公开(公告)号：US20100121531A1

公开(公告)日：2010-05-13

申请号：US12617293

申请日：2009-11-12

申请人： Yoshihiro ONIWA ,  Yasuo Shimizu ,  Shigeru Yamawaki ,  Kazushige Sugamata

发明人： Yoshihiro ONIWA ,  Yasuo Shimizu ,  Shigeru Yamawaki ,  Kazushige Sugamata

IPC分类号： G06F19/00 ,  B62D6/00

CPC分类号： B62D6/008 ,  B62D5/0463 ,  B62D5/0466

摘要： The present invention discloses a controller of an electric power-assist steering system including a torque detector for detecting a torque applied with a steering wheel that steers a steering system; a steering status determining section for determining a steering status of either “turn” or “return” of a steering wheel; and a motor controlling unit for driving a motor n accordance with a target current value calculated based on at least a torque value from the torque detector and the steering status of either “turn” or “return” of the steering wheel from the steering status determining section, wherein the motor controlling unit sets a target current value right after a time when the steering status is switched between “turn” and “return” to be substantially equal to an actual current value right before a time when the steering status is switched between “turn” and “return”.

摘要翻译： 本发明公开了一种电动助力转向系统的控制器，其包括转矩检测器，用于检测用转向系统转向的方向盘施加的转矩; 用于确定方向盘的“转弯”或“返回”的转向状态的转向状态确定部分; 以及电动机控制单元，用于根据来自转矩检测器的至少一个转矩值计算的目标电流值和方向盘的“转动”或“返回”的转向状态从转向状态确定 其中所述电动机控制单元在所述转向状态在“转动”和“返回”之间切换的时间之后立即设定目标电流值，使其基本上等于在所述转向状态被切换之前的实际当前值 “转”和“回”。

公开(公告)号：US20120271513A1

公开(公告)日：2012-10-25

申请号：US13452321

申请日：2012-04-20

申请人： Atsuhiko YONEDA ,  Yasuo SHIMIZU ,  Yoshihiro ONIWA ,  Yukihiro WAKAKUMA ,  Takashi MIYOSHI

发明人： Atsuhiko YONEDA ,  Yasuo SHIMIZU ,  Yoshihiro ONIWA ,  Yukihiro WAKAKUMA ,  Takashi MIYOSHI

IPC分类号： B62D6/10

CPC分类号： B62D5/0493 ,  B62D5/0484

摘要： In the event of a failure of a first electric motor drive signal generator, e.g., the microcomputer, which generates a first electric motor drive signal for performing a feedback control, a second electric motor drive signal generator, e.g., a PWM signal generator, which is made up of discrete circuit components, directly converts a steering torque signal into a second electric motor drive signal. An electric motor, which generates the assistive steering force, is driven by the second electric motor drive signal.

摘要翻译： 在第一电动机驱动信号发生器（例如，产生用于执行反馈控制的第一电动机驱动信号的微型计算机）发生故障的情况下，第二电动机驱动信号发生器，例如PWM信号发生器，其中， 由分立电路部件组成，将转向转矩信号直接转换成第二电动机驱动信号。 产生辅助转向力的电动机由第二电动机驱动信号驱动。

公开(公告)号：US20090314573A1

公开(公告)日：2009-12-24

申请号：US12324024

申请日：2008-11-26

申请人： Yoshihiro ONIWA ,  Takashi Miyoshi ,  Koichi Fujita ,  Atsuhiko Yoneda ,  Yasuo Shimizu

发明人： Yoshihiro ONIWA ,  Takashi Miyoshi ,  Koichi Fujita ,  Atsuhiko Yoneda ,  Yasuo Shimizu

IPC分类号： B62D5/04 ,  G01L3/10

CPC分类号： G01L3/102 ,  B62D5/046 ,  B62D5/0481 ,  B62D5/049 ,  B62D6/10 ,  G01L3/105 ,  G01L5/221

摘要： A magnetostrictive torque sensor comprising: a magnetostrictive film provided on a ferromagnetic shaft; a bias magnetization device which applies a bias magnetic field to the shaft to magnetize the shaft; and a detection device which detects a change in magnetism of the magnetostrictive film, wherein: a torque acting on the shaft calculated based on the detection results of the detection device; and the bias magnetization device applies a bias magnetic field to the shaft at a predetermined timing.

摘要翻译： 一种磁致伸缩扭矩传感器，包括：设在铁磁轴上的磁致伸缩膜; 偏置磁化装置，其向所述轴施加偏置磁场以使所述轴磁化; 以及检测装置，其检测所述磁致伸缩膜的磁性变化，其中：基于所述检测装置的检测结果计算的作用在所述轴上的转矩; 并且偏置磁化装置在预定的时刻向轴施加偏置磁场。