Event-Based PI Plus Feedforward Control Strategies for a Distributed Solar Collector Field

This brief deals with the application of an event-based proportional-integral (PI) plus feedforward control strategy to a distributed solar collector field. In particular, a symmetric send-on-delta strategy is considered and an event-based feedforward action to compensate for the disturbance represented by changes in the solar radiation is added to the PI control law. Furthermore, we propose a simple strategy, based on the describing function technique, to estimate the model parameters for tuning the controller. The obtained experimental results show that the proposed control strategy permits to obtain a very significant reduction of the events with only a slight decrement of the control performance.

[1]  W. P. M. H. Heemels,et al.  Analysis of event-driven controllers for linear systems , 2008, Int. J. Control.

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

[3]  David E. Culler,et al.  Telos: enabling ultra-low power wireless research , 2005, IPSN 2005. Fourth International Symposium on Information Processing in Sensor Networks, 2005..

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

[5]  Karl Johan Åström,et al.  Event Based Control , 2008 .

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

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

[8]  Arthur Gelb,et al.  Multiple-Input Describing Functions and Nonlinear System Design , 1968 .

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

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

[11]  Manuel Berenguel,et al.  A survey on control schemes for distributed solar collector fields. Part I: Modeling and basic control approaches , 2007 .

[12]  Marcelino Sánchez,et al.  PSA Solar furnace: A facility for testing PV cells under concentrated solar radiation , 2006 .

[13]  João M. Lemos,et al.  An adaptive temperature control law for a solar furnace , 2008, MED 2008.

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

[15]  Manuel Berenguel,et al.  Constrained Temperature Control of a Solar Furnace , 2012, IEEE Transactions on Control Systems Technology.

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

[17]  Manuel Berenguel,et al.  A survey on control schemes for distributed solar collector fields. Part II: Advanced control approaches , 2007 .

[18]  Volodymyr Vasyutynskyy,et al.  Event-based control: Overview and generic model , 2010, 2010 IEEE International Workshop on Factory Communication Systems Proceedings.

[19]  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).

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