Invention Grant
- Patent Title: Electronic circuit and method for automatically adjusting a phase of a drive signal applied to an electric motor in accordance with a zero current detected in a winding of the electric motor
- Patent Title (中): 电子电路和方法，用于根据在电动机的绕组中检测到的零电流来自动调节施加到电动机的驱动信号的相位
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Application No.: US13599225Application Date: 2012-08-30
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Publication No.: US08917043B2Publication Date: 2014-12-23
- Inventor: Timothy Reynolds , Chengyi Jin
- Applicant: Timothy Reynolds , Chengyi Jin
- Applicant Address: US MA Worcester
- Assignee: Allegro Microsystems, LLC
- Current Assignee: Allegro Microsystems, LLC
- Current Assignee Address: US MA Worcester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: H02P6/00
- IPC: H02P6/00
Abstract:
A motor control circuit and associated techniques can adjust a phase of a motor drive to keep a rotational reference position of an electric motor at the same relative phase as a zero current in a motor winding at different motor speeds and as the motor accelerates and decelerates. In some embodiments, a particular circuit and technique can be used to detect the zero current in the motor winding.
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