| 基于频率加权左互质分解的汽车悬架H∞控制器降阶研究 |
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| 引用本文： | 汪洪波,方敏,陈无畏.基于频率加权左互质分解的汽车悬架H∞控制器降阶研究[J].汽车工程,2006,28(9):812-816,853. |
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| 作者姓名： | 汪洪波 方敏 陈无畏 |
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| 作者单位： | 1. 合肥工业大学电气与自动化工程学院,合肥,230009
2. 合肥工业大学机械与汽车工程学院,合肥,230009 |
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| 基金项目： | 国家自然科学基金项目(50275045、50575064)，国家自然科学基金国际合作项目(50411130486)资助 |
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| 摘 要： | 建立了7自由度汽车整车悬架模型,考虑人体对垂直和旋转方向振动的敏感频率范围,设计频率加权的H∞控制器。进而在选取特定加权矩阵保证降阶闭环系统稳定前提下,应用基于频率加权左互质分解的控制器降阶方法,对所设计的高阶H∞控制器进行降阶。仿真结果表明,控制器的阶数能够被较大程度地降低,而闭环控制效果损失很小,证明了频率加权左互质分解控制器降阶方法的有效性。
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| 关 键 词： | 主动悬架 H∞控制 控制器降阶 互质分解 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-222005-10-28 |
A Study on H∞ Controller Order Reduction for Vehicle Suspension System Based on Frequency-weighted Left Coprime Factorization |
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| Wang Hongbo,Fang Min,Chen Wuwei.A Study on H∞ Controller Order Reduction for Vehicle Suspension System Based on Frequency-weighted Left Coprime Factorization[J].Automotive Engineering,2006,28(9):812-816,853. |
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| Authors: | Wang Hongbo Fang Min Chen Wuwei |
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| Institution: | 1. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009; 2. School of Mechanical and Automobile Engineering, Hefei University of Technology,Hefei 230009 |
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| Abstract: | A 7-DOFs state-space model for vehicle suspension system is built.In view of the frequency ranges of human's sensitivity to vibration in different directions,a frequency-weighted controller is designed.Then under the precondition of choosing specific weighted matrix to ensure the stability of lower-order closed-loop system,and by applying the controller order reduction technique based on frequency-weighted left coprime factorization(FWLCF),the order of designed controller is reduced,and corresponding simulations are carried out.The simulation results show that the controller order is considerably reduced with reasonable closed-loop control effects,showing the effectiveness of FWLCF-based controller order reduction technique. |
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