Title:
MOTOR DEVICE
Document Type and Number:
Japanese Patent JP2017009292
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor device having a slip ring for performing both current supply to a rotor and output extraction of a torque sensor.SOLUTION: The motor device includes: a motor having a pulley 14, wiring 15, a shaft provided with a slip ring 16, a rotor coil 12a fixed to the shaft, a stator coil provided in the periphery of the rotor coil 12a, and a brush 17 electrically connected to the slip ring; a torque sensor 30 provided at the shaft for converting a distortion generated in the shaft into an electrical signal; a high frequency modulation circuit 40 provided at the shaft, and electrically connected to the wiring for modulating the electrical signal of the torque sensor into a high frequency signal having a higher frequency than currents running to the rotor coil; a high-pass filter 51 for outputting only the high frequency signal from the currents running to the brush; and restoration parts 52 and 53 for restoring the high frequency signal output from the high-pass filter into the electric signal of the torque sensor.SELECTED DRAWING: Figure 2
Inventors:
MAKINO AKINOBU
Application Number:
JP2015121429A
Publication Date:
January 12, 2017
Filing Date:
June 16, 2015
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01L5/00; G01L3/10; H02K11/20; H02K19/36; H02P27/06
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo