Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 12, Issue 1, Pages 3-24Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546306059853
Keywords
magnetorheological damper; semi-active control; suspension system; averaging method
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Three semi-active control methods are investigated for use in a Suspension system using a commercial magnetorheological damper. The three control methods are the limited relative displacement method, the modified skyhook method, and the modified Rakheja-Sankar method. The method of averaging has been adopted to provide an analytical platform for analyzing the performance of the different control methods. The analytical results are verified using numerical simulation, and further are used to assess the efficiency of different control methods. An experimental test bed has been developed to examine the three control methods under sinusoidal and random excitations. Both analytical and experimental results confirm that the Rakheja-Sankar control and modified skyhook control methods significantly reduce the root-mean-square response of both the acceleration and relative displacement of the sprung mass, while the limited relative displacement controller can only control the relative displacement of the suspension system.
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