基于最优切换的挠性卫星的姿态控制

摘要

The attitude control problem of flexible satellites is discussed under the framework of the optimal control for switched dynamical systems.First,according to the movement model of the flexible satellite attitude adjustment,and considering the cooperation of two actuators control,the attitude control problem is trans-formed into an optimal switching control problem.Then,the complete algorithm is given to solve the above op-timal switching control problem based on the particle swarm optimization and Powell algorithms.Finally,an ex-ample of three-order flexible satellite systems is presented to testify the viability of the proposed approach.%在切换系统最优控制的框架下，讨论了挠性卫星的姿态控制问题。首先，根据挠性卫星姿态调整的运动模型，同时考虑两种执行机构的控制作用，将卫星的姿态控制问题转化为一种切换控制问题，并在能量最小性能指标下讨论其最优控制问题。其次，基于粒子群优化算法和 Powell 算法给出了求解最优切换时间问题的完整优化算法。最后，以3阶挠性卫星系统为例，给出了具体仿真算例，验证了所提算法的有效性。