All real-time control applications require fast response time.In order to make a magnetorheological (MR) damper meet the requirements of real-time control, dynamic response time study becomes particularly important.Here, a new type dual-channel MR damper was taken as the study object, various links affecting the response time of the damper were studied.The simulation results were combined with theoretical analysis to establish the damper’s electromagnetic response model, and the finite difference method was used to establish the mathematic model for rheological effect process of a MR fluid, obtain the change process of flow field and damping force in the channel from power outage to power on, and further achieve the dynamic response time of the damper.The actual response time of the damper was obtained with tests and compared with the theoretical calculation results to verify the creditability of the proposed calculation method.
Key words
magnetorheological (MR) damper /
response time /
finite difference method /
test
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