Apparatus for detecting ultrasonic vibration

Details Apparatus for detecting ultrasonic vibration Apparatus for detecting ultrasonic vibration

1984-06-21

1986-04-01

Birmiel, Howard A.

Measuring and testing

Vibration

Sensing apparatus

73649, 73652, 73661, 181107, 324208, 310325, G01H 1102

Patent

active

045790000

ABSTRACT:
This invention is an apparatus for detecting the vibration of a Langevin type electrostrictive ultrasonic vibrator comprising a system made up of an iron core, a coil and a magnet surrounding but not connected to a magnetic projection attached to the rear end of the vibrator. The vibration of the magnetic projection is detected by the system surrounding it and the resulting induced voltage is fed back to a control to maintain the vibration at the desired resonant frequency.

REFERENCES:
patent: 3633053 (1972-01-01), Peters
patent: 3918298 (1975-11-01), Petersen et al.
patent: 4034827 (1977-07-01), Leerskov, Jr. et al.
patent: 4173749 (1979-11-01), Corkhill
patent: 4301887 (1981-11-01), Fiske, Jr.
patent: 4361045 (1982-11-01), Iwasaki

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