Abstract: An operation device for a vehicle includes an operation body configured to be displaced by being operated so as to turn the vehicle according to a displacement of the operation body while the vehicle is being manually operated, a detector configured to detect the displacement of the operation body so as to turn the vehicle according to the displacement of the operation body while the vehicle is being manually operated, and a determination section configured to determine a state of the operation body and the detector based on the displacement of the operation body as detected by the detector while the vehicle is in non-manual operation.

Abstract: A rotation angle detection device includes a driving gear rotated integrally with a rotary body, a first driven gear and a second driven gear coupled to the driving gear and rotated in cooperation with the driving gear, a first sensor that detects rotation of the first driven gear and generates a first sensor output, and a second sensor that detects rotation of the second driven gear and generates a second sensor output. An initialization method includes adjusting zero points of the first and second sensor output obtained at positions of rotation references of the first and second driven gears, measuring a deviation amount occurring in a calculation of rotation information of at least one of the first and second driven gears, and correcting the zero point of at least one of the first and second sensor outputs based on the measured deviation amount.

Abstract: An autonomous driving device allows for autonomous driving of a vehicle. The autonomous driving device includes a monitoring unit and a switching unit. The monitoring unit monitors an operation state of a driving-system operation device of the vehicle. The switching unit switches a driving mode of the vehicle to manual driving, in which a user drives the vehicle, when the monitoring unit confirms that the driving-system operation device has been operated in accordance with a specified procedure under a condition that a vehicle speed is lower than or equal to a specified value.

Abstract: A rotation angle detection device includes a driving gear rotated integrally with a rotary body, a first driven gear and a second driven gear coupled to the driving gear and rotated in cooperation with the driving gear, a first sensor that detects rotation of the first driven gear and generates a first sensor output, and a second sensor that detects rotation of the second driven gear and generates a second sensor output. An initialization method includes adjusting zero points of the first and second sensor output obtained at positions of rotation references of the first and second driven gears, measuring a deviation amount occurring in a calculation of rotation information of at least one of the first and second driven gears, and correcting the zero point of at least one of the first and second sensor outputs based on the measured deviation amount.