The Design And Implementation Of The Configurable Function Blocks Tension Controller

The tension is an important part of coil products in the production process, and it is widely used in wire and cable, printing and packaging, aluminum foil, paper, textile and other industries. With the development of information technology, the precision of the tension control system and the degree of automation also will increase, the design of the machine model will be different, and tension controller will need new requirements with the machine model changes.The traditional tension controller features a single, performance accuracy is low. At the same time, it also has a slow response time and other shortcomings. The input ports and output ports are determinate, the corresponding function and the port can not be changed in accordance with the requirements of the user's, so it is unable to meet the needs of the design of the machine model what is gradually varied. With the method of function block configuration, a single controller to meet the different models will be meaningful.In this design, the hardware circuit covers the hardware resources needed by the various control models, and all functions are made up of sub-modules. Various control models are made up through deploying the properties of the parameter configuration of input and output ports, and selecting a corresponding sub-modules tension control system. The system uses a dual-CPU architecture, the panel and board use the STM32chip as the core control chip with color LCD display, multi-layer menu operation, so it is simple and clear; The system uses high-precision amplifier circuit, high-precision AD and DA to improve tension control accuracy; self-learning PID algorithm to speed up the system response time and improve system stability.Firstly, the thesis explains the composition and implementation of configurable function block tension controller, proposes the necessity and feasibility of deploying the function blocks and the input and output ports, and introduces the function blocks and input and output ports. It also introduces the method of deploying the function blocks and input and output ports, and then analyze and test the hardware and software supporting the system. Finally the thesis uses the intermediate shaft tension control model and the double-loop tension control model as examples to illustrate the tension control specific configuration method.Design results show that the configurable function block tension controller is well with high control precision, fast response time, good stability, simple operation. The tension controller can be deployed to meet the command of the different industries, different models on the tension control.