Results 251 to 260 of about 173,441,856 (300)

PEBB System Stability Margin Monitoring

Journal of Vibration and Control, 2002
PEBB (power electronics building block) systems are typical nonlinear systems. Under the conventional but still popular linear control design, the system stability margin varies from one operating point to another. This paper introduces a novel approach to monitoring the DC bus stability margin of a PEBB system online.
Feng, Xiaogang, Ye, Zhihong, Lee, Fred C., Borojevic, Dushan   +3 more
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Stability margin of a closed interval system

International Journal of Systems Science, 1998
The stability margin of a closed system under the interval perturbation mode is studied using the concpet of H-equivalence and the means of geometric analysis in the complex plane. The problem is converted to a one-dimensional mathematical program. The solution of the program gives the stability margin which can be used to check the robust stability of
Zhiyong Geng, Lin Huang
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Simplifications in multidimensional stability margin computations

IEEE Transactions on Acoustics, Speech, and Signal Processing, 1987
Previously published algorithms for the computation of multidimensional stability margins of discrete systems require a stability test of these systems before starting the computational algorithm. In this correspondence, it is shown that the multidimensional stability test may be replaced by single-dimensional tests for one kind of stability margin ...
David Hertz, Ezra Zeheb
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Stability Margins and Optimality

1997
For stabilization of an unstable system, feedback is a necessity. With uncertainties in the operating environment, and in system components, feedback is needed to preserve stability and improve performance. However, feedback can also be dangerous. A tighter feedback loop, instead of achieving better performance, may cause instability.
Dr R. Sepulchre, M. Janković, P. V. Kokotović   +2 more
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Stability margins of linear prediction polynomials

ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
This paper performs a detailed analysis of the zero location of linear predictor polynomials and in particular determines a precise stability margin for some classical predictors such as the autocorrelation and the postwindowed cases. It is shown that an adequate mathematical tool in this context is the concept of numerical range or field of values of ...
Philippe Delsarte, Yves V. Genin, Yves G. Kamp   +2 more
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The Marginal stability in porous inhomogeneous media

Mathematical Proceedings of the Cambridge Philosophical Society, 1961
The breakdown of stability in a porous homogeneous medium of a fluid subject to a vertical temperature gradient was examined by Lapwood (4). However, in natural conditions the fluids move generally in inhomogeneous media and then it is important to deal with the problem of stability in these media; the purpose of this paper is to consider just such a ...
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Stability margin via reflection vectors

2003 European Control Conference (ECC), 2003
A new stability margin for discrete-time systems is proposed in the system characteristic polynomial coefficient space making use of, so-called, reflection vectors of monic Schur polynomials. Reflection vector margins give the distance to the stability boundary in directions of In reflection vectors of an n-th degree polynomial.
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Stability and margin of stability tests for multidimensional filters

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1999
The aim of the paper is to investigate stability criteria of E. Zeheb and E. Walach (1981, 1982) for \(n\)-dimensional recursive digital filters. The authors succeed to obtain simplified proofs of the stability and the margin of stability criteria of Zeheb and Walach, using the method of Lagrange multipliers.
Curtin, Eugene, Saba, Salim
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Application of a New Robust Stability Margin

IFAC Proceedings Volumes, 1992
Abstract The aim of this paper is to derive a new robust stability margin. Known sufficient conditions for robust stability stated in gap-metric sense contain inherent conservativeness in the formulation of the various steps. In this paper conservativeness in one of the steps is removed, resulting in a new robustness margin.
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Margining and the Stability of the Banking Sector

SSRN Electronic Journal, 2008
We investigate the effects of margining, a widely-used mechanism to attach collateral to derivatives contracts, on derivatives’ trading volume, default risk, and on the welfare in the banking sector. First, we develop a stylized banking sector equilibrium model to derive a set of testable hypotheses.
Rajna Gibson, Carsten Murawski
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