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Related Experiment Videos

Analysis of control interval for foundation fieldbus-based control systems.

Yanbin Pang1, Shuang-Hua Yang, Hirokazu Nishitani

  • 1School of Information Science & Technology, Beijing University of Chemical Technology, China.

ISA Transactions
|July 22, 2006
PubMed
Summary

Optimizing function block configuration in Fieldbus Control Systems (FCS) can shorten control intervals. Execution time and margin time are key factors, more so than communication delays, for increasing control frequency.

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Area of Science:

  • Process Automation
  • Control Systems Engineering
  • Industrial Communication

Background:

  • Fieldbus Control Systems (FCS) are integral to modern process automation.
  • Certain processes require higher control frequencies to maintain stability.
  • Dynamic specifications necessitate efficient temporal characteristics within FCS.

Purpose of the Study:

  • Analyze temporal characteristics of communication and computation in FCS.
  • Investigate function block configuration impacts on control interval.
  • Determine methods to shorten the control interval for improved performance.

Main Methods:

  • Case study utilizing an FCS for a water tank process.
  • Experimental analysis of function block execution times.

Related Experiment Videos

  • Evaluation of communication delays and margin times.
  • Assessment of function block configuration optimization.

    • Main Results:

    • Function block execution time and margin time significantly influence control interval.
    • Communication delays are less dominant than execution and margin times.
    • Optimizing FCS configuration by reducing external links enhances control frequency.

    Conclusions:

    • Temporal characteristics of function blocks are critical for FCS performance.
    • Configuration optimization is a viable strategy for increasing control frequency.
    • FCS can be adapted for processes requiring higher control frequencies.