公开(公告)号：US09787231B2

公开(公告)日：2017-10-10

申请号：US14507896

申请日：2014-10-07

Applicant: MINEBEA CO., LTD.

Inventor： Keiichi Katayama ,  Tomohiro Inoue ,  Shuhei Nishi

IPC: H02P8/12 ,  H02P6/24 ,  H02P1/52

CPC classification number: H02P6/24

Abstract: A motor driving device includes a control unit which outputs a pre-driving signal to control a motor based on command information of an input target number of rotations and detection information of a number of rotations of the motor, and a motor driving unit which drives the motor based on the pre-driving signal. The control unit includes a speed control circuit which outputs speed command information based on the command information of the target number of rotations and the detection information, a stop control circuit which when an input of the command information of the target number of rotations is stopped, outputs stop command information after a predetermined time elapses from detection of stop of the motor, and a driving signal generation circuit which generates a control signal based on the stop command information and the speed command information.

公开(公告)号：US08941349B2

公开(公告)日：2015-01-27

申请号：US13860053

申请日：2013-04-10

Applicant: Minebea Co., Ltd.

Inventor： Tomohiro Inoue

IPC: H02P23/00 ,  H02P6/14

CPC classification number: H02P6/145 ,  H02P6/153

Abstract: A motor drive circuit includes: an advance angle setting correcting device having a correction reference cycle according to a reference advance angle count value, in which a correction amount is calculated as a ratio of the correction reference cycle to a cycle of a detection signal indicating a detected frequency proportional to a motor rotation speed, and in which an advance angle setting signal is obtained by multiplying the correction amount by a proportionality factor; and an advance angle setting device in which the advance angle correction value is added to the reference advance angle count value thereby outputting an advance angle setting signal, wherein a drive command signal containing a rotation speed information based on a target rotation speed is externally fed, the motor rotation speed is variably controlled in response to the drive command signal, and the detection signal is fed from a rotation speed detecting device.

Abstract translation: 电机驱动电路包括：提前角设定校正装置，具有根据参考提前角计数值的校正基准周期，其中校正量被计算为校正基准周期与表示检测信号的检测信号的周期的比率 检测频率与电机转速成比例，并且其中通过将校正量乘以比例因子获得提前角设置信号; 以及提前角设定装置，其中将提前角校正值加到基准提前角计数值，从而输出提前角设置信号，其中外部馈送包含基于目标转速的转速信息的驱动命令信号， 响应于驱动命令信号可变地控制电动机转速，并且从转速检测装置馈送检测信号。

公开(公告)号：US09647584B2

公开(公告)日：2017-05-09

申请号：US14926409

申请日：2015-10-29

Applicant: MINEBEA CO., LTD.

Inventor： Keiichi Katayama ,  Tomohiro Inoue

IPC: H02P1/46 ,  H02P1/50 ,  H02P3/18 ,  H02P6/00 ,  H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P6/08 ,  H02P25/022 ,  H02P1/52 ,  H02P6/06

CPC classification number: H02P6/08 ,  H02P1/46 ,  H02P1/52 ,  H02P6/06 ,  H02P6/085 ,  H02P25/022 ,  H02P25/024

Abstract: A motor drive controller includes: a control circuit unit configured to output a drive control signal for driving a motor in response to a command signal externally input to the control circuit unit; and a motor driving unit configured to output a drive signal to the motor based on the drive control signal output from the control circuit unit. The control circuit unit is provided with: a speed setting unit configured to generate a target rotation speed signal corresponding to a target rotation speed based on a command step determined in response to a step command signal and predetermined setting information when the step command signal is input as the command signal; and a drive control signal generating unit configured to generate and output the drive control signal based on the target rotation speed signal.