Provided is a rotation angle detection device including: a coefficient identification unit configured to identify, based on a sine signal and a cosine signal which are based on a rotation angle of a rotating body, coefficients of frequency components included in the sine signal and the cosine signal; a correction value calculation unit; and a rotation angle calculation unit. The coefficient identification unit is configured to identify, for each of integers M and N which satisfy a relationship in which M+N is equal to a positive constant, and each of which is equal to or larger than 0, a coefficient of each of (M+N−1)th order components included in the sine signal and the cosine signal, based on results of application of low-pass filters to products of an M-th power of the sine signal and an N-th power of the cosine signal.


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    Title :

    ROTATION ANGLE DETECTION DEVICE, AND ELECTRIC POWER STEERING DEVICE INCLUDING SAME ROTATION ANGLE DETECTION DEVICE


    Contributors:

    Publication date :

    2022-01-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen





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