With fast response time and adjustable damping properties, magnetorheological (MR) dampers have shown their
capabilities in reducing vibration of structures when subjected to impact loadings. In order to achieve the best
performance of MR dampers for vibration control, a suitable semi-active control method is desired. Understanding and
modeling of the dynamic behavior of MR dampers is crucial in development of control strategies. This paper presents
both theoretical and experimental studies on modeling MR dampers under impact loadings. An improved polynomial
model with simple form, which is easy to be solved inversely and suitable for implement in real time control, is
proposed. A group of experimental tests are performed to evaluate the accuracy of the proposed model. The results
show that the proposed model can well describe the relationship of damper velocity and its output force during buffering
motion.
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