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。
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.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2016年第3期432-437,共6页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
低阶等效系统
CHIRP-Z变换
参数辨识
low order equivalent system
Chirp-Z transform
parameter identification
作者简介
通信作者：陈永亮，男，博士，讲师，E-mail：chenyl79@nuaa．edu．cn。
