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All Journal IAES International Journal of Artificial Intelligence (IJ-AI)
Reza Ghasemi
department of electrical engineering- damavand- Islamic Azad University
Computer Science & IT Engineering

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Designing Observer Based Variable Structure Controller for Large Scale Nonlinear Systems Reza Ghasemi
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 2, No 3: September 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.463 KB)

Abstract

Designing observer based decentralized fuzzy adaptive controller is discussed for a class of large scale non-canonical nonlinear systems with unknown functions of the subsystems in this paper. The On-line adaptation of the controller and the observer parameters, boundedness of the output and the observer errors, robustness against external disturbance are the advantages of the proposed method. The simulation results show the promising performance of the proposed method.DOI: http://dx.doi.org/10.11591/ij-ai.v2i3.2025
Stable intelligent Controller Design for Generalized Flow Shop Systems Reza Ghasemi
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 2, No 2: June 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.905 KB)

Abstract

Designing a stable fuzzy controller for a class of generalized flow shop systems is addressed in this paper based on max-plus algebra. The proposed controller is multi-input single-output. Robustness against uncertainties in the service times, stabilizing the closed loop system and withholding the blocking effect are the main properties of the proposed controller. An illustrative example is given to show the effectiveness of the proposed method.DOI: http://dx.doi.org/10.11591/ij-ai.v2i2.1325
Designing Intelligent Variable Structure Controller for HIV Infection Reza Ghasemi
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 2, No 2: June 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.993 KB)

Abstract

Fuzzy adaptive controller is developed for HIV infection in which functions of the system are unknown. A non-affine nonlinear system is considered for the HIV infection dynamic model. The merits of the proposed method is as the stability of the closed-loop system (HIV + Controller), the convergence of the infected cells concentration rates to zero and the boundedness of the internal signal and infected cell concentration. The simulation results show the promising performance of the proposed method.DOI: http://dx.doi.org/10.11591/ij-ai.v2i2.2024
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