Title: PID control for active hydropneumatic suspension based on the feedback linearisation

Authors: Jun-Wu Shi, Xiao-Wei Li, Jian-Wu Zhang

Addresses: State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong-Chuan Road, Shanghai, PR China. ' State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong-Chuan Road, Shanghai, PR China. ' State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong-Chuan Road, Shanghai, PR China

Abstract: Based on modelling and experimental validation of the hydropneumatic spring, a non-linear dynamic model is developed for the active hydropneumatic suspensions of missile launching vehicle. In order to fulfil the special requirements of mobile launching, the non-linear system is transformed into a linear one by means of feedback linearisation (FBL) according to the theory of differential geometry. Furthermore, a PID control approach is applied for the solution to the system of equations. It is indicated by the simulation results that the present non-linear controller combining the FBL with linear control algorithm is characterised with its fairly simple structure and good performance.

Keywords: active suspension; hydropneumatic suspension; differential geometry; feedback linearisation; hydropneumatic springs; PID control; vehicle suspensions; vehicle vibration; missile launching; launch vehicles; nonlinear controllers; linear control; modelling.

DOI: 10.1504/IJVNV.2009.029198

International Journal of Vehicle Noise and Vibration, 2009 Vol.5 No.1/2, pp.158 - 174

Published online: 09 Nov 2009 *

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