Analysis and design of Piezoelectric sonar transducers.
Abstract
In this study techniques are developed for the
analysis and design of piezoelectric sonar transducers based
on equivalent circuit representations.
For the purposes of analysis, equivalent circuits
capable of accurately representing every element of a
transducer in the full operating frequency range, are
developed. The most convenient fashion in which these
equivalents could be derived is also discussed. For the
purposes of design the accurate equivalents are approximated
by L-C-R circuits. The limits of both representations
are discussed in detail.
The technique of analysis developed is capable of
determining the frequency characteristics as well as the
transient response to any electrical or acoustic input
which can be specified analytically or numerically in the
time domain.
The design technique is based on the formulation of
a ladder-type generalized circuit incorporating the
essential components of any transducer. The generalised
circuit is then used to extract particular bandpass filter
designs which possess wide passbands and which are
mechanically realizable. By this procedure it is found
possible to design transducers exhibiting bandwidths of
around 100%.
The performance of a 'test' transducer constructed
to verify both analysis and design theories is also
discussed.
Authors
Rodrigo, Gerard ChristopherCollections
- Theses [3704]