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| Constrained H∞ control method for active suspensions of vehicles |
| Received:August 25, 2008 |
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| DOI：10.7511/jslx20102004 |
| KeyWord:active suspensions time-domain hard constraints H∞ control output feedback linear matrix inequalities |
| Author | Institution |
| 宋刚 |
大连理工大学 运载工程与力学学部 工业装备结构分析国家重点实验室,大连 ;重庆交通科研设计院 结构动力工程所 桥梁工程结构动力学国家重点实验室,重庆 |
| 吴志刚 |
大连理工大学 运载工程与力学学部 工业装备结构分析国家重点实验室,大连 |
| 林家浩 |
大连理工大学 运载工程与力学学部 工业装备结构分析国家重点实验室,大连 |
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| Abstract: |
| The problem of H∞ output feedback control for linear time-discrete systems with time-domain hard constraints is considered. With the assumption of disturbance energy being bounded, a constrained H∞ output feedback control strategy is proposed based on linear matrix inequality technology and sufficient conditions for the existence of such a controller are derived. The proposed constrained H∞ control scheme is applied to active suspensions. Simulation results for a quarter car model show that whether the variations of the vehicle model parameters exist or not, the constrained H∞ controller can achieve a promising improvement on ride comfort, while keeping suspension strokes, dynamic tire loads and control forces within given bounds. |
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