Expert Intelligence Control For The Electrical Heater

Expert system is one of technology that can be studied and applied most frequently recently years. The characteristic of ES is that can posses magnanimous knowledges of experts(include domain knowledges and experience knowledge). It can simulate the method of thinking of experts.lt can also make a policy of expert level degree for complicated and practical problems in domain . Appearing of ES has been making artificial intelligence a great progress. It make really AI from the laboratory toward practicality. It has been applying widespreadly in many domains.This text design a expert intellience controller for electrical heater of CO shift unit in a chemial. The author studies the method of control calulate, knowledge obtaining, process of production and development of DCS system.At first, author study deeply the principle and function of chemical reaction craft process of production and high temperature catalyst low temperature catalyst. The actuality . production running was investigated . The author has analyzed the effect factors for controlling electrical heater and has obtain a list raising temperature and reduction of catalyst and a list raising temperature and sulphurise. It has a foundation for establishing expert intellience control system behind.Then, author study deeply the principle of expert system and technique coning ture of EIC integrated actuality .It has no way to establish a mathematics model due to the complicated characteristics of electrical heater's temperature controlling. So the text adopt method that combine together ES and PID control to aim directly at the situation that PID control cann't fitted for whole process of controlling temperature very well. ,the author develope expert intellience controller in DCS system and make out a rule collection with expret control tactics to aim directly at the experience curve of rising temperature about a type of catalyst in a plant.Finally, the text outline DCSsystem and pocitive this idea feasible and economics about utilizing fully function and resources of DCS system .Obtaining knowledges apply newest edition "Visual FoxPro 6.0 database software. This will speed up to development greatly .Meanwhile, it supply fine user interface.The study of the text possess usable volue. The prepare of this system has a sense to raise chemical factory's level of contemporay control.