Road-frequency adaptive control for semi-active suspension systems

Le Hoa Nguyen1, Keum-Shik Hong2, Seonghun Park1
1School of Mechanical Engineering, Pusan National University, Busan, Korea
2Department of Cogno-Mechatronics Engineering (The W.C.U. Program, Korea), Pusan National University, Busan, Korea

Tóm tắt

In this paper, a road-frequency adaptive control for semi-active suspension systems is investigated. The control aims to improve the vehicle suspension performance (ride comfort and wheel handling) for all frequency regions of road disturbances. In order to achieve this aim, the control law is extended from the conventional skyhook control, and the controller gains are scheduled for various frequency regions of road disturbances. By using the data measured from a relative displacement sensor, a state estimator based on a Kalman filter for estimating the required state variables is designed. Road disturbance frequencies are estimated by using a first order zero-crossing algorithm. The efficiency of the proposed control is shown through numerical simulations.

Tài liệu tham khảo

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