Application of an Optimal Control Algorithm on ABS for an Electric Vehicle

Shengxiong Sun, Zhidong Qin, Cheng Lin, Wanke Cao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Promotion of pure electric vehicle (EV) has become a trend, of which the braking performance is very important. In this paper, by using a family of curves of the relationship between adhesion coefficient and sliding rate of an electric vehicle on different roads, to elect the sliding rate corresponding to the peak value of adhesion coefficient, and then the mathematical models of EV braking process are established and the dynamics differential equation is obtained. According to the optimal control theory, appropriate state vector and control vector based on the dynamic mathematical model of vehicle-road system are selected, and a quadratic performance index of the minimum error between actual output and expected output with the minimum energy consumption of the hydraulic braking system in time domain are proposed as well. Typical working condition parameters are selected as the initial condition to calculate series of control parameters of the optimal control model by Riccati matrix algebra equation. In MATLAB/simulink vehicle anti-lock braking system model is established, and by simulation graphs of wheel velocity response show that, the wheel velocity can satisfy the slide requirements well by using optimal feedback control algorithm for EV with more advanced ECU system.

Original languageEnglish
Title of host publicationICTE 2015 - Proceedings of the 5th International Conference on Transportation Engineering
EditorsQiyuan Peng, Bingzhi Chen, Kelvin C. P. Wang, Xiaobo Liu
PublisherAmerican Society of Civil Engineers (ASCE)
Pages3219-3225
Number of pages7
ISBN (Electronic)9780784479384
DOIs
Publication statusPublished - 2015
Event5th International Conference on Transportation Engineering, ICTE 2015 - Dalian, China
Duration: 26 Sept 201527 Sept 2015

Publication series

NameICTE 2015 - Proceedings of the 5th International Conference on Transportation Engineering

Conference

Conference5th International Conference on Transportation Engineering, ICTE 2015
Country/TerritoryChina
CityDalian
Period26/09/1527/09/15

Keywords

  • Braking performance
  • Electric vehicle
  • Optimal control
  • Sliding ratio

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