International Journal of Electrical and Computer Engineering 5:6 2010 Adaptive Sliding Mode Observer for a Class of Systems

Abstract

Abstract—In this paper, the performance of two adaptive observers applied to interconnected systems is studied. The nonlinearity of systems can be written in a fractional form. The first adaptive observer is an adaptive sliding mode observer for a Lipchitz nonlinear system and the second one is an adaptive sliding mode observer having a filtered error as a sliding surface. After comparing their performances throughout the inverted pendulum mounted on a car system, it was shown that the second one is more robust to estimate the state. Keywords—Adaptive observer, Lipchitz system, Interconnected fractional nonlinear system, sliding mode

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