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Control performance simulation and tests for Microgravity Active vibration Isolation system onboard the Tianzhou-1 cargo spacecraft

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Astrodynamics 2018年第4期2卷 339-360页

作者： Wei Liu Yongkang Zhang Zongfeng Li Wenbo Dong Key Laboratory of Space Utilization Technology and Engineering Center for Space UtilizationChinese Academy of SciencesBeijing100094China University of Chinese Academy of Sciences Beijing100049China

The Microgravity Active vibration Isolation system(MAIS),which was onboard China’s first cargo-spacecraft Tianzhou-1 launched on April 20,2017,aims to provide high-level microgravity at an order of 10^(-5)–10^(-6)g for specific scientific *** is mainly composed of a stator and a floater,and payloads are mounted on the *** relative motion with respect to the stator fixed on the spacecraft,the floater is isolated from vibration on the stator via control forces and torques generated by electromagnetic *** isolation results in a high-level microgravity *** MAIS was launched into space,its control performance had been simulated on computers and tested by air-bearing platform levitation and aircraft parabolic *** article first presents an overview of the MAIS’s hardware system,particularly system structure,measurement sensors,and control *** system dynamics,state estimation,and control laws are then discussed,followed by the results of computer simulation and engineering tests,including the test of the six-degree-of-freedom motion by aircraft parabolic *** and test results verify the accuracy of the control strategy design,effectiveness of the control algorithms,and performance of the entire control system,paving the way for operation of MAIS in *** article also presents the steps recommended for the control performance simulation and tests of MAIS-like *** devices are expected to be used on China’s Space Station for various scientific experiments that require a high-level microgravity environment.

关键词： Microgravity Active vibration Isolation system system dynamics modelling controller design vibration attenuation performance computer simulation air-bearing platform levitation aircraft parabolic flight

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