Development of plc-based tension control system English translationDevelopment of PLC-based Tension Control SystemAbstractFiber winding tension is an important factor in the molding techniques of comp

, programmable logic controllers (PLCs) have gradually become the preferred control method in tension control systems due to their high reliability, strong anti-interference ability, and easy programming. In this paper, we propose a closed-loop tension control system based on a PLC with function modules as its control kernel, an AC servo motor as the execute element, and a radius-following device to accomplish real-time radius compensation.

The tension control system consists of three parts: the tension sensor, the control system, and the execute element. The tension sensor is used to detect the tension of the fiber during the winding process and send the signal to the control system. The control system is composed of a PLC, function modules, and a human-machine interface (HMI). The PLC is used as the control kernel to perform data processing and control calculation, and the function modules provide the necessary control functions. The HMI is used to display the system status and adjust the control parameters. The execute element is an AC servo motor, which adjusts the tension of the fiber through the tension roller.

To compensate for the radius change during the winding process, a radius-following device is introduced. The radius-following device is composed of a displacement sensor and a servo motor. The displacement sensor is used to detect the position of the scroll, and the servo motor adjusts the position of the tension roller according to the displacement signal to achieve real-time radius compensation.

The numerical model of the tension control system is established, and the compensation technique of the radius of the scroll is analyzed. The experimental results show that the system has high control precision and fast response speed, and can achieve stable and adjustable tension during the winding process.

In conclusion, the PLC-based tension control system proposed in this paper has good stability, high control precision, and fast response speed, which can effectively improve the winding quality of composite materials