Generic models of spatially distributed sensors and actuators
作者:
Ilene J. Busch‐Vishniac,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1986)
卷期:
Volume 80,
issue S1
页码: 6-6
ISSN:0001-4966
年代: 1986
DOI:10.1121/1.2023926
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Traditional models of sensors and actuators typically represent the transducer by a series of interconnected, discrete, lumped elements. Such models are useful because the characteristic behavior of the transducer is described by ordinary differential equations. However, these models are limited to low‐frequency regimes because they contain a finite number of elements. Further, they are not easily adaptable to transducers in which the behavior is explicitly a consequence of the continuum nature of transducing element, such as acoustic horns. Presented here are generic models of transducers in which the continuous nature of the transducer is stressed. The models may be classed into two types: those which apply to transducers in which the coupling between locations occurs only through the input and output ports, and those in which there is mechanical coupling between transducer locations as well. The former case may be modeled using coupled two‐port theory, and the latter using augmented transmission lines. These techniques allow for spatially varying physical parameters, and apply regardless of the transducer type, function, and geometry.
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