H-infinity and Mixed H2/H-infinity with Pole-Placement Design via ILMI Method for Semi-active Suspension System

2012 Sixth Asia Modelling Symposium Pub Date : 2012-05-29 DOI:10.1109/AMS.2012.23

S. Badran, A. S. Emam

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引用次数: 3

Abstract

This paper aims to use H_∞ and mixed H₂/H_∞ techniques with a semi active suspension system to increase the passenger's ride comfort performance. A two degree of freedom dynamic model of a vehicle semi-active suspension system was presented. The role of H_∞ is used to minimize the disturbance effect on the system output whereas H₂ is used to improve the transients against random disturbances. The capability of the system of improving comfort of operators has been evaluated through simulations carried out with a validated model of the entire vehicle. The results of this study revealed that the use of mixed H₂/H_∞ with pole placement for a semi-active suspension system showed a great improvement compared with H_∞ systems. In addition, the results of the simulation showed that ride comfortable of the vehicle can be improved effectively by using the semi-active suspension with mixed H₂/H_∞ control method, and also the mixed H₂/H_∞ control method more effective than the H_∞ control method. Finally, this paper showed a robust use of both H_∞ and mixed H₂/H_∞ problem which can be solved using linear matrix inequality (LMI) techniques.

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基于ILMI方法的半主动悬架系统h -∞和混合H2/ h -∞配极设计

本文旨在将H∞和混合H2/H∞技术应用于半主动悬架系统，以提高乘客的乘坐舒适性。建立了汽车半主动悬架系统的二自由度动力学模型。H∞的作用是最小化干扰对系统输出的影响，而H2的作用是改善对随机干扰的瞬态。通过整车验证模型的仿真，对该系统提高驾驶员舒适度的能力进行了评估。研究结果表明，与H∞系统相比，使用混合H2/H∞与极点放置的半主动悬架系统具有很大的改进。此外，仿真结果表明，采用混合H2/H∞控制方法的半主动悬架可以有效改善车辆的平顺性，并且混合H2/H∞控制方法比H∞控制方法更有效。最后，本文展示了H∞和混合H2/H∞问题的鲁棒性，这些问题可以用线性矩阵不等式(LMI)技术来解决。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 Sixth Asia Modelling Symposium

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