Magnetic sensor 1 has magnetic field detection element 7 that detects a magnetic field that is generated by magnet 2 that rotates about central axis C; and substrate 10 that has first side P1 and second side P2 that is a reverse side of the first side P1, wherein second side P2 includes first slope PK1 that is inclined with respect to first side P1. Magnetic field detection element 7 is provided along first slope PK1. Magnet 2 is separated from central axis C and polarities of magnet 2 alternate in a circumferential direction about central axis C. First side P1 is substantially parallel to central axis C. First slope PK1 is inclined with respect to first side P1 by an average angle of 0. In a plane perpendicular to central axis C, intensity of the magnetic field where magnetic field detection element 7 is positioned changes as magnet 2 rotates, and the relation(1/Ks)×0.8≤MFR≤(1/Ks)×1.2(Ks=sin θ)is satisfied, where MFR is a ratio of a maximum value to a minimum value of the intensity of the magnetic field in the plane.
MAGNETIC SENSOR, ROTATION ANGLE DETECTION APPARATUS, AND BRAKE SYSTEM USING ROTATION ANGLE DETECTION APPARATUS
2024-01-25
Patent
Electronic Resource
English
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