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Title: Optimal control of a half-car vehicle model with a variable damping semi-active suspension
Authors: Ercan, Yücel
Issue Date: 2007
Publisher: World Scientific Publishing Co. Pte Ltd
Source: 10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2006, 18 June 2006 through 22 June 2006, Lake Tahoe, NV, 91842
Abstract: A half-car vehicle model with variable dampers placed between the sprung mass and the unsprung masses was considered in the study. A suitable set of state variables were defined and state equations of the system were obtained. An integral performance index involving a weighted combination of the average squared heave accelerations of the sprung mass, and squares of suspension deflections was defined. The closed loop optimal control law which gives the optimal value of the damping coefficients of the variable dampers was obtained by using Pontryagin principle. The performance of a vehicle with an optimally controlled semi-active suspension was calculated for measured road profile inputs, and trade-off curves were obtained between the average sprung mass acceleration and suspension deflections. Performance of the vehicle with semi-active system was compared to the corresponding performance of a vehicle with a passive suspension system. Then, a time delay was introduced to the response of the damper and its effect on the performance of the semi-active system was investigated. The results of the study have shown that performance of the vehicle with variable damping semi-active suspension is much better than that of the vehicle with a passive suspension.
ISBN: 9812771190; 9789812771193
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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