| Adaptive Controller for Vehicle Active Suspension Generated Through LMS Filter Algorithms |
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| 作者姓名： | 孙建民 舒歌群 |
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| 作者单位： | School of Mechanical Engineering Tianjin University Tianjin 300072，China，Department of Mechanical and Electrical Engineering，Beijing Institute of Civil Engineering and Architecture，Beijing 100044，China，School of Mechanical Engineering Tianjin University，Tianjin 300072，China |
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| 摘 要： | The least means squares (LMS) adaptive filter algorithm was used in active suspension system. By adjusting the weight of adaptive filter, the minimum quadratic performance index was obtained. For two-degree-of-freedom vehicle suspension model, LMS adaptive controller was designed. The acceleration of the sprung mass,the dynamic tyre load between wheels and road,and the dynamic deflection between sprung mass and unsprung mass were determined as the evaluation targets of suspension performance. For LMS adaptive control suspension, compared with passive suspension, acceleration power spectral density of sprung mass acceleration under the road input model decreased 8-10 times in high frequency resonance band or low frequency resonance band. The simulation results show that LMS adaptive control is simple and remarkably effective. It further proves that the active control suspension system can improve both the riding comfort and handling safety in various operation conditions, and the method is fit for the active control of the suspension system.
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| 关 键 词： | 自适应控制器 LMS 滤波算法 乘坐舒适性 操作安全 车辆 |
| 收稿时间： | 2005-12-05 |
Adaptive Controller for Vehicle Active Suspension Generated Through LMS Filter Algorithms |
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| SUN Jianmin,SHU Gequn.Adaptive Controller for Vehicle Active Suspension Generated Through LMS Filter Algorithms[J].Transactions of Tianjin University,2006,12(3):163-168. |
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| Authors: | SUN Jianmin SHU Gequn |
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| Abstract: | The least means squares (LMS) adaptive filter algorithm was used in active suspension system. By adjusting the weight of adaptive filter, the minimum quadratic performance index was obtained. For two-degree-of-freedom vehicle suspension model, LMS adaptive controller was designed. The acceleration of the sprung mass,the dynamic tyre load between wheels and road,and the dynamic deflection between sprung mass and unsprung mass were determined as the evaluation targets of suspension performance. For LMS adaptive control suspension, compared with passive suspension, acceleration power spectral density of sprung mass acceleration under the road input model decreased 8-10 times in high frequency resonance band or low frequency resonance band. The simulation results show that LMS adaptive control is simple and remarkably effective. It further proves that the active control suspension system can improve both the riding comfort and handling safety in various operation conditions, and the method is fit for the active control of the suspension system. |
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| Keywords: | adaptive controller LMS filter algorithms riding comfort handling safety |
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