Title:
磁気弾性トルクセンサー
Document Type and Number:
Japanese Patent JP4357841
Kind Code:
B2
Abstract:
A flux-gate magnetometer torque sensor is provided having a rotatable shaft to which a torque force is to be applied, a sleeve of conductive foil affixed to the surface of the shaft over the magnetically active regions, a plurality of saturable magnetic wires or strips mounted to the rotatable shaft and parallel to an axis of rotation, sensor circuitry containing an oscillator for generating a signal, a divider coupled to the oscillator for dividing the frequency of the signal by two, a first and second coil each surrounding a different section of the rotatable shaft and having an input coupled to the divider output, a multiplier having inputs coupled to outputs of the first coil, the second coil, and the oscillator, and an integrator having an input coupled to the multiplier output and an output coupled to both outputs of the first and second coils, wherein the output voltage of the integrator corresponds to the torque being applied to the rotatable shaft.
Inventors:
David crape
Application Number:
JP2002589754A
Publication Date:
November 04, 2009
Filing Date:
April 26, 2002
Export Citation:
Assignee:
Method Electronics Incorporated
International Classes:
G01L3/10; B62D1/16
Domestic Patent References:
| JP2000321154A | ||||
| JP9511064A |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
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