基于实测响应反推标定非接触磁场激振器激振力

doi:10.12068/j.issn.1005-3026.2019.12.017

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (12): 1760-1766.DOI: 10.12068/j.issn.1005-3026.2019.12.017

基于实测响应反推标定非接触磁场激振器激振力

孙伟^1,2，王进^1,2

(1. 东北大学机械工程与自动化学院，辽宁沈阳110819；2. 东北大学航空动力装备振动及控制教育部重点实验室，辽宁沈阳110819)

收稿日期:2019-01-21 修回日期:2019-01-21 出版日期:2019-12-15 发布日期:2019-12-12
通讯作者: 孙伟
作者简介:孙伟(1975-)，男，辽宁营口人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目 (51775092).

Inverse Identification and Calibration of the Excitation Force of Non-contact Magnetic Field Exciter Based on Measured Response

SUN Wei^1,2， WANG Jin^1,2

1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion Systems， Ministry of Education， Northeastern University， Shenyang 110819， China.

Received:2019-01-21 Revised:2019-01-21 Online:2019-12-15 Published:2019-12-12
Contact: SUN Wei
About author:-
Supported by:
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摘要/Abstract

摘要： 为了拓宽非接触磁场激振器的使用范围，急需对该激振器作用在结构件上激振力的大小进行标定.以悬臂梁试件为例，提出一种基于实测结构件响应以及采用优化技术来标定非接触磁场激振器激振力的方法.首先，给出了非接触磁场激振力的标定原理及方法，即通过迭代计算最小化实测与有限元分析获得的悬臂梁振动响应偏差来反推确定激振力幅.然后，简要描述基于ANSYS软件创建悬臂梁有限元模型及求解振动响应的方法.接着，给出了利用ANSYS软件的优化模块来实现相关激振力幅反推标定的迭代求解过程.最后，针对一款非接触磁场激振器，利用所描述的方法对该激振器激振力幅进行了标定，获得了相关标定曲线以及电压与激振力幅之间的函数关系，展示了所提出方法的有效性.

关键词: 非接触磁场激振器, 振动响应, 激振力, 反推辨识, 标定方法

Abstract: To broaden the usable range of non-contact magnetic field exciter， it is urgent to calibrate the amplitude of excitation force acting on structure. A method was proposed to calibrate the excitation force of non-contact magnetic field exciter， which was based on the measured response of cantilever beam and used optimization technique. Firstly， the calibration principle and method of excitation force were presented. The iterative calculation was utilized to minimize the vibration response deviation between measurement and finite element analysis. Next， the methods for creating finite element model and solving vibration response based on ANSYS software were briefly described. Then， the iterative process of calibrating excitation force amplitude was described with the use of optimization module of ANSYS software. At last， the excitation force amplitude of non-contact magnetic field exciter was calibrated according to the proposed method. The calibration curves and the functional relationship between voltage and excitation force were obtained， which demonstrated the effectiveness of the method proposed.

Key words: non-contact magnetic field exciter, vibration response, excitation force, inverse identification, calibration method

中图分类号:

TB535

孙伟，王进. 基于实测响应反推标定非接触磁场激振器激振力[J]. 东北大学学报:自然科学版, 2019, 40(12): 1760-1766.

SUN Wei， WANG Jin. Inverse Identification and Calibration of the Excitation Force of Non-contact Magnetic Field Exciter Based on Measured Response[J]. Journal of Northeastern University Natural Science, 2019, 40(12): 1760-1766.

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基于实测响应反推标定非接触磁场激振器激振力

Inverse Identification and Calibration of the Excitation Force of Non-contact Magnetic Field Exciter Based on Measured Response

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