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. 27, 2019
Filed:
May. 01, 2018
Lg Electronics Inc., Seoul, KR;
Jongseong Ji, Seoul, KR;
Wontae Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A method for controlling a brushless direct current (BLDC) motor is disclosed. The method includes: receiving a constant current; comparing the constant current to a reference current; based on the comparison revealing that the constant current is smaller than the reference current, providing a first speed command to the rotational speed control unit to increase a speed of the BLDC motor; based on the comparison revealing that the constant current is larger than the reference current, providing a second speed command to the rotational speed control unit to decrease a speed of the BLDC motor; based on the comparison revealing that the constant current is the same as the reference current, providing a third speed command to the rotational speed control unit to maintain a speed of the BLDC motor; and controlling, by the rotational speed control unit, a speed of the BLDC motor.