八作动器隔振平台的通道耦合分析及解耦控制  

Decoupling Analysis and Decoupling Control of Vibration Isolation Platform with Eight Actuators

作　　者：王晓雷[1] 杨庆俊[1] 郑钢铁[1] 

机构地区：[1]哈尔滨工业大学航天工程系,哈尔滨150001

出　　处：《宇航学报》2007年第4期1007-1011,共5页Journal of Astronautics

基　　金：国防科工委十五民用航天预研项目资助

摘　　要：分析一种对称结构的八作动器隔振平台的通道耦合特性。分析表明由于结构对称,当有效载荷质心位于平台纵轴的延长线上,且有效载荷的惯性主轴与平台对称轴平行时,平台可分解成两个独立的单自由度系统和两个2阶耦合子系统。利用矩阵同时对角化方法对平台的2阶耦合子系统进一步解耦,仿真结果显示解耦控制能够衰减被动隔振的谐振峰,改进平台的隔振性能。In this paper, the dynamic behavior of a symmetric vibration isolation platform with eight actuators is analyzed. This platform displays a much simple dynamic behavior when the payload＇ s principal axes of inertia parallel with the platform＇s axes of symmetry and the payload＇ s center of mass is at the extension line of the platform＇ s central axis. Dynamics of the platform can be decomposed into two independent single-input single-output channels and two two-input two-output subsystems. Then the two-input two-output subsystems are decoupled further by simultaneous diagonalization. Resalts of simulation show that decoupling control can achieve an obvious improvement on the vibration attenuation and has a satisfied performance.

关 键 词：解耦控制 隔振平台 八作动器 

分 类 号：TB535[理学—物理] TP273[理学—声学]