Boiler Drum Level Three Impulses Adaptive Fuzzy Pid Control

The Self-Adaptability Fuzzy PID Control with Three Implue for Boiler Water LevelThe system for boiler water level is an typical compicated thormal techical system. At present,the diversified style boilers have several lac in china. due to equipmet's separated, no good of manage and the causation of technic, Due to above causation,it is diffcult that the most boiler in good condition,and increasing the fuel's consume and depressing efficiency of the boiler.The problem of modeling and control is a attention focus of people.the boiler water lever is importance index of industry boiler safety and satabilization. it is importance meanimg to ensure water level in definite range for increasing quality of steam and reducing wastage of equipment and insuring safety of whole hert-power-net At present, the mostly method is adopt the routine PID control. because of routine PID control parameter is changeless. It is difficuty to adapt the diversied disturb and variational object. The method is not satisfy require and ideality.The fuzzy control based on foundation of manpower experience, it is summarize and describe of skill woker's practise experience, it is giverd expression to using vocabulary,it's gained mathematics model of nonprecise object. The fuzzy control is facility to be accepted and structure.This article analyses dynamic characteristic of water level object and introduces traditional control method. Because there are three inputs accede to adister of water lever control system of boiler,it is easy to bring error of water lever controlling. This iartice puts forward two methods to dispel error of water lever: (1)assistant signal self-disappear. (2)assistant signals each other dispel. According to three impulse control water lever error, designing three impulse PID cascade control system.A ccording to actuality of boiler control,putting forward fuzy control rule of paramete self-adaptability, designing The Self-Adaptability Fuzz PID Control System. This system gets over disadvantage of no precision and difficulting to adjust parameter for using tradition control methods. This article designes cascade PIDcontrol system and self-adaptability fuzzy PID three impulse control system for...