An automatic tuning procedure for an event-based PI controller

In this paper we propose an automatic tuning procedure for an event-based PI control scheme. In particular, the well-known relay feedback methodology for a standard PI controller is extended to a symmetrical send-on-delta PI controller. In this context, the overall event-based procedure consists of two relay feedback experiments (with a PI controller, possibly roughly tuned, already in place) in order to estimate the parameters of a first-order-plus-dead-time transfer function. Then, based on the process parameters, a tuning rule can be suitably applied. Simulation results demonstrate the effectiveness of the methodology.

[1]  Karl-Erik Årzén,et al.  A simple event-based PID controller , 1999 .

[2]  Ramon Vilanova,et al.  PID Control in the Third Millennium , 2012 .

[3]  Marek Miskowicz,et al.  Send-On-Delta Concept: An Event-Based Data Reporting Strategy , 2006, Sensors (Basel, Switzerland).

[4]  Sigurd Skogestad,et al.  Probably the best simple PID tuning rules in the world , 2001 .

[5]  A. Visioli,et al.  A two-degree-of-freedom PI controller based on events , 2011 .

[6]  K. Åström,et al.  Revisiting The Ziegler‐Nichols Tuning Rules For Pi Control , 2002 .

[7]  A. Visioli,et al.  Characterization of symmetric send-on-delta PI controllers , 2012 .

[8]  Francisco Rodríguez,et al.  Event-based control and wireless sensor network for greenhouse diurnal temperature control: A simulated case study , 2008, 2008 IEEE International Conference on Emerging Technologies and Factory Automation.

[9]  James Moyne,et al.  Using deadbands to reduce communication in networked control systems , 2002, Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301).

[10]  Karl Henrik Johansson,et al.  Event-triggered strategies for industrial control over wireless networks , 2008, WICON 2008.

[11]  Tore Hägglund,et al.  Advanced PID Control , 2005 .

[12]  Karl Johan Åström,et al.  Oscillations in Systems with Relay Feedback , 1993 .

[13]  José Sánchez Moreno,et al.  On the presence of equilibrium points in PI control systems with send-on-delta sampling , 2011, IEEE Conference on Decision and Control and European Control Conference.

[14]  Aidan O'Dwyer,et al.  Handbook of PI and PID controller tuning rules , 2003 .

[15]  V. Vasyutynskyy,et al.  Towards Comparison of Deadband Sampling Types , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[16]  M. Beschi,et al.  Tuning rules for event-based SSOD-PI controllers , 2012, 2012 20th Mediterranean Conference on Control & Automation (MED).

[17]  J.H. Braslavsky,et al.  Level Crossing Sampling in Feedback Stabilization under Data-Rate Constraints , 2006, Proceedings of the 45th IEEE Conference on Decision and Control.

[18]  Cheng-Ching Yu,et al.  Autotuning of PID Controllers: Relay Feedback Approach , 1999 .

[19]  Terrence L. Blevins.  PID Advances in Industrial Control , 2012 .

[20]  Antonio Visioli,et al.  Comparative study of event-based control strategies: An experimental approach on a simple tank , 2009, 2009 European Control Conference (ECC).