First order sensitivity analysis of magnetorheological fluid damper based on the output damping force |
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| Authors: | Kong Xiangdong Li Bin Quan Lingxiao Guo Haixin Bai Ruxia |
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| Affiliation: | 1. College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, P.R.China;Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control,Qinhuangdao 066004,P.R.China;2. College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, P.R.China |
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| Abstract: | With many features, the magnetorheological fluid ( MRF) damper is widely applied in the semi-active vibration control system.And sensitivity analysis is an important method to study the influence weight of various parameters on damping force characteristics.A mathematical model of the output damping force on the MRF damper is established by the mechanism modeling method, a first order output sensitivity equation is deduced and the expression of the first order output sensitivity function is obtained.The first-order sensitivity functions of ten design parameters are solved, and the influ-ence degree of system parameters change on the output force of MRF damper is analyzed by compa-ring the sensitivity index of the parameters.Two sensitivities of vibration velocity and control current are obtained through experiment to prove the other parameters sensitivity analysis conclusion by analogy verification, which provides guidance for the structure optimization design of MRF damper. |
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| Keywords: | magnetorheological fluid ( MRF) damper output damping force first order sensi-tivity analysis sensitivity index |
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