Authors:
Wei Yin Leong
and
Hieu Trinh
Affiliation:
Deakin University, Australia
Keyword(s):
Reduced-order State Observers, Interconnected Systems, Time-delay Systems, Observability, Coordinate Transformation.
Related
Ontology
Subjects/Areas/Topics:
Distributed Control Systems
;
Engineering Applications
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
Abstract:
This paper considers the design of state observers for interconnected time-delay systems using a coordinate
transformation method. Through such a transformation, the system that has interconnection and state delays is
metamorphosed into a new system that injects time-delay information into its input and output terms, before
reintroducing them back into the latter system, effectively coupling the delay terms into the IO injection
terms and eliminating the delay values from the state variables. Next, full-order and reduced-order observers
are designed based on the transformed system. Finally, the observed states of the transformed system that
correspond to the original system is used to deduce the estimates of the original system. A numerical example
is provided of an interconnected time-delay system.