以单自由度非线性磁流变阻尼器系统为研究对象,通过变换磁流变阻尼器的外加电压,对系统实施半主动开-关控制.在分析系统运动特征基础上,给出系统的运动微分方程,利用平均法进行分析求解.根据奇异性理论得到系统基的普适开折以及特例情况下的转迁集.并将磁流变阻尼器应用到转向架横向动力系统的振动控制中,分析了系统参数对幅-频特征曲线以及稳定性的影响.%Nonlinear single degree of freedom magnetorheological damper system was studied. The system can implement the semi-active on-off control strategy through changing the voltage input on MR damper. Based on analyzing the dynamic features of the system, its differential equation was presented and solved by using the averaging method. According to the singularity theory, the universal unfolding of system and the transition set under a special circumstances were obtained. Then the magnetorheological damper was applied in the dynamic system of lateral bogie as a vibration controller. The effects of system parameters on the amplitude-frequency property and stability were analyzed in detail.
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