Results 241 to 250 of about 1,403,536 (292)

Aids in the calculation of transient stability

Journal of the Institution of Electrical Engineers, 1962
An abrupt change in the steady operating conditions of a synchronous power system may produce transient-stability problems. A study of these is of great importance in electrical engineering. This account reviews the application of various computational aids to the solution of these problems.
K.C. Parton, D.A. Newey
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Method for calculating optical coating stabilities

Applied Optics, 1993
The reflectivity R of a multilayer stack and its first and second derivatives with respect to the phase change are derived here by a recursive method. These equations improve the determination of stability conditions for coatings and widen the applications to treatments other than antireflection coatings, as reported by Mouchart [Appl. Opt.
L E, Regalado, R, Garcia-Llamas
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Method for calculating the stability of extramedullary plates

Biomedical Engineering, 1968
1. The special VT5-1 titanium alloy plate for osteosynthesis, developed by VNIIKhAI, affords stable fixation of the fragment in fracture of the tibia only in relation to the vertical (static) position. A change in the position of the patient's center of gravity relative to the neutral line of the plate may lead to movement of the fragments (due to loss
I M, Bezukhov, V P, Baldin
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Fast calculation of stabilizing PID controllers

Automatica, 2003
A new analytical method, with fast calculation, is proposed to find the stabilizing regions in the parameter space of PID controllers. The approach provides easy calculation and, therefore, is suitable for both hand calculations and digital computation. Bounds for the proportional term are obtained.
Mehmet Turan Söylemez, Neil Munro, H. Baki   +2 more
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Evaluation of Tietjens Function in Stability Calculations

The Physics of Fluids, 1966
Tietjens function is re-expressed as a ratio of rapidly converging power series of its (complex) argument which may be utilized to replace tables or graphs in the calculation of critical Reynolds numbers from asymptotic theory.
Chen, T. S., Joseph, D. D., Sparrow, E. M.   +2 more
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Calculation of the stability ratio of suspensions using Emulsion Stability Simulations

Computer Physics Communications, 2009
According to Emulsion Stability Simulations (ESS), the flocculation of two non-deformable drops in the primary minimum of the interaction potential, necessarily leads to their coalescence. This property is used here for the evaluation of the stability ratio (W ) of solid particles, interacting with the same interparticle potential as the one of non ...
German Urbina-Villalba, Aileen Lozsán, Kareem Rahn, Manuel S. Romero-Cano   +3 more
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Boundary layer stability calculations

The Physics of Fluids, 1987
In this paper numerical calculation of the spatial stability of disturbances in the parallel and nonparallel Blasius boundary layers is considered. Chebyshev polynomials are used for discretization. The problem with the boundary condition at infinity is overcome, and the resulting nonlinear matrix eigenvalue problem is attacked directly.
Bridges, Thomas J., Morris, Philip J.
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DIRECT CALCULATION OF STABILITY MARGINS

IFAC Proceedings Volumes, 1994
Abstract A novel method is presented, which has been developed to compute stability margins in the parameter space and other related characteristics of linear control loops in a direct and efficient manner using methods of linear algebra. The algebraic representation of stability margins in terms of a pencil of resultant matrices opens the ...
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Stabilization calculations on a N2− resonance

The Journal of Chemical Physics, 1973
Stabilization calculations were made on the Σg+2 state of N2−, which may be responsible for the elastic electron scattering resonance at 11.48 eV. A binding energy of 0.21 eV relative to the E3Σg+ Rydberg state was obtained.
I. Eliezer, A. Moualem
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Calculation of the Multiloop Stability Margin

1986 American Control Conference, 1986
A mapping theorem by Zadeh and Desoer [1] serves as the basis for an algorithm that computes the stability margin k m of diagonally perturbed multivariable feedback systems without conservativeness. The algorithm is applicable to both real and complex parameter uncertainty.
Raymond R. E. de Gaston, Michael G. Safonov   +1 more
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