Driving unit and battery-assisted bicycle

摘要

A battery-assisted bicycle includes a driving unit that accurately detects a failure in each of a torque detector, a crank rotation detector, and a motor rotation detector. The driving unit includes a crankshaft to which pedals are to be connected, a motor rotation detector that detects rotation of an electric motor, a torque detector that detects a torque generated at the crankshaft, a crank rotation detector that detects rotation of the crankshaft, and a sensor failure detector that detects a failure in at least one of the motor rotation detector, the torque detector, and the crank rotation detector based on detection results from the motor rotation detector, the torque detector, and the crank rotation detector.

主权项

1. A driving unit that assists a rider's pedaling effort, the driving unit comprising:
an electric motor that provides a driving force; a crankshaft to which pedals are to be connected; a motor rotation detector that detects rotation of the electric motor; a torque detector that detects a torque generated at the crankshaft by the rider; a crank rotation detector that detects rotation of the crankshaft; and a sensor failure detector that detects a failure in at least one of the motor rotation detector, the torque detector, and the crank rotation detector based on detection results from all three of the motor rotation detector, the torque detector, and the crank rotation detector.