GDL

Journal from gdlhub / 2019-05-20 14:54:06
Oleh : Ritu Raj & B. M. Mohan, Fuzzy Information and Engineering
Dibuat : 2019-05-20, dengan 1 file

Keyword : Mathematical model, Takagi-Sugeno rule, PI/PD controller, variable gain controller, fuzzy control, BIBO stability
Url : http://www.tandfonline.com/doi/full/10.1080/16168658.2018.1517974
Sumber pengambilan dokumen : WEB

This paper deals with general fuzzy two-term controllers of Takagi-Sugeno (TS) type. Analytical structures and properties of general fuzzy PI/PD controllers are investigated with a modified rule base. The rule base contains three rules which effectively reduce the number of tuning parameters of the controllers. The fuzzy two-term controller uses at least three triangular or trapezoidal fuzzy sets on each input variable, algebraic product/minimum t-norm, bounded sum/maximum t-co-norm, and Centre of Gravity (CoG) defuzzification strategy. Four new models of TS type fuzzy controllers are proposed. The general fuzzy PI/PD controller with modified TS rule base is analogous to a variable gain (nonlinear) PI/PD controller. The gain either varies or remains constant in different regions of the input plane. The gain variations of the controller and the stability analysis of closed-loop control system with any one of the proposed models in the loop have been investigated. The applicability of the proposed controllers is shown with the help of examples.

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