Results 231 to 240 of about 13,045 (261)

Identifying the presence of forced oscillations using oscillation signatures

2017 IEEE International Conference on Industrial and Information Systems (ICIIS), 2017
Forced oscillations in a power system are distin-guished from natural oscillations as a rouge oscillatory input to the system. Two examples for sources of these forced oscillations are a malfunctioning governor that has not been modeled or a cyclic load with a low frequency.
B. W. H. A. Rupasinghe, Udaya D. Annakkage   +1 more
openaire   +1 more source

Distinguished Oscillations of a Forced Harmonic Oscillator

The College Mathematics Journal, 1995
(1995). Distinguished Oscillations of a Forced Harmonic Oscillator. The College Mathematics Journal: Vol. 26, No. 2, pp. 111-117.
openaire   +1 more source

Forced oscillations in a rotating liquid (II)

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1962
Der vorliegenden Analyse liegen die linearisierten Gleichungen fur die achsensymmetrischen Storungen einer gleichformig rotierenden Flussigkeit zugrunde. Dabei wird aber keine Annahme hinsichtlich einer Zeitabhangigkeit der erzwungenen Bewegungen gemacht und die Entwicklung der Storungen vom Beginn der erzwungenen Bewegung an studiert.
openaire   +3 more sources

Forced oscillations in piezoelectric crystals.

2002
The author proves existence and uniqueness of weak solutions to a hyperbolic-elliptic system of PDEs, whichs models forced oscillations in a piezoelectric viscoelastic body. The system consists of a linear dissipative second order hyperbolic system (for the elastic displacement) and a linear second-order elliptic equation (for the electric potential ...
openaire   +2 more sources

Forced Oscillations

1997
Yu. A. Mitropolskii, Nguyen Van Dao
openaire   +2 more sources

Some Results on the Existence of Forced Oscillations in Mechanical Systems

Proceedings of the Steklov Institute of Mathematics, 2020
Ivan Polekhin
exaly  

On forced oscillations of Lagrangian systems

1986
We study the existence of infinitely many periodic solutions of the Lagrangian system $\frac{d}{dt}\frac{\partial\mathcal{\mathfrak{L}}}{\partial\dot{q}}$-$\frac{\text{\ensuremath{\partial}}\mathcal{\mathfrak{L}}}{\partial q}$+ f(t) = 0 (where f(t) is a periodic «forcing» term). We assume that the potential «grows» superquadratically at infinity.
openaire   +3 more sources

Forced Oscillators

1997
Richard H. Enns, George C. McGuire
openaire   +1 more source

Forced oscillations of a body attached to a viscoelastic rod of fractional derivative type

International Journal of Engineering Science, 2013
Teodor M Atanackovic, Stevan Pilipovic, Dusan Zorica   +2 more
exaly  

Suppression of power system forced oscillations based on PSS with proportional-resonant controller

International Transactions on Electrical Energy Systems, 2017
Shuang Feng
exaly