基于加速度各向同性的空间光学仪器主动隔振Stewart平台设计

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (2) : 109-114.

论文

基于加速度各向同性的空间光学仪器主动隔振Stewart平台设计

佟志忠1；段广仁2；何景峰1；姜洪洲1

作者信息 +

Optimal design of acceleration isotropy based active vibration isolation stewart platform for spaceborne optical Instrument

TONG Zhi-zhong1；DUAN Guan-ren2; HE Jing-feng1；JIANG Hong-zhou1

Author information +

文章历史 +

摘要

为保证高精度空间光学仪器的仪器精度，采用主动隔振Stewart平台作为多维振动隔离系统。基于加速度各向同性定义，考虑负载的质量几何特性，推导了加速度各向同性的解析数学表达式，揭示了各向同性、机构结构以及负载特性之间的联系，给出了柔顺中心的数学表达式以及各向同性Stewart平台的特征不变量。为降低系统非线性及耦合影响，提出以运动正交、加速度各向同性为指标的主动隔振Stewart平台设计，建立了生成一类加速度各向同性隔振Stewart平台的设计方法

Abstract

To ensure high precision spaceborne optical instruments with natural precision, Stewart platforms was adopted as multi-dimension active vibration isolation system. Considering the mass geometry characteristics of the payload, analytical formulations of acceleration isotropy was derived based on the concept of acceleration isotropy. It discovers the relations between isotropy, architecture and characteristics of the payload. The formulation of compliant center was also deduced analytically. An invariable measure of any isotropy Stewart platform was given. The optimal design using motion orthogonality and acceleration isotropy was proposed to decrease the nonlinear and coupled affections, and a routine was established to generate a class of active vibration isolation Stewart platforms with acceleration isotropy.

导出引用

佟志忠;段广仁;何景峰;姜洪洲. 基于加速度各向同性的空间光学仪器主动隔振Stewart平台设计[J]. 振动与冲击, 2012, 31(2): 109-114

TONG Zhi-zhong;DUAN Guan-ren; HE Jing-feng;JIANG Hong-zhou. Optimal design of acceleration isotropy based active vibration isolation stewart platform for spaceborne optical Instrument[J]. Journal of Vibration and Shock, 2012, 31(2): 109-114