Electrically assisted pedal operated vehicle.

摘要

The present invention relates to an electrically assisted pedal operated vehicle, in particular a bicycle, comprising a human power drive and an electrical drive system provided in parallel to each other, wherein an output of said electric drive system is controlled in compliance with changes in the output of the human power drive system. In order to control the electrical power assist an actual driving condition detection means including a human power detection means and a vehicle speed detection means are provided in conjunction with a control means having a fail-safe circuit for discriminating a defective vehicle speed sensor of the vehicle speed detection means.