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Improved PI-PD control design using predictive functional optimization for temperature model of a fluidized catalytic

Hongbo Zou1, Haisheng Li1

  • 1Key Lab for IOT and Information Fusion Technology of Zhejiang, Hangzhou Dianzi University, Hangzhou 310018, PR China.

ISA Transactions
|December 13, 2016
PubMed
Summary

A novel PI-PD control method using predictive functional control (PFC) optimization enhances industrial temperature regulation. This approach effectively manages time delays, outperforming traditional PID and PI-PD controllers in crude oil preheating applications.

Keywords:
PI-PD controlPID controlPredictive functional controlPreheated temperatureTime delay

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Area of Science:

  • Control Engineering
  • Chemical Engineering
  • Process Control

Background:

  • Proportional-Integral-Derivative (PID) control is prevalent in industry due to its simplicity.
  • PID control performance degrades significantly in systems with large time delays.
  • Existing Proportional-Integral-Proportional-Derivative (PI-PD) controllers offer improved performance but suffer from complex tuning.

Purpose of the Study:

  • To develop a new PI-PD control strategy optimized using Predictive Functional Control (PFC) principles.
  • To address the limitations of traditional PID and PI-PD controllers in handling time-delay systems.
  • To improve the control performance for industrial processes with significant time delays.

Main Methods:

  • A novel PI-PD controller design integrating PFC optimization techniques.
  • Leveraging PFC's inherent capability to manage time delays within the PI-PD structure.
  • Experimental validation on the preheated temperature control of crude oil in a fluidized catalytic cracking unit.

Main Results:

  • The proposed PFC-optimized PI-PD controller demonstrated superior performance compared to standard PID control.
  • The new controller also outperformed conventional PI-PD control methods.
  • Effective management of time delays was observed in the crude oil preheating application.

Conclusions:

  • The PFC-optimized PI-PD control offers an effective solution for systems with time delays.
  • This method provides enhanced control performance over traditional PID and PI-PD controllers.
  • The proposed approach is suitable for industrial applications like crude oil preheating.