Fig. 1. Principle of the temperature control system of the extinction tube

Fig. 2. Model identification experimental device diagram of matting cylinder temperature control system

Fig. 3. Comparison of model response from experiment and recognition

Fig. 4. Schematic of the Smith predictor

Fig. 5. Block diagram of ADRC-Smith controller

Fig. 6. Response curves of different controllers when the model is accurate

Fig. 7. Response curves of different controllers when the model is offset

Fig. 8. Matting cylinder temperature control system interface

Fig. 9. (a) Tracking environmental temperature curve of ADRC-Smith; (b) Tracking environmental temperature curve of PID-Smith

Fig. 10. ADRC-Smith controller response curve under heat source interference