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MRF阻尼器结构简单、体积小、能耗低、反应迅速且阻尼力可调范围广, 已经成为新型履带车辆半主动悬挂系统优先选择的方案。基于磁流变液体本构关系的Bingham模型,对影响车用磁流变减振器的阻尼力的各种因素进行了综合分析。对自行研制的双出杆剪切阀式磁流变减振器进行了实验研究,获得了不同振幅、频率、电流强度下的阻尼力变化曲线,从不同的侧面获得了MRF阻尼器的动力性能。结合Hrovat限界最优半主动控制算法和车辆悬挂系统振动的半主动控制策略,仿真分析了磁流变阻尼器对整车振动的控制效果,并与LQR控制结果作了比较。
MRF damper has the advantages of simple structure, small size, low energy consumption, rapid response and wide range of damping force. It has become the preferred solution of the semi-active suspension system of the new tracked vehicle. Bingham model based on the constitutive relationship of magnetorheological fluid is used to analyze the various factors affecting the damping force of the magnetorheological fluid damper. The self-developed double-rod shear valve MR damper was studied experimentally, and the curves of the damping force under different amplitudes, frequencies and current intensities were obtained. The dynamic performance of the MRF damper was obtained from different sides . Combined with Hrovat optimal semi-active control algorithm and semi-active control strategy of vehicle suspension system vibration, the control effect of MR damper on vehicle vibration is simulated and compared with that of LQR control.