Tuning a space–time scalable PI controller using thermal parameters

The paper outlines the successful empirical design and validation of a space–time PI controller based on study of the controlled variable output as function of time and space. The developed control was implemented on two heat exchanger systems (falling film evaporator and milk pasteurizer). The strategy required adding a new term over the classical PI controller, such that a new parameter should be tuned. Measurements made on commercial installations have confirmed the validity of the new controller.

[1]  Drago Matko,et al.  Neuro-fuzzy Model-based Control , 1998, J. Intell. Robotic Syst..

[2]  Hsueh-Chia Chang,et al.  Accelerated disturbance damping of an unknown distributed system by nonlinear feedback , 1992 .

[3]  R. W. Brockett,et al.  Asymptotic stability and feedback stabilization , 1982 .

[4]  M. Nazmul Karim,et al.  New methodology for identification and control of plants with static input or output nonlinearities , 1996 .

[5]  W. Ray,et al.  Identification and control of distributed parameter systems by means of the singular value decomposition , 1995 .

[6]  S. Shvartsman,et al.  Nonlinear model reduction for control of distributed systems: A computer-assisted study , 1998 .

[7]  Rodney L. McClain,et al.  Heat Rate Predictions in Humid Air-Water Heat Exchangers Using Correlations and Neural Networks , 2001 .

[8]  A. Palazoglu,et al.  Sliding Mode Control of Nonlinear Distributed Parameter Chemical Processes , 1995 .

[9]  Mihir Sen,et al.  Adaptive neurocontrol of heat exchangers , 2001 .

[10]  C. Riverol,et al.  Use of Neural Networks as a Tuning Method for an Adaptive PID: Application in a Heat Exchanger , 2000 .

[11]  I. Lasiecka.  Control of systems governed by partial differential equations: a historical perspective , 1995, Proceedings of 1995 34th IEEE Conference on Decision and Control.

[12]  Sujoy Kumar Saha,et al.  Thermohydraulic Study of Laminar Swirl Flow Through a Circular Tube Fitted With Twisted Tapes , 2001 .

[13]  W. Harmon Ray,et al.  Some recent applications of distributed parameter systems theory - A survey , 1978, Autom..

[14]  Rodney L. McClain,et al.  Neural network analysis of fin-tube refrigerating heat exchanger with limited experimental data , 2001 .

[15]  C. Quek,et al.  Real-time integrated process supervision , 2000 .

[16]  Ioannis G. Kevrekidis,et al.  Model identification of a spatiotemporally varying catalytic reaction , 1993 .

[17]  P. Christofides,et al.  Dynamic optimization of dissipative PDE systems using nonlinear order reduction , 2002 .

[18]  P. Daoutidis,et al.  Nonlinear control of diffusion-convection-reaction processes , 1996 .

[19]  Mihir Sen,et al.  Simulation of heat exchanger performance by artificial neural networks , 1999 .