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Decentralised observer-based control scheme for interconnecteddynamical systems with unknown

Summary: Decentralised observer-based control scheme for
interconnecteddynamical systems with unknown
M.Aldeenand J.F.Marsh
Abstract: A completely decentralised observer-based control scheme for interconnected dyna-
mical systems is proposed. The scheme requires no information transfer among the subsystems,
local observers or local controllers and applies equally to systems with known and/or unknown
disturbances. It is shown that each local observer asymptotically converges to the true state of its
corresponding subsystem an4 on satisfaction of some mild controllahility and observability
conditions, local stabilising feedback controllers can be designed in isolation of the local
observers. A numerical example with simulation results is given to illustrate the effectiveness
of the new approach.
1 Introduction
The ability to control an interconnected system by decen-
tralised state feedback depends crucially on the availability
of states at each subsystem. In most practical cases, either
the states of a subsystem are not completely accessible for
measurement or the cost of measurement is prohibitively
high. In sucb cases, a state-estimation scheme may he
required to estimate local states for local feedback. Thus


Source: Aldeen, Mohammad - Department of Electrical and Electronic Engineering, University of Melbourne


Collections: Engineering