Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
권호 표지
DOI QR코드

DOI QR Code

Bluetooth Synchronous Connection Oriented Link Usage in Networked Control Systems

블루투스 Synchronous Connection Oriented Link를 사용한 네트워크 제어 시스템

  • Received : 2012.05.15
  • Accepted : 2012.06.30
  • Published : 2012.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper the usage of Bluetooth in networked control systems is described. ACL links and commonly used serial port profile built on top of ACL links are analyzed and their problems such as unpredictable latency are discovered. SCO link packet scheduling, latency estimation and setup procedure are examined. SCO link is suggested as proper link for NCS, due to its low latency and low variance. Smith predictor use for latency compensation is described and its impact on control performance is estimated. A number of experiments on DC motor position control are performed and control performance of system utilizing SCO link with and without Smith predictor is proved to be higher than control performance of system utilizing ACL link.

Keywords

References

  1. D. Hristu-Varsakelis and W. S. Levine, Handbook of Networked and Embedded Control Systems, Springer Verilag, 2005.
  2. P. Ling, "Mixed signals - ZigBee aims to be a standard for industrial low-power radio, but we might never see full compatibility between modules that support it, Electronics Systems and Software, vol. 5, no. 1, pp. 34-37, Feb.-Mar. 2007. https://doi.org/10.1049/ess:20070106
  3. K. H. Seol and Y. S. Lim, "Implementation of novel application using Bluetooth," Proc. of the SICE 2004 Annual Conference, vol. 2, pp. 1617-1620, 4-6 Aug. 2004.
  4. F. Mitome and K. Ohnishi, "Bilateral control with bluetooth and its evaluation," Proc. of the 4th International Conference on HSI (Human System Interactions), pp. 346-351, 19-21 May 2011.
  5. U. Bilstrup and P.-A. Wiberg, "Bluetooth in industrial environment," Proc. of the IEEE International Workshop on Communication Systems, pp. 239-246, 2000.
  6. J. Nillson, "Real-time control systems with delays," Ph.D. thesis, Department of Automatic Control. Lund Institute of Technology, 1998.
  7. Bluetooth SIG, Specification of the Bluetooth System v1.1, 2001.
  8. L. Cheng and Z. Wang, "Research on delay of data streams in internet-based NCS," Proc. of the 8th World Congress on Intelligent Control and Automation (WCICA), pp. 1846-1851, 7-9 July 2010.
  9. B. Kristiansson, "Robust PI and PID controllers including Smith predictor structure," Proc. of the American Control Conference, vol. 3, pp. 2197-2002, 2001.
  10. C. C. Hang, "Refinements of the Ziegler-Nichols tuning formula," Control Theory and Applications, IEE Proceedings D, vol. 138, no. 2, pp. 111-118, Mar. 1991. https://doi.org/10.1049/ip-d.1991.0015

Cited by

  1. An Integrated Management System of the Educational Equipments and Contents of Secondary School vol.16, pp.2, 2015, https://doi.org/10.9728/dcs.2015.16.2.197