Honda Motor Co., Ltd.
ESTIMATION DEVICE AND STRADDLE-TYPE VEHICLE

Abstract:

A device detects a behavior of a straddle-type vehicle in a yaw direction and in a roll direction, determines whether a traveling state of the straddle-type vehicle is a first state or a second state closer to a straight traveling state than the first state, and estimates a turning radius of the straddle-type vehicle. In a case where it is determined that the traveling state is the first state, a turning radius is estimated by a first method based on a detection result of the behavior in the yaw direction. In a case where it is determined that the traveling state is the second state, the turning radius is estimated by a second method based on a detection result of the behavior in the roll direction.