@article{GawWalWag05,
author = {P.J. Gawthrop and M.I. Wallace and D.J. Wagg},
title = {Bond-graph Based Substructuring of Dynamical Systems},
journal = {Earthquake Engng Struc. Dyn.},
year = 2005,
volume = 34,
number = 6,
pages = {687-703},
month = {May},
abstract = {
A bond graph approach to hybrid simulation of dynamical systems using
numerical-experimental real-time substructuring is presented. The
bond graph concepts of a {virtual junction} and a {virtual
actuator}, hitherto used in the context of physical-model based
control, are used to perform the substructuring in an intuitively
appealing way. The approach is illustrated by the reworking of a
previously-published example.
The approach is verified experimentally using a bench-top multiple
mass-spring system for the physical substructure and automatically
generated real-time code is used to implement the numerical
substructure.
},
doi = {10.1002/eqe.450}
}
@article{GawWan05,
author = {P.J. Gawthrop and L. Wang},
title = {Data Compression for Estimation of the Physical Parameters
of Stable and Unstable Linear Systems},
journal = {Automatica},
year = 2005,
volume = 41,
number = 8,
pages = {1313-1321},
month = {August},
abstract = {
A two-stage method for the identification of physical system
parameters from experimental data is presented. The first stage
compresses the data as an empirical model which encapsulates
the data content at frequencies of interest. The second stage then
uses data extracted from the empirical model of the first stage
within a non-linear estimation scheme to estimate the unknown
physical parameters. Furthermore, the paper proposes use of
exponential data weighting in the identification of partially
unknown, unstable systems so that they can be treated in the same
framework of a stable system. Experimental data are used to
demonstrate the efficacy of the proposed approach.
},
doi = {10.1016/j.automatica.2005.03.013}
}
@article{Gaw05,
author = {Peter J Gawthrop},
title = {Virtual Actuators with Virtual Sensors},
journal = {Proceedings of the Institution of Mechanical Engineers
Pt. I: Journal of Systems and Control Engineering},
year = 2005,
volume = 219,
number = 5,
pages = {371 -- 377},
month = {August},
abstract = {The virtual actuator approach to bond graph based
control is extended to use virtual sensor
inputs. This allows relative degree conditions on the
controller to be relaxed. Furthermore, the effect of
the transfer system can be eliminated from the closed
loop system. Illustrative examples are given.},
doi = {10.1243/095965105X33473}
}
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