Title: Fuzzy Control of Vehicle Semi-active Suspension With Magnetorheological Damper Having a Hysteresis Model
Abstract: To obtain the accurate dynamical model of a magnetorheological (MR) damper for convenient control,damping characteristic experiments were conducted on a MR damper subjected to cyclic excitation,and the experimental data were used to fit the hysteresis model could be adopted to characterize the dynamic response of the MR damper. Comparing the damping forces obtained from simulation with this model and experimental testing,the model could not only describe the hysteresis property of the damper force,but also represent the inverse dynamics of the MR damper concisely and easily,so that the desired damping force in open-loop control scheme could be obtained easily. Using this model,a fuzzy controller with an open-loop scheme was designed. A quarter-car suspension model was considered for analysis and simulation so as to compare the proposed fuzzy controller properties with skyhook controller and passive suspension. The proposed control scheme was further validated by numerical simulation under random road surface excitation,and the suspension comprehensive performances were considerably better as compared to the skyhook controller and the passive suspension.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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