变频跟踪调速带式输送机PLC模糊控制系统设计

本文对矿山带式输送机的现状进行了分析,上下游皮带需要根据载荷来动态调整带速,根据这一特点利用模糊控制理论,设计了一个模糊控制器,根据各级皮带载荷,智能调节各级皮带的速度,即本条皮带与下游皮带速度之差和本条皮带的载荷变化率的数据,经过模糊控制器处理后输出相应的模拟信号给变频器,变频器来调节带式输送机的运行速度,实现沿线带式输送机速度的跟踪调节。设计了以S7 1200PLC为控制核心的皮带控制系统,利用西门子TIA portal编程软件和MATLAB仿真软件,完成了带式输送机的变频跟踪调速的程序设计,并对模糊控制器进行了仿真验证,实现了顺料流启动、顺料流停止、有料运行、无料停机、料多快转、料少慢转、速度同步跟踪调节的自动控制功能。

Design of PLC Fuzzy Control System for Frequency Tracking Speed Regulating Belt Conveyor

The current status of the operation of a belt conveyor is analyzed, due to the fact that the upstream and downstream belts need to adjust the belt speed dynamically with the load, a fuzzy controller is designed to adjust the belt speed according to the load of each belt. The difference between the speed of the belt conveyor and the downstream belt and the load change rate of the belt are processed by the fuzzy controller, and then the controller transfers the corresponding analog signal to the frequency converter. Thereby, the running speed of the belt conveyor is adjusted, and the synchronous tracking adjustment of the speed is realized. Based on S7 1200 PLC, a specific hardware system for belt conveyor control is designed. This thesis uses Siemens TIA portal programming software and MATLAB simulation software to complete the program design of Frequency Conversion Tracking Speed Regulation. The fuzzy controller has been simulated and verified, and the automatic control functions of the flow start, the flow stop, running with load, stopping without load, turning quickly with more load, turning slowly with less load, and synchronous tracking and adjustment of speed have been realized.