The boiler control is the thermal power plant most basic industrial control. The cascade-three parameters water level control system includes steam drum water level, steam flow and water supply, adjust water supply for the opening, Fuzzy adaptive control by seeking the three parameters of PID controller and the relationship between e and ec, make the best adjustment for PID parameters on the steam drum water level system automatically. The simulation results show the system is more stable, can meet the load, volatile, and frequent fluctuations of water supply pressure, and improve the quality control of the internal and external disturbances.
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