According to the basic mechanism of the supercharged boiler superheater, a superheater simulation model was established. The simulation about a whole superheater system including the flue gas,steam and tube wall was conducted according to the simulation model.Therefore, the internal working laws of superheater system are revealed by the simulation results.
The supercharged boiler drum level as the controlled object, a high-precision simulation model was established considering the impacts of the distribution of the metal wall condensation inside the drum on the water level changes. Based on simulation model, a simulation program for pressurized boiler was prepared. The simulation results show that the performance of the state fuzzy controller is better than the PID controller.
Based on the application of the fuzzy theory,we designed a state level fuzzy controller for the marine steam power system. Compared with the level PID controller and a single-stage cascade PID level controller about disturbance response, the state level controller is more suitable for marine supercharged boiler level control because of its Smaller overshoot, shorter settling time, and other characteristics.
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