A Practical Finite-Time Convergent Observer against Input Disturbance and Measurement Noise

In Hyuk KIM  Young Ik SON  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E98-A   No.9   pp.1973-1976
Publication Date: 2015/09/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E98.A.1973
Type of Manuscript: LETTER
Category: Systems and Control
state observer,  finite-time convergence,  input disturbance,  measurement noise,  proportional-integral observer,  

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A simple robust finite-time convergent observer is presented in the presence of unknown input disturbance and measurement noise. In order to achieve the robust estimation and ensure the finite-time convergence, the proposed observer is constructed by using a multiple integral observer scheme in a hybrid system framework. Comparative computer simulations and laboratory experiments have been performed to test the effectiveness of the proposed observer.