Driving device and driving method for electric assisted bicycle
AssigneeAcer Incorporated
InventorHao-Ming Chen
Life of this patent
Estimating the term…
Abstract
A driving device and a driving method for an electric assisted bicycle are provided. The driving device includes a motor, a rotation speed sensor, a torque sensor and a controller. The rotation speed sensor senses a rotation speed value of a crank or a chainring of the electric assisted bicycle. The torque sensor obtains an average torque value applied by the crank to the chainring of the electric assisted bicycle. The controller controls an output of the motor in response to the rotation speed value and the average torque value.
Claims14
A driving device for an electric assisted bicycle, comprising:
- a motor configured to provide a driving torque required by the electric assisted bicycle to move forward;
- a rotation speed sensor configured to sense a rotation speed value of one of a crank and a chainring of the electric assisted bicycle;
- a torque sensor configured to obtain an average torque value applied by the crank to the chainring of the electric assisted bicycle;
- and
- a controller coupled to the motor, the rotation speed sensor, and the torque sensor, and configured to control an output of the motor in response to the rotation speed value and the average torque value,
- wherein when the rotation speed value is higher than an idle rotation speed value, and lower than or equal to a high-speed rotation speed value, and the average torque value is greater than a preset torque value, the controller controls the motor to provide an output corresponding to the average torque value.
A driving method for an electric assisted bicycle, wherein the electric assisted bicycle comprises a chainring, a crank, and a motor, and the driving method comprises:
- sensing a rotation speed value of one of the crank and the chainring by a rotation speed sensor, and obtaining an average torque value applied by the crank to the chainring by a torque sensor;
- and
- controlling an output of the motor in response to the rotation speed value and the average torque value,
- wherein controlling the output of the motor in response to the rotation speed value and the average torque value comprises:
- when the rotation speed value is higher than an idle rotation speed value, and lower than or equal to a high-speed rotation speed value, and the average torque value is greater than a preset torque value, controlling the motor to provide an output corresponding to the average torque value.
Dependencies are inferred from the claim text.