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挠性飞行器姿态稳定鲁棒变结构控制
引用本文:赵艳彬,王萍萍,王本利,马兴瑞. 挠性飞行器姿态稳定鲁棒变结构控制[J]. 动力学与控制学报, 2005, 3(3): 1-6
作者姓名:赵艳彬  王萍萍  王本利  马兴瑞
作者单位:哈尔滨工业大学航天工程与力学系,哈尔滨,150001;哈尔滨工业大学航天工程与力学系,哈尔滨,150001;哈尔滨工业大学航天工程与力学系,哈尔滨,150001;哈尔滨工业大学航天工程与力学系,哈尔滨,150001
摘    要:针对三轴稳定卫星的模型参数存在不确定性,设计了一种鲁棒变结构控制器,它能确保系统在一定条件下具有全局渐近稳定性,并且系统在一定条件下能在有限的时间内到达滑动平面,具有鲁棒到达条件,同时控制律实现简单,采用积分型滑动平面,能保证系统在到达滑动平面后具有良好的性能,最后根据卫星参数给出了具体的数值算例,数值仿真结果良好,从数值仿真结果来看控制器在存在较大不确定性情况下(考虑系统转动惯量有5%的不确定性)依然保持良好性能,具有很强的鲁棒稳定性,而且,采用边界层改进控制器后,能有效地解决抖振问题,同时控制器的性能基本保持不变,说明鲁棒变结构控制器的设计是有效的。

关 键 词:挠性  不确定性  变结构控制  鲁棒
收稿时间:2005-01-13
修稿时间:2005-07-04

Application of variable structure robust attitude controller to flexible spacecraft
Zhao Yanbin,Wang Pingping,Wang Benli and Ma Xingrui. Application of variable structure robust attitude controller to flexible spacecraft[J]. Journal of Dynamics and Control, 2005, 3(3): 1-6
Authors:Zhao Yanbin  Wang Pingping  Wang Benli  Ma Xingrui
Abstract:This paper considered the influence of uncertainty in designing a variable structure flexible spacecraft attitude stability controller,and it provided one robust variable structure controller. The model can guarantee that the system has asymptotic stability under a certain condition, can reach the sliding mode hyperplanes in a limited time under a certain condition, and has good performance in sliding mode hyperplanes to the system. The controller is good according to the numerical simulation results when assuming the system inertia to be 5 % uncertainty, still keep good performance and has good robust stabilities. The controller can be further improved when adopting a border lager, because it can effectively .solve the shiver problem, and at the same time keeps the performance basically intact.
Keywords:flexible   uncertainty   variable structure control   robust
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