Inverse dynamics based tuning of a fuzzy logic controller for a single-link flexible manipulator

Renno, Jamil M. (2007) Inverse dynamics based tuning of a fuzzy logic controller for a single-link flexible manipulator. Journal of Vibration and Control, 13, (12), 1741-1759. (doi:10.1177/1077546307076282).


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Since its introduction to engineering applications, fuzzy logic has attracted many researchers because of its simplicity and robustness. Experience with a system is translated into heuristic rules which can be used to control that system. This article proposes a novel method for a generalized inverse dynamics based fuzzy logic controller (FLC) of a single-link flexible manipulator. The deflection of the flexible link was modeled using the assumed modes method. The control action is distributed between two FLCs: A joint angle controller and a tip controller. Each controller produces a torque value. The torque values are summed, and the resulting control action is used to drive the manipulator. A novel method for varying the ranges of the variables of the two controllers as a function of the motion parameters and the inverse dynamics of the system is presented. The relative shapes and distribution of the fuzzy membership sets (with respect to each other) are kept fixed. Simulation results show that joint trajectory tracking is accomplished, and that the residual vibration of the flexible link is suppressed.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1177/1077546307076282
ISSNs: 1077-5463 (print)
Related URLs:
Keywords: flexible, manipulator, fuzzy logic, inverse dynamics, distributed controller
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QA Mathematics > QA76 Computer software
Divisions : University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Dynamics
ePrint ID: 71463
Accepted Date and Publication Date:
December 2007Published
Date Deposited: 11 Feb 2010
Last Modified: 31 Mar 2016 13:02

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