基于希尔伯特变换的舵机系统间隙参数辨识及试验方法

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Abstract To identify clearance parameters of a control actuator system, a test device with adjustable clearance was designed to simulate clearance of a control actuator system’s transmission mechanism.Static load was exerted on it and sudden unloading made it have free vibration.The free vibration analysis method based on Hilbert transformation was used to obtain its double-fold line elastic force curve, and its clearance parameters were identified.This method was applied in clearance identification of control actuator system of an actual aero-craft.It was shown that vibration data acquired with the proposed test method have good signal-to-noise ratio; the proposed method’s engineering evaluation results are more secure; it has a good applicability for small control actuator systems.

Key words： clearance Hilbert transformation control actuator nonlinear system identification

Received: 28 May 2018 Published: 28 February 2020

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	Articles by authors
	SHI Xiaoming1
	DOU Yibin1
	MEI Xinglei1
	XU Quan1
	TAO Jian2

Cite this article:

SHI Xiaoming1,DOU Yibin1,MEI Xinglei1, et al. Clearance parametric identification and test method for a control actuator system based on Hilbert transformation[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(5): 262-266.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I5/262

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