摘要
主要研究了挠性太阳帆板的闭环驱动控制问题.利用挠性结构的模态恒等式,获得了广义状态空间形式的挠性太阳帆板驱动动力学方程.基于Lyapunov方法,设计了基于输出反馈的PD控制器,并根据广义系统理论讨论了闭环系统的正则性和无脉冲性,以确保控制系统是允许的.数值仿真验证了闭环控制算法的有效性并与开环控制进行了比对.最后进行了总结并提出新的研究问题.
This paper is mainly concerned with the closed-loop drive control of flexible solar arrays.Based on a modal identity of the flexible structure,the generalized state-space formalism of the flexible solar array drive system is derived.By the Lyapunov＇s method,an output-feedback-based PD control is developed,and the regularity and impulse-freeness of the closed-loop system are investigated in the framework of generalized system theory,followed which the admissibility of the control system is guaranteed.The effectiveness of the closed-loop control algorithm is verified by the numerical simulations and comparison with the open-loop algorithm.Finally,conclusions are drawn and a possible research topic is proposed.
出处
《空间控制技术与应用》
2013年第1期27-33,共7页
Aerospace Control and Application
关键词
太阳帆板驱动机构
挠性帆板
模态恒等式
广义系统
允许控制
solar array drive assembly
flexible solar array
modal identity
generalized system
admissible control
