||Distributed event-based observers for lti networked systems
Carlo Fischione , Dimos Dimarogonas , Francisco Rubio , Karl Johansson , Pablo Millan , Ubaldo Tiberi
||A novel event-based technique for distributed estimation over wireless sensor
networks (WNSs) is presented. The methodology is based on local Luenberger-like observers
in combination with a consensus strategy. The observer design problem is firstly solved
via linear matrix inequalities by assuming periodic communication among the observers.
A proof of asymptotic stability of the estimation errors is provided. Then, an event–based
implementation is proposed to reduce both the traffic load in the network and the energy
consumption of the nodes due to unnecessary transmissions. It is shown that Globally
Ultimately Uniformly Boundedness (GUUB) of the estimation errors into an arbitrary
small ultimate bound region can be achieved when using the event–based implementation.
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