Research on a new nonlinear discrete-time tracking-differentiator filtering characteristic

A new model about nonlinear discrete-time tracking-differentiator which can quickly track an input signal without overshoot and chattering and can produce a well differential signal is presented. Itpsilas filtering capability is studied extensively, The result shows that this tracking-differentiator has excellent capability of remove noise. Finally, a simulation and analysis of experimental data is given, as a result the feasibility of the tracking-differentiatorpsilas filtering method is confirmed.