Abstract
The fluidized bed combustor (FBC) boiler faces many control challenges such as high-order dynamics and strong nonlinearity. A hybrid control structure combining active disturbance rejection control (ADRC) and Bode ideal cut-off (BICO) is proposed to handle with these control difficulties and speed up the output responses. An empirical tuning procedure is summarized for the hybrid control structure. Simulation results show that the hybrid control structure has the best tracking performance compared with other control strategies. In addition, the hybrid control structure can obtain the satisfactory disturbance rejection performance when the FBC system has the coal quality variation or input disturbances. The superiority of the hybrid control structure can ensure the satisfactory control performance and shows a great potential in industrial applications.
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