An automatic bicycle drivetrain shifting apparatus comprising a bicycle drive chain derailleur apparatus powered by a servo gearmotor and controlled through a highly adaptable user interface serving to automatically alternate drive chain position between available bicycle drive sprockets based on user preset and in real time modifiable criteria and additionally making use of critical chain driver apparatus serving to ensure chain motion is always available to satisfy derailleur operation requirements often prevalent during coasting and stopping where the bicycle speed changes while pedaling motion has ceased.

A creation device is provided that has at least one processor operatively coupled to non-transitory computer readable storage to execute operations that includes an acquisition part and a creation part. The acquisition part acquires input information concerning traveling of a human-powered vehicle. The creation part uses a learning algorithm to create a learning model that outputs output information concerning control of the components of the human-powered vehicle based on the input information.

An automatic control system includes a host connected to the actuator and the inputting device of a bicycle. The actuator controls the motor to drive the mechanical structure to generate a displacement. The inputting device receives the external information by manually entering or automatically sensing via the inputting device to obtain an inputting parameter. In each riding journey of the predetermined path, the host records the inputting parameter that the controller of the actuator drives the motor based on and the time spent for the riding journey to form a riding information. When the rider rides the bicycle on the predetermined path again, the host selects one of the riding information, which has the shortest time spent for the riding journey, as an operating parameter for controlling the actuator, so that the host automatically controls the actuator based on the operating parameter to prevent the cyclist from distracting.

An automatic control system includes a host connected to the actuator and the inputting device of a bicycle. The actuator controls the motor to drive the mechanical structure to generate a displacement. The inputting device receives the external information by manually entering or automatically sensing via the inputting device to obtain an inputting parameter. In each riding journey of the predetermined path, the host records the inputting parameter that the controller of the actuator drives the motor based on and the time spent for the riding journey to form a riding information. When the rider rides the bicycle on the predetermined path again, the host selects one of the riding information, which has the shortest time spent for the riding journey, as an operating parameter for controlling the actuator, so that the host automatically controls the actuator based on the operating parameter to prevent the cyclist from distracting.

An automatic control method suitable for a bicycle system is provided. The bicycle system has a gear ratio and a toque ratio formed by an auxiliary torque and a pedaling torque. The automatic control method includes following steps: sensing a pedaling cadence and the pedaling torque of the bicycle system in a riding state; setting a first cadence threshold and a second cadence threshold according to a preset pedaling cadence while the first cadence threshold is greater than the second cadence threshold; and determining whether the pedaling cadence is greater than the first cadence threshold or less than the second cadence threshold so as to set to increase or decrease the gear ratio. In addition, a bicycle system suitable for the automatic control method is also provided.

A bicycle front shifting system includes operable to transmit a wireless signal, a crank assembly with two crank arms and a pedal on each of the two crank arms. The crank assembly is rotatable about a rotation axis. A front shift unit is coupled to the crank assembly and is rotatable about the rotation axis. The front shift unit includes a chain ring component with a big chain ring and a small chain ring. The small chain ring has a small diameter and the big chain ring has a big diameter that is larger than the small diameter. A shift mechanism is coupled to and rotatable with the chain ring component about the rotation axis. The shift mechanism is configured to receive the wireless signal from the shifter and to shift a chain between the big chain ring and the small chain ring according to the wireless signal.

A bicycle with an electric pedal assist motor capable of driving a chainring independent of cranks includes wheel speed sensors and crank cadence sensors. The wheel speed sensors and the crank cadence sensors measure wheel speed and crank cadence, respectively, and provide the measured wheel speed and crank cadence to controller of the bicycle. The controller activates motor overdrive based on the measured wheel speed and/or the measured crank cadence.

A bicycle with an electric pedal assist motor capable of driving a chainring independent of cranks includes wheel speed sensors and crank cadence sensors. The wheel speed sensors and the crank cadence sensors measure wheel speed and crank cadence, respectively, and provide the measured wheel speed and crank cadence to controller of the bicycle. The controller activates motor overdrive based on the measured wheel speed and/or the measured crank cadence.

A bicycle derailleur system is applied to a bicycle and includes a controller, a camera, a derailleur assembly, and the memory device that are electrically connected to the controller. The camera records a real-time video of a road ahead. When the derailleur assembly is operated to shift, the derailleur assembly sends a chain shifting signal to drive the controller to process the video captured by the camera to obtain a section of video between a predetermined time before and after the chain shifting signal. The controller stores the section of the video along with information in the chain shifting signal to the memory device, to establish a basis for image similarity comparison. When the bicycle derailleur system is operated automatically, the image similarity comparison between real-time video recorded by the camera and the sections of the videos stored in the memory device is conducted to determine whether to shift.

An electrical bicycle operating system includes a first switch unit that includes a first switch group configured to be mounted to a bicycle on a first side of a central longitudinal axis of the bicycle, the first switch group including a first switch and a second switch having a first position and a second position in the first switch group. Also included is a second switch unit that includes a second switch group configured to be mounted to the bicycle on an opposite side from the first side, the second switch group including a third switch having a same position as the first position. A control unit is configured to generate a first signal where the first switch unit is actuated, a second signal where the second switch unit is actuated, and a third signal where the first switch unit and the second switch unit are actuated concurrently.