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Exponential observers for nonlinear oscillators

In this paper, exponential observers are constructed using Sundarapandian's observer design (2002) for the second order and third order nonlinear oscillators. The study of nonlinear oscillators has been very important in the study of dynamical systems. Nonlinear oscillators have many applications in areas such as mechanical engineering, electrical engineering, etc. Numerical examples and MATLAB plots have been shown to illustrate the main results derived in this paper.