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Digitale Medien

Identifying Coulomb and Viscous Friction from Free-Vibration Decrements (1998)

Liang, J. W. ; Feeny, B. F.

Springer

Nonlinear dynamics 16 (1998), S. 337-347

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ISSN: 1573-269X

Schlagwort(e): Friction oscillator ; friction estimation ; friction identification ; Coulomb friction ; free vibration

Quelle: Springer Online Journal Archives 1860-2000

Thema: Mathematik

Notizen: Abstract This study focuses on an algorithm for the simultaneous identification of Coulomb and viscous damping effects from free-vibration decrements in a damped linear single degree-of-freedom (DOF) mass-spring system. Analysis shows that both damping effects can indeed be separated. Numerical study of a combined-damping system demonstrates a perfect match between the simulation parameters and the estimated values. Experimental study includes two types of real systems. The method is applied to an experimental industrial bearing. Experimental results are compared with numerical simulations to illustrate the reliability of this method. An analysis provides conservative bounds on error estimates. An example of the effect of quantization error on the estimations is included.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1008213814102

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Time-bin-entangled photon holes (2012)

J. Liang, J. D. Franson, and T. B. Pittman

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-11-29

Beschreibung: Author(s): J. Liang, J. D. Franson, and T. B. Pittman The general concept of entangled photon holes is based on a correlated absence of photon pairs in an otherwise constant optical background. Here we consider the specialized case when this background is confined to two well-defined time bins, which allows the formation of time-bin-entangled photon ho... [Phys. Rev. A 86, 053831] Published Wed Nov 28, 2012

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Analytical ground state for the Jaynes-Cummings model with ultrastrong coupling (2011)

Yuanwei Zhang, Gang Chen, Lixian Yu, Qifeng Liang, J.-Q. Liang, and Suotang Jia

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2011-06-18

Beschreibung: Author(s): Yuanwei Zhang, Gang Chen, Lixian Yu, Qifeng Liang, J.-Q. Liang, and Suotang Jia We present a generalized variational method to analytically obtain the ground-state properties of the Jaynes-Cummings model with the ultrastrong coupling. An explicit expression for the ground-state energy, which agrees well with the numerical simulation in a wide range of the experimental parameter... [Phys. Rev. A 83, 065802] Published Fri Jun 17, 2011

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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