Earth-observation satellite attitude control using passive and active hybrid magnetically suspended flywheels  

作　　者：杨照华 杨宁宁 余远金 

机构地区：[1]School of Instrument Science and Opto-electronics Engineering,Beihang University

出　　处：《Journal of Beijing Institute of Technology》2014年第2期226-234,共9页北京理工大学学报（英文版）

摘　　要：The control strategy is presented using passive and active hybrid magnetically suspended flywheels（P＆A MSFWs）,which can help meet the requirements of high precision and high stability for earth-observation satellites.Compared with the conventional flywheel,P＆A MSFW has more rotation degrees of freedom（DOFs）since the rotor is suspended by magnetic bearings,and thus requires more efficient controllers.A modified sliding mode control law（SMC）to our novel nonlinear and coupled system is presented,which is interrupted by inertia matrix uncertainties and external disturbances.SMC law via Lyapunov method is improved,and a fuzzy control scheme is used to attenuate the chatting and control attitude accuracy and maintain the robustness of SMC.Simulation results are provided to illustrate the efficiency of our model by using our control law.The control strategy is presented using passive and active hybrid magnetically suspended flywheels（P＆A MSFWs）,which can help meet the requirements of high precision and high stability for earth-observation satellites.Compared with the conventional flywheel,P＆A MSFW has more rotation degrees of freedom（DOFs）since the rotor is suspended by magnetic bearings,and thus requires more efficient controllers.A modified sliding mode control law（SMC）to our novel nonlinear and coupled system is presented,which is interrupted by inertia matrix uncertainties and external disturbances.SMC law via Lyapunov method is improved,and a fuzzy control scheme is used to attenuate the chatting and control attitude accuracy and maintain the robustness of SMC.Simulation results are provided to illustrate the efficiency of our model by using our control law.

关 键 词：attitude control passive and active hybrid magnetically suspended flywheels（P＆A MSFWs） modeling and analyzing sliding mode control（SMC） fuzzy control 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]