Title:
ABNORMALITY DIAGNOSTIC DEVICE OF ROTATION ANGLE SENSOR
Document Type and Number:
Japanese Patent JP2023106979
Kind Code:
A
Abstract:
To provide an abnormality diagnostic device of a rotation angle sensor of which abnormality detection accuracy is improved.SOLUTION: An abnormality diagnostic device 400 determines the presence or absence of an abnormality of a rotation angle sensor (resolver) 320 on the basis of a sine signal and a cosine signal which are output from the rotation angle sensor 320 provided in a motor 300. The abnormality diagnostic device includes: a high-speed data acquisition section 401 that acquires a sine signal and a cosine signal in a sampling period of not smaller than six times of a period of an excitation signal input to the rotation angle sensor 320; a square sum calculation section 403 that respectively squares and adds data on the sine signal and the cosine signal acquired in the high-speed data acquisition section 401 to calculate a square sum calculation result; and an abnormality determination section 405 that determines the presence or absence of an abnormality of the rotation angle sensor 320 on the basis of a calculation result of the square sum calculation section 403.SELECTED DRAWING: Figure 2
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Inventors:
MATSUI YAMATO
MITSUI TOSHISADA
MITSUI TOSHISADA
Application Number:
JP2022008047A
Publication Date:
August 02, 2023
Filing Date:
January 21, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD
International Classes:
G01D5/244; G01D5/20
Attorney, Agent or Firm:
Patent Attorney Corporation Kaichi