Title: Application of subspace-based method in vehicle handling dynamic model identification and properties estimation

Authors: Yuan Ming; Guan Xiqiang; Jian-Wu Zhang; Xi-Qiang Guan; Ming Yuan

Addresses: 800 Dongchuan Road, Min Hang, Shanghai, 200240 Shanghai Jiaotong University, China ' 800 Dongchuan Road, Min Hang, Shanghai, 200240 Shanghai Jiaotong University, China ' State Key Laboratory for Mechanical System and Vibration, Institute of Automotive Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road., Shanghai 200240, China ' State Key Laboratory for Mechanical System and Vibration, Institute of Automotive Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road., Shanghai 200240, China. ' State Key Laboratory for Mechanical System and Vibration, Institute of Automotive Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road., Shanghai 200240, China.

Abstract: In this paper a subspace-based method is proposed for the system identification of vehicle handling dynamic models. According to vehicle performance test measures acquired from standard road test operations, the vehicle system model is identified by the method and further steady dynamic behaviours of the vehicle prototyping may be estimated and the dynamic performance of the vehicle handling can be predicted. For the purpose of reduction of cost and risk in vehicle handling performance tests, lateral dynamic behaviours of the vehicle are examined. Numerical examples are made by the present method for the vehicle|s lateral dynamic behaviours under two different types of manoeuvres. It is demonstrated by comparison between simulations and experiments of understeer coefficient and overall steering ratio of the vehicle dynamic handling performance that the present method is efficient and applicable.

Keywords: system identification; vehicle handling dynamics; subspace method; steady-state properties estimation; dynamic modelling.

DOI: 10.1504/IJVD.2011.043260

International Journal of Vehicle Design, 2011 Vol.56 No.1/2/3/4, pp.125 - 145

Received: 15 Apr 2009
Accepted: 11 Feb 2010
Published online: 10 Apr 2015 *

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