Bicycle control system
AssigneeSram, LLC
InventorBrian Jordan
Life of this patent
Estimating the term…
Abstract
An electronic component for an electric bicycle is provided. The electric bicycle includes a transmission. The electronic component includes a processor configured to identify an operating condition of the electric bicycle, determine transmission losses of the transmission of the electric bicycle based on the identified operating condition, and control an assist motor of the electric bicycle based on the determined transmission losses.
Claims19
An electronic component for an electric bicycle, the electric bicycle including a transmission, the electronic component comprising:
- a processor and a sensor, the processor configured to:
- identify an operating condition of the electric bicycle, the operating condition of the electric bicycle being a riding condition identified based on data output by the sensor;
- determine transmission losses of the transmission of the electric bicycle based on the identified riding condition sensed by the sensor;
- and
- control an assist motor of the electric bicycle based on the determined transmission losses.
A controller for an assist motor of an electric bicycle, the electric bicycle including a transmission, the controller comprising:
- a processor configured to:
- identify an input torque at a crank assembly of the electric bicycle;
- identify a speed of the electric bicycle;
- compare the identified speed of the electric bicycle to a predetermined maximum threshold speed;
- when, based on the comparison, the identified speed of the electric bicycle is greater than the predetermined maximum threshold speed:
- determine transmission losses of the transmission of the electric bicycle based on the identified input torque;
- and
- control the assist motor of the electric bicycle based on the determined transmission losses;
- and
- when, based on the comparison, the identified speed of the electric bicycle is less than the predetermined maximum threshold speed:
- control the assist motor of the electric bicycle based on the identified input torque.
A system for controlling an electric bicycle, the electric bicycle including a transmission, the system comprising:
- a first sensor configured to generate input torque data;
- a second sensor configured to generate bicycle speed data;
- a processor in communication with the first sensor and the second sensor, the processor being configured to:
- receive the input torque data from the first sensor, the input torque data representing an input torque at a crankarm assembly of the electric bicycle;
- receive the bicycle speed data from the second sensor, the bicycle speed data representing a speed of the electric bicycle;
- compare the speed of the electric bicycle to a predetermined maximum threshold speed;
- and
- when, based on the comparison, the speed of the electric bicycle is greater than the predetermined maximum threshold speed:
- determine transmission losses of the transmission of the electric bicycle based on the input torque;
- and
- control an assist motor of the electric bicycle based on the determined transmission losses.
Dependencies are inferred from the claim text.