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DOI: 10.14569/IJACSA.2017.080140
PDF

From PID to Nonlinear State Error Feedback Controller

Author 1: Wameedh Riyadh Abdul-Adheem
Author 2: Ibraheem Kasim Ibraheem

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 8 Issue 1, 2017.

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Abstract: In this paper an improved nonlinear state error feedback controller (INLSEF) has been proposed for perfect reference tracking and minimum control energy. It consists of a nonlinear tracking differentiator together with nonlinear combinations of the error signal. The tracking differentiator generates a set of reference profile for the input signal, which is the signal itself in addition to its derivatives. On the other hand, the 12-parameters nonlinear combinations of the error signal make the INLSEF controller can handles with time-varying and system’s nonlinearity. Digital simulation studies have been conducted for the proposed controller and compared with several works from literature survey on two case studies, mass-spring-damper which is a very nonlinear system and nonlinear ball and beam systems. The parameters of the nonlinear combination of the error signal are tuned to satisfy the optimality condition by minimizing the OPI performance index defined in this work. From the simulations results one can conclude that the proposed INLSEF controller performance is better than that of its counterpart in terms of speed and control energy and minimum error. Also, the results showed that the proposed controller is effectively enhancing the stability and performance of the closed loop system.

Keywords: tracking differentiator; state error feedback; Lyapunov function; asymptotic stability; nonlinear PID

Wameedh Riyadh Abdul-Adheem and Ibraheem Kasim Ibraheem, “From PID to Nonlinear State Error Feedback Controller” International Journal of Advanced Computer Science and Applications(IJACSA), 8(1), 2017. http://dx.doi.org/10.14569/IJACSA.2017.080140

@article{Abdul-Adheem2017,
title = {From PID to Nonlinear State Error Feedback Controller},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2017.080140},
url = {http://dx.doi.org/10.14569/IJACSA.2017.080140},
year = {2017},
publisher = {The Science and Information Organization},
volume = {8},
number = {1},
author = {Wameedh Riyadh Abdul-Adheem and Ibraheem Kasim Ibraheem}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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