Fuzzy Control Of Boiler Feed Water Automatic Control System

The boiler has been widely used in heating,chemical,power generation,oil refining,textiles,paper and sugar industries and the civilian sector.In order to ensure the production of boiler security,stability,boiler automatic control is very important.The drum level boiler is a very important controlled variable.This is because the drum level boiler safe,stable operation is an important indicator to ensure that the change of control of drum water level within the normal range,is of great significance for the safe operation of the entire boiler system.Nowadays,the drum level control of most of the traditional PID control method,according to the mathematical model of controlled object.However,in the actual production process,the drum level system nonlinear characteristics of the delay,uncertainty,the precise mathematical model is difficult to establish.This design on the dynamic characteristics of the drum level control law is analyzed using a three-impulse control scheme of the drum level.In the aspects of control algorithm,the use of a fuzzy control,fuzzy control does not need to know to was charged with the object an accurate model,and only need to the data of the experience of and operation of the operating personnel,good robustness and.Ideally suited for the more difficult to obtain the mathematical model,the dynamic characteristics is not easy to grasp the object changes are significant.In particular,is very suitable for nonlinear time-varying delay system control.The light of the actual needs of for the control system,design the controller in in order to with a 8051 one-chip as a the core of the.To regulate the drum water level changes in the size of the water flow,water supply purposes,a substantial increase in the level of automation equipment.