Robust Stability Analysis of Sun Seeker System by Arguon´s Theorem

Author

Rastogi, Saarang ; Jha, S.K. ; Oberoi, Ratik

Author_Institution

Div. of Instrum. & Control Eng., NSIT, New Delhi, India

fYear

2015

fDate

21-22 Feb. 2015

Firstpage

202

Lastpage

207

Abstract

The main objective of the present work is to investigate the robust stability analysis aspect of Sun Seeker System (SSS) under parametric uncertainties. In this paper robust stability analysis of closed loop block diagram of a SSS is presented with and without proportional-integral-derivative (PID) controller. Transfer functions are derived for both SSS systems i.e., with and without PID controller. The stability is computed using both Arguon and Kharitonov method. A comparative analysis is done and the method that is more efficient and less time consuming is found out for both the cases: with and without PID controller. The Stability Margin (SM) is found out for the SSS with PID and is analyzed.

Keywords

closed loop systems; control system analysis; diagrams; feedback; photovoltaic cells; photovoltaic power systems; position control; power system control; robust control; three-term control; transfer functions; uncertain systems; Arguon´s theorem; Kharitonov method; PID controller; PV; SM; SSS; closed loop block diagram; feedback mechanism; parametric uncertainty; photovoltaic cell; proportional-integral-derivative controller; robust stability analysis; stability margin; sun seeker system; transfer function; Polynomials; Robust stability; Robustness; Stability criteria; Sun; Transfer functions; Arguon´s Theorem; Kharitonov´s Theorem; PID; Routh Criterion; SSS;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Computing & Communication Technologies (ACCT), 2015 Fifth International Conference on

Conference_Location

Haryana

Print_ISBN

978-1-4799-8487-9

Type

conf

DOI

10.1109/ACCT.2015.122

Filename

7079079