Title:
電動補助システムおよび電動補助車両
Document Type and Number:
Japanese Patent JP6805269
Kind Code:
B2
Abstract:
An electric assistance system(51)used in an electrically assisted vehicle(1)provided with a pedal(55),includes: a crankshaft(57)rotatable by human power of a rider applied to the pedal; a torque sensor(41)outputting a torque signal in accordance with a magnitude of a torque generated at the crankshaft; an electric motor(53)generating assist power assisting the human power of the rider; an acceleration sensor(38)outputting an acceleration signal in accordance with a current acceleration in a travel direction of the electric assist vehicle; and a control device(70)receiving the torque signal and the acceleration signal and determining a magnitude of the assist power to be generated by the electric motor. The control device calculates a target acceleration from the torque signal based on a rule prepared in advance, and determines \ magnitude of the assist power to be generated by the electric motor(53)such that a deviation between the target acceleration and the current acceleration is decreased.
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Inventors:
Mitsuharu Hasumi
Application Number:
JP2018558814A
Publication Date:
December 23, 2020
Filing Date:
September 21, 2017
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
B62M6/45
Domestic Patent References:
| JP2016150684A | ||||
| JP2004025913A | ||||
| JP2001239982A |
Foreign References:
| EP2711285A1 | ||||
| US8874296 | ||||
| US6545437 |
Attorney, Agent or Firm:
Seiji Okuda
Ryoji Yamashita
Michi Kajitani
Hidetaka Okabe
Ryoji Yamashita
Michi Kajitani
Hidetaka Okabe