主动前转向系统的分析与建模

2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering Pub Date : 2011-09-01 DOI:10.1109/CCIENG.2011.6008110

Shen Bin, Ji Peng-kai

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引用次数: 4

摘要

主动前转向系统提高了汽车的转向舒适性和主动安全性，是近年来转向技术的发展趋势。提出了一种将柱式AFS作动器与小齿轮式电动助力转向系统相结合的新型布局AFS系统，并对其动态特性进行了分析。详细讨论了三种典型的VGR作动器，并提出了一种新的VGR作动器。在此基础上，推导出了AFS转向系统各主要部件的数学动力学公式。利用拉普拉斯变换，介绍了各部件的框图模型。通过系统地组合各部件的模块，建立了AFS系统的整体动态模块模型。在Matlab/Simulink环境下对采用PID反馈控制建立的模型进行了仿真，验证了所提出的AFS系统模型。

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The analysis and modeling of active front steering system

Active front steering (AFS) system has been the trend of steering technology in recent years by improving the steering comfort and active safety. In this paper, a new layout AFS system combining column mounted AFS actuator with pinion-type electrical power steering (EPS) system is proposed and its dynamic characteristics are analyzed. Three typical variable gear ratio (VGR) actuators are discussed in detail, including a new VGR actuator proposed. Then, the mathematic dynamics formulas of all main parts of the AFS steering system are induced. With Laplace transform, the block diagram model of each part is introduced. The whole dynamic block model of AFS system is built by combining each part's block systematically. Simulation of the model developed by using PID feedback control is conducted in the environment of Matlab/Simulink to verify the proposed AFS system model.

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2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering

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