Control system of a multifunctional shoe upper circular machine
                                                DAI Ning, PENG Laihu, HU Xudong, NIU Chong, ZHOU Jiachao
（The Center for Engineering Technology of Modern Textile Machinery & Technology of Ministry of Education, Zhejiang Scitech University,Hangzhou 310018, China）

Abstract: Aiming at the defects in the functionality and stability of the current control system of the shoe upper circular machine in China, the mechanical structure and weaving process of the upper machine were studied, a control system of one kind of multifunctional shoe upper circular machine was proposed.The design ideas of dualport RAM control circuit, memory control circuit, communication transceiver circuit, position detection circuit and zero detection circuit were described, the implementation process of software such as the calculation procedure for the needle position of the shoe upper, the needle position compensation program, and the control program for the pattern and chain motion were focused on.The control system was applied to the upper body of the upper body of the shoe machine to perform the overall functional test.The results indicate that multifunctional shoe upper circular machine using this system has high efficiency,can be separated or combined jacquard on the upper and lower plate,which can produce weaving mesh fabric, knitted uppers and other fabrics of variable fabric elasticity.

Key words: shoe upper circular machine; functional characteristics; stability; control system