东南大学学报（自然科学版）2012，Vol.42Issue(5)：886-891,6.DOI:10.3969/j.issn.1001-0505.2012.05.017
基于干扰观测器的卫星姿态误差四元数模糊滑模控制
Error quaternion fuzzy sliding mode control of attitude for spacecraft based on disturbance observer
摘要
Abstract
Aiming at the attitude control problem of rigid body spacecrafts, the method of error quaternion fuzzy sliding mode control based on disturbance observer is proposed. Firstly, the dynamics equation and the kinematics equation described by error quaternion and error angular velocity are studied, which avoid the non-single question of the end attitude of spacecrafts. Secondly, according to the mathematical model of the satellite attitude system, the sliding mode controller is designed by the Lyapunov approach, and the disturbance observer is used as the compensator to estimate external disturbances. In order to eliminate the intrinsic chattering of the sliding mode control, a fuzzy sliding mode controller with disturbance observer is designed to achieve the attitude control. The simulation results of the spacecraft attitude control show that the proposed control scheme can effectively achieve the spacecraft attitude control when disturbances exist. Besides, it can eliminate the chattering of traditional sliding mode control and keep good robustness.关键词
误差四元数/干扰观测器/模糊滑模控制/姿态控制Key words
error quaternion/disturbance observer/fuzzy sliding mode control/attitude control分类
信息技术与安全科学引用本文复制引用
穆朝絮,孙长银,钱承山..基于干扰观测器的卫星姿态误差四元数模糊滑模控制[J].东南大学学报（自然科学版）,2012,42(5):886-891,6.基金项目
国家杰出青年科学基金资助项目(61125306)、国家自然科学基金重大研究计划资助项目(91016004)、江苏省研究生科技创新资助项目(CXLX-0119)、东南大学优秀博士论文基金资助项目. （61125306）
