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针对太阳帆航天器的薄膜帆面和大尺度杆的柔性特征,建立了太阳帆航天器非线性刚柔耦合动力学模型.在满足一定假设条件时,该模型可以转化为多胞线性参数变化(LPV)系统.针对该多胞LPV系统设计了一种状态反馈控制律,通过求解带线性参数不等式约束的凸优化问题,得到了控制器参数的解.仿真结果表明,所提的控制算法既实现了太阳帆目标姿态角的渐近跟踪,又实现了柔性结构的振动抑制.
Aiming at the flexible characteristics of solar sail spacecraft thin film sail and large-scale rod, a nonlinear rigid-flexible coupled dynamic model of solar sail spacecraft is established. When certain assumptions are satisfied, the model can be transformed into multiple linear parameter changes LPV) system is proposed. A state feedback control law is designed for this multi-cell LPV system. By solving the convex optimization problem with linear parameter inequality constraints, the controller parameters are obtained. The simulation results show that the proposed control algorithm Asymptotic tracking of the solar sail target attitude angle, but also to achieve a flexible structure of the vibration suppression.