空间控制技术与应用2025，Vol.51Issue(6)：29-40,12.DOI:10.3969/j.issn.1674-1579.2025.06.003
带转台的主动指向超静平台航天器高精度鲁棒跟踪控制
High-Precision Robust Tracking Control for Turntable-Equipped Spacecraft with Active Pointing Ultra-Quiet Platform
摘要
Abstract
To meet space mission requirements for ultra-high agility,stability and precision control(ASPC)of spacecraft payload pointing,this paper studies control of a spacecraft with two-axis turntable and active pointing ultra-quiet platform.First,we established a dynamics model for such a spacecraft using quasi-Lagrangian equations.We also formulated disturbance models for additional cable layouts and friction.Then,we designed a fixed-structure robust H∞ controller for the active pointing platform.For the turntable and satellite platform,we developed nonlinear disturbance observers(NDOs).Finally,we analyzed performance of the algorithms in frequency domain and time domain.Results demonstrate effective suppression of disturbances from cables,friction,and model uncertainties.This achieved significant tracking accuracy improvements for payload and turntable.关键词
超精超稳超敏捷控制/拟拉格朗日方程/鲁棒H∞控制/非线性扰动观测器Key words
ASPC/Quasi-Lagrangian equations/Robust H∞ controll/NDOs分类
航空航天引用本文复制引用
CHEN Zhi,TANG Liang,GUAN Xin,HAN Mingren..带转台的主动指向超静平台航天器高精度鲁棒跟踪控制[J].空间控制技术与应用,2025,51(6):29-40,12.基金项目
国家自然科学基金-联合基金项目(U21B6001) Joint Fund Project of the National Natural Science Foundation of China,(U21B6001) （U21B6001）
