Jorge Cortés
Professor
Cymer Corporation Endowed Chair
Time-invariant versus time-varying actuator
scheduling in complex networks
E. Nozari, F. Pasqualetti,
J. Cortés
Proceedings of the American Control Conference, Seattle, Washington, USA, 2017, pp. 4995-5000
Abstract
This paper studies the benefits of time-varying actuator scheduling
to the controllability of complex networks. The network dynamics
are described by a single-input discrete-time linear system over an
undirected graph. Taking the trace of the controllability Gramian
as the measure of network controllability, we identify a new notion
of nodal communicability and unveil its role in the time-varying
actuator scheduling problem. We then proceed to identify conditions
on the network structure that determine whether time-varying
actuator scheduling is better than time-invariant actuator
selection. The main conclusion of our results is that having several
and heterogeneous central nodes (versus having a single highly
central node) is the common factor in networks where time-varying
actuator scheduling is advantageous.
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Mechanical and Aerospace Engineering,
University of California, San Diego
9500 Gilman Dr,
La Jolla, California, 92093-0411
Ph: 1-858-822-7930
Fax: 1-858-822-3107
cortes at ucsd.edu
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