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公开(公告)号：US20220161851A1
公开(公告)日：2022-05-26
申请号：US17670925
申请日：2022-02-14
申请人： NSK LTD.
摘要： A calibration method in which, a rotation angle calculation device (20, 30) calculates (S2) a rotation angle θc based on a detection signal of a sensor, transmits (S3) rotation angle data Dc indicating the rotation angle θc to a calibration device (40), and transmits (S3) time difference data Dt relating to a time difference after having captured the detection signal until transmitting the rotation angle data to the calibration device, and in which the calibration device measures (S1) a rotation angle θr, clocks (S1, S4) a measurement time tm at which the rotation angle θr is measured and a transmission time tt of transmitting or receiving the rotation angle data, and acquires (S5, S6) calibration data Dc of the rotation angle data by comparing the rotation angle θr measured at a time tc2 obtained by going back in time from the transmission time tt by the time difference after having captured the detection signal until transmitting the rotation angle data and the rotation angle data Da with each other.
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2.发明授权公开(公告)号：US10471985B2
公开(公告)日：2019-11-12
申请号：US15531535
申请日：2016-03-09
申请人： NSK LTD.
发明人： Kouichi Nampei , Yoshihiro Aosaki
IPC分类号： B62D5/04 , H02P29/028
摘要： [Problem]An object of the present invention is to provide a motor control unit that improves a discontinuous feeling of an assist by flexibly making an adjustment of a current command value of a normal system when a failure occurs in any system of multi-system motor control, and enables smooth handling, and to provide an electric power steering apparatus and a vehicle equipped with the same.[Means for Solving the Problem]A motor control unit comprises motor driving circuits of respective winding systems that supply a motor having multi-system motor windings with driving currents; and a control calculating section that calculates a current command value of each winding system for driving the motor, when a failure occurs in the motor winding or the motor driving circuit in any of the systems, performs a first change of changing a characteristic of the current command value of a normal system to a first characteristic that forms a characteristic equivalent to a total of the current command values at normal time, after performing the first change, performs a second change of changing the characteristic of the current command value to a second characteristic whose output is more suppressed than the first characteristic, and controls the motor driving circuit.
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3.发明授权公开(公告)号：US11338846B2
公开(公告)日：2022-05-24
申请号：US17299884
申请日：2020-12-21
申请人： NSK LTD.
摘要： A detection signal correction method includes: calculating a rotation angle of a rotation shaft of a motor, based on a detection signal of a sensor; calculating a steering velocity of a steering shaft based on the rotation angle; calculating an error of the detection signal; and correcting the error of the detection signals when the steering velocity is equal to or greater than a steering velocity threshold value and the error of the detection signal is equal to or greater than an error threshold value.
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4.发明申请Motor Control Apparatus, Electric Power Steering Apparatus and Vehicle Using the Same 有权电机控制装置，电动转向装置及其使用的车辆公开(公告)号：US20160134212A1
公开(公告)日：2016-05-12
申请号：US14899051
申请日：2013-12-13
申请人： NSK LTD.
发明人： Yusuke Kikuchi , Atsushi Horikoshi , Satoshi Ozaki , Yoshihiro Aosaki , Takeshi Senba , Hisayoshi Koiwai , Shigeo Shinohara , Kenji Mori , Masahiro Okutani , Takaaki Sekine
CPC分类号： H02P6/12 , B62D5/0484 , B62D5/0487 , H02H7/0844 , H02H7/1225 , H02M7/53871 , H02M2001/325 , H02P6/085 , H02P6/14 , H02P21/22 , H02P27/06 , H02P29/032
摘要： A motor control apparatus includes a motor current shutoff unit inserted between a multi-phase inverter circuit and a multi-phase electric motor to shut off a current for each of plural phases, the inverter circuit including an arm for each of the plural phases, a redundant arm unit including one or more arms, a connection selecting unit selecting which one of windings of the electric motor is to be connected to each of the one or more arms of the redundant arm unit, an abnormal arm detection unit detecting an abnormality in each of the plural phases of the inverter circuit, and an abnormality control unit shutting off connection between an abnormal arm and the motor when the abnormal arm detection unit detects the abnormal arm, and connecting the one or more arms of the redundant arm unit to a winding of the motor shut off.
摘要翻译： 电动机控制装置包括插入在多相逆变器电路和多相电动机之间的电动机电流切断装置，以切断多相的电流，所述逆变器电路包括用于各相的臂，a 包括一个或多个臂的冗余臂单元，连接选择单元，其选择要连接到所述冗余臂单元的所述一个或多个臂中的每一个的所述电动机的绕组中的哪一个;检测每个所述异常的异常臂检测单元 以及异常控制单元，当异常臂检测单元检测到异常臂时，断开异常臂与电机之间的连接，并将冗余臂单元的一个或多个臂连接到绕组 的电机关闭。
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公开(公告)号：US10056854B2
公开(公告)日：2018-08-21
申请号：US15307417
申请日：2015-07-13
申请人： NSK LTD.
发明人： Kenji Mori , Kouichi Nampei , Yoshihiro Aosaki
CPC分类号： H02P6/17 , B62D5/046 , B62D5/0484 , B62D5/0487 , H02P21/22 , H02P25/22 , H02P27/08 , H02P29/0241
摘要： A motor control unit that does not make an occurrence of a noisy sound and a vibration and does not give a steering discomfort by changing parameters of a current feedback control section even if an electric characteristic of the motor varies with a system-switching due to a failure occurrence, and to an electric power steering apparatus using the same and a vehicle. The motor control unit controls a motor having multi-system motor windings by means of a 3-phase current feedback system provided with a current control section through a motor driving circuit of each winding system, having a function that changes by switching parameters of the current control section corresponding to a driving system number of the multi-system motor windings.
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6.发明授权Physical quantity detecting device and electric power steering apparatus using same 有权物理量检测装置和使用该物理量检测装置的电动助力转向装置公开(公告)号：US09573619B2
公开(公告)日：2017-02-21
申请号：US14431821
申请日：2013-10-09
申请人： NSK LTD.
发明人： Masanao Fukunaga , Shuji Endo , Yoshihiro Aosaki
CPC分类号： B62D5/0463 , B62D5/049 , G01L5/221 , G08C25/00 , H04Q9/00 , H04Q2209/823 , H04Q2209/86
摘要： A physical quantity detecting device that can determine abnormality of a signal transmission system between a physical quantity detector and a controller and an electric power steering apparatus using the physical quantity detecting device are provided. The physical quantity detecting device includes a physical quantity detector configured to detect a physical quantity and to output a physical quantity detection signal and a controller configured to receive the physical quantity outputted from the physical quantity detector via a transmission line and to perform a control operation on the basis of the physical quantity. The physical quantity detector outputs a diagnostic signal for detecting abnormality of a transmission system between the controller and the physical quantity detector and the controller includes an abnormality determining unit configured to determine abnormality of the transmission system on the basis of the diagnostic signal when receiving the diagnostic signal.
摘要翻译： 提供一种物理量检测装置，其能够确定物理量检测器与控制器之间的信号传输系统的异常以及使用该物理量检测装置的电动助力转向装置。 物理量检测装置包括：物理量检测器，被配置为检测物理量并输出物理量检测信号;以及控制器，被配置为经由传输线接收从物理量检测器输出的物理量，并且执行对 物理量的基础。 物理量检测器输出用于检测控制器和物理量检测器之间的传输系统的异常的诊断信号，并且控制器包括异常确定单元，其被配置为当接收诊断时基于诊断信号来确定传输系统的异常 信号。
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公开(公告)号：US11753075B2
公开(公告)日：2023-09-12
申请号：US17670925
申请日：2022-02-14
申请人： NSK LTD.
CPC分类号： B62D15/0235 , B62D5/0463 , G01D5/16 , G01D18/00
摘要： A calibration method in which, a rotation angle calculation device (20, 30) calculates (S2) a rotation angle θc based on a detection signal of a sensor, transmits (S3) rotation angle data Dc indicating the rotation angle θc to a calibration device (40), and transmits (S3) time difference data Dt relating to a time difference after having captured the detection signal until transmitting the rotation angle data to the calibration device, and in which the calibration device measures (S1) a rotation angle θr, clocks (S1, S4) a measurement time tm at which the rotation angle θr is measured and a transmission time tt of transmitting or receiving the rotation angle data, and acquires (S5, S6) calibration data Dc of the rotation angle data by comparing the rotation angle θr measured at a time tc2 obtained by going back in time from the transmission time tt by the time difference after having captured the detection signal until transmitting the rotation angle data and the rotation angle data Da with each other.
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公开(公告)号：US11292519B2
公开(公告)日：2022-04-05
申请号：US17299921
申请日：2020-12-16
申请人： NSK LTD.
摘要： A calibration method in which, a rotation angle calculation device calculates a rotation angle based on a detection signal of a sensor, transmits rotation angle data indicating the rotation angle to a calibration device, and transmits time difference data relating to a time difference after having captured the detection signal until transmitting the rotation angle data to the calibration device, and in which the calibration device measures a rotation angle, clocks a measurement time at which the rotation angle is measured and a transmission time of transmitting or receiving the rotation angle data, and acquires calibration data of the rotation angle data by comparing the rotation angle measured at a time obtained by going back in time from the transmission time by the time difference after having captured the detection signal until transmitting the rotation angle data and the rotation angle data with each other.
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公开(公告)号：US09634587B2
公开(公告)日：2017-04-25
申请号：US14899051
申请日：2013-12-13
申请人： NSK LTD.
发明人： Yusuke Kikuchi , Atsushi Horikoshi , Satoshi Ozaki , Yoshihiro Aosaki , Takeshi Senba , Hisayoshi Koiwai , Shigeo Shinohara , Kenji Mori , Masahiro Okutani , Takaaki Sekine
IPC分类号： H02P6/12 , B62D5/04 , H02P27/06 , H02M7/5387 , H02H7/122 , H02P6/08 , H02P6/14 , H02P21/22 , H02M1/32 , H02H7/08
CPC分类号： H02P6/12 , B62D5/0484 , B62D5/0487 , H02H7/0844 , H02H7/1225 , H02M7/53871 , H02M2001/325 , H02P6/085 , H02P6/14 , H02P21/22 , H02P27/06 , H02P29/032
摘要： A motor control apparatus includes a motor current shutoff unit inserted between a multi-phase inverter circuit and a multi-phase electric motor to shut off a current for each of plural phases, the inverter circuit including an arm for each of the plural phases, a redundant arm unit including one or more arms, a connection selecting unit selecting which one of windings of the electric motor is to be connected to each of the one or more arms of the redundant arm unit, an abnormal arm detection unit detecting an abnormality in each of the plural phases of the inverter circuit, and an abnormality control unit shutting off connection between an abnormal arm and the motor when the abnormal arm detection unit detects the abnormal arm, and connecting the one or more arms of the redundant arm unit to a winding of the motor shut off.
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10.发明申请公开(公告)号：US20150239494A1
公开(公告)日：2015-08-27
申请号：US14431821
申请日：2013-10-09
申请人： NSK LTD.
发明人： Masanao Fukunaga , Shuji Endo , Yoshihiro Aosaki
CPC分类号： B62D5/0463 , B62D5/049 , G01L5/221 , G08C25/00 , H04Q9/00 , H04Q2209/823 , H04Q2209/86
摘要： A physical quantity detecting device that can determine abnormality of a signal transmission system between a physical quantity detector and a controller and an electric power steering apparatus using the physical quantity detecting device are provided. The physical quantity detecting device includes a physical quantity detector configured to detect a physical quantity and to output a physical quantity detection signal and a controller configured to receive the physical quantity outputted from the physical quantity detector via a transmission line and to perform a control operation on the basis of the physical quantity. The physical quantity detector outputs a diagnostic signal for detecting abnormality of a transmission system between the controller and the physical quantity detector and the controller includes an abnormality determining unit configured to determine abnormality of the transmission system on the basis of the diagnostic signal when receiving the diagnostic signal.
摘要翻译： 提供一种物理量检测装置，其能够确定物理量检测器与控制器之间的信号传输系统的异常以及使用该物理量检测装置的电动助力转向装置。 物理量检测装置包括：物理量检测器，被配置为检测物理量并输出物理量检测信号;以及控制器，被配置为经由传输线接收从物理量检测器输出的物理量，并且执行对 物理量的基础。 物理量检测器输出用于检测控制器和物理量检测器之间的传输系统的异常的诊断信号，并且控制器包括异常确定单元，其被配置为当接收诊断时基于诊断信号来确定传输系统的异常 信号。
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