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:
Jan. 15, 2019
Filed:
Jun. 23, 2016
Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;
Masanori Negoro, Shizuoka, JP;
Kazuya Matsubara, Shizuoka, JP;
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka, JP;
Abstract
An electrically assisted bicycle includes a crank shaft, pedals, an electric motor, a pedal effort sensor that detects a pedal effort exerted on the pedals, a propelling detection sensor that detects that the electrically assisted bicycle is starting to be propelled, and a controller that executes a first control in which a command value provided to the electric motor is obtained based on the output of the pedal effort sensor and a second control in which a command value provided to the electric motor is obtained based on the output of the pedal effort sensor and the output of the propelling detection sensor. The controller is configured or programmed to select the first control or the second control as a calculation method of a command value provided to the electric motor during a period of time from a state in which the electrically assisted bicycle is stopped until a detection of the rotation of the crank shaft.