| 闭环气动参数辨识的两步方法 |
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| 引用本文： | 王贵东,崔尔杰,刘子强.闭环气动参数辨识的两步方法[J].飞行力学,2010,28(2). |
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| 作者姓名： | 王贵东 崔尔杰 刘子强 |
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| 作者单位： | 中国航天空气动力技术研究院,气动理论与应用研究所,北京,100074 |
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| 摘 要： | 对于闭环控制飞行器动力学系统,如果输入输出数据中含有误差和噪声,将其直接用于辨识气动参数是有偏差的。针对这个问题,利用闭环控制飞行仿真数据,采用两步方法辨识飞行器的气动参数,并与直接开环辨识的结果及参数真值进行对比,表明两步方法辨识结果较直接开环辨识方法具有更高的精度,是一种有效的闭环气动参数辨识方法。
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| 关 键 词： | 闭环系统 气动参数辨识 极大似然估计 |
Closed loop identification of aerodynamic parameter using two-step method |
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| WANG Gui-dong,CUI Er-jie,LIU Zi-qiang.Closed loop identification of aerodynamic parameter using two-step method[J].Flight Dynamics,2010,28(2). |
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| Authors: | WANG Gui-dong CUI Er-jie LIU Zi-qiang |
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| Institution: | Institute of Aerodynamics Theories and Application;China Academy of Aerospace Aerodynamics;Beijing 100074;China |
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| Abstract: | For dynamic system of aircraft in closed loop control,the results will be partially inaccurate if in-out data with errors and noises is used for identifying the aerodynamic parameters.In this thesis,the two-step method of aerodynamic parameter identification for aircraft in the closed loop control is developed.The aerodynamic parameters are estimated for simulation example of aircraft in the closed loop control,and the results are compared with parameter's true values and the results of identification by op... |
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| Keywords: | closed loop system aerodynamic parameter identification maximum likelihood estimation |
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