汽车半主动磁流变悬架的自适应双模糊控制方法

杨建伟;李敏;孙守光

振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 46-51.

PDF(1759 KB)
PDF(1759 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 46-51.
论文

汽车半主动磁流变悬架的自适应双模糊控制方法

  • 杨建伟1,3; 李敏2 ; 孙守光3
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ADAPTIVE DUAL FUZZY CONTROL METHOD FOR AUTOMOTIVE SEMI-ACTIVE SUSPENSION WITH MAGNETORHEOLOGICAL DAMPER

  • Yang Jianwei1,3; Li Min2; Sun Shouguang3
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摘要

为了减小汽车俯仰角、提高汽车平顺性,以磁流变减振器为控制对象,提出了自适应双模糊控制的半主动悬架系统。在实验室实际测试基础上,建立了磁流变减振器阻尼力的非线性Bingham模型和基于该磁流变减振器的半车四自由度汽车半主动悬架数学模型。分别以车身质心速度、俯仰角速度及其偏差变化率作为模糊控制器输入,设计了自适应双模糊控制器,实现了车辆半主动悬架的自适应模糊控制。利用MATLAB软件的SIMULINK工具箱对其进行仿真,获得车身加速度、悬架动行程及车轮动载荷的时域响应特性,并对仿真结果进行了对比分析。结果表明,自适应模糊控制下半主动悬架系统的隔振效果要远好于最优被动系统,而且对路面破坏小,并对运行工况有一定的适应性。

Abstract

A dynamic model and differential equation of asymmetric dual-discs overhanging rotor system were established,taking into account the casing elasticity, rotary dynamic excitation of bearings, elastic connection between casing and stator, and gyroscopic effect. Based on the theory of stability, the system stability and the stability regions were studied by unvestigating theproperties of the jacibu matrix. The effects of different parameters on stability regions of the system were discussed. The step response curves and zero-pole map were utilized for identification of system stability quickly and directly. The results show that rotary dynamic excitation of bearing and rub-impact go against stable operation of the system; The influences of stiffness of the two bearings on stability are basically the same. The influence of the excitation of the two bearings and the rub-impact of the two discs on stability is different obviously. The smaller the elastic connection stiffness between casing and casing is, and the bigger the elastic connection stiffness between casing and stator is, the better the system stability is. When the stiffness is bigger than the critical bearings stiffness, there appearstability regions in the system; otherwise, there are no such regions.

关键词

汽车悬架 / 磁流变减振器 / 自适应模糊控制 / 试验研究 / 数值仿真

Key words

rotor system with elastic casing / bearing rotary excitation / gyroscopic moment / stability

引用本文

导出引用
杨建伟;李敏;孙守光 . 汽车半主动磁流变悬架的自适应双模糊控制方法[J]. 振动与冲击, 2010, 29(8): 46-51
Yang Jianwei;Li Min;Sun Shouguang. ADAPTIVE DUAL FUZZY CONTROL METHOD FOR AUTOMOTIVE SEMI-ACTIVE SUSPENSION WITH MAGNETORHEOLOGICAL DAMPER[J]. Journal of Vibration and Shock, 2010, 29(8): 46-51

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