Model-Driven Active Disturbance Rejection Control - Analysis and Application to Wet Desulfurization Process of Power Plant

Le résumé fourni par la source

Addressing the issue of poor regulation performance of conventional PID control in wet flue gas desulfurization (WFGD) systems due to large inertia and large time-delay, this paper proposes a model-driven active disturbance rejection control (MADRC) strategy. Firstly, based on the stable second-order plus time delay (SOPTD) process, the model information of the controlled plant is divided into two key parts: one part is integrated into the state observer to construct the model-driven extended state observer (MESO), while the other part is applied to the input of the state observer in the form of a first-order inertial delay, thereby optimizing the design of the active disturbance rejection controller (ADRC). Stability analysis of the system is then conducted using the dual-trajectory method. Subsequently, the tuning strategy of MADRC controller parameters based on loop shaping of closed loop system is proposed. The final simulation results demonstrate that the proposed strategy exhibits superior control quality in terms of track performance at set values, disturbance inhibition ability, and robustness compared to SIMC-PID controller.

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