摘要
作为一种材料加工方法,超声焊接技术的应用日益广泛。针对超声焊接过程中超声换能器谐振频率发生漂移的问题,提出了一种基于AT89S52单片机、脉宽调制(PWM)型控制芯片SG3525A和数字电位器的逆变式超声焊接电源频率自动跟踪技术。介绍了超声焊接电源主电路和频率跟踪电路的工作原理以及所用器件的功能,并给出了超声焊接电源频率跟踪子程序的流程。与传统电路相比,所设计的频率跟踪电路具有简单、新颖、实用等优点。
As a kind of material processing method,the application of ultrasonie welding technology is increasingly widespread.During the process of ultrasonic welding,the resonant frequency of ultrasonic transducer may drift.Aimed at this problem ,a kind of technology based on MCU AT89S52,PWM chip SG3525A and digital potentiometer for frequency automatic tracking for inverter ultrasonic welding power is put forward.The working principle of the main circuit and frequency tracking circuit,the function of the main devices are introduced.The flow chart for the frequency tracking subroutine is also given.Compared with the conventional frequency traeking circuit, the designed one is simple, innovative, practical, etc.
出处
《电焊机》
北大核心
2009年第4期138-140,共3页
Electric Welding Machine
