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Mathematical Problems in Engineering
Volume 2018 (2018), Article ID 5478781, 9 pages
Research Article

Fuzzy Fractional-Order PID Controller for Fractional Model of Pneumatic Pressure System

1Electrical Engineering Department, College of Engineering at Wadi Addawasir, Prince Sattam Bin Abdulaziz University, Wadi Addawasir, Saudi Arabia
2Systems Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
3Department of Mathematics, College of Arts & Science at Wadi Addawasir, Prince Sattam Bin Abdulaziz University, AlKharj, Saudi Arabia

Correspondence should be addressed to K. S. Nisar

Received 22 June 2017; Revised 8 January 2018; Accepted 30 January 2018; Published 28 February 2018

Academic Editor: Hung-Yuan Chung

Copyright © 2018 M. Al-Dhaifallah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This article presents a fuzzy fractional-order PID (FFOPID) controller scheme for a pneumatic pressure regulating system. The industrial pneumatic pressure systems are having strong dynamic and nonlinearity characteristics; further, these systems come across frequent load variations and external disturbances. Hence, for the smooth and trouble-free operation of the industrial pressure system, an effective control mechanism could be adopted. The objective of this work is to design an intelligent fuzzy-based fractional-order PID control scheme to ensure a robust performance with respect to load variation and external disturbances. A novel model of a pilot pressure regulating system is developed to validate the effectiveness of the proposed control scheme. Simulation studies are carried out in a delayed nonlinear pressure regulating system under different operating conditions using fractional-order PID (FOPID) controller with fuzzy online gain tuning mechanism. The results demonstrate the usefulness of the proposed strategy and confirm the performance improvement for the pneumatic pressure system. To highlight the advantages of the proposed scheme a comparative study with conventional PID and FOPID control schemes is made.