Vibration harmonic suppression technology for electromagnetic vibrators based on an improved sensorless feedback control method  

作　　者：Wei LI Junning CUI Xingyuan BIAN Limin ZOU 

机构地区：[1]Centerof Ultra-precision Optoelectronic Instrument Engineering,Harbin Institute of Technoogy,Harbin 0080,China [2]Key Lab of Ultra-precision Intlligent Instrumentation(Harbin Institute of Technology).Ministry of Industry and Information Technology,Harbin 150080,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2024年第3期472-483,共12页信息与电子工程前沿（英文版）

基　　金：Project supported by the Natural Science Foundation of Heilongjiang Province,China(No.LH2021E060);the National Natural Science Foundation of China(No.52075133);the CGN-HIT Advanced Nuclear and New Energy Research Institute,China(No.CGN-HIT202215)。

摘　　要：To realize low harmonic distortion of the vibration waveform output from electromagnetic vibrators,we propose a vibration harmonic suppression technology based on an improved sensorless feedback control method.Without changing the original driving circuit,the alternating current(AC)equivalent resistance of the driving coil is used to obtain high-precision vibration velocity information,and then a simple and reliable velocity feedback control system is established.Through the study of the effect of different values of key parameters on the system,we have achieved an effective expansion of the velocity characteristic frequency band of low-frequency vibration,resulting in an enhanced harmonic suppression capability of velocity feedback control.We present extensive experiments to prove the effectiveness of the proposed method and make comparisons with conventional control methods.In the frequency range of 0.01-1.00 Hz,without using any sensors,the method proposed in this study can reduce the harmonic distortion of the vibration waveform by about 40%compared to open-loop control and by about 20%compared to a conventional sensorless feedback control method.

关 键 词：Vibration calibration Electromagnetic vibrators Harmonic suppression Sensorless control method Velocity feedback control 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]