Study on Steering by Wire Controller Based on Improved H8 Algorithm
With the continuous development of vehicle and electronic
industry, SBW (Steering by Wire) is replacing the traditional
steering device of vehicle. Firstly this paper introduces the
principle and structure of SBW, then discusses how to model the
kinetic equation of SBW and how to simplify the model
reasonably, and then obtains the control model of SBW. To meet
the system requirement of robust performance, this paper selects
the control strategy based on H? algorithm. According to the
further observation and study on the curve of S/T singular value
in H? algorithm, put forward a method which constructs a
closed loop function and then back-step the system controller on
the basis of key parameter in system frequency. The analysis of
the time domain and the frequency domain of SBW, the
simulation result under the interference and parameter
perturbation of the model show that the controller designed by
this method is simple and effective, and the controller owns
perfect robust stability and robust performance.
Keywords: Steering by Wire, Robust, H? algorithm
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ABOUT THE AUTHORS
Huipeng Chen
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Qiqi Yu
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Lingjun Zhu
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Guojin Chen
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Huipeng Chen
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Qiqi Yu
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Lingjun Zhu
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
Guojin Chen
School of Mechanical Engineering, HangZhou DianZi University, Hangzhou 310018, Zhejiang, China
