调节方向盘转速的电动助力转向系统回正控制

莫旭辉; 罗照湘; 杨辉; 刘德宝; 朱圆圆

doi:10.13433/j.cnki.1003-8728.2017.0605

调节方向盘转速的电动助力转向系统回正控制

doi: 10.13433/j.cnki.1003-8728.2017.0605

1.
湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082;
2.
重庆科鑫三佳车辆技术有限公司, 重庆 401123

详细信息

作者简介:
莫旭辉(1977-),讲师,博士,研究方向为整车动力学分析与优化,汽车结构设计与优化,moxuh@163.com

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- 文章访问数: 162
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- 被引次数: 0
出版历程
- 收稿日期: 2015-12-11
- 刊出日期: 2017-06-05

A Return-to-central Control Strategy for Electric Power Steering System by Controlling the Angular Velocity of Steering Wheel

1.
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;
2.
Chongqing Co-Sunjoy Vehicle Technology Co., Ltd, Chongqing 401123, China

摘要

摘要: 针对已有电动助力转向（EPS）系统高速回正超调，低速回正不足的问题，提出了基于控制方向盘转速的回正控制策略。建立了齿条式电动助力转向系统动力学模型；阐述了回正特性曲线的获取方法；通过Adams/Simulink对控制策略进行了仿真试验。在控制策略方面跳出了以往的基于方向盘转角的模糊PID控制的局限，仿真分析表明基于方向盘转速控制的回正控制策略实现了理想的回正效果，较已有的回正控制不存在回正不足或超调现象，且回正过程无方向盘震荡现象，达到了迅速、准确的回正效果。
- 电动转向助力系统 /
- 回正控制策略 /
- 转速控制 /
- 联合仿真
Abstract: Because the return ability of the electric power steering (EPS) system of a steering wheel is excessive at its high speed but insufficient at its low speed, a new return-to-center control strategy for controlling its speed was put forward. Firstly, the dynamics model of the R-EPS system was built. Then the method for obtaining return curves was introduced. Finally, the control strategy was simulated with Adams/Simulink. Compared with the fuzzy PID control strategy based on the conventional angle of the steering wheel, our control strategy based on the angular velocity of the steering wheel is innovative. The simulation results show that our control strategy gains a better return ability than the conventional control strategy and that the return is faster and more accurate.
- electric power steering system /
- dynamics model /
- angular velocity /
- fuzzy PID control

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参考文献(15)

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