| 基于最优控制的航天器断续姿控系统设计方法 |
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| 引用本文： | 王勇,李延军,张亮,陈阳,檀朋硕.基于最优控制的航天器断续姿控系统设计方法[J].导弹与航天运载技术,2017(4). |
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| 作者姓名： | 王勇 李延军 张亮 陈阳 檀朋硕 |
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| 作者单位： | 北京宇航系统工程研究所,北京,100076 |
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| 摘 要： | 传统基于姿控喷管的断续姿控系统多采用经典的斜线开关线设计非线性控制律,系统设计时往往难以同时满足姿控精度、推进剂消耗、喷管开关次数等要求和约束。为进一步优化系统设计,实现各性能指标闭合,提出了基于最优控制的断续姿控系统二次型开关线控制方法,并推导得到了系统姿控精度模型。通过仿真试验对比了传统斜线开关和二次型开关控制的性能。仿真结果表明,两种方法下系统姿控精度计算模型正确,性能指标各有优劣,姿控系统设计时可依据系统约束综合考虑选取不同方案。
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| 关 键 词： | 非线性控制 最优控制 斜线开关 二次型开关 |
An Optimal Control Method for Discontinuous Attitude Control System of Spacecraft |
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| Wang Yong,Li Yan-jun,Zhang Liang,Chen Yang,Tan Peng-shuo.An Optimal Control Method for Discontinuous Attitude Control System of Spacecraft[J].Missiles and Space Vehicles,2017(4). |
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| Authors: | Wang Yong Li Yan-jun Zhang Liang Chen Yang Tan Peng-shuo |
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| Abstract: | Slantwise on-off switching line is ordinarily used for discontinuous attitude control system of spacecraft, while it is not easy to satisfy the requirement of accuracy, attitude control speed, propellant consumption and nozzle on-off time at the same time. In order to optimize system design and offer more choice, linear quadratic control method is derivate based on optimal control theory, and the attitude control accuracy is deduced. Attitude stabilization process is simulated using both methods. Simulation results show that the accuracy model is accurate; both methods have its advantage and disadvantage, thus provide more choice for discontinuous attitude control system design. |
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| Keywords: | Nonlinear control Optimal control Slantwise on-off switching line Linear quadratic control |
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