基于AVR与DDS技术的超声波电源研制  

Design of Ultrasonic Generator Based on AVR and DDS Technology

作　　者：孙科军[1] 隆志力[1] 吴运新[1] 齐欢[1] 

机构地区：[1]中南大学机电工程学院,湖南长沙410083

出　　处：《微计算机信息》2010年第20期120-121,119,共3页Control & Automation

基　　金：基金申请人:隆志力;项目名称:超声波在键合换能系统接触界面的传播机理与低耗接触界面设计;基金颁发部门:国家自然科学基金委(50605064);基金申请人:隆志力;项目名称:高频高性能芯片封装超声换能器的研制方法与关键技术;基金颁发部门:湖南省科技计划基金委(2007FJ3098)

摘　　要：设计了一种在500kHz内频率任意可调、3.2瓦内功率任意可调、且具备工作过程频率自动跟踪的超声电源。综合应用AVR单片机与DDS频率合成技术,能够调节输出频率并驱动换能器的多阶工作频率;采用触发器跟踪与电流最大值等跟踪方法,实现对换能器工作频率的实时精确跟踪,满足压电换能器的稳定谐振工作的要求。此外,本超声电源具备多种波型输出、LCD显示、键盘输入、自动扫频等多种功能,可应用于半导体芯片引线键合、医疗超声、超声金属加工等领域。An ultrasonic generator with frequency adjusted freely and automatic frequency tracking is designed.By integrating the advanced technology such as AVR-microcontroller and DDS chip,this generator can output any frequency and then driving any working frequency of the transducers.By using D-trigger and maximum-current methods,the generator can precisely track the transducers for stable resonance vibration.In additions,the ultrasonic generator includes many functions such as several wave choice,LCD display,Keyboard input,over-current protection and automatic frequency-sweep.This generator can be used in many machines such as semiconduction wire bonding,medicine ultrasonic and ultrasonic metal mill.

关 键 词：超声波电源 AVR DDS 频率跟踪 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]