Patent ID: 11927505
Assignee: BRIDGESTONE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. An aerodynamic characteristic estimation device comprising:
a velocity detection section configured to detect at least one of a velocity of a bicycle or an acceleration of the bicycle when being pedaled by a cyclist;
a pedaling power detection section configured to detect a pedaling power when being pedaled by the cyclist; and
an estimation section configured to estimate aerodynamic drag information indicating an aerodynamic characteristic acting on the bicycle being ridden by the cyclist, based on a computation result of mechanical analysis according to an equation of motion established for a direction of progress of the bicycle and using the at least one of the velocity of the bicycle or the acceleration of the bicycle, as obtained from a detection result of the velocity detection section, together with the pedaling power as detected by the pedaling power detection section;
wherein the estimation section is configured to estimate the aerodynamic drag information based on the equation:

CdA=2/ρV2{(P/V)−Ma−FRR}

wherein M is a total mass of the bicycle when being ridden by the cyclist, a is an acceleration of the bicycle, ρ is a density of air, V is a direction of progress velocity of the bicycle, P is the pedaling power, FRR is a rolling resistance, and CdA is aerodynamic drag information.