Multifrequency Ultrasonic Generator System For Waterproof Underwater Ultrasonic Cleaning Machine

Multifrequency Ultrasonic Generator System For Waterproof Underwater Ultrasonic Cleaning Machine

The function of the analog driving circuit of the ultrasonic generator is to amplify the ultrasonic electrical signal to make the urban frequency electrical signal have a certain electrical power, and then add it to both ends of the ultrasonic transducer to drive the ultrasonic transducer to work and emit ultrasonic mechanical wave into the ultrasonic cleaning tank.

The main function of the signal generation and frequency tracking in the ultrasonic generator is to provide the required ultrasonic frequency small power signal voltage for the field effect tube grid in the ultrasonic analog drive circuit. The frequency of the small signal voltage should change with the change of the resonant frequency of the ultrasonic transducer, so that the ultrasonic transducer will always work in a resonant state.

Due to the gradual approximation of the maximum value by current search, this method is simple and feasible, and we generally adopt this approach. The tracking principle is: when the ultrasonic transducer works normally, if the frequency of the ultrasonic generator is consistent with the frequency of the transducer, the system is in the best working state. At this time, the current flowing through the ultrasonic transducer reaches the maximum, and the voltage value on the sampling resistance is also the maximum. If the transducer is in a detuned state, take the voltage to decrease. Due to different system loads, the maximum resonant current is different. For a given system, its current curve is fixed, and there is always a maximum value. If the frequency of the ultrasonic generator can be adjusted in time to make the current in the ultrasonic transducer at the maximum value, then the frequency can be automatically tracked.

Multifrequency Ultrasonic Generator System For Waterproof Underwater Ultrasonic Cleaning Machine

标签：Multifrequency Ultrasonic Generator System, Ultrasonic Generator System For Waterproof Underwater Ultrasonic Cleaning Machine