International Journal of Applied Power Engineering (IJAPE)
Vol 15, No 2: June 2026

Self tuning of output scaling factor for type-2 interval fuzzy controllers

Mouna Ghanai (Batna 2 University - Mostefa Benboulaid)
Kheireddine Chafaa (Batna 2 University - Mostefa Benboulaid)
Ali Medjghou (University Center of Tipaza)
Nadia Bounouara (Batna 2 University - Mostefa Benboulaid)



Article Info

Publish Date
01 Jun 2026

Abstract

In this study presents a self-tuning type-2 fuzzy logic controller framework, which operates on the principle of continuously adjusting the controller structure by modifying the controller gain (scaling factor) as a function of the error and its rate of change, in order to achieve optimal control performance. The proposed structure is both simple and robust, with real-time gain adaptation facilitated by two type-2 fuzzy systems; the first one containing the rules of control task for speed regulation, and the second one containing the rules for the adaptation of the scaling factor. Both systems have the same inputs error and its variation. This work specifically focuses on tuning the output scaling factor, which is considered equivalent to the controller gain. The effectiveness of the proposed approach is evaluated through its application to the control of an induction machine, a system known for its complexity and strong nonlinearity. Simulation results demonstrate that the fuzzy controller significantly enhances performance, even under challenging operating conditions such as low-speed regimes.

Copyrights © 2026






Journal Info

Abbrev

IJAPE

Publisher

Subject

Electrical & Electronics Engineering

Description

International Journal of Applied Power Engineering (IJAPE) focuses on the applied works in the areas of power generation, transmission and distribution, sustainable energy, applications of power control in large power systems, etc. The main objective of IJAPE is to bring out the latest practices in ...