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Canonical realization of (2+1)-dimensional Bondi-Metzner-Sachs symmetry
(2017-07-12)
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We construct canonical realizations of the (2+1)-dimensional Bondi-Metzner-Sachs (bms3) algebra as symmetry algebras of a free Klein-Gordon (KG) field in 2+1 dimensions for both massive and massless cases. We consider two ...
Robust controller for a full-bridge rectifier using the IDA approach and GSSA modeling
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-03)
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An interconnection-and-damping assignment passivity-based control (IDA-PBC) for a full-bridge rectifier is presented in this paper. The closed-loop system performance fulfils unity power factor in the ac mains and output ...
Experimental characterization methodology for the identification of voltage losses of PEMFC: applied to an open cathode stack
(2012)
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The objective of this study is to describe the methodology used to isolate the main voltage loss indicators through a simple and effective treatment of a current interrupt and current sweep. The voltage loss indicators are ...
Model predictive control for ethanol steam reformers with membrane separation
(2017-01-26)
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This paper focuses on the dynamic modelling and the predictive control of an ethanol steam reformer (ESR) with Pdsingle bondAg membrane separation stage for the generation of pure hydrogen. Hydrogen purity necessary to ...
A new estimation of the lower error bound in balanced truncation method
(2014-08-01)
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For a single-input/single-output (SISO) linear time-invariant dynamical system, the standard H-infinity-norm lower error bound of balanced truncation method is parallel to G(s) - G(r)(s)parallel to(H infinity) >= sigma(r+1), ...
Sliding motion, robust control and power loss minimization in a class of non-linear switched converters
(TAYLOR & FRANCIS LTD, 2007-06)
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In this paper we propose a sliding mode control scheme that allows robust control of the output voltage in a class of nonlinear switched converters that includes the Non-Inverting Buck-Boost, the Watkins-Johnson and the ...
LPV observer-based strategy for rejection of periodic disturbances with time-varying frequency
(2015-01-01)
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Rejection of periodic disturbances is an important issue in control theory and engineering applications. Conventional strategies like repetitive control and resonant control can deal adequately with this problem but they ...
Repetitive control of servo systems with time delays
(2014-03)
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Accés restringit per política de l'editorial
Article.
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In many industrial robotic servo applications there is a need to track periodic reference signals and/or reject periodic disturbances. Moreover, time-delays are usually unavoidable in control systems due to the sensoring ...
Analysis of the dynamics of an active control of the surface potential in metal oxide gas sensors
(Pergamon Press, 2018-05-08)
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Nonlinear control design and averaging analysis of a full-bridge boost rectifier
(2010-01)
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We are considering the problem of controlling AC/DC full bridge converters. The control objectives are twofold:(i) guaranteeing a regulated voltage for the supplied load, (ii) enforcing power factor correction (PFC) with ...