Electromechanical co-simulation analysis for contactless positioning and vibration isolation platform

被引：3
|
作者：
Li J.-L. [1 ]
Wang J.-B. [2 ]
He W. [1 ]
机构：
[1] Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, Zhejiang University, Hangzhou
[2] Shanghai Institute of Satellite Equipment, Shanghai
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2019年 / 53卷 / 01期
关键词：
Co-simulation; Contactless; Micro-vibration; Positioning; Vibration isolation;
D O I：
10.3785/j.issn.1008-973X.2019.01.016
中图分类号：
学科分类号：
摘要：
The electromechanical co-simulation method was used to simulate and analyze the 6-DOF (degrees of freedom) positioning and micro-vibration isolation functions of the platform in order to analyze the working performances of a contactless positioning and vibration isolation platform which works at space microgravity environment. The working principle of the contactless positioning and vibration isolation platform was introduced. The exciting unit, position measuring unit and acceleration measuring unit of the platform were made up by contactless biaxial actuators, biaxial position sensitive detectors and uniaxial accelerometers according to space symmetry layout scheme. The controller of the platform was designed based on position and acceleration feedback. Then the mechanical system simulation model and the closed-loop control system simulation model based on position and acceleration feedback was established by ADAMS and MATLAB/Simulink, respectively, which together set up the electromechanical co-simulation model of the platform. The positioning and vibration isolation performances of the platform were simulated by the co-simulation model. Results show that the 6-DOF displacement and angular displacement control errors of the platform are less than 10 μm and 2×10 -5 rad respectively under small range positioning mode. The suppression efficiencies of the platform for 6-DOF direct sinusoidal disturbances with frequency range of 0.01-1 Hz and 1-100 Hz are 39-73 dB and 19-73 dB, respectively. The relative displacements between the floater and the stator are less than 1 mm during vibration isolation control process under vibration isolation mode. © 2019, Zhejiang University Press. All right reserved.
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页码：146 / 157
页数：11
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