Feedback Scheduling of Priority-Driven Control Networks

With traditional open-loop scheduling of network resources, the quality-of-control (QoC) of networked control systems (NCSs) may degrade significantly in the presence of limited bandwidth and variable workload. The goal of this work is to maximize the overall QoC of NCSs through dynamically allocating available network bandwidth. Based on codesign of control and scheduling, an integrated feedback scheduler is developed to enable flexible QoC management in dynamic environments. It encompasses a cascaded feedback scheduling module for sampling period adjustment and a direct feedback scheduling module for priority modification. The inherent characteristics of priority-driven control networks make it feasible to implement the proposed feedback scheduler in real-world systems. Extensive simulations show that the proposed approach leads to significant QoC improvement over the traditional open-loop scheduling scheme under both underloaded and overloaded network conditions.

[1]  João Pedro Hespanha,et al.  A Survey of Recent Results in Networked Control Systems , 2007, Proceedings of the IEEE.

[2]  Tianlong Gu,et al.  Queuing Packets in Communication Networks for Networked Control Systems , 2006, 2006 6th World Congress on Intelligent Control and Automation.

[3]  Zheng Li,et al.  Adaptive Multiple Sampling Rate Scheduling of Real-time Networked Supervisory Control System - Part II , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[4]  Nitaigour-Premchand Mahalik,et al.  Simulation integrated management layer for real-time embedded DCN , 2006, Comput. Stand. Interfaces.

[5]  Colin J. Fidge,et al.  Multifractal Nature of Network Induced Time Delay in Networked Control Systems , 2007 .

[6]  Kevin Wise.  Control in an Information Rich World , 2001 .

[7]  Vincenzo Liberatore,et al.  Decentralized and dynamic bandwidth allocation in networked control systems , 2006, Proceedings 20th IEEE International Parallel & Distributed Processing Symposium.

[8]  Wei Zhang,et al.  Scheduling and feedback co-design for networked control systems , 2002, Proceedings of the 41st IEEE Conference on Decision and Control, 2002..

[9]  C.J.H. Mann,et al.  Control in an Information Rich World , 2004 .

[10]  Feng Xia,et al.  Feedback scheduling of real-time control systems with resource constraints , 2007 .

[11]  J. Silvestre,et al.  An architecture for flexible scheduling in Profibus networks , 2007 .

[12]  Seung Ho Hong,et al.  Bandwidth allocation scheme in CAN protocol , 2000 .

[13]  Lui Sha,et al.  Priority Inheritance Protocols: An Approach to Real-Time Synchronization , 1990, IEEE Trans. Computers.

[14]  Nitaigour-Premchand Mahalik.  Attributes of industrial machine and process control systems , 2006, Int. J. Comput. Appl. Technol..

[15]  Feng Xia,et al.  Control-Scheduling Codesign: A Perspective on Integrating Control and Computing , 2008, ArXiv.

[16]  Jean-Pierre Thomesse,et al.  Fieldbus Technology in Industrial Automation , 2005, Proceedings of the IEEE.

[17]  P. Marti,et al.  A CAN Application Profile for Control Optimization in Networked Embedded Systems , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[18]  David Levy,et al.  Configuring the Worst-Case Communication Delay in Real-Time Networked Control Systems , 2007, ESA.

[19]  P.R. Kumar,et al.  Interrupt-based feedback control over a shared communication medium , 2002, Proceedings of the 41st IEEE Conference on Decision and Control, 2002..

[20]  Youxian Sun,et al.  Feedback based network scheduling of networked control systems , 2005, 2005 International Conference on Control and Automation.

[21]  Youxian Sun,et al.  Control Oriented Direct Feedback Scheduling , 2006 .

[22]  Manel Velasco,et al.  A 10-Year Taxonomy on Prior Work on Sampling Period Selection for Resource-Constrained Real-Time Control Systems , 2007 .

[23]  Karl-Erik Årzén,et al.  Conclusions of the ARTIST2 roadmap on control of computing systems , 2006, SIGBED.

[24]  P. Marti,et al.  A control approach to bandwidth management in networked control systems , 2004, 30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004.

[25]  Sang Hyuk Son,et al.  Feedback control-based dynamic resource management in distributed real-time systems , 2007, J. Syst. Softw..

[26]  P. Marti,et al.  Control loop scheduling paradigm in distributed control systems , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[27]  Dong-Sung Kim,et al.  A scheduling method for network-based control systems , 2002, IEEE Trans. Control. Syst. Technol..

[28]  Nitaigour P. Mahalik,et al.  Fieldbus Technology: Industrial Network Standards for Real-Time Distributed Control , 2003 .

[29]  Wei-Yong Yan,et al.  Stability robustness of networked control systems with respect to packet loss , 2007, Autom..

[30]  Stephen P. Boyd,et al.  Future directions in control in an information-rich world , 2003 .

[31]  Hong Ye,et al.  Scheduling of networked control systems , 2001 .