Provided is an electric power assist system (51) that generates an appropriate level of assist power while a vehicle is running on a slope. The electric power assist system usable for an electric assist vehicle (1) includes: an electric motor (53) generating assist power to assist human power of a rider of the electric assist vehicle; a control device (170) controlling a magnitude of the assist power to be generated by the electric motor; and an acceleration sensor (38) outputting an acceleration signal representing an acceleration Gx in a travel direction of the electric assist vehicle. The control device acquires speed information representing a running speed of the electric assist vehicle based on an external signal, detects an inclination angle of a road surface based on the speed information and the acceleration signal, and causes the electric motor to generate assist power of a magnitude in accordance with the inclination angle.
ELECTRIC ASSIST SYSTEM AND ELECTRIC ASSIST VEHICLE
ELEKTRISCHES ASSISTENZSYSTEM UND ELEKTRISCHES ASSISTENZFAHRZEUG
SYSTÈME D'ASSISTANCE ÉLECTRIQUE ET VÉHICULE D'ASSISTANCE ÉLECTRIQUE
26.04.2023
Patent
Elektronische Ressource
Englisch