Straddled vehicle with a handlebar and electric steering device

An electric steering device configured to be used in a straddled vehicle that includes

• a vehicle body having a handlebar that is rotatable, a maximum operation angle of the handlebar from a handle neutral position being less than 180 degrees, the handle neutral position being a position of the handlebar in which the straddled vehicle is moving straight ahead;
• a steerable wheel that is supported by the vehicle body, operation of the handlebar by a rider of the straddled vehicle being transmitted mechanically to the steerable wheel, to thereby steer the steerable wheel;
• the electric steering device comprising:
• an actuator configured to apply a steering assisting force to the steerable wheel in accordance with the operation of the handlebar by the rider of the straddled vehicle;
• and
• a control device that controls the actuator by outputting a first physical quantity, which is a physical quantity related to the steering assisting force, in accordance with a second physical quantity, which is a physical quantity related to the operation of the handlebar,
• the control device being configured to change a relationship between the second physical quantity and the first physical quantity, during which referring to a running condition of the straddled vehicle is not necessary, by performing (1) or (2), or both, below, in response to an instruction received from an outside of the straddled vehicle or fulfillment of a condition that restrains behaviors of the actuator:
• (1) setting or changing a dead band, which is a predetermined range of the second physical quantity in which the first physical quantity is not outputted even with the operation of the handlebar;
• and
• (2) setting or changing an output increasing range in which as the second physical quantity increases, the first physical quantity outputted in accordance with the second physical quantity increases.