Reactor Temperature Compound Control Strategy Based on Disturbance Observer

A Smith-Dynamic Matrix Control(DMC)-PID(SDP)control method based on disturbance observer is devised for the temperature regulation of a reactor with high lag and nonlinear features. This results in poor system stability and low control precision. In the first place, because the reactor is prone to receiving external disturbances generated by external changes, which ultimately leads to a significant impact on the temperature inside the kettle, introducing the PID,DMC-PID control algorithm and Smith predictor combined with the compensation of large temperature hysteresis, the model structure of series control system, and the design of SDP series control to reduce the adjustment time and overshoot of the system. In addition, a disturbance observer that considers pure hysteresis linkages has been constructed for the reactor system that is impacted by uncertainty. In conclusion, the findings of the experiments indicate that the suggested control technique possesses strong stability and anti-disturbance performance.