Improved control of integrating cascade processes with time delays using fractional - order internal model controller with the Smith predictor

Ranjan, Anjana and Mehta, Utkal V. (2023) Improved control of integrating cascade processes with time delays using fractional - order internal model controller with the Smith predictor. Proceedings of the Institution of Mechanical Engineers Part I-Journal of Systems and Control Engineering, NA . NA. ISSN 0959-6518

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Abstract

This article proposes an enhanced control of integrating cascade processes. The importance of the scheme shows by controlling a double integrating process with time delay under significant parametric uncertainties and load disturbances. A novel design is proposed based on the Smith predictor principle and uses a fractional-order internal model controller in the outer loop. The required fractional-order tuning parameter follows the desired gain and phase margins. At the same time, another tuning parameter, such as the fractional filter’s time constant, is calculated from the desired performance constraint. Numerical analysis and comparison are performed to showcase the feature of the hybrid structure. The simulation results show that the fractional-order internal model controller–based scheme provides enhanced tracking and faster regulation capabilities and works well under nominal and parameter uncertainty conditions.

Item Type:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > Robotics and Automation
Divisions:	School of Information Technology, Engineering, Mathematics and Physics (STEMP)
Depositing User:	Utkal Mehta
Date Deposited:	25 Jul 2023 03:27
Last Modified:	25 Jul 2023 03:27
URI:	https://repository.usp.ac.fj/id/eprint/14090

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