Now showing items 1-10 of 14
Structural-acoustic control system design by multi-level optimization
(Acoustical Society of America, 1998-08-01)
A multi-level optimization approach for the design of feedforward active structural acoustic control (ASAC) systems is presented. The formulation takes advantage that both the structural response and the acoustic radiation ...
A broadband passive-active sound absorption system
(Acoustical Society of America, 1999-11-01)
In recent years, hybrid absorption systems have been implemented which achieve high sound absorption over a broad frequency range. This work is an experimental study of a broadband hybrid absorption system which is comprised ...
Sensitivity analysis for feedforward control system design
(Acoustical Society of America, 1995-12-01)
A sensitivity analysis for feedforward-controlled finite domain systems is presented. Using an analytical approach, the sensitivity of a controlled system to variations in the design variables of the control inputs and the ...
Response to "Comments on "Design of active structural acoustic control systems by eigenproperty assignment [J. Acoust. Soc. Am. 99, 1785-1788 (1996)]
(Acoustical Society of America, 1996-03-01)
The authors thank Professor Cunefare for his interest in our paper on the design of active structural acoustic control systems. This Letter is to clarify questions raised in his Comments. (C) 1996 Acoustical Society of America.
Dynamic behavior of structural-acoustic systems in feedforward control of sound radiation
(Acoustical Society of America, 1992-07-01)
The dynamic characteristics of a beam under active control to minimize the coupled sound radiation is investigated. The beam is subjected to a harmonic point force and the resulting radiated field minimized by utilizing a ...
Active structural acoustic control of broadband disturbances
(Acoustical Society of America, 1992-09-01)
A control design technique is developed to actively suppress the acoustic power radiated from a structure, with negligible fluid loading, that is persistently excited by narrow-band or broadband disturbances. The problem ...
Causality analysis of feedforward-controlled systems with broadband inputs
(Acoustical Society of America, 1993-07-01)
In recent years adaptive feedforward control algorithms have been successfully implemented to attenuate the response of systems under persistent disturbances such as single and multiple tones as well as random inputs. ...
Design of active structural acoustic control systems using a nonvolumetric eigenproperty assignment approach
(Acoustical Society of America, 1997-04-01)
Sound radiation of planar radiators such as beams and plates is known to be directly related to the velocity distribution over the structural surface at low frequencies. For example, nonvolumetric modes correspond to poor ...
Active control of sound radiation from a plate using a polyvinylidene fluoride volume displacement sensor
(Acoustical Society of America, 1998-03-01)
This paper presents a new volume displacement sensor (made of shaped strips of PVDF film) and the experimental implementation of this sensor in an active control system. A design strategy for a PVDF sensor detecting the ...
Design of active structural acoustic control systems by eigenproperty assignment
(Acoustical Society of America, 1994-09-01)
The traditional design approach of feedforward control systems involves the selection of number and location of the actuators and sensors based on some physical understanding of the system. This empirical methodology yields ...