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Non-contact torque measurement on a rotating shaft incorporating a mechanical resonator

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3 Author(s)
N. Whitehead ; Agco Ltd., Coventry, UK ; B. E. Jones ; D. Rees

A contactless method of torque measurement on a rotating shaft has been developed. A triple-beam metallic resonating tuning fork mounted on a stiff torsion bar in-line with the shaft is used. An inductive drive and capacitive pick-up link with a simple phase lock loop provide the frequency output at about 4.5 kHz. Tests have been performed for static torque up to 13 Nm with sensitivity 60 Hz/Nm and for rotational torque up to 4.5 Nm with sensitivity 55 Hz/Nm (rotational speeds up to 150 rev/min). The design methodology, construction and initial results are discussed, and further developments are outlined

Published in:

Innovative Pressure, Force and Flow Measurements (Ref. No. 1999/089), IEE Colloquium on

Date of Conference: