Matching Design for Electrical Impedance of Ultrasonic Peen Forming Transducers Operated at High Voltages

被引：0
|
作者：
Shi L. [1 ]
Lu X. [1 ]
Li W. [1 ]
Qian F. [1 ]
Cao D. [1 ]
Li H. [1 ]
机构：
[1] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2023年 / 43卷 / 05期
关键词：
impedance characteristics; matching cir⁃ cuit; resonant frequency; ultrasonic peen forming transducer;
D O I：
10.16450/j.cnki.issn.1004-6801.2023.05.006
中图分类号：
学科分类号：
摘要：
On the basis of the impedance variation under different voltages，an electrical matching design is pre⁃ sented to improve the performance of ultrasonic peen forming（UPF）transducers operated at high-voltage condi⁃ tions. Firstly，the voltage，current and temporal phase difference are measured for UPF transducers under high driving voltages，and then the actual impedance characteristic curve is obtained. Secondly，inductor values for both parallel and serial matching circuit are calculated and testified at resonance frequency for the UPF trans⁃ ducer. Then，the inductance value is accurately tuned to achieve the ideal pure resistant characteristic with the largest active power. Finally，the matching design is coupled with self-made driving board to supply electrical powers for UPF transducer，and the peening performances before and after matching are compared by measur⁃ ing the movement of impact pins. Experimental results reveal that the maximum displacement for impact pins in⁃ creases from 2.7 mm to 4.9 mm after incorporating the serial matching circuit with 2.6 mH inductor，demonstrat⁃ ing the feasibility and effectiveness of the proposed matching method. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：880 / 885
页数：5
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