Ultrasonic apparatus for sector scanning

Details Ultrasonic apparatus for sector scanning Ultrasonic apparatus for sector scanning

1980-09-29

1983-05-31

Ciariante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73633, G01N 2904

Patent

active

043855210

ABSTRACT:
In the exemplary embodiments, the apparatus comprises: an ultrasonic transducer arrangement; a drive arranged to pivotably displace the transducer arrangement within a predetermined angular range; an actual-value generator for supplying a signal (F.sub.I (.rho.) dependent upon the angular position of the transducer arrangement within the said range; a desired-value generator for supplying a signal (F.sub.S (.rho.)) representing a desired angular position of the transducer arrangement within the said range; and a control for controlling the drive in dependence upon such signals from the actual-value and desired-value generators. The actual-value and desired-value generators are adapted to supply respective signals having the same or similar forms over a relatively large signal range within the said range.

REFERENCES:
patent: 4034744 (1977-07-01), Goldberg
patent: 4106492 (1978-08-01), Schuette et al.
patent: 4151834 (1979-05-01), Sato et al.
Matzuk et al., "Novel Ultrasonic Real-Time Scanner featuring Servo Controlled Transducers Displaying a Sector Image", Ultrasonics, Jul. 1978.

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