Ultrasonic generator for the piezoelectric transducer in IoT

An IoT ultrasonic generator for the ultrasonic machining system is studied and developed. We used an embedded system to construct an IoT node. The embedded system controls a switch-amplifier that amplifies the power for alternating current excitation signal. The system realizes the functions of frequency sweep, lock, and tracking through the phase angle and the current signal feedback. The experiment results show the IoT ultrasonic generator can monitor the system, remote control, record the current and the phase angle. Moreover, this equipment has automated and smart manufacturing with promising potential for further improvement makes the designed circuit suitable for future practical applications.