Prebake Aluminum Intelligent Fuzzy Control System Research And Development

Aluminium electrolysis is a complex production process with large numbers of aluminium electrolytic cells, high energy consumption, heavy dusty, strong magnetic field, bad environment and strong intensity of labor. The application of computer automatic control technology in the produced course of aluminum electrolysis has important meaning. It can increase current efficiency, decrease energy consumption, improve the labor productivity, reduce the labor strength, improve the production environment and management, promote enterprise development, create better economic benefits and social benefits.The method of intelligent fuzzy control has the trait of artificial intelligence, it can simulate experts' operational experience and human thought way, so it has been used widely in many fields such as process control and so on, and has got very good application effect.Pre-baked aluminium electrolytic cell is a non-linear, multivariable and time-varying system, its model is uncertain. It is difficult to detect the alumina concentration, polar distance, temperature and mole ratio on-line, so it is more easily to control pre-baked aluminium electrolytic cell by the method of intelligent fuzzy control. In accordance with the features above and combined with the best technology "four low and one high", we design an intelligent fuzzy control system for aluminium electrolytic cell Based on collecting of experience and knowledge of expert control, we summarize new control strategy. The control system for tank can finish independently mostly control functions. It can sample voltage and current online, control alumina content and regulate polar distance, analysis and report cell noise, predict the anode effect and warning with sound and light, keep watch on and control artificial schoolwork process. At the same time it can connect with monitoring computer to exchange data and receive parameters, which are tuned and optimized by monitoring computer. And this can make the control to the aluminium electrolytic cell more accurate and reliable.This thesis discusses expert system and fuzzy control technology; dissertates emphatically the apply of intelligent fuzzy control method inthe control of aluminium electrolytic cell; illuminates in detailed the idea of design with realization of the system's software and hardware; at the same time, with the technology characteristic of the aluminium electrolytic cell, the thesis discusses the methods of anti-interference in control system.The work we do will promote strongly the development of control technology to pre-baked aluminium electrolytic cell and gain huge economic benefits. At the same time, it will promote the development of intelligent fuzzy control technology and its extensive application in industrial process control.