The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2016
Filed:
Nov. 12, 2014
Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka, JP;
Abstract
An electrically assisted vehicle includes a vehicle body, pedals to input human power, a crank that is coupled to the pedals and freely rotatably supported on the vehicle body, a wheel (i.e., at least one wheel) that is attached to the vehicle body and rotates according to a rotation of the crank, a first electric motor that is attached to the vehicle body and drives the wheel, a second electric motor that is attached to the vehicle body and drives the wheel or another wheel, a torque detection unit that detects a torque applied to the crank, a torque command value calculation unit, and a motor drive unit that drives the first electric motor and second electric motor according to a calculated torque command value. The torque command value calculation unit calculates a first torque command value for the first electric motor and a second torque command value for the second electric motor according to a torque detected by the torque detection unit, and calculates the first and second torque command values such that the first and second torque command values are mutually shifted in phase.