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:
Aug. 13, 2024
Filed:
Mar. 16, 2021
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Baofeng Fan, Nanjing, CN;
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Abstract
A method for controlling a rotational speed of an electric tool includes starting a motor and controlling the motor to operate at a constant speed which is a preset rotational speed in response to determining that a motor of the electric tool is in a preset low-speed mode, increasing output torque until the motor runs in response to a rotor of the motor being locked, and controlling, based on a relationship between a current rotational speed of the motor and the preset rotational speed, the motor to operate at a constant speed. In this manner, the problem where a rotor is easily locked when the electric tool runs in a low-speed mode in the related art is solved and the electric tool can adaptively adjust an output rotational speed of the motor according to the load condition.