Semi-active control of air suspension considering pavement preview information and parametric uncertainty

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (23) : 21-29.

ZHANG Zhiyong1,2, WANG Jianbo2, HU Lin1,2, HUANG Caixia3

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Abstract

Aiming at the semi-active control problem of vehicle air suspension with throttle damping hole and additional air chamber, based on the robust control theory, a semi-active control strategy for vehicle 1/2 air suspension considering parametric uncertainty was proposed.The mapping relationship between expected control force and orifice area was established based on the switch control method to realize the damping force’s tracking expected control force.The pavement information of the front axle wheel was taken as the preview information of the rear axle wheel to establish an augmentation system containing pavement preview information.Numerical simulation for the air suspension semi-active control system considering road surface preview information and parametric uncertainty was performed.Results showed that the proposed control strategy can not only improve the ride comfort of the air suspension, but also have stronger robustness to parametric uncertainty.

Key words

air suspension / semi-active control / robust control / parametric uncertainty / wheelbase preview

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ZHANG Zhiyong1,2, WANG Jianbo2, HU Lin1,2, HUANG Caixia3. Semi-active control of air suspension considering pavement preview information and parametric uncertainty[J]. Journal of Vibration and Shock, 2020, 39(23): 21-29

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