| 摘要 |
An electric power steering unit includes: a controller 4 for controlling a drive of an electric motor 16; and a terminal base 4 B, which is provided in the controller 4, which constitutes a signal terminal of the controller 4, wherein the terminal base 4 B fastens a terminal by means of fastening with a bolt. Terminals of pieces of harness 16 A to 16 C extending from the electric motor 16 are fastened to output terminals 23 A to 23 C on the terminal base 4 B by means of fastening bolts. The electric power steering unit more preferably includes: a contact resistance detection member ( 35, 36, 37 ) for detecting a contact resistance between each output terminal 23 A to 23 C and each terminal TN of the harness 16 A to 16 C; and an electric current control member ( 21, 22 ) for controlling a drive current supplied to the electric motor 16 with detection information obtained by this detection member.
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