Electrostatic Transducers for Ultrasonics

1960 ◽  
Vol 32 (7) ◽  
pp. 939-940 ◽  
Author(s):  
Wayne M. Wright
Keyword(s):  
Electrostatic Transducers

Energy Shaping Control of Electrostatic Membrane Vibrations

1999 ◽  
Author(s):  
Andreas Kugi ◽  
Kurt Schlacher ◽  
Manfred Kaltenbacher ◽  
Reinhard Lerch
Keyword(s):  
Nonlinear Distortion ◽  
Supply Voltage ◽  
Mathematical Formulation ◽  
Voltage Source ◽  
Membrane Electrode ◽  
Closed Loop System ◽  
Feedback Controllers ◽  
Electrostatic Transducers ◽  
Membrane Vibrations ◽  
The Mathematical Model

Abstract A strong analytical mathematical formulation of electrostatic transducers is the necessary prerequisite for the design of feedback controllers. Based on the theory of Hamiltonian systems the mathematical model of a typical electrostatic transducer configuration with a moving membrane electrode and a rigid backplate electrode is derived. It is a well known fact that an increase in the sensitivity of the transducer often brings about also an increase in the nonlinear distortion and may occur a sticking of the membrane to the backplate electrode. In this paper, we propose a concept that gives a possible solution for these undesirable effects by using a controlled voltage source for the supply voltage of the transducer. The controller is designed by shaping the potential energy of the closed loop system. The change of the capacity of the transducer due to the motion of the membrane is considered as the sensor output.

Electrostatic Transducers for Bioacoustical Instrumentation

1971 ◽  
Vol 50 (1A) ◽  
pp. 127-127 ◽  
Author(s):  
J. Palin ◽  
R. R. Fay ◽  
J. A. Simmons
Keyword(s):  
Electrostatic Transducers

scholarly journals Ultrasonic imaging in air using fan-beam tomography and electrostatic transducers

Ultrasonics ◽  
2002 ◽  
Vol 40 (1-8) ◽  
pp. 507-511 ◽  
Author(s):  
Paul Ingleby ◽  
William M.D. Wright
Keyword(s):  
Ultrasonic Imaging ◽  
Electrostatic Transducers

Preliminary studies for the design of electrostatic transducers.

2010 ◽  
Vol 128 (4) ◽  
pp. 2339-2339
Author(s):  
Martin Harris ◽  
Daniel Sinnewald ◽  
Daniel Gavinowich ◽  
Pablo Gomez
Keyword(s):  
Electrostatic Transducers

Electrostatic transducers

1982 ◽  
Vol 71 (2) ◽  
pp. 528-528
Author(s):  
John P. Civitello
Keyword(s):  
Electrostatic Transducers

scholarly journals Wireless recording of the calls of Rousettus aegyptiacus and their reproduction using electrostatic transducers

2010 ◽  
Vol 5 (2) ◽  
pp. 026001 ◽  
Author(s):  
S M Whiteley ◽  
D A Waters ◽  
G Hayward ◽  
S G Pierce ◽  
I Farr
Keyword(s):  
Electrostatic Transducers ◽  
Wireless Recording
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