Simplified planar model of a car steering system with rack and pinion and McPherson suspension

Scientific Conference on Automotive Vehicles and Combustion Engines 2016

Knapczyk, J.^1,2 ; Kucybala, P.^1

Cracow University of Technology, Faculty of Mechanical Engineering, Poland^1

State Higher Vocational School in Nowy Sacz, Poland^2

关键词: Angular displacement;    Input and outputs;    Linear correlation;    McPherson suspensions;    Rack and pinions;    Spatial modeling;    Steering linkage;    Transmission angle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/148/1/012011/pdf
DOI  :  10.1088/1757-899X/148/1/012011

来源: IOP

【 摘 要 】

The paper presents the analysis and optimization of steering system with rack and pinion and McPherson suspension using spatial model and equivalent simplified planar model. The dimension of the steering linkage that give minimum steering error can be estimated using planar model. The steering error is defined as the difference between the actual angle made by the outer front wheel during steering manoeuvers and the calculated angle for the same wheel based on the Ackerman principle. For a given linear rack displacement, a specified steering arms angular displacements are determined while simultaneously ensuring best transmission angle characteristics (i) without and (ii) with imposing linear correlation between input and output. Numerical examples are used to illustrate the proposed method.