Control Analysis of Vehicle Steering System based on Closed-Loop Control Algorithm

被引：0
作者：
Yang H. [1 ]
Zhang B. [1 ]
Liu Y. [1 ]
机构：
[1] School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo
来源：
EEA - Electrotehnica, Electronica, Automatica | 2023年 / 71卷 / 01期
关键词：
Closed-Loop Control Algorithm; Optimal Control; Steering System; Vehicle;
D O I：
10.46904/eea.23.71.1.1108006
中图分类号：
学科分类号：
摘要：
When a four-wheel vehicle turns and the steering centre of the front and rear wheels is one point, it is regarded as the theoretical optimal steering of the vehicle and the goal of optimal control. Aiming at the commonly used multi-link steering system, the system control was analysed, according to the structural characteristics and angle relationship. Based on the closed-loop control algorithm, the optimal control of the steering system was designed and analysed, according to the steering control quantity obtained by the target path and parameter feedback. At the same time, the state variables and prediction parameters of the system were analysed. Based on the actual vehicle and steering optimal control system, the changes of various parameters of vehicle operation under no-load condition and turning at 30 km/h were analysed and compared with the theoretical optimal value to verify the effectiveness of the control system. The results show that: the state variables of the control system are predicted by discrete analysis and half step integration, and the accuracy is high. In the steady state turning condition, with the lifting of the vehicle, the radius of the steering track gradually increases, and the vehicle shows obvious understeer characteristics. Under the two working conditions, the characteristic curves obtained by the steering control system are highly consistent with the theoretical values, and the peak error of the two is controlled within 5%, indicating the reliability of the optimal control algorithm, which provides a reference for such design optimization. © 2023, Editura ELECTRA. All rights reserved.
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页码：53 / 63
页数：10
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