基于LPC2212的超声波电源频率跟踪系统研究

摘要

Frequency tracking is a significant character of ultrasonic power supply.The system is easy to lose phaselocked when there is a sudden change in ultrasonic power load.A ultrasonic power supply which adopts a new frequency-tracking method based on LPC2212 is proposed.And the method is described with a detailed flow chat of frequency tracking program.The experimental results show that the ultrasonic power based on LPC2212 has the advantages of high speed of dynamic response, high precise of detection and good characteristics of frequency tracking.%频率跟踪是超声波电源的一个重要特性.针对目前超声波电源负载发生突变时系统易失锁的问题,提出了一种基于LPC2212的超声波电源频率自动跟踪控制,并对其频率跟踪控制方法进行了阐述,给出了频率自动跟踪实现流程图.通过实验证明该控制方法具有检测精度高、动态响应速度快、频率跟踪稳定性高等优点.