Accession Number : ADA256155


Title :   Method for Transducer Transient Suppression. I. Theory


Descriptive Note : Journal article


Corporate Author : NAVAL RESEARCH LAB ORLANDO FL UNDERWATER SOUND REFERENCE DETACHMENT


Personal Author(s) : Piquette, Jean C.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA256155


Report Date : SEP 1992


Pagination or Media Count : 14


Abstract : The problem of driving a transducer in such a way as to produce a tone burst of steady-sate sound radiation in the surrounding fluid medium is considered. The goal is to determine the driving voltage waveform to apply to a transducer to produce an acoustic pressure waveform in the fluid that is a segment of a steady-state sine wave, beginning and ending at zero crossings of the sine, i.e., the usual turnon and turnoff transients are suppressed. The theoretical driving voltage waveform for a spherical transducer is shown to consist of a sum of a pedestal voltage, a ramp voltage, and a sinusoidal voltage that is phase shifted with respect to the sinusoid appearing in the fluid. Both theoretical and numerical calculations are given here. The following paper presents results of experimental measurements. The measurements were carried out on several spherical transducers (one of which was selected for presentation) and on an array of piezoelectric tubes. These experiments confirm the validity of the theory. Transient suppression, Transient radiation, Calibration, Acoustical measurements.


Descriptors :   *TRANSIENTS , *TRANSDUCERS , *SUPPRESSION , STEADY STATE , REPRINTS , MEASUREMENT , RADIATION , SCATTERING , THEORY , WAVEFORMS , ARRAYS , VOLTAGE , REFLECTION , RUPTURE , PHASE , PRESSURE , SOUND , ACOUSTICS , FLUIDS , TUBES , SINE WAVES , RAMPS , CALIBRATION , CROSSINGS


Subject Categories : ELECTRICAL AND ELECTRONIC EQUIPMENT
      ACOUSTICS
      ELECTRICITY AND MAGNETISM


Distribution Statement : APPROVED FOR PUBLIC RELEASE