摘要
对频域辨识求取直升机气动与操纵导数方法进行了探索与研究。建立了直升机横航向运动辨识数学模型,并介绍了频域辨识原理;利用直升机模拟器横向扫频飞行测试数据,进行了直升机横航向气动与操纵导数辨识,并对辨识结果进行了时域验证。结果表明,所建立的频域辨识方法正确、可行,具有一定的工程应用价值。
The methods using frequency-domain identification to identify the helicopter aerodynamic and control derivatives is explored and researched in this article.First,the small perturbation linear motion equation of helicopter used as the model identified,and then the principle of frequency-domain identification was introduced in this paper.The helicopter aerodynamic and control derivatives of the lateral direction are identified from the lateral sweep flight test data in the helicopter simulator.After that,the derivatives identified are verified in the time-domain.It is demonstrated ultimately that the method researched in the article is right and feasible in engineering.
出处
《飞行力学》
CSCD
北大核心
2012年第4期310-313,327,共5页
Flight Dynamics
关键词
直升机
气动导数
操纵导数
频域辨识
时域验证
helicopter
aerodynamic derivative
control derivative
identification in the frequency-domain
time-domain verification
