Synchronization of State Based Control Processes with Delayed and Asynchronous Measurements
Haitham A. Hindi, Lara S. Crawford, and Markus P.J. Fromherz
Abstract
This paper addresses the problem of controller
state synchronization in a networked control system with distributed
sensing and actuation, where actuators must handoff
and switch controllers "on-the-fly" to speak, as they go
from performing one task to another, in the presence of fixed
communication delays and asynchronous measurements. We
present a technique which enables new controllers to seamlessly
join and leave a task, by encapsulating the controller
in a finite statemachine which handles the synchronization.
We also discuss issues related to the realtime implementation
of this technique and we finish with a demonstrated on an
example from the document printing domain.
© 2005 IEEE.
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