Research on grouped self-diagnosis control of seamless underwear machine solenoid valve

Aiming at actuality, seamless underwear machine has number of solenoid valves control points. Solenoid valve control point has a higher short circuit probability because of the quality problem of Solenoid valve. Through summarizing the performance characteristics and working requirements of each solenoid valve, the paper puts forward a kind of valve group control technology solution based on CAN bus. According to the position distribution of the valve group on the seamless underwear machine, the overall implementation method of the control technology is constructed. The key hardware design and software design are elaborated, and the CAN bus communication protocol is established. In order to avoid the occurrence of situation that valve control circuit is damaged due to short circuit of solenoid valve, a solenoid valve overcurrent protection method is proposed. The article improves the real-time and accuracy of the technology by deeply studying the working characteristics of the solenoid valve control points and combining the test data. The results indicate that this technology achieves the accuracy of the valve control action. At the same time, the safety of the underwear machine control system is improved to meet the seamless underwear machine control requirements for the valve group.