-
公开(公告)号：US09505429B2
公开(公告)日：2016-11-29
申请号：US14443783
申请日：2014-09-30
Applicant: NSK Ltd.
Inventor： Yong Wei , Masahiro Maeda
CPC classification number: B62D5/0469 , B62D5/0409
Abstract: There is provided an electric power steering apparatus capable of alleviating an impact force at the time of an end contact, while giving natural and smooth steering feeling to a driver without degrading the steering feeling. When steering angle (θs) is equal to or larger than a limit starting steering angle (θst), a voltage target value (Vt) of an electric motor (13) is limited, and an upper limit (current limiting value I_Lim) of a current command value (Iref) is set based on the limited voltage target value (Vt) and the motor rotation speed (N) by use of a motor output characteristic of the electric motor (13). Then, the electric motor (13) is driven and controlled based on a current command value (Iref_Lim) that has been limited with the current command value (I_Lim).
Abstract translation: 提供一种能够减轻终端接触时的冲击力的电动助力转向装置，同时给驾驶员提供自然和平稳的转向感，而不会降低转向感。 当转向角（θs）等于或大于极限起动转向角（θst）时，限制电动机（13）的电压目标值（Vt），并且限制了电动机（13）的上限（电流限制值I_Lim） 通过使用电动机（13）的电动机输出特性，基于限制电压目标值（Vt）和电动机转速（N）来设定电流指令值（Iref）。 然后，根据当前指令值（I_Lim）限制的电流指令值（Iref_Lim）来驱动和控制电动机（13）。
-
公开(公告)号：US11827291B2
公开(公告)日：2023-11-28
申请号：US17281083
申请日：2020-10-02
Applicant: NSK LTD.
Inventor： Yasutoshi Miki , Masahiro Maeda
CPC classification number: B62D5/046 , B62D5/0409 , H02P21/05 , H02P21/22 , H02P27/08
Abstract: A motor control device includes a third harmonic calculation unit configured to calculate a first third harmonic on a basis of an average value between a voltage command value of a maximum phase with a maximum duty ratio and a voltage command value of a minimum phase with a minimum duty ratio among three-phase voltage command values; an amplitude calculation unit configured to calculate an amplitude of the three-phase voltage command values; a third harmonic conversion unit configured to convert the first third harmonic into a second third harmonic on a basis of the first third harmonic and the amplitude; a correction unit configured to correct the three-phase voltage command values by subtracting the second third harmonic from the three-phase voltage command values.
-
13.发明授权Motor control apparatus and electric power steering apparatus provided with the same 有权电动机控制装置及配备有该动力转向装置公开(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
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。
-
14.发明申请公开(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
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。
-
-
-
Search Results
14
records
(took 0.014 seconds)
