Abstract
Boiler drum water level control system is hard to develop practical mathematical model and has nonlinear, stable and delay characteristics. The traditional boiler drum water level control often uses three impulse PID control method. The existing problem of ordinary PID control strategy is: once good parameter setting, it is hard to adapt to the change of the operation of the system dynamic greatly. In order to solve the problems of the above, the research object of the subject is a certain 120 t/h boiler steam capacity, the boiler drum water level control system is designed, and the control strategies are studied. In order to obtain better contrast, the ordinary PID controller and Fuzzy controller are designed, and the control strategies of the simulation are analyzed.
Highlights
Boiler drum water level control is very important in boiler automatic control system; the control effect is directly affecting the quality of the boiler water
Boiler drum water level control plays an important role in quality and reducing energy consumption and safety production, it is one of the important indicators of the normal operation of boiler
Fuzzy control can adapt to the nonlinear boiler drum water level control system and uncertain characteristics, comparing with the traditional
Summary
Boiler drum water level control is very important in boiler automatic control system; the control effect is directly affecting the quality of the boiler water. Boiler drum water level control plays an important role in quality and reducing energy consumption and safety production, it is one of the important indicators of the normal operation of boiler. Improve the level of boiler drum water level automatic control is urgent problem, to reduce the labor intensity of operators, has the vital significance to the safe operation of boiler. The traditional PID control principle is simple, easy to implement, it has been widely used in boiler drum level, it has certain limitations, there are so large overshoot that can not achieve precise control of nonlinear systems. Fuzzy control can adapt to the nonlinear boiler drum water level control system and uncertain characteristics, comparing with the traditional. In order to obtain better contrast, the ordinary PID controller and Fuzzy controller are designed, and the control strategies of the simulation are analyzed [1]
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