High power resonant tracking amplifier using admittance locking

被引：38
作者：
Mortimer, B
du Bruyn, T
Davies, J
Tapson, J
机构：
[1] Cape Technikon, Ctr Instrumentat Res, Dept Elect Engn, ZA-8000 Cape Town, South Africa
[2] Univ Cape Town, Dept Elect & Elect Engn, ZA-7701 Rondebosch, South Africa
来源：
ULTRASONICS | 2001年 / 39卷 / 04期
关键词：
high power; ultrasonic; transducers; control; resonance locking;
D O I：
10.1016/S0041-624X(01)00060-9
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A high power resonance tracking ultrasonic amplifier is described. The amplifier is a class D type inverter, configured as a half-bridge in which the output MOSFETs are driven into saturation when on. The resonance tracking system makes use of a new method of frequency locking; admittance locking is used to track the optimum power conversion frequency for the transducer. This new arrangement offers some advantages over phase locking and motional feedback methods. The system is capable of delivering up to 3 kW at up to 25 kHz in resonance tracking operation. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：257 / 261
页数：5
相关论文
共 7 条
1