Optics and Precision Engineering, Volume. 24, Issue 9, 2200(2016)
Six DOF platform applied in ground test of optical remote sensor alleviation margin in satellite micro-vibration environment
As the micro-vibration of a satellite platform restricts the imaging quality of a high-resolution space optical remote sensor, this paper designs a six DOF(Degree of Freedom) platform for the ground test of optical remote sensor alleviation margin in satellite micro-vibration environment. The kinematics and dynamics models of the platform were constructed, and the transfer function, Simulink model of a voice coil actuators were derived. Based on the models, the platform with six DOFs was manufactured. A confirmatory experiment on the vibration acceleration control accuracy of the platform was carried out, in which the micro-vibration frequency of the typical satellite was taken as the input signal. The results show that the relative error of output acceleration has been controlled in 7% in frequencies from 7 Hz to 40 Hz. The platform takes the parallel construct of the stewart model, it has advantages in simpler structure, bigger stiffness and a controllable vibration source, and obtained results meet the requirements of the ground test applications.
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GU Ying-ying, HUO Qi, LI Ang, LI Da-wei, XU Zhen-bang, LI Yi, WU Qing-wen. Six DOF platform applied in ground test of optical remote sensor alleviation margin in satellite micro-vibration environment[J]. Optics and Precision Engineering, 2016, 24(9): 2200
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Received: Dec. 11, 2015
Accepted: --
Published Online: Nov. 14, 2016
The Author Email: Ying-ying GU (18686681605@163.com)