Product
Feature
Quick Research
Generate reliable direction feasibility study reports for your R&D in just a few steps.
Technical Q&A
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
Find Solutions
As an expert in R&D theories, this can generate solutions to your technical problems instantly.
Evaluate Feasibility
Analyze your overall solution with one click, know your potential R&D risks in advance.
Monitor Landscape
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
853results about "Vehicle steering/rolling behaviour" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Trailer motion and parameter estimation system
ActiveUS9340228B2Linear/angular speed measurementVehicle steering/rolling behaviourSensor systemAuxiliary system
A trailer backup assist system for a vehicle reversing a trailer includes a sensor module adapted to attach to the trailer and generate a trailer yaw rate or a trailer speed. The trailer backup assist system also includes a vehicle sensor system that generates a vehicle yaw rate and a vehicle speed. Further, the trailer backup assist system includes a controller that estimates a hitch angle based on the trailer yaw rate or the trailer speed and the vehicle yaw rate and the vehicle speed in view of a kinematic relationship between the trailer and the vehicle.
Owner:FORD GLOBAL TECH LLC
Apparatus for the method of testing vehicle
InactiveUS6427528B1Vehicle steering/rolling behaviourApparatus for force/torque/work measurementGravitational forceEngineering
Provided is a vehicle testing apparatus which involves load variation and alignment variation, for analyzing a maneuverability of a vehicle on flat belts or rollers adapted to be rotated together with wheels of the vehicle, and in particular, maneuver variation. Load variation caused by an inertia force and a gravitational force which are produced during actual running of the vehicle, and tire alignment variation caused by suspension strokes, are forcibly reproduced by forces produced by actuators or a gravitational force, thereby it is possible to evaluate a maneuverability of the vehicle in a condition substantially the same as that during actual running of the vehicle.
Owner:HITACHI PLANT TECH LTD
Automobile electric power-assisted steering system simulation testing arrangement
InactiveCN1595091ASpeed up developmentCutting costsVehicle steering/rolling behaviourSteering systemData acquisition
This invention discloses an artificial apparatus of mobile booster steering system which is servo-motor used to mock the resistance force the mobile exerts on the output axis of the steering and to transmit the torque signals to the data collection card. The servo motor controller is connected with the data collection card, which is used to control the torque of the resistance servomotor. The current sensor is used to measure the motor current of the EPS, and provide a proportional voltage signals to the motor current for the data collection card. The angle sensor locates on top of the steering wheel and is used to measure the angle of the wheel and provide angle signals to the data collection card. The computer collects and transmits control orders through the data collection card and processes the data and gets the measurement results.
Owner:HUAZHONG UNIV OF SCI & TECH
Method and apparatus for engine torque sensing
ActiveUS7389682B2Minimal required modificationLower packagingEngine testingWork measurementEngineering
An engine torque sensory system (10), adapted for use with an engine-driven vehicle (12) having a flexplate (18), including at least one sensor (26) fixedly attached on the surface of the flexplate (18) and operable to detect deformations along the surface of the flexplate (18) caused by the generated engine torque, and further including a receiver (28) communicatively coupled to the sensor (26), spaced from the rotating flexplate (18), and operable to convert sensor readings to correlative engine torque values.
Owner:GM GLOBAL TECH OPERATIONS LLC
Device for testing performance of automotive steering system
InactiveCN101696908AReliable test resultsCompact structureVehicle steering/rolling behaviourTest performanceSteering column
The invention discloses a device for testing the performance of an automotive steering system, comprising a steering simulating system, an axial loading system, a suspension fork simulating system and an automotive steering system, wherein the steering simulating system is used for simulating the rotation of a steering wheel in an automatic and manual mode; the axial loading system is used for simulating a steering load and loading the steering load to the automotive steering system (comprising a steering column, a steering gear, a tie rod and a simulation steering knuckle) through a Bell mechanism; the suspension fork simulating system is used for simulating wheel jumpiness during driving. The device for testing the performance of the automotive steering system is used for experimenting and testing the steering performance of an automotive steering in various driving conditions, such as experiments and tests of kinematic and mechanic parameters of full angle, transmission ratio characteristic, transmission clearance characteristic, transmission efficiency characteristic, driving moment, rigidity, relationship between steering performance and suspension fork jumpiness and the like. The device directly simulates the steering wheel to load the automotive steering through the Bell mechanism, so that the testing result is closer to a real working condition.
Owner:CHONGQING UNIV OF TECH
Vehicle testing apparatus for measuring a propensity of a vehicle to roll over
InactiveUS7058488B2Material analysis using sonic/ultrasonic/infrasonic wavesRegistering/indicating working of vehiclesEngineeringTest facility
Owner:BURKE E PORTER MACHINERY
Test method and device applied to driverless vehicle
ActiveCN107063713AAvoid security risksRegistering/indicating working of vehiclesCharacter and pattern recognitionEnvironmental sensingReal-time computing
The present invention discloses a test method and device applied to a driverless vehicle. According to one embodiment of the invention, the method includes the following steps that: a terminal sends location information to a driverless vehicle in a test site; when a location in a real driving environment, which is corresponding to the driverless vehicle, is a preset location, environment sensing information of a preset event corresponding to the preset location is sent to the driverless vehicle; and the output information of a functional module is obtained, and whether the functional module is normal is judged based on the result of the comparison of the output information and preset information corresponding to the functional module. With the test method and device of the invention adopted, whether the functional modules of the driverless vehicle during various kinds of events in the real driving environment are normal can be tested, and the safety risks of tests in the real driving environment can be avoided.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
Brake-by-wire and steer-by-wire hardware-in-the-loop test bench for vehicle
InactiveCN101561353AThe simulation prediction results are accurate and reliableReduce development difficultyVehicle steering/rolling behaviourData acquisitionCurrent sensor
The invention discloses a brake-by-wire and steer-by-wire hardware-in-the-loop test bench for a vehicle. The test bench integrates a brake-by-wire system and a steer-by-wire system into a whole, and is divided into a software part, a real-time platform, a signal processing part and a hardware part, wherein the real-time platform consists of a host and target machines 1 and 2; the host and the target machines 1 and 2 are connected by a wireless network communication system; the signal processing part consists of first and second data acquisition cards with the model of PCL-818HD, third and fourth data acquisition cards with the model of PCL-727, a fifth data acquisition card with the model of PCI-6601 and a V / F conversion module; and the hardware part comprises a rotary angle sensor (12), a torque transducer (13), an opposite rotary motor (16), a steering resistance sensor (21), a steering actuating motor (18), an EMB actuator controller, and EMB actuator, a clamping force sensor, a revolution transmitter and a current sensor.
Owner:JILIN UNIV
Adaptive vehicle control system with driving style recognition and road condition recognition
An adaptive vehicle control system that classifies a driver's driving style based on characteristic maneuvers and road and traffic conditions. The system includes a plurality of vehicle sensors that detect various vehicle parameters. A maneuver identification processor receives the sensor signals to identify a characteristic maneuver of the vehicle and provides a maneuver identifier signal of the maneuver. The system also includes a road condition recognition processor that receives the sensor signals, and provides road condition signals identifying road conditions. A style characterization processor receives the maneuver identifier signals, sensor signals from the vehicle sensors and the road condition signals, and classifies driving style based on the signals to classify the style of the driver driving the vehicle.
Owner:GM GLOBAL TECH OPERATIONS LLC
Comprehensive performance test rig of vehicle electric power steering system
ActiveCN103792098AImprove real-time performanceReal-time Dynamics Simulation EnvironmentVehicle steering/rolling behaviourElectrical controlVehicle dynamics
The invention provides a comprehensive performance test rig of a vehicle electric power steering system. The comprehensive performance test rig includes a rack part, an electric control part and a computer control system; and the rack part comprises a base, a rotary table, a fixture clamp plate, a C-EPS fixture clamp, an input terminal driver, a C-EPS output terminal loading device, a P / R-EPS output terminal loading device, a fixture clamp bench, and an adverse impact part. The comprehensive performance test rig of the invention can comprehensively test three types of electric power steering systems, wherein the three types include a C-EPS, a P-EPS and an R-EPS. Compared with a conventional electric power steering test rig, the control system has good real-time performance, can provide the real-time vehicle dynamics simulation environment, and can provide the comprehensive high-precision multiple performance tests of three types of the EPS.
Owner:ZF AUTOMOTIVE TECH SHANGHAI CO LTD
Method and system for evaluating driving conditions of a vehicle
The method and system to evaluate driving conditions of a vehicle whereby drivability of the vehicle can be evaluated accurately and objectively. To evaluate drivability of the vehicle under different driving conditions, a plural pieces of driving load information including biological information on a driver and movement information of the vehicle being driven are measured. Then, a group of weighting coefficients as many as or fewer than pieces of the driving load information is selected from groups of weighting coefficients that are set according to representative values of the driving load information in order to use a weighted linear sum of the representative values of the driving load information as an index of an integrated evaluation of the drivability of the vehicle. Subsequently, a weighted linear sum is obtained using the selected group of weighting coefficients and used to perform the integrated evaluation of the drivability under various driving conditions.
Owner:THE YOKOHAMA RUBBER CO LTD
Durability testing stand of electric power-assisted steering system
InactiveCN101017117ASimple structureReduce manufacturing costMachine part testingVehicle steering/rolling behaviourElectric power steeringReduction drive
This invention relates to one motor aid rotation system life test bench, which comprises tested EPS sample, signal generation module, display meter module and load device, wherein, the EPS sample comprises rotation disc, rotation part, rotation sensor and motor bus and controller; controller is to send the voltage signal into motor bus and to sensor with work power and to send the fault signal into display meter module; motor bus is connected with mechanic system through acceleration device with output end connected with load device; signal generation module is connected to controller, display device module.
Owner:TSINGHUA UNIV +1
Electric power steering system
ActiveUS20130090809A1Steering initiationsDigital data processing detailsElectric power steeringMicrocomputer
A power relay is provided in a power line, which supplies power from a power source to a motor through an inverter circuit, to shut off power supply from the power source to the inverter circuit when an abnormality arises. A microcomputer diagnoses a short-circuit failure of the power relay when a steering wheel is not steered during a normal control operation of assisting the steering operation of the steering wheel. An EPS shuts off power supply by the power relay when the steering wheel is not steered, so that the short-circuit failure of the power relay is diagnosed without affecting the assist operation for the steering wheel.
Owner:DENSO CORP
Electric steering system test bench and test method thereof
ActiveCN105157997ARich developmentShorten development timeVehicle steering/rolling behaviourSteering columnControl signal
The invention provides an electric steering system test bench and a test method thereof. Multiple items of test can be carried out on the electric steering system before whole vehicle assembly, the electric steering system can be developed perfectly, and the whole vehicle development time is saved. The electric steering system test bench is composed of a torque steering wheel, a mechanical steering gear assembly with a lateral drawbar, a signal conversion module capable of converting inputted control signals into CAN signals, and a power supply module, wherein the end part of the lateral drawbar of the mechanical steering gear assembly is connected with a force sensor and / or a loading device for providing load. The electric steering system test method comprises the following steps: a steering column of the to-be-tested electric steering system and the mechanical steering gear assembly are mounted together, the torque steering wheel is fixedly arranged on the steering column, the signal conversion module and the power supply module are respectively connected with a boosting module of the to-be-tested electric steering system, and then different input output parameters are set according to requirements for realizing different test verification.
Owner:CHERY AUTOMOBILE CO LTD
Automobile power steering system development and performance detection platform
InactiveCN103487265ASave manpower and material resourcesReduce development costsVehicle steering/rolling behaviourSteering columnReduction drive
The invention provides an automobile power steering system development and performance detection platform which comprises a base, wherein a rail disc guide rail is arranged on the base, rail discs are symmetrically arranged in the length direction of the rail disc guide rail, and rail disc horizontal drive devices are connected between the rail discs and the base. The upper surface of each rail disc is symmetrically provided with two arc rail disc sliding grooves in the direction perpendicular to the rail disc guide rail. The two rail disc sliding grooves are respectively provided with a roller set support, the two roller set supports are provided with roller sets, and the roller sets are arranged in wheel tooth-shaped belts in a sleeved mode. Steering wheels are arranged on a front axle and pressed on the tooth-shaped belts, a torque steering wheel is connected with a steering device, a steering column is provided with a hydraulic / electric power mechanism, and the steering device is connected with the steering wheels. An output shaft of a wheel drive servo motor is connected with a main reducer and a differential assembly. The platform on a stage achieves establishment and restoration of complexity of actual running conditions of the steering wheels to the maximum, the structure is simple, and operation is convenient.
Owner:CHANGAN UNIV
Method and system for determining a cornering angle of a tyre during the running of a vehicle
A method and a system for determining a cornering angle of a tyre fitted on a vehicle during running of the vehicle on a rolling surface. The tyre has an equatorial plane. In the method, the length of the contact region between the tyre and the rolling surface is estimated, the length being measured at a distance from the equatorial plane; the load exerted on the tyre is estimated; a camber angle to which the tyre is subjected, is estimated; and the cornering angle is derived from the camber angle, tyre load and contact region length.
Owner:PIRELLI TYRE SPA
Electric power-assisted steering test stand
InactiveCN101393081ASteering resistance simulation with high accuracyImprove real-time performanceVehicle steering/rolling behaviourElectricityElectric power steering
The invention discloses an electric power-assisted steering test bed, which comprises an EPS system assembly and a detection system, and is characterized by further comprising a loading mechanism, a test device control system, wherein the EPS system assembly also comprises a right-steering front-wheel assembly which consists of a steering control arm, a steering knuckle arm and a front wheel, the steering control arm and the steering knuckle arm are connected with the front wheel, the other end of the steering knuckle arm is connected with a steering transverse pull rod, one part of the loading mechanism is linked with a steering rack, the other part of the loading mechanism is linked with the steering control arm, and the test device control system is electrically connected with the EPS system assembly and the loading mechanism. The electric power-assisted steering test bed has high simulation precision of steering resistance and good timeliness of the control system, and can provide a real time dynamics simulation environment of vehicles. The electric power-assisted steering test bed realizes a good platform for performing performance test on the EPS system.
Owner:CHINA FIRST AUTOMOBILE
System and method for evaluating steering control comfort of automobile driver
ActiveCN103278341AEasy to measureEasy to operateVehicle steering/rolling behaviourDriver/operatorComputer-aided
The invention relates to a system and a method for evaluating steering control comfort of an automobile driver. The system comprises an automobile driver kinematics and dynamics parameter test unit and a data processing and analyzing unit, wherein the automobile driver kinematics and dynamics parameter test unit comprises a three-dimensional adjustable cab simulation platform module, a steering wheel resistance moment simulation module, a steering wheel corner and torque test module and a human body kinematics test module; and the data processing and analyzing unit comprises a data filtering module, a data analyzing module and a comfort evaluation module. The method for evaluating the steering control comfort of the automobile driver in the system comprises the steps: collecting kinematics and dynamics parameters of the driver to be tested by using each module in the automobile driver kinematics and dynamics parameter test unit, carrying out filtering, analyzing and evaluation on the collected kinematics and dynamics parameters by using each module in the data processing and analyzing unit, and then completing the evaluation on the steering control comfort of the automobile driver. The system and the method are established and provided, so a scientific basis is provided for man-machine interface design and power-assisted steering system design in the cab, and a scientific and objective evaluation standard can be provided for the comfort evaluation of computer-aided automobile man-machine engineering.
Owner:TSINGHUA UNIV
Method for testing performance of steering system of vehicle on basis of driver model
InactiveCN103823929AReduce wasteShorten the development cycleVehicle steering/rolling behaviourSpecial data processing applicationsTest performanceDriver/operator
The invention aims to provide a system and a method for assisting in designing parameters of a steering system of a vehicle on the basis of a driver model. The method is mainly applied to an initial steering system designing stage, is implemented by the aid of a virtual simulation platform and is used for testing the parameters of an initially designed steering system under the consideration of driving characteristics of a driver. The system for testing the parameters of the steering system of the vehicle comprises the driver model, a vehicle steering system module, a vehicle module, a virtual testing road environment module and an information storage module. The system and the method have the advantages that a driving procedure implemented by a person is simulated in an integral testing procedure, and the parameters of the steering system are changed, so that state response of the vehicle can be acquired; the state response is analyzed, so that the parameters of the steering system can be optimized, and the performance of the steering system can effectively conform to the driving characteristics of the person.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method and system for detecting fail of steering angle sensor in electric power steering apparatus
ActiveUS20080039996A1Registering/indicating working of vehiclesDigital data processing detailsElectric power steeringSteering wheel
A method and system may detect a fail of a steering angle sensor in an electric power steering apparatus. The system may include: a steering angle sensor for generating and transmitting a steering angle signal measuring a rotation angle of a steering wheel; a motor for generating an assistant power for smooth steering and transmitting a current and a voltage based on rotation of the motor; and an Electronic Control Unit (ECU) for receiving the current and the voltage from the motor, sensing the rotation direction of the motor, receiving the steering angle signal from the steering angle sensor, sensing a first rotation direction of the steering wheel, and then, when the rotation direction of the motor is not equal to the first rotation direction of the steering wheel, determining that the steering angle signal has a fail and starting operation of a fail-safe logic.
Owner:HL MANDO CORP
Simulation test bed for novel electro-hydraulic steering system of commercial vehicle
InactiveCN106248406AEasy to moveEasy to adjustVehicle steering/rolling behaviourReal-time simulationElectronic control system
The invention discloses a simulation test bed for a novel electro-hydraulic steering system of a commercial vehicle. The simulation test bed is used for the research of steering characteristics, the development and verification of steering assisting control strategies as well as the monitoring and evaluation of steering control effects of the novel electro-hydraulic steering system of the commercial vehicle. The test bed is composed of a simulation scene display device, a real-time simulation platform, a hydraulic power assisting system, a driver control device, a mechanical steering system, an electric power assisting device, a steering resistance simulation device, a base frame and a seat; the simulation scene display device is used for displaying vehicle states and control effects in real time; the electric power assisting device is used for improving the steering characteristic of the steering system, and integrating other chassis electronic control systems; and the steering resistance simulation device is used for simulating steering resistance between tires and the ground. According to the test bed, based on real-time interaction between the driver and the steering system and the real-time scene simulation of the simulation scene display device, and a hardware platform can be provided for the research of the steering characteristics and the development and verification of the steering assisting control strategies of the novel electro-hydraulic steering system of the commercial vehicle.
Owner:JILIN UNIV
Vehicle shock absorber test-bed by adopting sine transmission device
ActiveCN101793613AEliminate Mechanism Movement ErrorsEasy to detectVehicle steering/rolling behaviourRailway vehicle testingShock absorberElectric motor
The invention discloses a vehicle shock absorber test-bed by adopting a sine transmission device, which comprises a base and a sine transmission device, wherein a vertical column is arranged on the base and provided with a beam which is provided with a fixture, a rotation shaft of a crank disk is connected with a transmission device which is connected with an electromotor, a crank shaft is arranged on the crank disk, the shaft center of the crank shaft is positioned in an eccentric position of the crank disk, the sine transmission device comprises a main sliding block and a secondary sliding block, one end of the sliding block is provided with a bearing seat hole, a bearing is arranged between the bearing seat and the crank shaft, the other end of the secondary sliding block is horizontally and movably connected with the main sliding block, the main sliding block is vertically and movably sleeved on the base, and the main sliding block is provided with a lower fixture matching with the fixture for installing a test piece of a vehicle shock absorber. The invention can effectively remove mechanism kinematic error and has good reliability, convenient manufacturing and replacement and long service life.
Owner:ZHEJIANG UNIV OF TECH
Method and system for modifying a control unit of an autonomous car
ActiveUS10482003B1Efficient modificationSharp and more responsiveGeometric CADAutonomous decision making processAutopilotDriving mode
Sensor data is recorded during testing of a control unit of an autonomous car in an autonomous driving mode. In response to being triggered by a disengagement event, recorded sensor data from an analysis time window prior to the disengagement event is logged. The logged sensor data is processed in a simulator using the control unit to control a virtual autonomous car to identify the inadequately operating component of the control unit. The component may be modified and retested until the disengagement event is avoided in the simulator. The control unit with the modified component may then be used to record new sensor data during testing of the control unit in the autonomous driving mode, and the simulation repeated on the new data.
Owner:AIMOTIVE KFT
Novel electronic power steering system testing platform and testing method thereof
ActiveCN105606382ALow costHigh outputVehicle steering/rolling behaviourElectric power steeringDamping torque
The invention provides a novel electronic power steering system testing platform and a testing method thereof. A steering wheel is installed on an input shaft; a servo motor I uses a reduction box and a synchronous belt to drive the input shaft to make rotation, thereby realizing two kinds of ways of servo loading and hand-operated loading. A torque sensor and an angle sensor are connected to the input shaft. An output terminal of a tested piece electronic power steering (EPS) system a is connected with a damping loading unit by a gear wheel and rack driving mechanism; and bidirectional data transmission among an input loading and detection device, the tested piece EPS system, and an upper computer control and signal processing system is carried out. The upper computer simulates a road condition; and the damping unit is controlled to simulate performance testing and steering hand-feeling testing with a damping moment. The damping loading unit is formed by combination of a magnetic powder brake and a servo motor; the magnetic powder brake outputs a large damping moment; and quick control of the small moment is realized based on characteristics of quick response and precise control of the servo motor. Therefore, precise and quick control of the damping torque of the testing platform is realized on the condition of cost consideration.
Owner:HARBIN INST OF TECH
Method and device for simulating slip on vehicle test benches
InactiveUS20040007046A1Using mechanical meansVehicle steering/rolling behaviourDevice WheelContact force
A device for simulating slip on vehicle test benches wherein a vehicle wheel which rolls on a movable testing surface of a test device such as a test roller or flat belt and performs the object of changing the frictional force between the wheel and the testing surface without necessarily having to change the coefficient of friction, A lifting / lowering device changes the contact force FA of the wheel in a predeterminable way from the tire to an apparatus as the wheel rotates.
Owner:RENK AG
Method, apparatus, and program for evaluating drivability of a vehicle
ActiveUS20100179764A1Low costAccurate comparisonElectromyographySensorsDriver/operatorVehicle driving
A time series myoelectric potential signal is acquired, which is representative of time series activity amount of a muscle of a driver when the driver is performing a driving operation on the vehicle, the muscle being involved in the driving operation. Based on the acquired time series myoelectric potential signal, a parameter value indicative of a fluctuation amount of the time-series myoelectric potential signal and an average value of the myoelectric potential signal are obtained. Drivability of the vehicle is evaluated based on the obtained parameter value and the obtained average value.
Owner:YOKOHAMA RUBBER CO LTD
Electric power steering controller hardware function test board
ActiveCN105738130ALow input costImprove test efficiencyVehicle steering/rolling behaviourElectric power steeringFunctional testing
The present invention discloses an electric power steering controller hardware function test board. The electric power steering controller hardware function test board comprises an upper computer and a simulation signal generation module. A controller to be tested is configured to burn in base hardware function test software; the upper computer is provided with upper computer measurement and control software; the upper computer is configured to send test instructions and simulation parameters to the controller to be tested and receive the test results fed back by the controller to be tested; the upper computer is configured to send the simulation parameters to the simulation signal generation module; the simulation signal generation module is configured to generate simulation signals according to the simulation parameters and instructions sent by the upper computer and output the simulation signals to the controller to be tested; the base hardware function test software of the controller to be tested is configured to control the operation of the controller to be tested according to the test instructions and the simulation parameters, collect the electrical function data of each hardware of the controller to be tested and feed back to the upper computer. The electric power steering controller hardware function test board is able to perform individual test of electrical parameters of the hardware module circuit of the electric power steering controller.
Owner:LIANCHUANG AUTOMOBILE ELECTRONICS
Takeover comfort evaluation method and system for man-machine cooperative control process of automatic driving vehicle and storage medium
PendingCN111861128AImprove driving safetyMathematical modelsCharacter and pattern recognitionDriver/operatorData information
Owner:TSINGHUA UNIV
Performance test system for automobile electric power steering system
InactiveCN105758655AReduce development costsReduce research costsVehicle steering/rolling behaviourPower steeringData acquisition module
The invention belongs to the technical field of automobile electric power steering, and specifically relates to a performance test system for an automobile electric power steering system. The performance test system includes a testing stand pedestal, a motion control mechanism for providing experiment simulation kinetic energy input, and a measurement and control system for performing detection and acquisition of experimental data, wherein the measurement and control system includes a real-time controller, a sensor unit and a data acquisition module; the sensor unit is connected with the real-time controller through the data acquisition module; and the real-time controller is connected with an upper computer. The performance test system for an automobile electric power steering system can complete a performance test for an electric power steering system indoors so as to save the real vehicle experiment to effectively reduce the cost, and is high in accuracy and reliability.
Owner:CHANGAN UNIV
Electric loading test device and method for automobile steering system
The invention provides an electric load test device for automobile steering system. A driving speed signal and a steering wheel rotation angle which is detected by a rotation angle sensor or a displacement sensor are inputted in a controller. According to a vehicle model, the controller calculates and generates a dynamic steering system loading command force signal in real time. The loading command force signal, a practical loading force signal detected by a tension and pressure sensor, and the rotation angle or displacement signal detected by the rotation angle sensor or the displacement sensor are all together inputted in a feedforward compensation module and a PID force closed-loop control module (control scheme 1) or a two freedom degree internal mold force control module (control scheme 2) of the controller to calculate a loading force control signal which is used for loading rectilinear moving force on the gear rack of the steering device of the steering system. The electric load test device has quick system response speed, and can correctly simulate the returnable force of the steering system and high frequency (20Hz-40Hz) vibratory force caused by a plurality of interference factors such as the shimmy of the steering wheel and uneven road surface and so on under varieties of running conditions.
Owner:TRW AUTOMOTIVE COMPONENTS SHANGHAI
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com