Finite-Time Observers for Parameters and State Variables of Nonlinear Systems

We provide a new class of finite-time observers for continuous-time nonlinear systems that are affine in the unmeasured state variable and also contain unknown constant parameters. Our method provides exact values variables parameters, fixed finite time is independent initial values. analogs where there known delay measurements, discrete-time systems. approach does not rely on an adaptive controller, suitable computing weights artificial neural network representations additive uncertainties dynamics. example illustrates ease with which our assumptions can be verified practice.