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ROTATION DETECTION APPARATUS, ROTATION ANGLE DETECTION APPARATUS, AND ELECTRIC POWER STEERING SYSTEM | DREHNACHWEISVORRICHTUNG, DREHWINKELERFASSUNGSVORRICHTUNG UND ELEKTRISCHES SERVOLENKSYSTEM | APPAREIL DE DÉTECTION DE ROTATION, APPAREIL DE DÉTECTION D'ANGLE DE ROTATION ET SYSTÈME ÉLECTRIQUE DE DIRECTION ASSISTÉE

Patentnummer:EP3076135B1
IPC Hauptklasse:G01D000514
Anmelder:JTEKT Corporation (0)
5-8, Minamisemba 3-chome; Chuo-ku, , Osaka-shi; Osaka 542-8502, JP
Erfinder:
Anmeldung:29.03.16
Offenlegung:31.03.15
Patenterteilung:24.01.18

Abstract / Hauptanspruch
A rotation detection apparatus, a rotation angle detection apparatus, and an electric power steering system are provided which allow appropriate detection of an abnormality in a portion that detects rotation of a rotating shaft. A first arithmetic circuit (51) calculates a rotating direction (D1) and a number of rotations (N1) of the rotating shaft (12a) based on a change in a combination of positivity and negativity of a first electric signal (S1) (first sine signal) and a third electric signal (S3) (first cosine signal). A second arithmetic circuit (52) calculates a rotating direction (D2) and a number of rotations (N2) of the rotating shaft (12a) based on a change in a combination of positivity and negativity of a second electric signal (second sine signal) and a fourth electric signal (second cosine signal). An abnormality determination circuit (53) determines whether each of the first and second arithmetic circuits (51) and (52) is abnormal based on the two rotating directions (D1) and (D2) calculated by the first and second arithmetic circuits (51) and (52), respectively.

EP3076135B1


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