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针对空间飞行器常带有大型挠性附件,而挠性附件的振动往往使控制系统性能变差的问题,提出了一种能有效抑制系统残留振动的姿态机动控制策略,即机动控制内环结合前置补偿结构.控制内环为由姿态控制执行机构(PWPF modulator)、控制器(PD controller)构成的挠性卫星姿态闭环系统,前置补偿器采用多模态输入成型器.内环用于保证主刚体的期望转动,输入成型器则用于抑制系统的残留振动.仿真结果表明:在卫星姿态满足期望指向的前提下,基于Pade′拟合设计的多模态成型器更短,对于系统的参数摄动也具有一定的鲁棒性.该控制策略改善了姿态机动控制系统的过渡过程.
Aiming at the problem that the spacecraft usually has a large flexible attachment and the vibration of the flexible attachment often makes the performance of the control system worse, a posture control strategy that can effectively restrain the residual vibration of the system is proposed. That is, The compensation inner ring is a flexible satellite attitude closed-loop system composed of a PWPF modulator and a PD controller, and the front compensator adopts a multi-mode input shaping device. The inner ring is used to ensure The main body of the expected rotation, the input device is used to suppress the residual vibration of the system.The simulation results show that: in the satellite attitude to meet the desired direction under the premise of Pade ’fitting based on the design of the multi-mode shaper is shorter, for the system The parameter perturbation also has a certain robustness.The control strategy improves the transition process of attitude maneuvering control system.