40KHZ 100W Ultrasonic Generator Circuit Board For Ultrasonic Cleaning Dishwasher

Aiming at the characteristics of narrow working band and fast frequency tracking speed in the application of low power ultrasound, a frequency automatic tracking scheme combining fuzzy control intelligent algorithm and direct digital frequency synthesis technology is proposed. According to experience, a fuzzy controller is formulated to track the working frequency quickly, Adjust the driving frequency to near the resonance frequency. Then, only the direct digital frequency synthesis technology is used to fine tune the frequency, so that the power frequency works at the resonance frequency point of the ultrasonic transducer