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A modular fuzzy control approach for two-wheeled wheelchair

Ahmad, Salmiah and Siddique, Nazmul H. and Tokhi, M. Osman (2011) A modular fuzzy control approach for two-wheeled wheelchair. Journal of Intelligent & Robotic Systems, 64 (3). pp. 401-426. ISSN 0921-0296

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Wheelchairs on two wheels are becoming essential part of life for disabled persons. But designing control strategies for such wheelchairs is a challenging task due to the fact that they are highly nonlinear and unstable systems. The subtle design of the system mimics a double inverted pendulum with three actuators, one for each wheel, and one for chair position. The system starts to work with lifting the front wheels (casters) to the upright position and further with stabilizing in the upright position. The challenge resides in the design and implementation of suitable control strategies for the two-wheeled wheelchair so as to perform comparably similar to a normal four-wheeled wheelchair. A two-level modular fuzzy logic controller is proposed in this paper. A model of the standard wheelchair is also developed as a test and verification platform using Visual Nastran software integrated with Matlab.

Item Type: Article (Journal)
Additional Information: 4113/1569
Uncontrolled Keywords: Wheelchair dynamics · Double inverted pendulum · Fuzzy logic control · Nonlinear system · Upright stability
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User: Ir. Dr. Salmiah Ahmad
Date Deposited: 05 Sep 2011 13:00
Last Modified: 27 Feb 2012 10:55
URI: http://irep.iium.edu.my/id/eprint/1569

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