Invention Grant
US08129934B2 Motor driver supplying drive current while adjusting decay rate thereof
有权
电机驱动器在调节其衰减速率的同时提供驱动电流
- Patent Title: Motor driver supplying drive current while adjusting decay rate thereof
- Patent Title (中): 电机驱动器在调节其衰减速率的同时提供驱动电流
-
Application No.: US12364583Application Date: 2009-02-03
-
Publication No.: US08129934B2Publication Date: 2012-03-06
- Inventor: Motohiro Ando
- Applicant: Motohiro Ando
- Applicant Address: JP kyoto-fu
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP kyoto-fu
- Agency: Fish & Richardson P.C.
- Priority: JP2008-024014 20080204; JP2009-018543 20090129
- Main IPC: H02P8/00
- IPC: H02P8/00 ; G05B19/40
Abstract:
A motor driver that supplies a drive current to a stepping motor includes a decay rate controller configured to mix a first decay rate and a second decay rate smaller than the first decay rate with each other, and set a plurality of mix decay rates, a control logic circuit configured to create magnetization patterns for attenuating the drive current at the mix decay rates, and a drive current output circuit configured to output the drive current to the stepping motor in accordance with the magnetization patterns.
Public/Granted literature
- US20090206788A1 MOTOR DRIVER SUPPLYING DRIVE CURRENT WHILE ADJUSTING DECAY RATE THEREOF Public/Granted day:2009-08-20
Information query
