatus includes a blocking valve configured to selectively allow and shut off communication between a canister and a fuel tank, and adsorbs evaporated fuel by the canister by opening the blocking valve during fuel filling, wherein the evaporated fuel occurs in the fuel tank, and performs a purge operation of introducing purge gas into an intake air line of an internal combustion engine with the blocking valve closed while the internal combustion engine is operating, wherein the purge gas contains a fuel component released from the canister. A diagnostic apparatus is configured to diagnose whether or not the blocking valve is abnormal, based on sensing of evaporated fuel flowing through the blocking valve while the purge operation is being performed.

A temperature sensor disposed in an exhaust system of an engine is inspected. Determination is made that conditions for inspecting the temperature sensor are satisfied in the current engine load range. The time for the temperature in the exhaust system to reach a value appropriate for checking the temperature sensor is determined in accordance with engine water temperature. Output of the temperature sensor is checked to determine if the temperature sensor is normal at the determined time.

A temperature sensor disposed in an exhaust system of an engine is inspected. Determination is made that conditions for inspecting the temperature sensor are satisfied in the current engine load range. The time for the temperature in the exhaust system to reach a value appropriate for checking the temperature sensor is determined in accordance with engine water temperature. Output of the temperature sensor is checked to determine if the temperature sensor is normal at the determined time.

A system for managing network devices of a communications network includes a management system and agents associated with network devices. The management system receives faults and based upon a machine learning system attempt to mitigate the faults based upon either an on-line or an off-line mitigation process.

A failure prediction system according to an aspect of the present disclosure includes: a torque value collection unit which collects torque values of a drive axis of a robot that is operating in accordance with a given work program; an evaluation formula derivation unit which derives an evaluation formula approximating a time change of the torque value which is most recent from among the torque values collected by the torque value collection unit; a threshold setting unit which sets a failure threshold that is the torque value at which it is determined that failure of the drive axis occurs, based on the evaluation formula and the time change of the torque value when the drive axis reached failure in the past; and a prediction determination unit which calculates an estimated value for the torque value when a prediction time set in advance has elapsed in the evaluation formula, and determines whether failure of the drive axis is predicted within the prediction time according to comparison between the estimated value and the failure threshold.

A power system includes: a first power circuit having a first battery; a second power circuit having a second battery, wherein a used voltage range of the second battery with respect to a closed circuit voltage overlaps with the first battery, and a static voltage of the second battery is lower than the first battery; a voltage converter, converting a voltage between the first and the second power circuit; a power converter, converting power between the first power circuit and a driving motor; a current sensor; a passing current control section, operating the voltage converter so that the passing current becomes a target current; and a failure determining section. The failure determining section determines the voltage converter fails in a case where the difference is greater than a threshold and the passing current flows from the side of the first power circuit to the side of the second power circuit.

A vibration damping system comprises a vibration applying device mounted on a frame and a control device that controls the vibration applying device, the control device comprising a voltage command producing part that produces a driving voltage command to drive the vibration applying device and a vibration failure diagnosis part that diagnoses whether there is failure based on a vibration detection signal output by a vibration detecting device, wherein the voltage command producing part produces the driving voltage command corresponding to a diagnosis frequency that is previously set at a frequency identical to a resonance frequency of the frame or the vibration applying device or at a predetermined frequency close to the resonance frequency and makes the vibration applying device generate the vibration applying force according to the driving voltage command, and the vibration failure diagnosis part diagnoses whether there is failure based on the vibration detection signal.

A method of monitoring an actuator system comprising a control device, a torque motor having a voltage Umc across its terminals and actuating a servo-valve, and an actuator controlled by the servo-valve, the control device being suitable for delivering to the torque motor a control current Icmd as a function of a current setpoint I_c and of a measured current Imes, the monitoring method comprising the following steps:comparing the voltage Umc measured across the terminals of the torque motor with a predetermined threshold voltage Vthresh; andif the voltage across the terminals of the torque motor is less than or equal to the predetermined threshold voltage, raising an alarm and indicating a failure of the servo-valve;the method being characterized in that said comparison of the voltage Umc is performed only if the control current Icmd is greater than a predetermined threshold current Iinhib, with a control current less than that inhibiting any signaling of a servo-valve failure.

A system for managing network devices of a communications network that includes a management system receiving log information and fault information. Based upon the log and fault information, the management system attempts to mitigate the fault using a machine learning process.