光学精密工程2023，Vol.31Issue(23)：3438-3448,11.DOI:10.37188/OPE.20233123.3438
基于复合轴控制原理的卫星新型姿态稳定性调控
Pointing stability control method for super stable satellite based on composite axis control
摘要
Abstract
To reduce the residual attitude error of the drag-free satellite,a pointing stability control mecha-nism based on momentum exchange was designed.To realize nanoradian-level pointing stability accuracy for the satellite,a composite axis control method was implemented.This method work in conjunction with the drag-free attitude control loop,simultaneously reducing the consumption of working fluid in other actu-ators.This approach was designed to extend the satellite's operational lifespan.Firstly,the design incor-porated a linear reciprocating mechanism driven by piezoelectric ceramics on the satellite.This setup al-lowed for the derivation and analysis of additional interference torque,which resulted from the movement of small masses.The analysis was grounded in the principles of satellite attitude dynamics.Secondly,the composite axis system's main and auxiliary axes were individually tuned,and the system's bandwidth was calculated to ensure it meets performance requirements.Following this,a feed-forward inverse model and adaptive PID control were employed.These techniques compensated for the nonlinearity of the piezoelec-tric ceramics and any disturbances affecting the satellites.Finally,the feasibility of the overall system was verified by an Adams and Simulink joint simulation.The simulation results show that the intervention of the mechanism can effectively reduce the bandwidth of the control system and realize high-precision point-ing stability control of approximately 10 nrad·Hz-1/2@1 mHz～1 Hz.关键词
无拖曳卫星/复合轴控制/姿态稳定性/压电陶瓷Key words
drag-free satellite/composite axis control/attitude stabilization/piezoelectric ceramics引用本文复制引用
赵子菁,刘彦甫,赵宏超,范磊,闫勇,李资政..基于复合轴控制原理的卫星新型姿态稳定性调控[J].光学精密工程,2023,31(23):3438-3448,11.基金项目
国家重点研发计划资助项目(No.2021YFC2202103) （No.2021YFC2202103）
深圳市科技计划资助项目(No.20220818153519003) （No.20220818153519003）
