An oscillation-type vehicle includes a front vehicle body that suspends a front wheel in a steerable manner, a rear vehicle body that suspends left and right drive wheels, and an oscillation mechanism that causes the front vehicle body and the rear vehicle body to oscillate relative to each other. The oscillation-type vehicle being capable of carrying out drive control of the left and right drive wheels such that the drive wheels behave differently from each other in response to oscillation of the oscillation-type vehicle, wherein the drive control of the left and right drive wheels is carried out using information on the oscillation and information on a speed of vehicle.

A vehicle operation and riding data collection device includes a housing defining an internal cavity, a power source supported by the housing in the internal cavity, a communications element supported by the housing in the internal cavity, a global positioning element supported by the housing in the internal cavity, at least one sensor supported by the housing in the internal cavity, and a processor configured to manage the power source, the communications element, the global positioning element, and the at least one sensor, to perform functional features corresponding to providing vehicle operation and riding data to, and receiving input from, a user.

A human-powered vehicle control device is provided for controlling a human-powered vehicle. The human-powered vehicle control device includes an electronic controller that controls a human-powered vehicle component in accordance with a control state including first and second modes. The electronic controller changes a transmission ratio of a transmission device in accordance with a first shifting condition in the first mode, and changes the transmission ratio in accordance with a second shifting condition in the second mode. The electronic controller changes the first shifting condition in accordance with a converging reference value, which is related to a traveling state of the human-powered vehicle, for a case where the human-powered vehicle is in a riding converging state in the first mode, and changes the second shifting condition in accordance with a converging reference value for a case where the human-powered vehicle is in the riding converging state in the second mode.

A tire force estimating device estimates tire forces which are forces applied from a ground surface to a wheel of a vehicle which turns in a bank state in which a vehicle body is tilted around a forward-rearward axis. The tire force estimating device includes a first tire force estimating section which estimates the force applied from the ground surface to the wheel, based on a change over time of a motion state of the vehicle body within a plane perpendicular to the forward-rearward axis.

The present invention relates to electric bicycle speed control device and method. According to the present invention, a torque of a motor for driving a wheel is controlled so that a speed of a pedal driven by a user follows a speed of the wheel, and a torque of the pedal is also controlled by applying an assist level according to the torque of the motor. Therefore, even in an electric bicycle with a chain, it is possible to feel a feeling of the pedal like a bicycle with a chain, and it is possible to adjust the force applied to the pedal according to the assist level.

The invention obtains a straddle-type vehicle information processor and a straddle-type vehicle information processing method capable of recognizing that a traveling straddle-type vehicle enters a falling phase with a high degree of accuracy at appropriate timing and thereby contributes to improvement in occupant safety. A straddle-type vehicle information processor 10 includes: a posture information acquisition section 11 that at least acquires a roll rate Rr and a yaw rate Ry generated in a traveling straddle-type vehicle 1 as posture information; and a falling phase recognition section 12 that recognizes that the straddle-type vehicle 1 enters a falling phase in the case where a change in a degree of instability over time, which is derived at least on the basis of the roll rate Rr and the yaw rate Ry, shows an increasing tendency.

A method for warning a driver of a motorcycle and a ride assistant controller for implementing or controlling such method are described. The method includes monitoring traffic situations based on signals from at least one sensor; upon detecting a critical traffic situation based on the signals from the at least one sensor, warning the driver by inducing an acceleration change onto the motorcycle; wherein a current lean angle of the motorcycle is monitored and a manner and/or degree of inducing the acceleration change onto the motorcycle is set taking into account the current lean angle of the motorcycle.

A system includes: sensors that includes a position sensor to determine a vehicle speed, an angular displacement sensor to determine a roll angle corresponding to an angular displacement of the vehicle in a roll direction and a roll rate corresponding to an angular velocity of the vehicle in the roll direction, and a steering torque sensor to determine a steering torque applied to a steering handle of the vehicle; and a stabilizing unit coupled to the sensors. The stabilizing unit: determines a synthesized torque based on the roll angle, the roll rate, and the vehicle speed; determines a tuning parameter based on a comparison of the synthesized torque and the steering torque; determines a stabilizing torque based on the tuning parameter and the synthesized torque; and provides an actuating signal corresponding to the stabilizing torque for applying the stabilizing torque to the steering handle of the vehicle.

A system and method of stabilizing a two-wheeled vehicle are disclosed. In accordance with one aspect, a self-stabilizing two-wheeled vehicle having an articulated frame may generally comprise: a front wheel and a rear wheel substantially aligned along a longitudinal axis; a base frame portion coupled to the front wheel and to the rear wheel via respective front and rear suspension components; an operator frame portion to support an operator of the vehicle; a hinge assembly operably coupling the base frame portion and the operator frame portion; and a control unit to drive the hinge assembly causing the operator frame portion to rotate about a hinge axis as a function of inertial data and speed data.

Disclosed is a vehicle. The vehicle generally includes a frame to support an engine and one or more supports, such as wheels, to support the frame. The engine may include an internal combustion power plant and a fuel supply system therefore.