Electronic torque wrench and overshoot compensation circuit...

Details Electronic torque wrench and overshoot compensation circuit... Electronic torque wrench and overshoot compensation circuit...

G - Physics

01

L

G01L 3/00 (2006.01) B25B 23/142 (2006.01) G01R 19/165 (2006.01)

Patent

CA 2062215

Abstract of the Disclosure A torque wrench has a battery-powered sensing circuit which produces a torque signal proportional to the level of the torque applied. A reference signal corresponding to a predetermined torque level is subtracted from the torque signal to produce a difference signal which is, in turn, compared with a compensation signal which is proportional to the rate of change of the torque signal and is produced by differentiating the torque signal. When the value of the difference signal exceeds the value of the compensation signal, an indicator is triggered to produce a tactile indication, the indication being produced prior to the time that the torque signal reaches the reference level by a predetermined time period.

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