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Automobile power-assisted steering test system and method
PendingCN120846705AElectric testing/monitoringVehicle steering/rolling behaviourSteering wheelDriver/operator
The embodiment of the invention discloses an automobile power-assisted steering test system and method, and relates to the technical field of automobile electronics. An EPS controller in the automobile power-assisted steering test system is used for acquiring an input torque generated by a driver simulation motor through an angle torque sensor; according to the input torque and the state information of the vehicle, the power-assisted torque needing to be output by the EPS motor in the steering process is determined; the power-assisted torque is sent to an EPS motor, so that the EPS motor assists the vehicle in steering; if the input torque, the power-assisted torque and the actual resistance torque of the rocker arm end are balanced in the steering process of the vehicle, and the amplitude and the variation trend of the power-assisted torque all accord with the preset power-assisted characteristic curve, the vehicle power-assisted steering test passes. Therefore, by introducing a driver steering wheel input part and a steering resistance simulation part, the automobile power-assisted steering test system can simulate the working principle of a steering system more truly, so that the test precision and effect are improved.
Owner:BEIJING JINGWEI HIRAIN TECH CO INC
Van semitrailer steering synchronization angle closed-loop test calibration system
ActiveCN120651551AGeometric CADVehicle steering/rolling behaviourStructural deformationVehicle frame
The invention belongs to the technical field of vehicle steering control, and relates to a van semitrailer steering synchronization angle closed-loop test calibration system, which comprises the following steps of: firstly, executing a static steering test on a no-load combined vehicle, and constructing a mapping reference table of a saddle space position and an ideal hinge angle; then multi-working-condition dynamic steering testing is carried out on the load combination vehicle, vehicle frame deformation data are collected in real time, the deformation data are converted into a hinge angle compensation value through a pre-trained deformation mechanical model, selective correction is carried out on the actually-measured hinge angle based on a deformation compensation starting threshold value, a calibration target is generated to reversely analyze the target saddle position, and the target saddle position is corrected; the problem that in the prior art, inevitable elastic structure deformation and real mechanical steering asynchronous faults of the van semitrailer under the actual dynamic load working condition cannot be fully considered and distinguished is effectively solved, and then multi-working-condition driving verification data are collected, deformation mechanical model parameters are iteratively updated, and a compensation threshold value generation strategy is generated. And closed-loop optimization is realized.
Owner:SHANDONG XINFENGYUAN AUTOMOBILE MFG CO LTD
Off-line test method and off-line test device for vehicle steering system
The invention provides an off-line test method and an off-line test device for a vehicle steering system, and the method comprises the steps: controlling a vehicle to run according to a preset test track through activating an automatic driving mode of the vehicle; in the running process of the vehicle, running state data of the vehicle are collected in real time; and comparing the operation state data with a preset quality standard, and generating an offline test result of the vehicle steering system based on a comparison result. In the mode, the vehicle is controlled to run along the preset test track by adopting automatic driving, so that the test control precision of the vehicle steering system can be improved, and the accuracy and consistency of off-line test are further improved.
Owner:CHERY AUTOMOBILE CO LTD
Fault self-checking method and system for circulating ball type electric power steering system and readable medium
ActiveCN120971055ASteering partsVehicle steering/rolling behaviourElectric power steeringRelational model
The invention discloses a recirculating ball type electric power steering system fault self-checking method and system and a readable medium, and relates to the technical field of vehicles, and the method comprises the steps: storing a signal transmission path and each function node, determining the type of an influence factor which influences the instruction execution accuracy of the function node, and determining the instruction execution accuracy of the function node; analyzing and acquiring the relationship between the fluctuation amplitude of the data signal at each function node and the numerical value of the influence factor, storing the relationship as a correction model, and storing a first relationship model for reflecting the data association relationship among the function nodes on the same signal transmission path; acquiring real-time data and source data of various impact factors, and generating theoretical response data according to the first relation model, the real-time impact factor data and the correction model; the actual response data is collected, the deviation amplitude between the actual response data and the theoretical response data is calculated, whether the function node breaks down or has a potential fault is judged according to the deviation amplitude, early warning is output, and the fault detection accuracy and the potential fault pre-judgment capability are greatly improved through the technical scheme.
Owner:WUHAN PUXIXIN ELECTRONIC TECH CO LTD
Vehicle NVH comfort assessment method and device based on sound and vibration fusion and electronic equipment
PendingCN121917242ASubsonic/sonic/ultrasonic wave measurementVehicle steering/rolling behaviourComputational acousticsNoise
The invention provides a vehicle NVH comfort assessment method and device based on sound and vibration fusion and electronic equipment. The method comprises the following steps: performing in-vehicle interference noise identification processing on window-level data in a candidate window set to obtain a candidate effective window set; calculating a sound and vibration consistency index between the in-vehicle audio signal and the in-vehicle vertical acceleration signal for the window-level data in the candidate effective window set, and screening an external noise dominant window to obtain an effective window set; respectively calculating an acoustic index and a vibration index based on the effective window set, and performing calibration compensation on the acoustic index and the vibration index based on the sensor calibration information; and performing fusion calculation based on the data volume information of the effective window set, the working condition coverage information, the uncertainty information corresponding to the sensor calibration information and the proportion information of the effective window set in the candidate window set to obtain a comprehensive confidence index. According to the method, the evaluation accuracy and stability can be improved, the cross-equipment comparability is enhanced, and the result credibility is improved.
Owner:CAR CONTROL (BEIJING) TECH CO LTD
Multi-channel verification redundant corner torque sensor and degradation measurement method thereof
The sensor comprises two Hall type steering wheel angle sensors which are coaxially installed at a steering wheel transmission shaft, the models of the two Hall type steering wheel angle sensors are consistent, and the two Hall type steering wheel angle sensors are independently connected to a data processing module. When torque generated after the steering wheel is stressed acts on the steering wheel transmission shaft (1), a tubular column of the steering wheel transmission shaft deforms, rotation angles of deformation in different areas in the axial direction are different, and the two Hall type steering wheel angle sensors detect the tubular column rotation angles in the installation areas of the Hall type steering wheel angle sensors respectively and output the tubular column rotation angles to the data processing module. The data processing module calculates the torque borne by the steering wheel according to the angular deviation of the tubular column rotation angle measured by the two Hall type steering wheel angle sensors. Through cooperative work of the two sensors, the torque measuring function can be achieved, and the redundancy safety performance of the system can be improved.
Owner:FUZHOU UNIV
Linear load mechanism for steering abnormal sound test
ActiveCN223435759USubsonic/sonic/ultrasonic wave measurementVehicle steering/rolling behaviourAcousticsMechanical engineering
The utility model provides a linear load mechanism for a steering abnormal sound test. The linear load mechanism comprises a mounting seat, a power source, an output rod, a sensor and an adapter, a connecting screw hole is formed in one end, far away from the output rod, of the sensor; the adapter piece comprises a first adapter unit, a second adapter unit and a fixing piece, the first adapter unit comprises a first connecting plate and a first connector, the second adapter unit comprises a second connecting plate and a second connector, and an adapter hole extending perpendicular to the second connecting plate is formed in the middle of the second connector; the first connecting plate is provided with a first connecting hole, the second connecting plate is provided with a plurality of second connecting holes corresponding to the first connecting hole, and the first connecting plate and the second connecting plate can be relatively fixed through the fixing piece. According to the utility model, by observing the fitting condition of the first connecting plate and the second connecting plate, whether the connecting plate is in the optimal butt joint direction or not can be quickly judged and adjusted, and the preparation time before an abnormal sound test is saved.
Owner:CHINA AUTOMOTIVE ENG RES INST
Steer-by-wire testing method, device and equipment for vehicle entering and exiting curve and medium
The embodiment of the invention provides a steer-by-wire test method, device and equipment for vehicle entering and exiting a curve and a medium, and belongs to the technical field of vehicle test. Comprising the steps that a vehicle basic model is obtained, a vehicle test model is built based on the vehicle basic model, and the vehicle test model is a vehicle parameterized model comprising a steer-by-wire system; constructing a test scene, wherein the test scene at least comprises a bend entering scene entering a ramp and a bend exiting scene leaving the ramp; based on the vehicle test model, virtual tests are executed in the bend-in scene and the bend-out scene respectively, the virtual tests are that a driver carries out simulated driving in the test scene, and objective test data and subjective evaluation of the driver are obtained; and determining objective evaluation according to the objective test data, and determining a test result of the steer-by-wire system according to the objective evaluation and the subjective evaluation. The invention aims to improve the testing accuracy of the steer-by-wire system so as to improve the design quality of the steer-by-wire system.
Owner:CHINA FAW CO LTD
Test method of electric power steering system assembly
The invention discloses a method for testing an electric power steering system assembly, and belongs to the technical field of automobile part testing. The technical problems that in an existing testing method, static and dynamic testing processes are separated, testing efficiency is low, and quantitative evaluation on key dynamic performance parameters is difficult are solved. According to the invention, a test tool comprising a simulation rack, a driving device, an encoder, a torque sensor and a data acquisition card is adopted, and a control and processing module automatically executes a continuous test process: firstly, performing a static assistance test on an assembly, and judging qualification; and if the test is qualified, the test is automatically switched to dynamic test, a torque command signal is sent to the assembly, an output shaft is driven to rotate forwards and backwards, a position and a feedback torque signal are collected, and dynamic response parameters such as a position dispersion error, power-assisted delay time and overshoot are calculated. The method is mainly used for comprehensive performance testing and quality evaluation of the electric power steering system assembly in the production manufacturing or maintenance after-sales link.
Owner:NEXTEER AUTOMOTIVE SYST (LIUZHOU) CO LTD
Driving unit steering performance test method, device, medium and equipment
The invention provides a driving unit steering performance test method and device, a medium and equipment, and the method comprises the steps: building a whole vehicle simulation model based on a set verification working condition and whole vehicle information; generating a simulation result based on the whole vehicle simulation model and the verification working condition; based on the simulation result, calculating to obtain a load time domain curve on each wheel; inputting the load time domain curve into a steering performance test bench system carrying a driving unit to obtain an actual measurement result of the steering performance test bench system under the verification working condition; calculating an error rate between the simulation result and the actual measurement result; if the error rate is smaller than a preset error rate threshold value, the steering performance test bench system is adopted to test the driving unit under the test working condition, and an evaluation index is obtained; based on the evaluation index, the steering performance of the driving unit is determined, so that the steering performance of the driving unit can be accurately tested, and the consistency of test results can be ensured.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
Phase loss detection method and system of permanent magnet synchronous motor, medium and product
PendingCN120446742AVehicle steering/rolling behaviourPolyphase network asymmetry measurementsPhase currentsSteering wheel
The invention discloses a permanent magnet synchronous motor open-phase detection method and system, a medium and a product. The method comprises the following steps: acquiring a real-time three-phase current and a real-time load state of the steering motor; multiplying the absolute value of the real-time three-phase current by a preset coefficient to obtain a target three-phase current; respectively carrying out accumulation calculation on the target three-phase current to obtain a three-phase current accumulation sum; when the current cumulative sum exceeds a preset cumulative sum threshold value, or the steering angle of a steering wheel of a target vehicle corresponding to the steering motor changes, the three-phase current cumulative sum is reset to be a preset three-phase current cumulative sum; calculating an accumulated ratio set; obtaining a specific value threshold value corresponding to each accumulated specific value in the accumulated specific value set; determining whether there is an accumulated ratio exceeding a ratio threshold; if yes, adding one to the phase loss times; if not, zero setting is carried out on the phase loss times; and when the phase loss frequency exceeds a preset frequency threshold value, executing an early warning strategy. By implementing the above technical scheme, the accuracy of open-phase fault detection of the permanent magnet synchronous motor is improved.
Owner:SUZHOU HAIGE ELECTRONIC CONTROL CO LTD
Chassis dynamometer and method of controlling chassis dynamometer
PendingUS20260133097A1Steering partsVehicle steering/rolling behaviourSteering angleSteering control
A steering model controller in a chassis dynamometer of the disclosure executes a turning determination process of determining whether a driving state of a vehicle is a steering / turning state or a driving straight state based on comparison results between a turning radius for determination and turning radii for comparison calculated based on left steering angle information and right steering angle information. Then, the steering model controller executes a turning control process as a roller control process to be executed in determining that the vehicle is in the steering / turning state. The turning control process is a process of outputting, to a roller driving mechanism, four roller driving commands at which four rollers adapt to the steering / turning state of the vehicle and are rotationally driven.
Owner:TMEIC CORP
Vehicle steering system abnormal sound real-time detection method
ActiveCN120869339ASubsonic/sonic/ultrasonic wave measurementBiological neural network modelsSound detectionFeature extraction
The invention relates to the technical field of vehicle fault diagnosis, and particularly discloses a vehicle steering system abnormal sound real-time detection method. A differential mechanism turning abnormal sound detection and avoidance scheme in the prior art has defects and mainly depends on gasket surface treatment, the effect has timeliness, real-time monitoring cannot be achieved, the abnormal sound problem cannot be thoroughly avoided, and long-term noise, vibration, sound vibration roughness performance and driving comfort of a vehicle are affected. The method aims at solving the problems, data preprocessing and feature extraction are carried out by collecting the vehicle running state and acoustic data, and an abnormal sound detection model is constructed and trained based on the processed feature data. By integrating the multi-source sensor data and the advanced machine learning model, the abnormal sound of the vehicle steering system can be accurately detected in real time, the noise, vibration and sound vibration roughness performance and driving comfort of the vehicle are effectively improved, predictive maintenance is supported, and therefore the overall reliability and safety of the vehicle are improved.
Owner:YU CHUAN (SHANGHAI) TRANSMISSION TECH CO LTD +2
Simulating realistic test data from transformed real-world sensor data for autonomous machine applications
PendingUS20250377265A1Registering/indicating working of vehiclesError detection/correctionData simulationSimulation
In various examples, sensor data recorded in the real-world may be leveraged to generate transformed, additional, sensor data to test one or more functions of a vehicle—such as a function of an AEB, CMW, LDW, ALC, or ACC system. Sensor data recorded by the sensors may be augmented, transformed, or otherwise updated to represent sensor data corresponding to state information defined by a simulation test profile for testing the vehicle function(s). Once a set of test data has been generated, the test data may be processed by a system of the vehicle to determine the efficacy of the system with respect to any number of test criteria. As a result, a test set including additional or alternative instances of sensor data may be generated from real-world recorded sensor data to test a vehicle in a variety of test scenarios.
Owner:NVIDIA CORP
Method for detecting chassis defects of a vehicle
The invention relates to a method for detecting chassis defects of a vehicle. The method is characterized in that - chassis noise (FG) and chassis parameters (FP) are determined during different operating conditions of the vehicle, - the determined chassis noises (FG) and chassis parameters (FP) are fed to an artificial neural network (1), which is used in a training (Tr) to generate reference data (RD) with different operating states with a defect-free chassis - recorded tone sequences (T') and sound levels (P') of chassis noise (FG'), - determined chassis parameters (FP') and - recorded noise (SG') was trained, - by means of the artificial neural network (1), a target-actual comparison is carried out between the determined chassis noises (FG) and chassis parameters (FP) and the learned chassis noises (FG') and chassis parameters (FP') and disturbing noises (SG) are continuously compensated using the reference data (RD) and - a chassis defect is detected by means of the artificial neural network (1) if a result of the target / actual comparison exceeds a predetermined threshold value. The invention further relates to a method for operating a vehicle.
Owner:MERCEDES BENZ GROUP AG
Steering gear detection system based on embedded digital circuit
InactiveCN121026616ATesting electric installations on transportVehicle steering/rolling behaviourControl theoryLinked list
The invention relates to the technical field of detection control, in particular to a steering gear detection system based on an embedded digital circuit, which comprises a control linked list module, a signal mapping module, a state acquisition module, a deviation calculation module and a regulation and control correction module. According to the invention, the torque value and the vehicle speed value are written into the embedded digital register according to the control period sequence, and the stepping sequence is constructed, so that the timing sequence precise sorting of the control instruction can be realized, the digital sampling packet is generated by using the feedback current, voltage and angle signals, and the synchronous frame is marked, and the unified analysis mechanism of the periodic feedback behavior is realized. The error percentage value and the tolerance threshold value are compared to count the deviation times, the abnormal condition of the response stability is quickly identified, the deviation trend is tracked and controlled by means of a continuous voltage recursion correction mode, output parameters are dynamically adjusted, and a periodic closed-loop correction capability and a node-level real-time regulation and control mechanism are provided. And the data accuracy, the feedback real-time performance and the control stability in the detection process of the steering gear are effectively improved.
Owner:深圳市轩宇软件开发有限公司
Simulating realistic test data from transformed real-world sensor data for autonomous machine
ActiveUS12399086B2Registering/indicating working of vehiclesError detection/correctionData simulationSimulation
In various examples, sensor data recorded in the real-world may be leveraged to generate transformed, additional, sensor data to test one or more functions of a vehicle—such as a function of an AEB, CMW, LDW, ALC, or ACC system. Sensor data recorded by the sensors may be augmented, transformed, or otherwise updated to represent sensor data corresponding to state information defined by a simulation test profile for testing the vehicle function(s). Once a set of test data has been generated, the test data may be processed by a system of the vehicle to determine the efficacy of the system with respect to any number of test criteria. As a result, a test set including additional or alternative instances of sensor data may be generated from real-world recorded sensor data to test a vehicle in a variety of test scenarios.
Owner:NVIDIA CORP
Steer-by-wire system fault injection device and test method
PendingCN121453437ATesting electric installations on transportVehicle steering/rolling behaviourMultiple sensorEmbedded system
The invention provides a steer-by-wire system fault injection device and a testing method, and belongs to the technical field of steer-by-wire system testing, and the steer-by-wire system fault injection device comprises a power supply fault injection module which comprises a plurality of power supply fault injection units which are respectively connected with a multi-redundancy steer-by-wire system so as to provide power supply fault injection; the communication fault injection module comprises a plurality of communication fault injection units which are respectively used for being connected with the multi-redundancy steer-by-wire system so as to provide communication fault injection; the steering sensor fault injection module comprises a plurality of sensor fault injection units which are respectively used for being connected with the multi-redundancy steer-by-wire system so as to provide steering sensor fault injection; and the control chip is used for controlling the actions of each power supply fault injection unit, each communication fault injection unit and each sensor fault injection unit. The method can be suitable for a redundant system, can cover most fault types of the SBW system, can simulate combined faults, and has expansibility.
Owner:DONGFENG MOTOR GRP
Device and method for detecting connection stability of automobile wire harness connector
The invention discloses an automobile wire harness joint connection stability detection device and method, and the device comprises an endless belt, the outer wall of the endless belt is fixedly sleeved with two symmetrically arranged bumpy pavement simulation belts, and the two bumpy pavement simulation belts are provided with an automobile simulation mechanism. The automobile simulation mechanism is provided with a plurality of groups of automobile wire harness connector plugging test mechanisms. The invention relates to the technical field of automobile wire harnesses. The pothole pavement simulation belt is driven to operate through the circulating belt, meanwhile, the electric push rod is matched with the piston cylinder, the bulging state of the rubber skin can be flexibly controlled, and various real road conditions such as bumping stability and instability are accurately simulated.
Owner:HAIYANG SANXIAN PRECISION IND CO LTD
An axle steering mechanism testing device and testing method
The application relates to a vehicle axle steering mechanism test device, which comprises a vertical loading module of a to-be-tested vehicle axle, a steering driving module, and a torque loading module. The vertical loading module is arranged on the to-be-tested vehicle axle and is used for applying a vertical load to the to-be-tested vehicle axle. The output end of the steering driving module is connected with a steering knuckle arm of the to-be-tested vehicle axle and is used for driving the to-be-tested vehicle axle to perform a steering action. The torque loading module is respectively connected with two wheel edge output ends of the to-be-tested vehicle axle and comprises a universal connecting unit and a torque loading unit. The universal connecting unit is used for providing multi-degree-of-freedom constraint. The torque loading unit is used for loading torque. The application innovatively constructs a highly integrated, multi-axis linkage comprehensive test bench. The modules can effectively simulate the actual stress of the vehicle axle when the vehicle turns or goes uphill during testing through mutual cooperation, effectively solve the problem that the existing test bench has single function and cannot simulate a composite working condition, improve the efficiency and convenience of performance and durability testing, and fill the industry gap.
Owner:XIANGYANG DAAN AUTOMOBILE TEST CENT
Test bench system for driver assistance technology and procedures
The present invention relates to a test bench system (100) for testing driver assistance technology on a vehicle (200), comprising a rolling device (20) with at least one rotatably mounted rolling element (22) and an environment emulation device (30). Essential to the invention are a static fixing device (10) with at least one fixing contact surface (11) for establishing contact between the test bench (100) and a vehicle body (201) and a lowering mechanism (21) for guiding a lowering movement (A) of the at least one rolling element (22) relative to the fixing device (10).
Owner:AVL ZOELLNER
Fatigue test device for automobile electric power steering system assembly
PendingCN120971052AMachine part testingVehicle steering/rolling behaviourElectric power steeringHydraulic cylinder
The invention relates to a fatigue test device for an automobile electric power steering system assembly, and belongs to the technical field of new energy automobile accessory testing, the fatigue test device comprises a test machine body and an automobile electric power steering gear device arranged outside the test machine body, the test machine body comprises a base, a vertical plate, a hydraulic cylinder, a moving plate and a steering fatigue test machine, a knocking structure for periodically knocking the automobile electric power steering gear device is arranged outside the moving plate, the automobile electric power steering gear device comprises an automobile electric power steering gear body and a steering wheel, and an inclination structure for performing inclination adjustment on the steering fatigue testing machine is arranged at the top of the base. The fatigue test device for the automobile electric power steering system assembly has the advantages of being high in test accuracy and the like, synchronous simulation of steering, knocking and inclination is achieved, complex dynamic loads in actual driving are effectively restored, and the test accuracy, comprehensiveness and reliability are remarkably improved.
Owner:CHONGQING XINBOZHI ELECTROMECHANICAL CO LTD
Evaluation methods, systems, equipment, and media for first-order ride comfort testing of whole vehicles
PendingCN122130380ASustainable transportationNavigation by speed/acceleration measurementsEvaluation resultVibration acceleration
This application provides a method, system, equipment, and medium for evaluating the first-order ride comfort of a vehicle, belonging to the field of vehicle engineering and testing technology. The evaluation method includes: acquiring gyroscope signals and triaxial vibration acceleration signals at each measuring point of the vehicle at at least two vehicle speeds on various test roads, including at least long-wave impact surfaces and short-wave disturbance surfaces; processing the gyroscope signals to obtain attitude evaluation parameters characterizing the amplitude of the vehicle's first-order motion; performing frequency domain analysis on the triaxial vibration acceleration signals to obtain vibration evaluation parameters characterizing the abruptness of the vehicle's first-order motion; and evaluating the first-order ride comfort of the vehicle based on the attitude evaluation parameters and vibration evaluation parameters to obtain the evaluation results. This application achieves the separation and quantification of the amplitude and texture of the vehicle's first-order rigid body motions such as pitch, roll, and vertical sway, providing comprehensive and accurate evaluation results that effectively support subjective evaluation and chassis tuning.
Owner:SAIC GM WULING AUTOMOBILE CO LTD
Vehicle steering system hydraulic internal leakage fault diagnosis method and system based on Bo-Transformer-LSTM
ActiveCN119810951BMathematical modelsInternal combustion piston enginesTransformerControl engineering
The present invention provides a Bo-Transformer-LSTM-based vehicle steering system hydraulic internal leakage fault diagnosis method and system, relating to the field of fault detection technology. The method comprises steps S1: obtaining fault data of a multi-axle special vehicle hydraulic steering system leaking at a preset fault level; S2: normalizing the fault data and dividing the normalized fault data into a training set and a test set according to a preset ratio; and S3: segmenting the input fault data and inputting it into a Bo-Transformer-LSTM model. The hyperparameters of the Bo-Transformer-LSTM model are optimized using a Bayesian algorithm to obtain the optimal parameter combination, and the trained Bo-Transformer-LSTM model is saved. This method can solve the problem of difficulty in accurately locating faults due to the large number of components and strong nonlinearity in hydraulic systems.
Owner:ROCKET FORCE UNIV OF ENG
Middle point correction device of steering torque sensor, method, and program
To provide a middle point correction device, a method, and a program which can perform middle point correction without requiring any special device when no torque is applied to a steering shaft.SOLUTION: A middle point correction device 100 performs middle point correction of a steering torque sensor in a vehicle 102 including: an EPS device 12 for applying control torque to a steering transfer system 34 between a steering wheel 14 and steered wheels 16FL, 16FR; and a steering torque sensor 38 arranged in the steering transfer system. The middle point correction device includes: a non-volatile storage unit 50A; and a control unit 50 for performing a remote operation control of the vehicle. The control unit stores, when performing the remote operation control, steering torque Ts detected by the steering torque sensor as middle point offset amount Tsoff into the storage unit, reads out the middle point offset amount from the storage unit during traveling of the vehicle, and corrects the steering torque detected by the steering torque sensor by the middle point offset amount to perform the middle point correction.SELECTED DRAWING: Figure 1
Owner:TOYOTA JIDOSHA KK
Torsional fatigue test equipment for automobile transmission shaft assembly
The invention belongs to the field of shaft testing, and particularly relates to automobile transmission shaft assembly torsional fatigue testing equipment which comprises a testing seat, a driving table used for controlling a to-be-tested shaft to rotate is arranged in the middle of the testing seat, and a moving table connected with the to-be-tested shaft is arranged on the top face of the testing seat. The movable table can change the resistance between the movable table and the test seat, a center seat is arranged in the middle of the test seat, an adjusting column is fixedly connected to the top of the center seat, and multiple monitoring modules used for monitoring fatigue data of a to-be-tested shaft are arranged in the test seat. The real bending moment and radial force brought by revolution are closer to the real stress state of wheel rolling, so that the authenticity of detection data is improved; meanwhile, due to scene simulation during detection, multiple detection data indexes are added, more detection data can be obtained, and a more accurate measurement result can be obtained through the data.
Owner:CHONGQING JIEJIATAI MACHINE MFG CO LTD
Method, device and system for measuring the chassis of motor vehicles
A method for automated chassis measurement of a motor vehicle (6) capable of at least partially autonomous driving, wherein the chassis measurement method comprises transmitting commands to the motor vehicle (6), in particular to a control unit (9) in the motor vehicle (6), which cause the motor vehicle (6) to independently make changes to the axle geometry of the motor vehicle (6), in particular steering angles, in order to successively bring the axle geometry of the motor vehicle (6) into different states; and measuring the axle geometry of the motor vehicle (6) in the different states.
Owner:BEISSBARTH AUTOMOTIVE TESTING SOLUTIONS GMBH
An angle module test bench
ActiveCN119043738BMachine part testingVehicle steering/rolling behaviourControl engineeringStructural engineering
The application discloses a corner module test bench, which solves the technical problem of single test equipment. The corner module test bench comprises a test platform, a vehicle body simulation piece, a steering measurement device, a road surface simulation test device and a controller. The test platform comprises a base and a mounting rack. The vehicle body simulation piece is arranged on the mounting rack and is in sliding connection with the mounting rack, and is used for being connected with the corner module. The steering measurement device comprises a chuck and one or more detection arms. One or more position sensors are arranged on the detection arms. The road surface simulation test device comprises a support base, a plurality of protrusions and a driving mechanism for driving the plurality of protrusions to move. The controller is electrically connected with the position sensors, the driving mechanism and the corner module to be tested. The corner module test bench can perform multiple tests, and multiple tests can be performed through one test bench. The structure is compact, the operation is simple, and the corner module test bench is suitable for corner modules of different specifications. The test method is various, and various performance indexes of the corner module can be evaluated.
Owner:DONGFENG MOTOR GRP
Debugging table for electronic power-assisted tubular column
ActiveCN223426282UWork holdersVehicle steering/rolling behaviourStructural engineeringMechanical engineering
Owner:CHONGQING XINSHENG ZHIBO TECH CO LTD
Test bench and test method for Rattle abnormal sound test of steering column
The invention relates to the field of abnormal sound testing, discloses a test bed and a test method for Rattle abnormal sound testing of a steering column, and aims at solving the industry blank that a steering engine assembly needs to be assembled, linear excitation is adopted, and the steering column cannot be independently and accurately tested in the existing test. And the driving seat which can slide front, back, left and right and can adjust the inclination angle is matched, so that independent installation and accurate positioning of the steering column single bodies are realized, and butt joint can be completed without depending on a steering machine. The driving part output shaft directly transmits instantaneous torque impact, the road bumping working condition is accurately simulated, traditional linear excitation is replaced, the blank of industry special tests is filled up, the test pertinence and authenticity are improved, meanwhile, steering columns of different specifications are adapted, and the universality is high.
Owner:CHINA AUTOMOTIVE ENG RES INST +1