2002•IEEE Transactions on Automatic ControlRequires access

A new approach to state observation of nonlinear systems with delayed output

Alfredo Germani, Costanzo Manes, Pierdomenico Pepe

Abstract

The article presents a new approach for the construction of a state observer for nonlinear systems when the output measurements are available for computations after a nonnegligible time delay. The proposed observer consists of a chain of observation algorithms reconstructing the system state at different delayed time instants (chain observer). Conditions are given for ensuring global exponential convergence to zero of the observation error for any given delay in the measurements. The implementation of the observer is simple and computer simulations demonstrate its effectiveness.

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Key concepts: Control theory (sociology), Observer (physics), Convergence (economics), Nonlinear system, Computation, Computer science, State observer, State (computer science)