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. 26, 2021
Filed:
Mar. 19, 2019
Applicant:
Sz Dji Technology Co., Ltd., Shenzhen, CN;
Inventors:
Qiu Lan, Shenzhen, CN;
Changxing Zhou, Shenzhen, CN;
Assignee:
SZ DJI TECHNOLOGY CO., LTD., Shenzhen, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 1/00 (2006.01); B64C 39/02 (2006.01); H02P 27/08 (2006.01); H02P 7/00 (2016.01); H02P 29/032 (2016.01); H02P 7/06 (2006.01);
U.S. Cl.
CPC ...
G05D 1/0077 (2013.01); B64C 39/024 (2013.01); G05D 1/0072 (2013.01); H02P 7/00 (2013.01); H02P 7/063 (2013.01); H02P 27/08 (2013.01); H02P 29/032 (2016.02); B64C 2201/042 (2013.01); H02P 27/085 (2013.01); H02P 2201/00 (2013.01); H02P 2209/07 (2013.01); H02P 2209/11 (2013.01); H02P 2209/13 (2013.01);
Abstract
A method for driving an electric motor includes providing two controllers for driving the electric motor. The two controllers use different control methods to drive the electric motor. The method further includes selecting a first controller of the controllers as a primary controller to drive the electric motor and a second controller of the controllers as a secondary controller, monitoring a control of the electric motor, and switching the control of the electric motor from the primary controller to the secondary controller if an error condition is detected in the control of the electric motor.