Ultrasound transducer and drive system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 30, 1984
Grant Date -
N/A
app pub date -
Sep 20, 1982
filing date -
Sep 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrasound probe includes an acoustical mirror that deflects an ultrasound beam generated by an ultrasound crystal toward an object under examination. The probe includes a thin flat motor whose rotor is controlled by a control system. The control system creates commutating signals that are applied to stator coils of the motor. An error signal that is related to the difference between the actual and desired positions of the object rotated by the motor is applied to the commutating signals to alter their amplitude or polarity to change the torque developed by the motor.
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Family
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Cited Art Landscape
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