Novel electronic power steering system testing platform and testing method thereof

An electric power steering and system testing technology, applied in the direction of vehicle steering/bump performance, etc., can solve the problems of high cost, low test accuracy and control response speed, and achieve simple control, improved response speed and control accuracy, and fast response. Effect

Active Publication Date: 2016-05-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a new electric power steering system test platform and test method, which can realize fast and high-precision damping torque control at a lower cost and simultaneously simulate steering torque interaction, aiming at overcoming the cost Too high, test accuracy and control response speed are not high, etc.

Method used

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  • Novel electronic power steering system testing platform and testing method thereof
  • Novel electronic power steering system testing platform and testing method thereof
  • Novel electronic power steering system testing platform and testing method thereof

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specific Embodiment approach 1

[0036] Specific implementation mode one: as Figure 1 to Figure 5 As shown, this embodiment describes a new electric power steering system test platform, including an input loading and detection device 1, a test bench overall platform 2, a test piece EPS system 3, a damping loading device 4, a vehicle dynamics simulation and Driving road condition simulation system 5, upper computer control and signal processing system 6, data analysis storage system 7 and clamping mechanism 8;

[0037]The input loading and detection device 1 is fixed on the overall platform 2 of the test bench, and the input loading and detection device 1 includes an input shaft 1-1, an input shaft support 1-2, a synchronous pulley 1-3, a servo motor 1-4, Reducer 1-5, timing belt 1-6, coupling one 1-7, torque sensor one 1-8, angle sensor one 1-9, bottom plate 1-10, steering wheel 1-11, coupling two 1- 12; the steering wheel 1-11 is installed on the input shaft 1-1, the input shaft support 1-2 supports the st...

specific Embodiment approach 2

[0039] Specific implementation mode two: as figure 1 , image 3 and Figure 4 As shown, a new electric power steering system test platform described in Embodiment 1, the damping loading device 4 includes a magnetic powder brake 4-1, a servo motor 2 4-2, a reducer 4-3, and a shaft coupling Three 4-4, rack and pinion transmission mechanism 4-5 and torque sensor two 4-6;

[0040] The output end of the servo motor 2 4-2 is connected to the input shaft of the reducer 4-3, the output shaft of the reducer 4-3 is connected to the gear shaft of the rack and pinion transmission mechanism 4-5, and the rack and pinion transmission mechanism 4-5 transmits the steering horizontal The moving force of the pull rod converts linear motion into rotary motion. The output end of the gear shaft of the rack and pinion transmission mechanism 4-5 is connected to the torque sensor 2 4-6, and the output end of the torque sensor 2 4-6 is connected to the magnetic powder brake. The input end of 4-1 is ...

specific Embodiment approach 3

[0041] Specific implementation mode three: as Figure 5 As shown, a new type of electric power steering system test platform described in Embodiment 1, the clamping mechanism 8 includes two screw rods one 8-1, two lock nuts one 8-2, two screw rods two 8-3, two lock nuts 2 8-4, V-shaped slider 8-5 and installation frame 8-6;

[0042] The V-shaped slider 8-5 is arranged in the installation frame 8-6, and the two screw rods 8-1 are respectively fixed on the installation frame 8-6 by a lock nut 8-2, and the two screw rods 8-1 are the same. The shaft is set, the clamping tops of the two screw rods 8-1 are arranged oppositely, and the clamping end of one of the screw rods 8-1 corresponds to the V-shaped opening of the V-shaped slider 8-5; the two screw rods 8-1 -3 are each fixed on the installation frame 8-6 by a locking nut 2 8-4, two screw rods 8-3 are coaxially arranged, and the two screw rods 8-3 and two screw rods 8-1 are horizontal and vertical Setting, the clamping tops of ...

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Abstract

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.

Description

technical field [0001] The invention relates to a novel electric power steering system test platform and a test method, which belong to the technical field of testing electronic products of automobile chassis. Background technique [0002] Automotive electric power steering system (electronic power steering, referred to as EPS) is a mechatronic control system, compared with the traditional hydraulic power steering system does not require hydraulic pumps, hydraulic lines and hydraulic oil; the hydraulic pump of the hydraulic power steering needs to be Work, the electric power steering motor only works when steering assistance is required, saving energy. The electric power steering system can provide assistance with the speed of the vehicle, and provide different assistance according to the control strategy to make the driving feel good and the driving operation easy. The wide application of electric power steering is generally accepted by people. In the process of developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/06
CPCG01M17/06
Inventor 郭永丰马鑫磊冯业瑞杨念胡淼
Owner HARBIN INST OF TECH
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