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Design and Performance of LQR and LQR based Fuzzy Controller for Double Inverted Pendulum System

Narinder Singh Bhangal
Deptt. of Instrumentation & Control Engg. NIT, Jalandhar, (PB) India
Abstract—The objective of this paper is to compare performance between two type of controller for a double inverted pendulum system. Double inverted pendulum is a non-linear, unstable and fast reaction system. DIP is stable when its two pendulums allocated in vertically position and have no oscillation and movement and also inserting force should be zero. The objective is to determine the control strategy that to delivers better performance with respect to pendulum angle’s and cart position. In this paper LQR based fuzzy controller is designed and its performance is compared with Linear Quadratic Regulator controller using Matlab and Simulink. The results shows that LQR based fuzzy controller produced better response as compared to LQR control strategy.

Index Terms—double inverted pendulum, LQR, fuzzy control, fusion function

Cite: Narinder Singh Bhangal, "Design and Performance of LQR and LQR based Fuzzy Controller for Double Inverted Pendulum System," Journal of Image and Graphics, Vol. 1, No. 3, pp. 143-146, September 2013. doi: 10.12720/joig.1.3.143-146
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