Digital control of multiple discrete passive plants over networks
by N. Kottenstette, Joseph F. Hall III, X. Koutsoukos, Panos Antsaklis, J. Sztipanovits
International Journal of Systems, Control and Communications (IJSCC), Vol. 3, No. 2, 2011

Abstract: This paper provides a passivity based framework to synthesise lm2-stable digital control networks in which m strictly-output passive controllers can control n – m strictly-output passive plants. The communication between the plants and controllers can tolerate time varying delay and data dropouts. In particular, we introduce a power-junction-network, a general class of input-output-wave-variable-network which allows even a single controller (typically designed to control a single plant) to accurately control the output of multiple plants even if the corresponding dynamics of each plant is different. In addition to the power-junction-network we also introduce a Passive Downsampler (PDS) and Passive Upsampler (PUS) in order to further reduce networking traffic while maintaining stability and tracking properties. A detailed (soft real-time) set of examples shows the tracking performance of the networked control system.

Online publication date: Tue, 31-Mar-2015

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