摘要：介紹了一種基于PWM技術(shù)的智能超聲波清洗電源的設(shè)計(jì)，詳細(xì)介紹了PWM信號(hào)產(chǎn)生電路、單片機(jī)控制電路、功率放大電路、保護(hù)電路以及超聲波電源與換能器的匹配設(shè)計(jì)，并給出了系統(tǒng)軟件設(shè)計(jì)方案。設(shè)計(jì)的超聲波電源控制精度高，參數(shù)調(diào)整方便且具有靈活多樣的控制功能。 敘詞：超聲波清洗 頻率跟蹤 PWM信號(hào) 功率放大 阻抗匹配 Abstract：An intelligent ultrasonic cleaning power supply based on PWM technology is introduced The PWM signal generating circuit, microcontroller circuit, power amplifier, protection circuit and the matching circuit are described in detail. Finally, the designing scheme of the systemic software is presented. The ultrasonic power provides flexible and diversified functions and is with high control accuracy, convenient to adjust its parameters. Keyword：Ultrasonic cleaning, Crequency tracking, PWM Signa, Power amplifier, Impedance matching