RESEARCH ON SELF-SENSING PRINCIPLE OF RESONANCE FREQUENCY FOR MAGNETOSTRICTIVE VIBRATOR
XU Ai-qun1,2; SONG Xiao-wen1; HU Shu-gen1
(1. College of Mechanical and Energy Engineering,, Zhejiang University, Hangzhou 310027, China;2. Department of Mechanical Engineering, Jiaxing College,Jiaxing 314001,China)
Abstract:Work efficiency of vibration system is tiptop while working in resonance frequency, but its resonance frequency occur excursion when affected by load,temperature and other factors. The method of resonance frequency self-sensing and automatic following in convenience and speediness by searching velocity impedance are presented, to self-regulate working frequency and improve working efficiency of vibration system, without fixing sensor for inspecting resonance frequency. Giant magnetostrictive vibrator is designed. Mechanical impedance expression of vibrator is given. Self-sensing models of velocity, impedance and effected force for giant magnetostrictive vibrator are deduced based on analysis of piezomagnetic coupling relation of giant magnetostrictive material. The result of vibration experiment system manifested that the calculation approach of self-sensing resonance frequency is feasible and proper.
徐爱群;宋小文;胡树根. 超磁致伸缩振动器谐振频率自感知机理研究[J]. , 2010, 29(3): 26-29.
XU Ai-qun;SONG Xiao-wen;HU Shu-gen . RESEARCH ON SELF-SENSING PRINCIPLE OF RESONANCE FREQUENCY FOR MAGNETOSTRICTIVE VIBRATOR. , 2010, 29(3): 26-29.