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 method of obtaining aerodynamic and manipulated derivative of helicopter in frequency domain is explored and studied. The mathematical model of helicopter lateral motion recognition is established, and the principle of frequency domain identification is introduced. The aerodynamic and manipulative derivatives of helicopter cross-heading are identified using the horizontal flight test data of helicopter simulator. The identification results are validated in time domain. The results show that the established frequency domain identification method is correct and feasible, and has certain engineering application value.