Controller and control method

A control method for controlling a rotational frequency of a wheel (4) of a straddle-type vehicle (100), the control method comprising:

• an acquisition step of acquiring posture information at a time when the straddle-type vehicle (100) jumps;
• and
• a control step (S519) of executing automatic posture control by a controller (30) when the straddle-type vehicle (100) jumps, the automatic posture control controlling a posture of the straddle-type vehicle (100) by increasing or reducing the rotational frequency of the wheel (4) in accordance with the posture information acquired in the acquisition step, and further comprising:
• an intention determination step (S517, S525) of determining whether a driver has intention to control the posture of the straddle-type vehicle (100) at the time when the straddle-type vehicle (100) jumps without relying on the automatic posture control, wherein
• in the case where it is determined that the driver has the intention, the automatic posture control is prohibited in the control step (S519).