On-orbit determination and adjustment of electrostatic accelerometer lever arm |
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| Authors: | Wang Benli Liao He Yang Dahao |
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| Institution: | 1. Research Center of Satellite technology, Harbin Institute of Technology, Harbin 150080, China;2. Beijing Institute of Electronic System Engineering, Beijing 100094, China;1. Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College, London SW7 2AZ, UK;2. United Technologies Research Center Ireland, Cork, Ireland;1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;2. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;1. LAAS-CNRS, University of Toulouse, 31400 Toulouse, France;2. Department of Mathematics, University of Kaiserslautern, 67663 Kaiserslautern, Germany;1. EV41, Control System Design & Analysis Branch, NASA Marshall Space Flight Center, Huntsville, AL 35812, United States;2. EV42, Guidance, Navigation and Mission Analysis Branch, NASA Marshall Space Flight Center, Huntsville, AL 35812, United States |
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| Abstract: | In order to ensure the proof mass center of electrostatic accelerometer (EA) is fixed at the center of gravity of satellite as precisely as possible, an on-orbit determination and adjustment strategy of EA lever arm is presented in this paper. The EA lever arm is determined using the observations of EA, gyro and magnetometer first. Then it is adjusted by screw slider mechanism. The simulation results demonstrate that the proposed strategy can be carried out several times to yield better accuracy. Meanwhile, the optimal geographic location for EA lever arm determination along each axis is found. |
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