ULTRASONIC TORQUE SENSOR

PURPOSE:To obtain an ultrasonic torque sensor capable of accurately measuring torque over a range from minute torque to large torque with high accuracy, capable of measuring both of static torque and dynamic torque and not requiring a correction circuit correcting the effect of ambient temp. CONSTIT...

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Bibliographic Details
Main Authors SARUWATARI KATSUMI, TAKESUTE TAKAAKI
Format Patent
LanguageEnglish
Published 05.04.1994
Edition5
Subjects
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
PHYSICS
TESTING
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Summary:PURPOSE:To obtain an ultrasonic torque sensor capable of accurately measuring torque over a range from minute torque to large torque with high accuracy, capable of measuring both of static torque and dynamic torque and not requiring a correction circuit correcting the effect of ambient temp. CONSTITUTION:Two sets of ultrasonic transmitters 32a, 34a and ultrasonic receivers 32b, 34b are arranged on the surface of a piezoelectric element 30 so that an ultrasonic wave propagates in directions mutually crossing the surface of the piezoelectric element 30 at a right angle. Further, feedback circuits 36a, 36b applying the signals received by the ultrasonic receivers 32b, 34b to the ultrasonic transmitters 32a, 34a are provided.
Bibliography:Application Number: JP19920240430