Abstract
This paper is concerned with the design of an active suspension system for one-wheel car models using the sliding mode control. The active control is derived as a sum of the LQ control and the nonlinear switching control where the LQ control is obtained by taking the acceleration of the car body seriously in the performance index. The active control force is obtained by using a pneumatic actuator, and the road profile is estimated by using the proposed simplified VSS observer. The experimental result indicates that the proposed active suspension system is more effective in the vibration isolation of the car body than the active suspension systems based on the LQ control and the skyhook damper control.
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