Grey Wolf Optimizer Algorithm-Based Tuning of Fuzzy Control Systems With Reduced Parametric Sensitivity

This paper proposes an innovative tuning approach for fuzzy control systems (CSs) with a reduced parametric sensitivity using the Grey Wolf Optimizer (GWO) algorithm. The CSs consist of servo system processes controlled by Takagi-Sugeno-Kang proportional-integral fuzzy controllers (TSK PI-FCs). The...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2017-01, Vol.64 (1), p.527-534
Main Authors: Precup, Radu-Emil, David, Radu-Codrut, Petriu, Emil M.
Format: Article
Language:English
Subjects:
Algorithms
Control systems
Experimental results
Fuzzy control
fuzzy control systems (CSs)
Fuzzy systems
Grey Wolf Optimizer (GWO)
Heuristic algorithms
Nonlinearity
Optimization
Parameter sensitivity
parametric sensitivity
Process control
Proportional integral
Sensitivity
Sensitivity analysis
servo systems
Servocontrol
Servomotors
Time constant
Tuning
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Summary:This paper proposes an innovative tuning approach for fuzzy control systems (CSs) with a reduced parametric sensitivity using the Grey Wolf Optimizer (GWO) algorithm. The CSs consist of servo system processes controlled by Takagi-Sugeno-Kang proportional-integral fuzzy controllers (TSK PI-FCs). The process models have second-order dynamics with an integral component, variable parameters, a saturation, and dead-zone static nonlinearity. The sensitivity analysis employs output sensitivity functions of the sensitivity models defined with respect to the parametric variations of the processes. The GWO algorithm is used in solving the optimization problems, where the objective functions include the output sensitivity functions. GWO's motivation is based on its low-computational cost. The tuning approach is validated in an experimental case study of a position control for a laboratory nonlinear servo system, and TSK PI-FCs with a reduced process small time constant sensitivity are offered.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2016.2607698