Accession Number : AD0634699

Title :   ANALYSIS AND HIGH FREQUENCY CORRECTION OF BARMAGNET VELOCITY-METER RESPONSE.

Descriptive Note : Research and development rept.,

Corporate Author : DAVID TAYLOR MODEL BASIN PORTSMOUTH VA UNDERWATER EXPLOSIONS RESEARCH DIV

Personal Author(s) : Gordon, J. D.

Report Date : APR 1966

Pagination or Media Count : 30

Abstract : The output of the bar-magnet velocity meter, used to measure ship and model structural velocity transients due to the shock of an underwater explosion, is distorted by the electrical and structural characteristics of the meter. This report contains a derivation and analysis of the velocity-meter transfer function by treating the meter distributed mechanical system with Laplace transform techaniques. The output signal distortion due to the high frequency structural resonances of the transducer is discussed. A practical way of compensating for this distortion is developed and demonstrated with an analog computer study. Conclusions drawn on theoretical grounds are then verified by tests on an actual velocity meter. The correction method derived is particularly well suited for use with analog computational procedures. (Author)

Descriptors :   (*VELOCITY, MEASUREMENT), (*MEASURING INSTRUMENTS, VELOCITY), CORRECTIONS, INTEGRAL TRANSFORMS, SHOCK WAVES, TRANSDUCERS, DISTORTION, ANALOG SYSTEMS, RESONANCE, DAMPING, MAGNETS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE