Discrete-time systems;
linearization;
local diffeomorphism;
nonlinear observers;
time-scaling method;
D O I:
10.1109/CDC.2008.4739087
中图分类号:
TP [自动化技术、计算机技术];
学科分类号:
0812 ;
摘要:
Necessary and sufficient conditions are presented under which a discrete-time autonomous system with outputs is locally diffeomorphic to an output-scaled linear observable system or an output-scaled nonlinear system in the observer form. As a consequence of such characterizations, the nonlinear observer design problem is studied by a time-scaling approach combined with the exact linearization technique, for a broader class of discrete-time nonlinear systems.