公开(公告)号：US09667179B2

公开(公告)日：2017-05-30

申请号：US15145858

申请日：2016-05-04

Applicant: NSK LTD.

Inventor： Takayoshi Sugawara ,  Yousuke Imamura ,  Hiroyasu Kumagai

IPC: H02P21/00 ,  H02P6/00 ,  H02P23/14 ,  H02P6/10 ,  B62D5/04 ,  H02P6/15

CPC classification number: H02P6/10 ,  B62D5/046 ,  B62D5/0472 ,  H02P6/15 ,  H02P6/28 ,  H02P21/22 ,  H02P23/14

Abstract: A multi-phase motor control apparatus that reduces the occurrence of the vibrations and the noises by setting the shift amount per time more finely after realizing a reduction in processing ability of a CPU by using a one-shunt type current detection circuit and an electric power steering apparatus using the same. The apparatus includes a PWM-signal generating section that generates plural second each-phase PWM-signals within two control periods based on the current estimation value and the carrier signal, and in a case that a phase shift amount of a predetermined phase in a just before control period is zero and a phase shift amount of a predetermined phase in a present control period is not zero, the phase shift control section gradually increases the phase shift amount from zero in the present control period and a next control period, and uses the second each-phase PWM-signals in the next control period.

公开(公告)号：US08831832B2

公开(公告)日：2014-09-09

申请号：US14234176

申请日：2013-03-28

Applicant: NSK Ltd.

Inventor： Yuzuru Hoshi ,  Toru Sakaguchi ,  Sachio Nakayama ,  Masahiro Maeda ,  Kenji Mori ,  Yousuke Imamura

IPC: A01B69/00 ,  H02P21/00 ,  B62D5/04 ,  H02P6/08 ,  B60T8/1755 ,  B62D6/00 ,  B62D7/15

CPC classification number: H02P21/0035 ,  B60T8/1755 ,  B62D5/046 ,  B62D5/0463 ,  B62D5/0484 ,  B62D5/049 ,  B62D6/003 ,  B62D6/008 ,  B62D7/159 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P6/08 ,  H02P29/0241

Abstract: A motor control apparatus that is capable of making the whole control system robust not only with respect to motor parameter variations such as the temperature variation and the manufacturing unevenness but also with respect to disturbances while using a cheap and compact one-shunt type current detecting circuit and simultaneously diagnosing an estimation error and an electric power steering apparatus provide with the motor control apparatus.

Abstract translation: 一种电动机控制装置，其能够使整个控制系统不仅在诸如温度变化和制造不均匀性之间的电动机参数变化方面稳固，而且在使用便宜且紧凑的单分流型电流检测电路 同时诊断估计误差和电动助力转向装置提供电动机控制装置。

公开(公告)号：US20140156144A1

公开(公告)日：2014-06-05

申请号：US14234176

申请日：2013-03-28

Applicant: NSK LTD.

Inventor： Yuzuru Hoshi ,  Toru Sakaguchi ,  Sachio Nakayama ,  Masahiro Maeda ,  Kenji Mori ,  Yousuke Imamura

IPC: H02P21/00 ,  B62D5/04 ,  H02P6/08

CPC classification number: H02P21/0035 ,  B60T8/1755 ,  B62D5/046 ,  B62D5/0463 ,  B62D5/0484 ,  B62D5/049 ,  B62D6/003 ,  B62D6/008 ,  B62D7/159 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P6/08 ,  H02P29/0241

Abstract: A motor control apparatus that is capable of making the whole control system robust not only with respect to motor parameter variations such as the temperature variation and the manufacturing unevenness but also with respect to disturbances while using a cheap and compact one-shunt type current detecting circuit and simultaneously diagnosing an estimation error and an electric power steering apparatus provide with the motor control apparatus.

Abstract translation: 一种电动机控制装置，其能够使整个控制系统不仅在诸如温度变化和制造不均匀性之间的电动机参数变化方面稳固，而且在使用便宜且紧凑的单分流型电流检测电路 同时诊断估计误差和电动助力转向装置提供电动机控制装置。