Design of Sampled Data Nonlinear Observers Alternative Approaches in the Context of Observer Error Linearization

This paper has explored alternative design approaches for sampled data nonlinear observers in the context of the observer error linearization design method. After a brief and necessary review of observer error linearization, two alternative time‐discretization approaches were examined, one involving discretization at the beginning, and the other at the end. For the case of large sampling period, a sampled data observer inter‐sample prediction was proposed.