electric assist bike

Abstract

To provide an efficient assist by a motor by setting an assist amount based on fatigue information which is actually measured while estimating the degree of fatigue which a rider feels in a motor assisted bicycle. Means for Resolution In a motor assisted bicycle which includes: a stepping force sensor 2 which detects a stepping force generated on a pedal; an assist amount control part 10 which includes an assist amount correction means which performs the estimation of fatigue of a human body and decides an assist force corresponding to an output of the stepping force sensor 2; and a motor 5 which generates the assist force and assists a drive force, the motor assisted bicycle further comprises a vehicle speed sensor 1 which detects a vehicle speed of the vehicle, and the assist amount control part 10 includes: a basic assist amount setting part 11 which sets by calculation a basic assist amount based on the stepping force and the vehicle speed; and a fatigue level estimation part 12 which performs the increase / decrease correction of the basic assist amount by estimating a fatigue level of a rider.

Description

technical field [0001] The present invention relates to an electrically assisted bicycle having a motor for assisting the driving force generated by pedaling force generated by a person pedaling, and more particularly to a motor that is efficiently performed in consideration of the degree of fatigue of the rider Assisted Electric Assisted Bikes. Background technique [0002] A power-assisted bicycle includes a pedaling force sensor that detects the pedaling force generated on the pedals, a motor that assists the driving force based on the output of the pedaling force sensor, a crank angle sensor that detects the angle of the crankshaft connected to the pedals, and a crank speed sensor that detects the rotational speed of the crankshaft . [0003] As an electric bicycle that assists the driving force in consideration of not only the pedal force but also the degree of fatigue in order not to increase the motor assist force when a rider with a low degree of fatigue is riding, ...

AI Technical Summary

Problems solved by technology

[0006] However, for example, in the case where the body index is determined only by the heart rate, even if the body index has the same value due to the same heart rate, the degree of fatigue felt by the rider varies depending on the riding conditions such as the duration of the ride. Different, so there is a problem that the amount of assistance does not match the feeling of the rider

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