The ultrasonic lace machining products of Changzhou Jiapu mechanical equipment Co., Ltd. have good water tightness: when the output frequency of the ultrasonic generator does not match the frequency of the transducer, it not only affects the experimental results, but even damages the equipment when the deviation is large. Therefore, we use frequency tracking technology to make the output frequency of the ultrasonic generator consistent with the frequency of the transducer, so as to ensure the quality of stitching and embossing, and greatly extend the life of the ultrasonic generator and transducer device; its power and frequency adopt the form of high frequency oscillation of analog pulse, which can observe the change of power and frequency at any time, so as to control and detect the ultrasonic. Equipment: ultrasonic plastic welding machine) provides accurate basis. Through the frequency scanning technology, all the transducers have the opportunity to work at the resonance point, so that the load of the ultrasonic transducer is balanced, avoiding the fatigue caused by the difference between the frequency of the transducer and the generator, which makes some transducers work at full load all the time, thus leading to the first damage.