Abstract
Control moment gyroscope (CMG) is an ideal device for satellite attitude transformation, which inevitably has micro-vibration in that process, and it will seriously affect the high precision imaging of the satellite. To restrain the interference with micro-vibration caused by CMG, a magnetorheological (MR) damper and its control method are designed in this study. Besides, the structure, the dynamic model, and the fuzzy PID algorithm of the MR damper are proposed. The magnetic circuit structure is designed according to the requirements of MR dampers for magnetic field, the finite element analysis of magnetic force line and magnetic induction intensity is completed in Maxwell, and the simulation shows that the designed magnetic circuit meets the requirements. The simulation test is carried out by Simulink under the stimulation of vibration source. The vibration suppression effect of the MR damper is tested on the vibration test platform, from which we know the designed MR damper can effectively control the micro-vibration suppression.
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