吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1043-1048.doi: 10.13229/j.cnki.jdxbgxb201504003

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Objective evaluation indices of steering performance for EPS based on sensitivity analysis

ZHANG Ze-xing, CHEN Guo-ying, ZONG Chang-fu   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
  • Received:2013-12-16 Online:2015-07-01 Published:2015-07-01

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Abstract: A co-simulation platform of Electric Power Steering (EPS) system and vehicle model is built using CarSim and Simulink. Three levels of EPS parameters for sensitivity analysis are defined and their actual ranges are given according to vehicle measurement and debugging experience. The sensitivity analysis of the EPS parameters and two evaluation indices for steering performance is conducted on Isight software by employing orthogonal test and extreme difference analysis method. Meanwhile, using dynamic analysis the interaction relationship among these parameters and indices investigated. Then, the vehicle tests are conducted on the test platform of EPS vehicle under three levels of EPS parameters. Results indicate that the conclusions of sensitivity analysis conform to the response characteristics of the EPS vehicle. The results may provide guidance to debug and calibrate the parameters of EPS.

Key words: vehicle engineering, EPS, steering performance, orthogonal test, sensitivity analysis, Isight software, vehicle test

CLC Number: 

  • U467.1
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