公开(公告)号：US11658592B2

公开(公告)日：2023-05-23

申请号：US17244008

申请日：2021-04-29

申请人： MINEBEA MITSUMI Inc.

发明人： Hiroyuki Kaidu ,  Masato Aoki ,  Takamichi Kitano ,  Takahiro Suzuki

IPC分类号： H02P6/182 ,  H02P6/28 ,  G05B19/042 ,  H02P6/16 ,  H02P27/08

CPC分类号： H02P6/28 ,  G05B19/042 ,  H02P6/16 ,  G05B2219/23399 ,  H02P27/08

摘要： The present disclosure provides a motor control circuit enabled to change or adjust functions to be implemented to suppress an increase in cycle time during mass production. A motor control circuit according to an exemplary embodiment of the present disclosure is a motor control circuit to control a motor driver including a first non-volatile memory and a second non-volatile memory, and the first non-volatile memory stores a control algorithm and a first parameter group to be used by the control algorithm of the motor control circuit, and the second non-volatile memory is enabled to store a second parameter group to be used by the control algorithm.

公开(公告)号：US10910979B2

公开(公告)日：2021-02-02

申请号：US15813880

申请日：2017-11-15

申请人： Minebea Mitsumi Inc.

发明人： Hiroyuki Kaidu ,  Masato Aoki ,  Youhei Serizawa

IPC分类号： H02P6/16 ,  H02H7/093 ,  H02P6/14 ,  H02P23/04 ,  H02P6/12 ,  H02P6/15 ,  H02P3/18 ,  H02P3/02 ,  H02P25/04

摘要： According to an aspect of the present disclosure, a motor drive control device driving a motor using position information detected by one sensor includes: a current detection unit detecting a magnitude of a coil current flowing through a coil of the motor; a rotation position detection unit detecting a rotation position of the motor based on the position information; and a hunting determination unit determining, based on the magnitude of the coil current, the rotation position of the motor, and a driving command for driving the motor, whether or not the motor is in a hunting condition.

公开(公告)号：US10651769B2

公开(公告)日：2020-05-12

申请号：US15988046

申请日：2018-05-24

申请人： Minebea Mitsumi Inc.

发明人： Hiroyuki Kaidu ,  Masato Aoki ,  Youhei Serizawa ,  Zhou Xiao

IPC分类号： H02P6/08 ,  H02P6/28 ,  H02P6/06 ,  H02P6/15 ,  H02P6/14

摘要： A motor drive control device includes: a control circuit unit for outputting a drive control signal for performing advance-angle control of a motor to drive the motor; a motor driving unit for outputting a drive signal to the motor with a phase based on the drive control signal output from the control circuit unit to drive the motor; and a current detecting circuit for detecting a voltage value corresponding to a drive current of the motor, wherein the control circuit unit detects a cross-timing between the voltage value detected by the current detecting circuit and each of two or more reference voltage values, and performs the advance-angle control based on a detection result of the cross-timing to adjust a phase of the drive current.

公开(公告)号：US11754084B2

公开(公告)日：2023-09-12

申请号：US16805975

申请日：2020-03-02

申请人： MINEBEA MITSUMI Inc.

发明人： Masato Aoki ,  Yuji Omura ,  Takahiro Suzuki

IPC分类号： F04D27/00 ,  F04D25/06 ,  H02P29/04 ,  F04D29/66 ,  F04B49/06

CPC分类号： F04D27/004 ,  F04D25/06 ,  H02P29/045 ,  F04B49/065 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04B2203/0211 ,  F04D29/66

摘要： A motor drive control device has a control circuit that generates a drive control signal for controlling a rotational speed of a motor based on a speed command signal indicating a target rotational speed of the motor, and a motor driving unit that drives the motor based on the drive control signal. The control circuit performs speed feedback control for generating the drive control signal so that the rotational speed of the motor coincides with the target rotational speed when the target rotational speed is lower than a rotational speed threshold value, and generates the drive control signal based on a relationship between current flowing through the motor and a reference current value when the target rotational speed is higher than the rotational speed threshold value.

公开(公告)号：US10609838B2

公开(公告)日：2020-03-31

申请号：US16168988

申请日：2018-10-24

申请人： MINEBEA MITSUMI Inc.

发明人： Hiroyuki Kaidu ,  Masato Aoki

IPC分类号： H02P7/00 ,  H05K7/20 ,  G06F1/20 ,  G05B15/02

摘要： A motor driving control device, together with a controller, included in a motor driving system, has a control circuit controlling drive of a motor according to instruction information transmitted from the controller. The control circuit has a first acquisition unit acquiring setting reference information related to assignment of identification information for the motor driving control device itself, the setting reference information being input from outside, a setting unit setting the motor driving control device's identification information based on a magnitude of a setting voltage input from the outside and the setting reference information, and a second acquisition unit acquiring the instruction information based on the identification information set by the setting unit.

公开(公告)号：US10530280B2

公开(公告)日：2020-01-07

申请号：US16101599

申请日：2018-08-13

申请人： MINEBEA MITSUMI Inc.

发明人： Hiroyuki Kaidu ,  Masato Aoki

IPC分类号： H02P6/17 ,  H02P6/15 ,  H02P6/28 ,  H02P6/182

摘要： A motor driving control device includes a motor driving unit to drive the motor, a rotational position detecting circuit for generating rotational position information, and a controller. The controller outputs, to the motor driving unit, a first drive control signal for controlling an adjustment at a time of energization switching to reduce resonance between a natural frequency of the motor and a rotational component of the motor based on the rotational position information when an actual rotational speed of the motor is equal to or higher than a predetermined rotational speed lower than a target rotational speed, and outputs, to the driving unit, a second drive control signal for controlling regular energization switching without performing the adjustment at the time of energization switching when the actual rotational speed is less than the predetermined rotational speed and a set duty is within an error range of a maximum value.

公开(公告)号：US20190307017A1

公开(公告)日：2019-10-03

申请号：US16259315

申请日：2019-01-28

申请人： Minebea Mitsumi Inc.

发明人： Hiroyuki KAIDU ,  Masato Aoki

IPC分类号： H05K7/20 ,  H02P29/68

摘要： A motor drive control apparatus is mounted on a fan having a motor and an impeller coupled to the motor. The motor drive control apparatus includes a temperature sensor for measuring a temperature correlated with a temperature of the impeller, a temperature comparing portion for comparing a detected temperature based on a measurement result of the temperature sensor with a first temperature higher than a highest value of a design temperature of the fan, a rotation speed setting portion for setting an upper limit value of the rotation speed of the motor based on a comparison result the temperature comparing portion, a PWM command portion for controlling such that the rotation speed of the motor does not exceed the upper limit value set by the rotation speed setting portion.

公开(公告)号：US20180234038A1

公开(公告)日：2018-08-16

申请号：US15890632

申请日：2018-02-07

申请人： Minebea Mitsumi Inc.

发明人： Masato Aoki

IPC分类号： H02P6/15 ,  H02P6/08 ,  H02P6/24 ,  B60L3/00 ,  H02M7/5387 ,  H02P27/06

CPC分类号： H02P6/15 ,  B60L3/003 ,  H02M7/53875 ,  H02P3/12 ,  H02P6/085 ,  H02P6/16 ,  H02P6/24 ,  H02P27/06

摘要： A motor driving control device includes: a motor driving unit for selectively energizing coils of a plurality of phases of a motor; a control circuit unit for outputting a driving control signal to the motor driving unit to control an operation of the motor driving unit; and a position detector corresponding to one phase out of the plurality of phases, the position detector outputting a position signal having a phase varying according to a position of a rotor of the motor, wherein when starting activation of the motor, the control circuit unit executes first control for causing the motor to perform short-circuit braking, and second control for starting a first lock operation in which the rotor is locked by energizing coils of a predetermined energization phase out of the plurality of phases with a first current value after the first control is executed, and when executing the first control, the control unit performs the short-circuit braking from the start of the short-circuit braking of the motor until variation of a predetermined pattern of the phase of the position signal has not been detected over a first predetermined time, or from the start of the short-circuit braking of the motor until a second predetermined time longer than the first predetermined time has elapsed.

公开(公告)号：US11777430B2

公开(公告)日：2023-10-03

申请号：US17659355

申请日：2022-04-15

申请人： MINEBEA MITSUMI Inc.

发明人： Takahiro Suzuki ,  Masato Aoki ,  Hiroyuki Kaidu

IPC分类号： H02P23/14 ,  H02P29/024

CPC分类号： H02P23/14 ,  H02P29/024

摘要： A motor drive control device includes: a feedback control unit calculating an operation amount (Sad) of a motor such that a rotation speed S3 of the motor matches a target rotation speed S1; a drive control signal generation unit generating a drive control signal Sd based on the operation amount Sad; a current fluctuation detection unit detecting a fluctuation of a current flowing through the motor; a correction instruction unit instructing correction of the operation amount Sad when the fluctuation of the current flowing through the motor is detected by the current fluctuation detection unit; and a correction unit correcting the operation amount Sad and providing the corrected operation amount S2 to the drive control signal generation unit when the correction of the operation amount Sad is instructed from the correction instruction unit.

公开(公告)号：US11515814B2

公开(公告)日：2022-11-29

申请号：US17491598

申请日：2021-10-01

申请人： MINEBEA MITSUMI Inc.

发明人： Masato Aoki ,  Takahiro Suzuki ,  Tomotaka Sakuma

IPC分类号： F25D25/02 ,  H02P6/16

摘要： To provide a motor drive control device capable of determining the rotational direction of a motor using a simple configuration with a reduced number of lead wires from position sensors, and a method for controlling the motor drive control device. A control circuit unit of a motor drive control device includes a first comparator configured to compare the magnitudes of a first positive Hall signal and a first negative Hall signal output from a first Hall element, thereby generating a first position detection signal; a second comparator configured to compare the magnitudes of a second negative Hall signal output from a second Hall element and the first negative Hall signal, thereby generating a second position detection signal; and a rotational direction determination unit configured to compare the transitions of the first position detection signal and the second position detection signal, thereby determining the rotational direction of a motor.