Invention Grant
- Patent Title: Back electromotive force detection circuit and motor driving control apparatus using the same
- Patent Title (中): 反电动势检测电路和使用其的电机驱动控制装置
-
Application No.: US13901347Application Date: 2013-05-23
-
Publication No.: US09099949B2Publication Date: 2015-08-04
- Inventor: Hyun Paek , Joo Yul Ko
- Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- Applicant Address: KR Suwon-Si, Gyeonggi-Do
- Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- Current Assignee Address: KR Suwon-Si, Gyeonggi-Do
- Agency: McDermott Will & Emery LLP
- Priority: KR10-2012-0151015 20121221
- Main IPC: H02P23/12
- IPC: H02P23/12 ; H02P6/14 ; H02P6/18 ; H02P6/08

Abstract:
There are provided a back electromotive force detection circuit and a motor driving control apparatus using the same. The back electromotive force detection circuit includes a duty determining unit and a delay compensation unit. The duty determining unit outputs a differential level according to a duty of a driving control signal of a motor. The delay compensation unit performs delay compensation differently on each differential level to compensate for a delay in back electromotive force of the motor regardless of a variation in a duty of the driving control signal.
Public/Granted literature
- US20140176031A1 BACK ELECTROMOTIVE FORCE DETECTION CIRCUIT AND MOTOR DRIVING CONTROL APPARATUS USING THE SAME Public/Granted day:2014-06-26
Information query