摘要
针对航天器姿态机动的控制问题,设计了一种滑模变结构控制器,实现了航天器姿态对时变期望的跟踪。给出航天器姿态的数学描述,采用滑模控制思想设计了控制器,并基于Lyapunov稳定性理论给出控制器的稳定性证明。以推力器为姿态机动的执行机构,给出了控制信号的PWM调制方法。最后在Simulink环境下构建了仿真系统,仿真结果表明在该控制器下,航天器姿态可以实现对期望信号的跟踪。
For problem of attitude maneuver control for spacecraft, design a sliding mode variable structure controller, realize the attitude tracking of time-varying expected value. A mathematics description of spacecraft attitude is given, use sliding mode method to design the controller and prove the stability based on Lyapunov stability theory. Take thruster as the attitude maneuver actuator, and PWM modulation method of signal is given. Finally, build a simulation system in Simulink, and the simulation results show the effectiveness of the proposed controller.
出处
《科学技术与工程》
北大核心
2014年第13期296-299,共4页
Science Technology and Engineering
基金
国家高技术研究发展计划项目(2012AA0621)资助
关键词
航天器姿态
滑模变结构
推力器
spacecraft attitudesliding mode variable structure thruster
