Equivalence between fuzzy logic controllers and PI controllers for single input systems
Fuzzy Sets and Systems
PID type fuzzy controller and parameters adaptive method
Fuzzy Sets and Systems
A PI-type controller with self-tuning scaling factors
Fuzzy Sets and Systems
A PID type fuzzy controller with self-tuning scaling factors
Fuzzy Sets and Systems
Fuzzy control of a neutralization process
Engineering Applications of Artificial Intelligence
A new methodology for designing a fuzzy logic controller and PI, PD blending mechanism
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
Design of fuzzy PID controllers using modified triangular membership functions
Information Sciences: an International Journal
Automatic Fuzzy Membership Function Tuning Using the Particle Swarm Optimization
PACIIA '08 Proceedings of the 2008 IEEE Pacific-Asia Workshop on Computational Intelligence and Industrial Application - Volume 02
Engineering Applications of Artificial Intelligence
Expert Systems with Applications: An International Journal
Engineering Applications of Artificial Intelligence
Genetic fuzzy self-tuning PID controllers for antilock braking systems
Engineering Applications of Artificial Intelligence
An error-based on-line rule weight adjustment method for fuzzy PID controllers
Expert Systems with Applications: An International Journal
Adaptive fuzzy model based inverse controller design using BB-BC optimization algorithm
Expert Systems with Applications: An International Journal
Robotics and Computer-Integrated Manufacturing
Conventional fuzzy control and its enhancement
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
A robust self-tuning scheme for PI- and PD-type fuzzy controllers
IEEE Transactions on Fuzzy Systems
New methodology for analytical and optimal design of fuzzy PID controllers
IEEE Transactions on Fuzzy Systems
Fuzzy controllers: synthesis and equivalences
IEEE Transactions on Fuzzy Systems
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
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In this study, an on-line tuning method is proposed for fuzzy PID controllers via rule weighing. The rule weighing mechanism is a fuzzy rule base with two inputs namely; ''error'' and ''normalized acceleration''. Here, the normalized acceleration provides relative information on the fastness or slowness of the system response. In deriving the fuzzy rules of the weighing mechanism, the transient phase of the unit step response of the closed loop system is to be analyzed. For this purpose, this response is assumed to be divided into certain regions, depending on the number of membership functions defined for the error input of the fuzzy logic controller. Then, the relative importance or influence of the fired fuzzy rules is determined for each region of the transient phase of the unit step response of the closed loop system. The output of the fuzzy rule weighing mechanism is charged as the tuning variable of the rule weights; and, in this manner, an on-line self-tuning rule weight assignment is accomplished. The effectiveness of the proposed on-line weight adjustment method is demonstrated on linear and non-linear systems by simulations. Moreover, a real time application of this new method is accomplished on a pH neutralization process.