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Focusing on the application of PWM technology in steel mesh welding machine, this paper mainly introduces the common methods of PWM control technology, the working principle of inverted welding power source, the main role of PWM control technology in its working process and the process of signal transformation. The work of steel mesh welding machine is described by introducing the software program of the controller. The main control principle in the process. The system is simple, reliable and efficient, and can be widely used in steel mesh welding machine in construction industry. It provides a reliable guarantee for the reliability and efficiency of cement prefabrication preparation and labor cost saving.

The design and realization methods of the system of pulse synchronization ultrasonic treatment equipment is introduced in this paper. The core of the pulse synchronization ultrasonic treatment equipment system is SCM and DDS chip AD9833. The scope of the scale frequency is 998 kHz-1002 kHz. Punch advance is 1 Hz. The scope of transmitting intensity of ultrasonic sound is 0.1~3 W/cm2. The step-size can be regulated with 0.5 W continuously.