An electric power-assisted bicycle, comprising: a torque sensor for detecting pedaling force applied to the pedal; an inclination angle sensor for detecting rocking of the bicycle body in a lateral direction; an electric motor that assists drive of a drive wheel driven by pedaling of the rider; and a controller that controls the electric motor based on the pedaling force. The controller has a first mode and a second mode as control modes of the electric motor. The second mode is executed when the controller determines that the rider pedals the bicycle while rocking the bicycle body in the lateral direction. The controller executes different control in the second mode from that in the first mode to assist the drive of the drive wheel.

An electric power-assisted bicycle, comprising: a torque sensor for detecting pedaling force applied to the pedal; an inclination angle sensor for detecting rocking of the bicycle body in a lateral direction; an electric motor that assists drive of a drive wheel driven by pedaling of the rider; and a controller that controls the electric motor based on the pedaling force. The controller has a first mode and a second mode as control modes of the electric motor. The second mode is executed when the controller determines that the rider pedals the bicycle while rocking the bicycle body in the lateral direction. The controller executes different control in the second mode from that in the first mode to assist the drive of the drive wheel.

An apparatus for determining bicycle pedaling may include a sensor that detects the angular velocity and position of a drivetrain or rear sprocket assembly of the bicycle and a processor that is configured to compare the detected values against values indicative of at least one pedaling state. The apparatus may be configured to be housed within a component of the bicycle, such as within a hollow opening of the spindle or crank axle. The apparatus also may include a wireless transmitter to communicate with another component, such as a suspension controller.

A bicycle controller is configured to communicate with a first bicycle component that transmits a first wireless signal and a second bicycle component that transmits a second wireless signal. The bicycle controller includes an interface configured to receive the first wireless signal and the second wireless signal. The first wireless signal has a center frequency that is a first frequency. The second wireless signal has a center frequency that is a second frequency. The second frequency differs from the first frequency.

A load cell for determining a radial force acting on a crankshaft includes a receiving sleeve for receiving a ring of a bearing; a fastening ring for attaching the load cell in a transmission housing; axial support areas provided on the fastening ring for axially supporting the ring of the bearing; and measuring regions for receiving radial forces of the receiving sleeve and which connect the receiving sleeve with the fastening ring, wherein strain sensors are attached to at least two of the measuring regions; and wherein the measuring regions comprise measuring lugs formed as angle brackets.

A tiltable vehicle has a pair of front wheels coupled to a tiltable chassis by a tilt linkage, such that the pair of front wheels and the chassis are configured to tilt in unison with respect to a roll axis of the chassis. The tilt linkage includes a four-bar linkage having a pair of upper bar segments coupled to the chassis at spaced-apart respective inboard joints. In some examples, the inboard joints of the upper bar segments are each disposed outboard of a central chassis joint of a lower bar of the tilt linkage. An orientation sensor is configured to detect directional information regarding a net force vector applied to the chassis, and a tilt actuator operatively coupled to the chassis and configured to selectively tilt the chassis. A controller is configured to selectively control the tilt actuator based on the directional information from the orientation sensor.

A tiltable vehicle has a pair of front wheels coupled to a tiltable chassis by a tilt linkage, such that the pair of front wheels and the chassis are configured to tilt in unison with respect to a roll axis of the chassis. The tilt linkage includes a four-bar linkage having a pair of upper bar segments coupled to the chassis at spaced-apart respective inboard joints. In some examples, the inboard joints of the upper bar segments are each disposed outboard of a central chassis joint of a lower bar of the tilt linkage. An orientation sensor is configured to detect directional information regarding a net force vector applied to the chassis, and a tilt actuator operatively coupled to the chassis and configured to selectively tilt the chassis. A controller is configured to selectively control the tilt actuator based on the directional information from the orientation sensor.

An electric bicycle theft prevention system for preventing theft of an electric bicycle according to an embodiment of the present disclosure includes a motor unit, a sensor unit, a controller, and an alarm unit. The motor unit is a permanent magnet synchronous motor (PMSM), and is configured to rotate wheels of the electric bicycle by receiving power from an electric storage unit. The sensor unit is configured to detect a position of a rotation shaft or a rotor of the motor unit. The controller is configured to control the motor unit and the sensor unit. The alarm unit is configured to generate an alarm by an electrical signal of the control unit. In addition, when a theft prevention function is activated in an unused state of the electric bicycle, the controller monitors a sensor value of the sensor unit to detect a movement of the electric bicycle.

An electric bicycle theft prevention control method of an electric bicycle theft prevention system for preventing theft of an electric bicycle according to an embodiment of the present disclosure includes a theft prevention function activating operation, an electric bicycle movement detecting operation, an alarm operating and wheel locking operation, an alarm operation and wheel lock cancelling operation. In the theft prevention function activating operation, a theft prevention function of the electric bicycle is activated by a user in an unused state of the electric bicycle. In the electric bicycle movement detecting operation, a controller monitors a sensor value of a sensor unit to detect a movement of the electric bicycle after the theft prevention function is activated. In the alarm operating and wheel locking operation, when the controller determines that the electric bicycle is moving in the electric bicycle movement detecting operation, an alarm is operated and wheels of the electric bicycle are locked. In the alarm operation and wheel lock cancelling operation, the controller detects whether the sensor value of the sensor unit is greater than a predetermined set value in the alarm operating and wheel locking operation, and when it is detected that the sensor value of the sensor unit is smaller than the predetermined set value, the alarm operation and wheel lock are cancelled.

An electric bicycle theft prevention system for preventing theft of an electric bicycle according to an embodiment of the present disclosure includes a motor unit, a sensor unit, a controller, and an alarm unit. The motor unit is a permanent magnet synchronous motor (PMSM), and is configured to rotate wheels of the electric bicycle by receiving power from an electric storage unit. The sensor unit is configured to detect a position of a rotation shaft or a rotor of the motor unit. The controller is configured to control the motor unit and the sensor unit. The alarm unit is configured to generate an alarm by an electrical signal of the control unit. In addition, when a theft prevention function is activated in an unused state of the electric bicycle, the controller monitors a sensor value of the sensor unit to detect a movement of the electric bicycle.

An electric bicycle theft prevention control method of an electric bicycle theft prevention system for preventing theft of an electric bicycle according to an embodiment of the present disclosure includes a theft prevention function activating operation, an electric bicycle movement detecting operation, an alarm operating and wheel locking operation, an alarm operation and wheel lock cancelling operation. In the theft prevention function activating operation, a theft prevention function of the electric bicycle is activated by a user in an unused state of the electric bicycle. In the electric bicycle movement detecting operation, a controller monitors a sensor value of a sensor unit to detect a movement of the electric bicycle after the theft prevention function is activated. In the alarm operating and wheel locking operation, when the controller determines that the electric bicycle is moving in the electric bicycle movement detecting operation, an alarm is operated and wheels of the electric bicycle are locked. In the alarm operation and wheel lock cancelling operation, the controller detects whether the sensor value of the sensor unit is greater than a predetermined set value in the alarm operating and wheel locking operation, and when it is detected that the sensor value of the sensor unit is smaller than the predetermined set value, the alarm operation and wheel lock are cancelled.

An electric bicycle, a control system of the electric bicycle and a control method thereof are provided. The control system includes a pedal torque sensor, a micro-control circuit, a motor driver and a motor. The pedal torque sensor senses a plurality of pedal torques during a traveling period of the electric bicycle. The micro-control circuit is electrically connected to the pedal torque sensor and saves a reference pedal force. The micro-control circuit calculates an average pedal force based on the plurality of pedal torques and the traveling period, and generates a control signal based on a comparison result of the reference pedal force and the average pedal force. The motor driver is electrically connected to the micro-control circuit and generates a motor driving signal according to the control signal. The motor generates a motor output torque according to the motor driving signal.