主动磁控小卫星模糊控制算法研究  

Fuzzy control algorithm for active magnetic control small satellite

作　　者：孙兆伟[1] 曹喜滨[1] 

机构地区：[1]哈尔滨工业大学卫星工程技术研究所,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2002年第6期848-852,857,共6页Journal of Harbin Institute of Technology

基　　金：高等学校骨干教师资助计划资助项目(2001).

摘　　要：为了缩短小卫星姿态捕获的时间及提高控制精度,针对卫星入轨后的主动磁阻尼与磁捕获控制,结合磁控力矩约束条件,提出了一种模糊控制算法,针对各轴向的磁偶极子进行了控制器设计.分析结果表明,该算法在输入反馈信号数值较小时,可以显著地改善系统的灵敏度和动态特性.计算机仿真结果表明,该算法鲁棒性好,控制精度高,捕获时间相对较短.Because of the coupling of dynamics and control, the active magnetic control system of small satellite is a nonlinear system with restrictive conditions. How to damp and capture the satellite promptly with finite magnetic torque is an important problem. Only effective control algorithm can increase the control efficiency and shorten the capture course. In this paper, considering the restrictive conditions of the magnetic control torques, a fuzzy control algorithm is put forward. The algorithm aimed at the magnetic dipoles along with the body-axes to design the controller. The analysis indicate that the fuzzy algorithm can improve the system sensitivity and dynamic characteristic while the input values is smaller. The simulation results indicate that the control algorithm has the excellent robustness, higher control precision and shorter capture time.

关 键 词：算法 小卫星 姿态控制 主动磁控 模糊控制 控制精度 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计] V474