Title:
ステアリング角度センサ
Document Type and Number:
Japanese Patent JP5269781
Kind Code:
B2
Abstract:
An apparatus for determining an angular position of a shaft, such as a steering column, comprises a coil assembly, a coil support, and a coupler element having a coupler angular position correlated with the angular position of the shaft. The coil assembly includes a transmitter coil and at least one receiver coil, the coupler element modifying an inductive coupling between the transmitter coil and at least one receiver coil. A signal processing circuit receives coil signals from the coil assembly and determines the angular position using a receiver signal, and a reference signal that is correlated with an axial displacement but otherwise substantially independent of angular position. The reference signal can be used for ratiometric sensing, to substantially eliminate common mode factors, and also to determine the number of revolutions of the shaft. A combined angle and torque sensor further determines a twist angle across a torsion bar.
Inventors:
Lee June Kay
Application Number:
JP2009517467A
Publication Date:
August 21, 2013
Filing Date:
June 26, 2007
Export Citation:
Assignee:
KS Technologies Company
International Classes:
G01B7/30; B62D1/04; B62D5/04
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Foreign References:
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Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda