STROKE SENSOR AND BRAKE SYSTEM AND STEERING SYSTEM FOR VEHICLE USING THE SAME

A stroke sensor that allows adjustment of the magnetic field distribution without changing the positions of the magnets is provided. Stroke sensor has magnets A, B, and sensor A that detects a magnetic field that is generated by magnets A, B. Magnets A, B are movable relative to sensor A in first direction X. Magnet A has surface A that faces sensor A in second direction Z, magnet B has surface B that faces sensor A in second direction Z, and surface A and surface B have different polarities. A position in first direction X at which magnetic field intensity in second direction Z is zero is positioned between reference axis RA and magnet B. Reference axis RA is parallel to second direction Z and passes through middle point MP of minimum section S that includes magnets A, B in first direction X.