| 电传飞机低阶等效系统频域辨识新方法 |
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| 引用本文： | 崔益华韩意新陈永亮.电传飞机低阶等效系统频域辨识新方法[J].南京航空航天大学学报,2016,48(3):432-437. |
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| 作者姓名： | 崔益华韩意新陈永亮 |
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| 作者单位： | 1.中航通用飞机有限责任公司科技与质量安全部,珠海,519030；
2.中国飞行试验研究院飞机所,西安,710089；
3.南京航空航天大学航空宇航学院,南京,210016 |
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| 摘 要： | 针对带有复杂电传飞控系统飞机的飞行品质评估难题，提出了采用Chirp-Z方法将时域信号变换至频域，并在此基础上利用频域方程误差法（Equation error method,EEM）和输出误差法（Output error method,OEM）相结合辨识电传飞机低阶等效系统（Low order equivalent system,LOES）参数的新方法，并以低阶等效系统辨识的标准算例（F-14飞机经典算例）进行验算。结果表明本文所提出的低阶等效系统辨识新方法正确、辨识精度高，可以应用于工程实践。
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| 关 键 词： | 低阶等效系统 Chirp-Z变换 参数辨识 |
New Frequency Domain Identification Method for FBW Aircraft Based on Low Order Equivalent System |
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| Cui Yihu,Han Yixin,Chen Yongliang.New Frequency Domain Identification Method for FBW Aircraft Based on Low Order Equivalent System[J].Journal of Nanjing University of Aeronautics & Astronautics,2016,48(3):432-437. |
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| Authors: | Cui Yihu Han Yixin Chen Yongliang |
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| Abstract: | A new method is proposed to assess the flying quality for the aircraft equipped with complex fly-by-wire flight control system. First, the Chirp-Z method is used to convert the time domain signal into frequency domain, and then a method combined with the frequency domain equation error method (EEM) and the output error method (OEM) is used to identify the parameters of low order equivalent system. Finally, the method is applied to a standard example of F-14 aircraft. The results show that the method is correct and has a good identification accuracy in
engineering practice. |
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| Keywords: | low order equivalent system Chirp-Z transform parameter identification |
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