Coupling Characteristics of Dual Inertial Exciter Blade Fatigue Loading System

doi:10.11908/j.issn.0253-374x.2017.07.011

Home > Archive>Volume 45, Issue 07, 2017 >1016-1021. DOI:10.11908/j.issn.0253-374x.2017.07.011

Coupling Characteristics of Dual Inertial Exciter Blade Fatigue Loading System
DOI:
                        10.11908/j.issn.0253-374x.2017.07.011
                    
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                        LIAO GaohuaLIAO Gaohua
School of Mechanical Engineering, Tongji University, Shanghai 201804, China; Nanchang Institute of Technology, Key Laboratory of Precision Drive and Control of Jiangxi Province, Nanchang 330099, China
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WU JianzhongWU Jianzhong
School of Mechanical Engineering, Tongji University, Shanghai 201804, China
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ZHANG HaoZHANG Hao
School of Mechanical Engineering, Tongji University, Shanghai 201804, China
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Abstract:

A mathematical equation system was derived based on the Lagrange method for wind vane electric double inertia vibrator fatigue loading system, and thus a electromechanical coupling equation of the system was built. Using the small parameter cycle average method, the approximate analytic system vibration was derived for coupling process synchronization stability conditions. The influencing factors on the motor load torque in the process of system operation were obtained, and the mechanism of system coupling was revealed. On this basis, a simulation model was established to numerically simulate system frequency characteristic, and the vibration characteristics of blade under different loading frequencies were obtained. Experimental study on system frequency characteristics, main resonance electromechanical coupling characteristics, and control synchronization verifies the correctness of the mathematical model and simulation model and the feasibility of the control, providing reference for engineering application of fatigue loading system and test.

Key words:wind blade; fatigue testing; dual inertial exciter; coupling vibration

Reference

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LIAO Gaohua, WU Jianzhong, ZHANG Hao. Coupling Characteristics of Dual Inertial Exciter Blade Fatigue Loading System[J].同济大学学报(自然科学版),2017,45(07):1016~1021

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Received:August 17,2016
Revised:April 26,2017
Adopted:April 17,2017
Online: July 20,2017
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