A Fuzzy Sliding Mode Controller of Real Vehicle Semi-Active Suspensions (Comparison with Output Feedback Sliding Mode Control)

Liu, Huan; Nonami, Kenzo; Hagiwara, Takahide

doi:10.1299/kikaic.72.2352

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2012

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“…Various control theories have been attempted to apply to semi-active suspension systems (1)- (7) . One of those theories is the sliding mode control theory (1), (2) , whose high-frequency switching of a relay input enforces the plant into sliding modes. The plant in sliding modes is well-known for the high robustness against modeling errors and disturbances, and is well-known for the simplicity of the controller, which can be designed if the upper bound of modeling error is known.…”

Section: Introductionmentioning

confidence: 99%

A Sliding Mode Control of Semi-Active Suspension Systems with Describing Function Method

Toyama

Ikeda

2012

JSDD

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This paper presents a sliding mode controller of semi-active suspension systems. The sliding mode controller is designed by the describing function method so that a switching function is enforced into a desired limit cycle instead of a perfect sliding mode. Although the proposed sliding mode controller cannot generate the limit cycle as desired because of the passive constraint of controllable dampers, restricting the switching function in the vicinity of the origin can suppress the deterioration due to the passive constraint, such as increase of jerk of the sprung mass. Finally, simulation results show the effectiveness of the proposed controller.

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Section: Introductionmentioning

confidence: 99%