The cleanliness of nursing equipment is directly related to the safety and health of patients,and improving its cleaning effect is crucial.In view of this,the experiment redesigned the cleaning module of the ultrasonic generator.During the experiment,taking into account the actual output of current and efficiency issues,the single-phase full bridge inverter circuit STM32 microcon-troller was selected as the core of the main power and control system circuit design;Subsequently,a comprehensive design was carried out on various aspects such as the control system and main program system.The results show that the maximum current driven by the harmonic series frequency signal is 5.5 A.Under the fuzzy PI control designed by the research institute,the tracking of the resonant frequency can be successfully completed after about 0.015 s econds,resulting in faster response speed.The experimental group had the highest cleaning pass rate for three types of nursing instruments:scissors,plates and bowls,and pliers.The above results indicate that the constructed ultrasonic generator system is very reliable and can effectively clean different types of nursing instruments,ulti-mately meeting medical requirements.
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