| 基于观测器的上面级姿控发动机时间滞后补偿控制方法 |
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| 引用本文： | 陈海朋,于亚男,余薛浩,黄飞.基于观测器的上面级姿控发动机时间滞后补偿控制方法[J].上海航天,2018(4):42-47. |
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| 作者姓名： | 陈海朋 于亚男 余薛浩 黄飞 |
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| 作者单位： | 上海航天控制技术研究所 |
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| 摘 要： | 针对上面级姿控发动机响应延迟导致姿态角速度控制精度下降的问题,建立了系统动力学模型,分析姿控发动机响应延迟对姿态控制的影响,采用Smith预估补偿算法提高系统控制精度,对于理论模型的不确定性,采用鲁棒观测器对姿态发动机输出进行估计。仿真结果表明:所提出的方法可有效减小姿控发动机响应延迟对控制精度的影响,为上面级长期在轨高精度飞行提供技术支撑。
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| 关 键 词： | 姿态控制 上面级 开关控制 姿控发动机 时间滞后 观测器 Smith预估 控制精度 |
| 收稿时间： | 2017/2/27 0:00:00 |
| 修稿时间： | 2018/1/15 0:00:00 |
Compensation Control Method Based on Observer for Loop Delay from Attitude Control Engine |
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| CHEN Haipeng,YU Yanan,YU Xuehao and HUANG Fei.Compensation Control Method Based on Observer for Loop Delay from Attitude Control Engine[J].Aerospace Shanghai,2018(4):42-47. |
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| Authors: | CHEN Haipeng YU Yanan YU Xuehao and HUANG Fei |
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| Affiliation: | Shanghai Aerospace Control Technology Institute, Shanghai 201109, China,Shanghai Aerospace Control Technology Institute, Shanghai 201109, China,Shanghai Aerospace Control Technology Institute, Shanghai 201109, China and Shanghai Aerospace Control Technology Institute, Shanghai 201109, China |
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| Abstract: | This paper intends to solve the problem that the attitude control precision is reduced due to the response delay of the upper stage attitude control engine. Firstly, in order to avoid the impact of the response delay of such engine on the attitude control, a Smith-predictor based compensator is proposed to improve the control accuracy. Secondly, as for uncertainties of the theoretical model, a robust observer is used to estimate the output of the engine. Simulation results show that the proposed method can effectively reduce the impact of loop delay from the attitude-control engine on the control accuracy. |
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| Keywords: | attitude control upper stage switching control attitude control engine time delay observer Smith predictor controlling precision |
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