【作者】 娄亚男； 张新宇； 董小闵； 张群； 潘忠文； 黄涛； 王振洋；

【Author】 LOU Ya-nan;ZHANG Xin-yu;DONG Xiao-min;ZHANG Qun;PAN Zhong-wen;HUANG Tao;WANG Zhen-yang;Beijing Institute of Astronautical Systems Engineering;College of Mechanical and Vehicle Engineering, Chongqing University;

【机构】 北京宇航系统工程研究所； 重庆大学机械与运载工程学院；

【摘要】 为实现空间精密光学设备等的精密跟瞄,要求安装光学设备的平台具有振动隔离和振动抑制的能力。本文提出了一种针对6-6 SGP(Stewart-Gough Platform, SGP)并联平台的磁流变阻尼器减振方案,设计了并联平台整体控制和单腿控制两种振动控制方案。接着,仿真对比了不同磁流变阻尼情形下平台各方向的位移传递率和振动响应,得到了磁流变阻尼变化对共振区幅值以及隔振效果的影响。基于此,开展所提出振动控制方案的仿真试验。试验结果表明,与不进行振动控制相比,两种控制方案在一阶共振峰、二阶共振峰位置均有较好的振动抑制效果。更多还原

【Abstract】 To achieve precision tracking and pointing of space precision optical equipment, the platform on which the optical equipment is installed is required to have the ability of vibration isolation and vibration suppression. In this paper, a magnetorheological damper vibration reduction scheme for 6-6 SGP(Stewart-Gough Platform, SGP) parallel platform is proposed, and two vibration control schemes are designed, namely, the overall control and single-limb control of the parallel platform. Then, the displacement transmissibility and vibration response of the platform in all directions under different MR damping conditions are simulated and compared, and the influence of MR damping changes on the amplitude of the resonance zone and the vibration isolation effect is obtained. Based on this, the simulation test of the proposed vibration control scheme is carried out. The test results show that the two control schemes have better vibration suppression effect at the frequencies of the first and second resonance peaks than without vibration control.更多还原