𝔖 Bobbio Scriptorium
✦   LIBER   ✦

AEROACOUSTICS AND TIME VARYING SYSTEMS

✍ Scribed by P.O.A.L. Davies


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
458 KB
Volume
190
Category
Article
ISSN
0022-460X

No coin nor oath required. For personal study only.

✦ Synopsis


Progress in the prediction and control of flow generated noise over the past four decades is described in relation to developments in the descriptive modelling of the vortical structures in free and confined turbulence, that are responsible for its generation. Their controlling influence on sound emission at low Mach numbers, with the influence of acoustic feedback on their development, are both illustrated with specific reference to jet noise, engine breathing noise, plant noise and the voicing of vowels.


πŸ“œ SIMILAR VOLUMES


Time-varying pascal systems
✍ Z. Trzaska πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 563 KB

This paper deals with structures and properties of time-varying multivariable Pascal systems. Semigroup properties of the time-varying Pascal systems are presented and corresponding solutions are established. The attractive feature of this technique is that it reduces the original differential syste

On slowly time-varying systems
✍ Mohammed Dahleh; Munther A. Dahleh πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 420 KB

A characterization of stabilizing controllers for slowly time-varying systems based on input-output descriptions of the plant and the controller is presented. This approach generalizes standard results on slowly time-varying systems with finite dimensional state-space representation, and allows both

IDENTIFICATION OF LINEAR TIME-VARYING SY
✍ K. Liu πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 275 KB

This paper is concerned with the identification of linear time-varying systems. The discrete-time state space model of freely vibrating systems is used as an identification model. The focus is placed on identifying successive discrete transition matrices that have the same eigenvalues as the origina

Time domain representations of nonlinear
✍ Reuven Meidan πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 788 KB

In this work time domain representations for nonlinear time-varying systems are pursued. The analysis is carried out in th,e framework of Schu\*artz's distribution theory. Two approaches are investigated. The first is restricted to semiadditive systems. The other is based on the generalized impulse

Identification and model reduction of ti
✍ Shahriar Shokoohi; Leonard M. Silverman πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 944 KB

Two model reducnon schemes ywld an tdenncal reduced model, and one of the methods prowdes an zdentlficatlon algorithm for a two-dtmenswnal pulse response sequence Key Words--Discrete time systems, identification, linear systems, system-order reduction, time-varying systems, stabthty Abstract--Linear