Active control of structural power flow. Why not!

1991 ◽  
Vol 90 (4) ◽  
pp. 2270-2270
Author(s):  
J. M. Cuschieri
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Structural Power

Real‐time active control of structural energy density and structural power flow.

2010 ◽  
Vol 127 (3) ◽  
pp. 1953-1953
Author(s):  
Daniel A. Manwill ◽  
Jeff M. Fisher ◽  
Scott D. Sommerfeldt ◽  
Kent L. Gee ◽  
Jonathan D. Blotter
Keyword(s):  
Energy Density ◽  
Real Time ◽  
Active Control ◽  
Power Flow ◽  
Structural Power

Dynamic Analysis of an Active Flexible Isolation System

2003 ◽  
Author(s):  
Kongjie Song ◽  
Lingling Sun ◽  
Yuguo Sun ◽  
Bing Zhang
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Low Frequency ◽  
Coupled System ◽  
Isolation System ◽  
Active Isolation ◽  
Dynamic Modification ◽  
Mobility Method ◽  
Feed Forward Controller ◽  
Flexible Foundation

This paper is dedicated to the structure dynamic modification in an active isolation system supported by a flexible foundation, in order to improve the effectiveness of the active control strategy. The coupled vibration between machine-sprung and flexible foundation substructure is examined, using the subsystem mobility method. The vibration transmission in this coupled system is presented in terms of power flow. The interaction between structure controlled and the adaptive feed-forward controller is investigated theoretically. The numerical results show that: the location of the active mounts and the first mode frequency of the flexible foundation have evident influence on the effect of active control, especially at low-frequency band.

Active control of a distributed-parameter structure using vortex power flow confinement

1997 ◽  
Vol 102 (3) ◽  
pp. 1648-1656 ◽  
Author(s):  
Nobuo Tanaka ◽  
Yoshihiro Kikushima ◽  
Masaharu Kuroda ◽  
Neil J. Fergusson
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Distributed Parameter

scholarly journals Localizing Energy Sources and Sinks in Plates Using Power Flow Maps Computed From Laser Vibrometer Measurements

1998 ◽  
Vol 5 (4) ◽  
pp. 235-253 ◽  
Author(s):  
J.R.F. Arruda ◽  
P. Mas
Keyword(s):  
Power Flow ◽  
Finite Difference Methods ◽  
Laser Vibrometer ◽  
Structural Power ◽  
Sources And Sinks ◽  
Vibration Data ◽  
Flow Maps ◽  
Fourier Series Approximation ◽  
Spatial Derivatives ◽  
Difference Methods

This paper presents an experimental method especially adapted for the computation of structural power flow using spatially dense vibration data measured with scanning laser Doppler vibrometers. In the proposed method, the operational deflection shapes measured over the surface of the structure are curve-fitted using a two-dimensional discrete Fourier series approximation that minimizes the effects of spatial leakage. From the wavenumber-frequency domain data thus obtained, the spatial derivatives that are necessary to determine the structural power flow are easily computed. Divergence plots are then obtained from the computed intensity fields. An example consisting of a rectangular aluminum plate supported by rubber mounts and excited by a point force is used to appraise the proposed method. The proposed method is compared with more traditional finite difference methods. The proposed method was the only to allow the localization of the energy source and sinks from the experimental divergence plots.

Experiments on the active control of flexural wave power flow

1987 ◽  
Vol 112 (1) ◽  
pp. 187-191 ◽  
Author(s):  
W. Redman-White ◽  
P.A. Nelson ◽  
A.R.D. Curtis
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Flexural Wave ◽  
Wave Power

Structural power flow analysis of Timoshenko beam with an open crack

2006 ◽  
Vol 297 (1-2) ◽  
pp. 215-226 ◽  
Author(s):  
X. Zhu ◽  
T.Y. Li ◽  
Y. Zhao ◽  
J.X. Liu
Keyword(s):  
Timoshenko Beam ◽  
Power Flow ◽  
Flow Analysis ◽  
Open Crack ◽  
Structural Power ◽  
Power Flow Analysis
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