Abstract: A controller for an actuator includes a lock detecting unit configured to detect a lock state of a motor and an abnormality detecting unit configured to detect an abnormality of the actuator. The abnormality detecting unit determines that an abnormality of the actuator is detected when it is determined that an operating position of the actuator does not change between a first lock position at which the lock state of the motor in a first rotation direction is detected and a second lock position at which the lock state of the motor in a second rotation direction is detected.

Abstract: A printed circuit board accommodation casing includes: a support surface that abuts on a first planar portion of a printed circuit board; a side wall portion located outside in a planar direction of the printed circuit board, the first planar portion of which is abutted by the support surface; and an engagement protrusion formed on the side wall portion, in which a crushing margin, which is crushed against the first planar portion of the printed circuit board, is set on the engagement protrusion at a location where the support surface does not abut on the first planar portion of the printed circuit board.

Abstract: A steering apparatus includes: a steering column that rotatably supports a steering shaft; and a controller provided with an accommodation case fixed to an outer peripheral surface of the steering column, in which a pair of engagement protrusions, which face each other, are provided on the outer peripheral surface of the steering column, an insertion portion is provided in the accommodation case to be inserted between the engagement protrusions, and the insertion portion is provided with a fitting portion having a crushing margin which is crushed by the engagement protrusions when the insertion portion is inserted between the engagement protrusions.

Abstract: A steering apparatus includes: a steering column that rotatably supports a steering shaft; and a controller provided with an accommodation case fixed to an outer peripheral surface of the steering column, in which a pair of engagement protrusions, which face each other, are provided on the outer peripheral surface of the steering column, an insertion portion is provided in the accommodation case to be inserted between the engagement protrusions, and the insertion portion is provided with a fitting portion having a crushing margin which is crushed by the engagement protrusions when the insertion portion is inserted between the engagement protrusions.

Abstract: A controller for an actuator includes a lock detecting unit configured to detect a lock state of a motor and an abnormality detecting unit configured to detect an abnormality of the actuator. The abnormality detecting unit determines that an abnormality of the actuator is detected when it is determined that an operating position of the actuator does not change between a first lock position at which the lock state of the motor in a first rotation direction is detected and a second lock position at which the lock state of the motor in a second rotation direction is detected.

Abstract: A printed circuit board accommodation casing includes: a support surface that abuts on a first planar portion of a printed circuit board; a side wall portion located outside in a planar direction of the printed circuit board, the first planar portion of which is abutted by the support surface; and an engagement protrusion formed on the side wall portion, in which a crushing margin, which is crushed against the first planar portion of the printed circuit board, is set on the engagement protrusion at a location where the support surface does not abut on the first planar portion of the printed circuit board.