公开(公告)号：US09941826B2

公开(公告)日：2018-04-10

申请号：US15359459

申请日：2016-11-22

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Yuji Omura

IPC: H02P3/00 ,  H02P23/12 ,  H02P6/182 ,  H02P27/06 ,  H02P6/15 ,  H02P6/17

CPC classification number: H02P6/182 ,  H02P6/157 ,  H02P6/17 ,  H02P27/06

Abstract: A motor drive control device drives a motor including a plurality of phase coils and a rotor rotatably supported with respect to the plurality of phase coils, and the motor drive control device includes a controller, which generates a drive control signal; a motor driver, which outputs a drive signal to each of the phase coils of the motor, based on the drive control signal; and a back-electromotive-voltage detector, which is connected to each of the phase coils and includes resistive voltage dividing circuits having respectively different voltage-dividing ratios, wherein the back-electromotive-voltage detector detects a rotational position of a rotor for sensorless driving by using the resistive voltage dividing circuits.

公开(公告)号：US10063167B2

公开(公告)日：2018-08-28

申请号：US15070565

申请日：2016-03-15

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Toshihiro Tamitsuji

IPC: H02P23/12 ,  H02P7/00 ,  H02P6/182 ,  H02P6/15

CPC classification number: H02P6/182 ,  H02P6/157

Abstract: A motor drive controller includes: an advance-angle reference voltage generator that generates an advance-angle reference voltage; a back electromotive voltage comparator that generates phase signals of phases at a cross timing of the advance-angle reference voltage and back electromotive voltages of phases of a motor; and a controller that operates to perform a process including: detecting a rotation speed of the motor based on the phase signals of the phases; increasing the advance-angle reference voltage when the rotation speed moves from a high speed to a low speed; and decreasing the advance-angle reference voltage when the rotation speed moves from a low speed to a high speed.

公开(公告)号：US09543866B2

公开(公告)日：2017-01-10

申请号：US14952170

申请日：2015-11-25

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Masato Aoki

IPC: H02P6/04 ,  H02P6/18 ,  H02P6/00 ,  H02P6/20

CPC classification number: H02P6/182 ,  H02P6/20

Abstract: A motor drive controller is for controlling a motor having multiple phases and includes: a comparison reference voltage generator that generates a predetermined constant voltage as a comparison reference voltage; a counter-electromotive voltage comparator that compares the comparison reference voltage with a counter-electromotive voltage of each phase of the motor; and a rotation state detector that detects a rotation state of the motor based on positive/negative polarities of counter-electromotive voltages of other phases with respect to the comparison reference voltage at the time of an occurrence of a zero cross between the counter-electromotive voltage of any one phase and the comparison reference voltage.

Abstract translation: 电机驱动控制器用于控制具有多相的电动机，并且包括：比较参考电压发生器，其产生作为比较参考电压的预定恒定电压; 一个反电动势电压比较器，用于比较比较参考电压与电机各相的反电动势; 以及旋转状态检测器，其基于在反电动势电压之间的零交叉时发生相对于比较参考电压的其它相的反电压电压的正/负极性来检测电动机的旋转状态 的任一相和比较参考电压。

公开(公告)号：US09960717B2

公开(公告)日：2018-05-01

申请号：US15359282

申请日：2016-11-22

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu

IPC: H02P7/00 ,  H02P23/12 ,  H02P3/00 ,  H02P6/17 ,  H02P29/10 ,  H02P27/06 ,  H02P6/182 ,  H02P6/20

CPC classification number: H02P6/17 ,  H02P6/182 ,  H02P6/20 ,  H02P27/06 ,  H02P29/10

Abstract: A motor drive control device, which drives a motor including a plurality of phase coils and a rotor, includes: a motor driver, which outputs a drive signal to the phase coils on a drive control signal; one position sensor, which is provided in a position where a timing of at least one of a rising edge and a falling edge of a rotor position signal is near a zero cross timing of a phase signal of any phase coil; and a controller that: generates the drive control signal based on the phase signal in a case where a rotational speed of the motor is less than a predetermined rotational speed; and generates the drive control signal based on the rotor position signal output from the one position sensor in a case where the rotational speed is equal to or more than the predetermined rotational speed.

公开(公告)号：US09748879B2

公开(公告)日：2017-08-29

申请号：US14939515

申请日：2015-11-12

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Masato Aoki

IPC: H02P6/06 ,  H02P6/34 ,  H02P6/17

CPC classification number: H02P6/34 ,  H02P6/06 ,  H02P6/17

Abstract: A motor drive controller is provided with: a motor drive circuit that drives a motor and having a position detector that detects a position of a rotor of the motor and outputs a position detection signal; a motor control circuit that generates a rotation pulse signal based on the position detection signal output by the motor drive circuit; and a microcomputer that is provided with at least one timer and outputs a conversion signal that is obtained by multiplying the rotation pulse signal by n, where n is a natural number equal to or greater than two.

公开(公告)号：US09742327B2

公开(公告)日：2017-08-22

申请号：US15151945

申请日：2016-05-11

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Yuji Omura ,  Kouji Kebukawa ,  Masato Aoki

IPC: H02P6/16 ,  H02K33/00 ,  H02P6/17 ,  H02P6/15 ,  H02K29/12

CPC classification number: H02P6/17 ,  H02K29/12 ,  H02P6/153 ,  H02P6/16

Abstract: A motor drive controller includes: a motor driver that applies a voltage to each phase of a motor to rotate; a rotational position detector that detects rotational position of the motor and generates rotational position information indicating the rotational position; and a controller that outputs, to the motor driver, driving control signals for repeatedly adjusting an advance angle and a lag angle at energization switching of the each phase of the motor in a prescribed pattern based on the rotational position information generated by the rotational position detector.