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. 09, 2016
Filed:
Sep. 24, 2014
Process Control Corporation, Doraville, GA (US);
Lloyd Miller, Canton, OH (US);
PROCESS CONTROL CORPORATION, Doraville, GA (US);
Abstract
Various examples are provided for brushless direct current (DC) motor control over a wide dynamic range. In one example, among others, a system including a power drive coupled to a DC motor and a MCU configured to control commutation of the DC motor based upon shaft speed of the DC motor, where the MCU transitions between a motion-based commutation mode and a time-based commutation mode in response to a comparison of the shaft speed with a predefined threshold. In another example, a method includes commutating a DC motor in response to a transition in rotor position of the DC motor and transitioning from a motion-based commutation mode to a time-based commutation mode in response to a comparison of shaft speed of the DC motor to a predefined threshold.