Overview

Original Research

MODEL ORDER REDUCTION AND EVALUATION OF A MODIFIED DIRECT SYNTHESIS PROPORTIONAL-INTEGRAL- DERIVATIVE (PID) CONTROLLER WITH SENSITIVITY OPTIMIZATION

PRINCEWILL NEMIBO JOSIAH 1, IPEGHAN JONATHAN OTARAKU 2, and BENSON OSA EVBUOMWAN 3.

Vol 18, No 05 ( 2023 )   |  DOI: 10.17605/OSF.IO/XGKU4   |   Author Affiliation: World Bank Africa Centre of Excellence, Centre for Oilfield Chemicals Research, University of Port Harcourt, Port-Harcourt, Nigeria 1; Department of Chemical Engineering, University of Port Harcourt, Port Harcourt, Nigeria 2,3.   |   Licensing: CC 4.0   |   Pg no: 1628-1638   |   Published on: 29-05-2023

Abstract

In this paper, the challenge with subjectivities in tuning the closed loop time constant has been addressed and presented. The paper presents a PID design method that guarantees both servo and regulatory action on the controlled plan following sensitivity function optimization with gain margin and phase margin constraints. Research design consists of three phases namely: Model order reduction, development of a novel method for PID controller design and validation of the method using the Wood and Berry distillation column as the process. Results show that the reduced order effective open loop transfer functions are suitable for controller design. Simulation study of servo and regulatory response performance revealed the superiority of the new controller over other reference controllers, using the integral average error as an index.

Keywords

Regulatory, Servo, Sensitivity Function, Gain Margin, PID