An Intelligent Monitoring System of Medium-Frequency Induction Furnace Based on Fuzzy Control

Aiming at the problem such as slowly-varying, pure-lag and low accuracy in the temperature control process of medium-frequency induction furnace, designed an intelligent monitoring system based on fuzzy control. The major hardware is composed of Program Logic Controller and its special expansion modules, the algorithm of fuzzy controller is completely realized via software programming. In order to improve the resolution rate of fuzzy subsets, selected a kind of optimized triangle-shape membership function which based on the golden section algorithm to instead the common symmetrical triangle-shape function. The paper detailedly introduced the working principle of system, implementation procedure, off-line simulations result and practiced applications effects. Simulations and applications show that the system has advantages of simple configuration, low cost and high reliability. As a result, the system reaches the ideal effect.