Title: Development for generalised multi-axle steering vehicle handling

Authors: Xiang Chen; Kong-hui Guo

Addresses: Department of Automotive Engineering, Tsinghua University, Beijing 100084, China ' State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, Jilin, China

Abstract: This paper devotes main effort to develop the generalised multi-axle steering vehicle handling for more comprehensive analysis with the factors of vehicle body roll, multi-axle, unsprung mass, steering centre distance, steering ratio coefficient and steering delay. A linear vehicle dynamic model is established firstly. Then the multi-axle steering vehicle handling is analysed from two aspects of steady-state and transient-state. For the steady-state, the expressions of equivalent wheelbase and steady factor are derived from the generalised vehicle dynamic equations and some special conditions are discussed inextenso. For the transient-state, the expressions of frequency characteristics and root locus are deduced from the generalised vehicle dynamic equations and the influences of steering delay and steering ratio coefficient to multi-axle steering vehicle handling are analysed deeply. The corresponding results derived from the generalised dynamic model can be used for analysing the various influences to multi-axle steering vehicle handling.

Keywords: multi-axle steering vehicle handling; vehicle dynamic model; steady-state characteristics; transient-state characteristics.

DOI: 10.1504/IJHVS.2020.112971

International Journal of Heavy Vehicle Systems, 2020 Vol.27 No.6, pp.777 - 799

Received: 02 Mar 2018
Accepted: 14 May 2018
Published online: 12 Feb 2021 *

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