The Study Of The Control System Of New Type Air Jet Loom

As a new-type non-shuttle loom, air jet loom has developed to an excellent technical level. But in our domestic area, we can just produce the low-end air jet loom. The reason rests with the difficulty of the control system. The domestic corporations want to survive, they have to break through the chokepoint of technical and develop the top grade air jet loom. Aiming at the working characteristic of air jet loom and referring to the trend of the loom technical, this article designed a control system of air jet loom.This article first analyzes the status in quo of new-type air jet loom, elaborates its working and control principles and confirms the scheme of PLC. Based on the particularity of air jet loom to input and output, the author designed the control system by using S7-224XP series PLC made by Siemens corporation in Germany as the CPU, analyzed the principle of hardware design in detail and made the plan of high-voltage part. According as the need of air jet loom, the author particularly elaborates the idea of design and makes the control program diagram. Furthermore, this paper simulates the effects of this control system in laboratory.Another emphases of this paper is the design of the drive system of the electric let-off. Due to the high precision of the let-off of the loom, the AC servo and other servo system can't perform very well. As stepping motor, it's torque-frequency characteristic consists with the load of the let-off, this article adopted DM5676A type stepping motor and it's driver of DMD402 type and designed the electric let-off, so that the system has adapted the need of the work of the air jet loom better.