Engineering and Technology Journal

Servo and Regulatory Response of an Industrial Fluid Catalytic Cracking (FCC) Unit under Fuzzy Logic Supervisory Control

Princewill N. Josiah; Ipeghan J. Otaraku; Benson O. Evbuomwan

Volume 41, Issue 9 , September 2023, , Page 1139-1151

https://doi.org/10.30684/etj.2023.139485.1432

Abstract

A self-tuning hierarchical controller in which a Fuzzy logic controller supervises the control actions of a conventional PID has been proposed, implemented and presented in this paper. ... Read More ... A self-tuning hierarchical controller in which a Fuzzy logic controller supervises the control actions of a conventional PID has been proposed, implemented and presented in this paper. The controller has been applied to a control study of Fluid Catalytic Cracking unit (FCCU) riser temperature, and regenerator temperature respectively. Comparison between the performance of the proposed Fuzzy-PID controller and the conventional PID was made in simulation studies of regulatory and servo performances of the two controller types. Six performance measures: Percent overshoot (OS), settling time (ST), integral absolute error (IAE), integral square error (ISE), integral time absolute error (ITAE) and integral time square error (ITSE) were employed as the tools for performance comparison between the conventional PID and the Fuzzy-PID controller. For the tracking of riser temperature with a set point at 524oC, the performance indicators under PID control gave the following results overshoot (14.5%); settling time (40 seconds) Integral absolute error (8.246), integral square error (3.3); integral time absolute error(1762);integral time square error (43.77) while for the same indicators under Fuzzy-PID control the following values: overshoot (3.3%); settling time (40 seconds) ;Integral absolute error (8.811); integral square error (14.5); integral time absolute error(280),;integral time square error (31.11) .The results allude to the superiority of the fuzzy-PID scheme over the PID scheme in tracking the optimal set point of riser temperature. More so, for tracking the regenerator set point temperature of 746oC, comparative study of step response under the two schemes gave the following results in six performance indicators: overshoot (PID (12.6%) / Fuzzy-PID (6%)); settling time (PID (80 seconds) / Fuzzy-PID (20seconds)); Integral absolute error (PID (14.29) / Fuzzy-PID (8.63)); integral square error (PID(6.713). Fuzzy-PID (4.506)); integral time absolute error(PID(2858)/Fuzzy-PID(305.9)), integral time square error (PID(77.55)/Fuzzy-PID(33.05)) . Moreover, the fuzzy-PID controller also showed superior performance over the conventional PID controller in terms disturbance rejection (regulatory response) of both riser and regenerator temperature. The results from this study suggest that the application of fuzzy-PID scheme to temperature control offers good promise of improved fluid catalytic cracking unit (FCCU) operations.

Tuning of a PID Controller by Bacterial Foraging Algorithm for Position Control of DC Servo Motor

Manal H. Jasim

Volume 36, 3A , March 2018, , Page 287-294

https://doi.org/10.30684/etj.36.3A.7

Abstract

Controlling the position of Direct Current servo motor is the first aim of this paper, by Bacterial Foraging Algorithm (BFA), the best Proportional – Integral - Derivative (PID) ... Read More ...

An Investigation in to the Performances of Fuzzy PD Like and PID-PSO Controllers for Internal Combustion Engine

Talal A. Abdul Wahab; Sabah A. Nassif; Basma Abdullah Abbas

Volume 33, 7A , July 2015, , Page 1619-1635

https://doi.org/10.30684/etj.33.7A.6

Abstract

The Controller design is considered as the important part in the IC engines, to get a stable operation which is the main objective for engine generator set, through controlling the ... Read More ...

Comparison Between Adaptive Fuzzy and PID Fuzzy Automotive Engine Controllers in Idle Speed Mode

Mohammed Y. Hassan; Saba T. Al -Wais

Volume 28, Issue 23 , November 2010, , Page 6785-6800

https://doi.org/10.30684/etj.28.23.14

Abstract

Automatic control of automotive engines provides benefits in the enginesperformance like emission reduction, fuel economy and drivability. To ensure betterachievement of these requirements ... Read More ...

Real Time Digital Speed Control System for DC Servo Motor Using LabVIEW 8.5 Package

Areej Alaa Hassen

Volume 28, Issue 6 , March 2010, , Page 1169-1185

https://doi.org/10.30684/etj.28.6.11

Abstract

This paper describes the design and implementation of a personal computerbased closed loop DC motor speed control system Using LabVIEW 8.5 Packagefor data manipulation and interface ... Read More ...

Keywords = PID

Servo and Regulatory Response of an Industrial Fluid Catalytic Cracking (FCC) Unit under Fuzzy Logic Supervisory Control

Abstract

Tuning of a PID Controller by Bacterial Foraging Algorithm for Position Control of DC Servo Motor

Abstract

An Investigation in to the Performances of Fuzzy PD Like and PID-PSO Controllers for Internal Combustion Engine

Abstract

Comparison Between Adaptive Fuzzy and PID Fuzzy Automotive Engine Controllers in Idle Speed Mode

Abstract

Real Time Digital Speed Control System for DC Servo Motor Using LabVIEW 8.5 Package

Abstract