| 基于QFT的四轮转向控制系统设计 |
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| 引用本文： | 刘奋,张建武,屈求真,黄宏成.基于QFT的四轮转向控制系统设计[J].汽车工程,2002,24(1):68-72,55. |
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| 作者姓名： | 刘奋 张建武 屈求真 黄宏成 |
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| 作者单位： | 上海交通大学 |
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| 摘 要： | 本文提出一种基于定量反馈理论的主动控制四轮转向策略，以汽车转向时的横摆角速度和车体侧偏角为被控制量，将汽车的速度、质量、轮胎等效侧偏刚度等参数视为有界的不确定参数，应用定量反馈理论（QFT）设计反馈控制系统。为了验证设计的有效性，采用具有非线性轮胎特性的汽车模型对控制系统作了多种工况下的仿真。仿真结果证明所设计的解耦控制系统对汽车参数的不确定性具有鲁棒性，同时具有较好的控制特性，能够有效提高汽车的主动安全性和操纵稳定性。
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| 关 键 词： | 四轮转向 定量反馈 鲁棒性 汽车转向 控制系统 稳定性 设计 |
Design of Active 4WS Control System Based on QFT |
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| Liu Fen,Zhang Jianwu,Qu Qiuzhen & Huang HongchengShanghai Jiaotong University.Design of Active 4WS Control System Based on QFT[J].Automotive Engineering,2002,24(1):68-72,55. |
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| Authors: | Liu Fen Zhang Jianwu Qu Qiuzhen & Huang HongchengShanghai Jiaotong University |
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| Abstract: | This paper proposed an active 4WS control strategy based on quantitative feedback theory (QFT). The steering yaw rate and sideslip angle in cornering are taken as control target,and the vehicle system parameters are treated as the limited uncertain variable. Feedback control system is designed using QFT. Then the paper simulates the control system on varied working conditions using vehicle models with nonlinear tyre. It shows that it has a robust decoupling control system for the uncertainty of vehicle parameters and can improve the safety and handling stability of vehicle effectively. |
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| Keywords: | 4-wheel steering Quantitative feedback theory Robustness |
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