TY - GEN
T1 - Model-Free Predictive Control for Nonlinear Processes with Variable Delay
AU - Espin, Jorge
AU - Camacho, Oscar
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper presents a Model-Free Predictive Control (MFPC) strategy for regulating a nonlinear mixing tank process with time-varying delay. Unlike traditional Model Predictive Control (MPC), MFPC eliminates the need for an explicit system model by leveraging an ultra-local model and real-time optimization. The approach dynamically compensates for disturbances, delays, and setpoint changes while adhering to operational constraints. Simulation results demonstrate that MFPC outperforms conventional PID and intelligent PID (iPID) controllers, achieving superior performance metrics such as reduced overshoot, smoother control actions, and lower RMSE, IAE, and ITAE values. Notably, MFPC avoids the oscillatory behavior and actuator stress observed in PID-based methods, proving its effectiveness for nonlinear processes with variable delay.
AB - This paper presents a Model-Free Predictive Control (MFPC) strategy for regulating a nonlinear mixing tank process with time-varying delay. Unlike traditional Model Predictive Control (MPC), MFPC eliminates the need for an explicit system model by leveraging an ultra-local model and real-time optimization. The approach dynamically compensates for disturbances, delays, and setpoint changes while adhering to operational constraints. Simulation results demonstrate that MFPC outperforms conventional PID and intelligent PID (iPID) controllers, achieving superior performance metrics such as reduced overshoot, smoother control actions, and lower RMSE, IAE, and ITAE values. Notably, MFPC avoids the oscillatory behavior and actuator stress observed in PID-based methods, proving its effectiveness for nonlinear processes with variable delay.
KW - Model predictive control
KW - Model-free control
KW - nonlinear processes
KW - ultra-local model
KW - variable delay
UR - https://www.scopus.com/pages/publications/105037996853
U2 - 10.1109/CHILECON66915.2025.11476428
DO - 10.1109/CHILECON66915.2025.11476428
M3 - Contribución a la conferencia
AN - SCOPUS:105037996853
T3 - Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon
BT - 2025 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2025
A2 - Lefranc, Gaston
A2 - Cubillos, Claudio
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2025
Y2 - 28 October 2025 through 30 October 2025
ER -