A new two degree-of-freedom event-based PI control strategy

In this paper, a complete event-based two-degree-of-freedom Proportional-Integral controller is presented. The architecture of the control system is based on two decoupled Proportional-Integral controllers, one for the set-point following and the other one for the load disturbance rejection task. The distinctive feature of the proposed approach is that, by assuming a first-order-plus-dead-time model of the process, the two controllers have the same parameters and the reference tracking performance is improved by suitably modifying the reference signal applied to the set-point following controller. Illustrative examples of the technique are given, including a comparison with an event-based one-degree-of-freedom Proportional-Integral controller.

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

[2]  Antonio Visioli,et al.  Practical PID Control , 2006 .

[3]  Antonio Visioli.  A new design for a PID plus feedforward controller , 2004 .

[4]  Mario Di Francesco,et al.  Energy conservation in wireless sensor networks: A survey , 2009, Ad Hoc Networks.

[5]  V. Vasyutynskyy,et al.  Limit cycles in PI control loops with absolute deadband sampling , 2008, 2008 18th International Crimean Conference - Microwave & Telecommunication Technology.

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

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

[8]  Volodymyr Vasyutynskyy,et al.  Simple PID control algorithm adapted to deadband sampling , 2007, 2007 IEEE Conference on Emerging Technologies and Factory Automation (EFTA 2007).

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

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