公开(公告)号：US5801504A

公开(公告)日：1998-09-01

申请号：US713105

申请日：1996-09-16

申请人： Shuji Endo ,  Yusuke Itakura ,  Hideyuki Kobayashi

发明人： Shuji Endo ,  Yusuke Itakura ,  Hideyuki Kobayashi

IPC分类号： B62D5/04 ,  H02P7/00 ,  H02P7/14

CPC分类号： B62D5/0463 ,  B62D5/046 ,  H02P7/04

摘要： A control apparatus for an electric power steering system assures stability of the feedback control and control generation of noise from the control circuit when the steering wheel automatically returns to the neutral position by means of the self-aligning torque in order to improve the feeling of the steering operation. In the motor driving circuit connecting four semiconductor elements in the shape of H bridge, the semiconductors of the first arm are driven by the duty ratio D1 while the semiconductors of the second arm are driven by the duty radio D2 defined by the function of the duty ratio D1 (D2 is longer in time than D1).

摘要翻译： 用于电动助力转向系统的控制装置确保当方向盘通过自动对准转矩自动返回到中立位置时反馈控制的稳定性和控制来自控制电路的噪声的产生，以便改善 转向操作。 在连接H桥形状的四个半导体元件的电机驱动电路中，第一臂的半导体由占空比D1驱动，而第二臂的半导体由占空比函数D2定义的占空比无线电D2驱动 比率D1（D2时间长于D1）。

公开(公告)号：US6013994A

公开(公告)日：2000-01-11

申请号：US931619

申请日：1997-09-16

申请人： Shuji Endo ,  Hideyuki Kobayashi ,  Kei Chin ,  Yusuke Itakura ,  Hideaki Kawada

发明人： Shuji Endo ,  Hideyuki Kobayashi ,  Kei Chin ,  Yusuke Itakura ,  Hideaki Kawada

IPC分类号： B62D5/04 ,  H02P7/14

CPC分类号： B62D5/0463

摘要： To provide a controller of an electric power-steering system, capable of improving the steering performance by presuming a motor angular speed .omega. in a range in which the angular speed of a motor is small and moreover very accurately presuming the motor angular speed and thereby, completely showing the functions for compensating the inertia of the motor and controlling the astringency of a vehicle. Because the presumed error of a back electromotive force between a model motor and a motor to be actually mounted is proportional to a motor current, a dead zone of a motor angular speed having a width proportional to a motor current is set to the presumed value of the motor angular speed. When the motor current is small, the width of the dead zone also decreases. Therefore, it is possible to presume an angular speed .omega. even in a region where the motor angular speed is small. Moreover, a motor angular speed is presumed by defining impedance models of motor driving systems in an intermittent mode and a continuous mode.

摘要翻译： 为了提供一种电动助力转向系统的控制器，其能够通过在电动机的角速度小的范围内假定电动机角速度ω而改善转向性能，并且还非常准确地假设电动机的角速度， 完全显示了补偿电机惯性和控制车辆涩味的功能。 由于模型电动机和实际安装的电动机之间的反电动势的推测误差与电动机电流成比例，所以将具有与电动机电流成比例的宽度的电动机角速度的死区设定为 电机角速度。 当电动机电流小时，死区的宽度也减小。 因此，即使在电动机角速度小的区域中也可以设定角速度ω。 此外，通过以间歇模式和连续模式定义电机驱动系统的阻抗模型来推定电机角速度。

公开(公告)号：US06658333B2

公开(公告)日：2003-12-02

申请号：US10060292

申请日：2002-02-01

申请人： Hideaki Kawada ,  Yusuke Itakura ,  Yasuhiko Miyaura ,  Shuji Endo ,  Hisayoshi Koiwai

发明人： Hideaki Kawada ,  Yusuke Itakura ,  Yasuhiko Miyaura ,  Shuji Endo ,  Hisayoshi Koiwai

IPC分类号： B62D504

CPC分类号： B62D5/0484 ,  B62D5/049

摘要： A control apparatus of power steering device having functions of monitoring intermediate troubles such as offset or drift out of signal troubles of torque sensor, and limiting the current for limiting the assist function is presented. In a control apparatus of power steering device for controlling a motor on the basis of a current control value calculated from a steering assist command value calculated by calculating means on the basis of a steering torque generated on a steering shaft, and a current value of a motor for applying a steering assist force to a steering mechanism, wherein the difference of a main torque signal and a sub torque signal of a torque sensor for detecting the steering torque is stored preliminarily, and the difference of the main torque signal and the sub torque signal during operation is compared with the stored value, and at least the current control value is limited when the difference based on the comparison is a condition larger than a first prescribed value and continues for a time longer than a first prescribed time.

公开(公告)号：US07091684B2

公开(公告)日：2006-08-15

申请号：US11191995

申请日：2005-07-29

申请人： Hideyuki Kobayashi ,  Yusuke Itakura

发明人： Hideyuki Kobayashi ,  Yusuke Itakura

IPC分类号： H02P7/00

CPC分类号： B62D5/046 ,  B62D5/0484 ,  B62D5/049

摘要： An object of the present invention is to provide an electric power steering apparatus which can continue control even if some of current detectors that detect phase currents of a three-phase motor break down. Phase currents of the failure current detectors are calculated by using detected signals from the normal current detectors, and the electric power steering apparatus can be continued to be controlled by using the current values.

摘要翻译： 本发明的目的是提供一种能够继续控制的电动助力转向装置，即使检测到三相电动机的相电流的一些电流检测器分解。 通过使用来自正常电流检测器的检测信号来计算故障电流检测器的相电流，并且可以通过使用电流值继续控制电动转向装置。

公开(公告)号：US20060022626A1

公开(公告)日：2006-02-02

申请号：US11191995

申请日：2005-07-29

申请人： Hideyuki Kobayashi ,  Yusuke Itakura

发明人： Hideyuki Kobayashi ,  Yusuke Itakura

IPC分类号： H02P7/00

CPC分类号： B62D5/046 ,  B62D5/0484 ,  B62D5/049

摘要： An object of the present invention is to provide an electric power steering apparatus which can continue control even if some of current detectors that detect phase currents of a three-phase motor break down. Phase currents of the failure current detectors are calculated by using detected signals from the normal current detectors, and the electric power steering apparatus can be continued to be controlled by using the current values.

公开(公告)号：US20090071745A1

公开(公告)日：2009-03-19

申请号：US11915073

申请日：2006-05-19

申请人： Yusuke Itakura ,  Nobuyuki Kobayashi ,  Tomonori Hisanaga ,  Osamu Miyoshi ,  Shinji Kanai

发明人： Yusuke Itakura ,  Nobuyuki Kobayashi ,  Tomonori Hisanaga ,  Osamu Miyoshi ,  Shinji Kanai

IPC分类号： B62D5/04

CPC分类号： B62D5/046 ,  B62D5/0481 ,  H02P29/032

摘要： The present invention provides a high-performance control unit for an electric power steering apparatus structured such as to improve a steering feeling at a time of a control stop of the control apparatus by calculating a steering torque correction short-amount without stopping a function of a motor control signal monitoring means and applying an electromagnetic brake to the motor in correspondence to the steering torque correction short-amount even in the case of stopping a motor control during generation of a steering assist torque, lighten a load applied to a driver due to a rapid release of a tire torsion force at a time of stopping the assist, and prevent a driver from feeling an uncomfortable feeling.

摘要翻译： 本发明提供一种用于电动助力转向装置的高性能控制单元，该电动助力转向装置构造成通过计算转向转矩校正短量来改善控制装置的控制停止时的转向感，而不停止 电动机控制信号监视装置，并且即使在转向辅助转矩的产生期间停止电动机控制的情况下，也可以对应于转向转矩校正短的量向电动机施加电磁制动，减轻由于 在停止辅助时快速释放轮胎扭转力，并且防止驾驶员感到不适感。

公开(公告)号：US06808043B2

公开(公告)日：2004-10-26

申请号：US10349894

申请日：2003-01-23

申请人： Hideaki Kawada ,  Yusuke Itakura ,  Yasuhiko Miyaura

发明人： Hideaki Kawada ,  Yusuke Itakura ,  Yasuhiko Miyaura

IPC分类号： B62D504

CPC分类号： B62D5/049

摘要： An electric power steering device enabled to surely detect a fault of its motor current detector circuit by avoiding the disturbance by an electrically insulated oxide film formed on the contact surface between the commutator and the brush of the motor. An ignition key is turned on, then the motor applied voltage is increased with time to break the oxide film so that the motor current flows normally. The estimated motor current is then compared with the detected motor current. When the absolute value of the difference between those estimated motor current and detected motor currents is over a predetermined limit value, it is determined that the motor current detection circuit is defective. It is also possible to break the oxide film by integrating each difference between the motor current command value and the detected motor current value, thereby increasing the current control value step by step and increase voltage applied to the motor.

公开(公告)号：US06874594B2

公开(公告)日：2005-04-05

申请号：US10264007

申请日：2002-10-02

申请人： Yusuke Itakura ,  Hisayoshi Koiwai

发明人： Yusuke Itakura ,  Hisayoshi Koiwai

IPC分类号： B62D6/00 ,  B62D5/04 ,  B62D101/00 ,  B62D119/00 ,  B62D137/00

CPC分类号： B62D5/0457 ,  B62D5/0481

摘要： To provide a controller for an electric power steering system capable of balancing a steering assist force by correcting an offset and improving the steering feeling. A controller for an electric power steering system having motor driving means for driving a motor for electric power steering and motor current detecting means for detecting a current running through the motor is used in which the motor-driving means realizes a motor stop state in which no current runs through the motor under a non-energized state, uses a motor current detection signal under the motor stop state as the offset value of the motor current detecting means, and automatically corrects the offset of the motor current detecting means in accordance with the offset value.

摘要翻译： 提供能够通过校正偏移平衡转向辅助力并改善转向感觉的电动助力转向系统的控制器。 一种电动助力转向系统的控制装置，具有用于驱动用于电动助力转向的电动机的电动机驱动装置和用于检测通过电动机的电流的电动机电流检测装置，其中电动机构驱动装置实现电动机停止状态，其中不存在 电流在非通电状态下通过电动机，在电动机停止状态下使用电动机电流检测信号作为电动机电流检测装置的偏移值，并根据偏移量自动校正电动机电流检测装置的偏移 值。

公开(公告)号：US06381528B1

公开(公告)日：2002-04-30

申请号：US09928427

申请日：2001-08-14

申请人： Hideaki Kawada ,  Yusuke Itakura ,  Toru Sakaguchi

发明人： Hideaki Kawada ,  Yusuke Itakura ,  Toru Sakaguchi

IPC分类号： G06F700

CPC分类号： B62D5/0493

摘要： There is provided a control unit for an electric power steering apparatus that controls a motor for giving steering assist force to a steering mechanism, based on a current control value calculated from a steering assist command value calculated based on the steering torque generated in the steering shaft, and a current value of the motor. The control unit has a first controller and a second controller for controlling the motor. Based on a current command value calculated by the second controller, the second controller monitors the first controller that controls the driving of the motor based on the steering assist command value calculated by the first controller. When the first controller is in a status not controlling the steering assist command value, the function of the second controller for monitoring the first controller is limited.

公开(公告)号：US07559405B2

公开(公告)日：2009-07-14

申请号：US10569625

申请日：2004-08-26

申请人： Kazuhiro Kumaido ,  Yusuke Itakura ,  Yuho Aoki ,  Nobuhiro Kubo

发明人： Kazuhiro Kumaido ,  Yusuke Itakura ,  Yuho Aoki ,  Nobuhiro Kubo

IPC分类号： B62D5/04

CPC分类号： B62D5/0481 ,  B62D5/049

摘要： The present invention provides a controller of an electric power steering device which does not apply an uncomfortable feeling to a operation of steering wheel while securing a fault determination confirming period enough long to prevent an erroneous detection of a torque sensor fault, and can secure a safety operation of steering wheel, even in the case that an output value of a torque sensor detecting a steering torque of a steering wheel becomes abnormal.

摘要翻译： 本发明提供一种电动助力转向装置的控制装置，其不会对方向盘的操作施加不舒适的感觉，同时确保故障确定确认期足够长以防止扭矩传感器故障的错误检测，并且可以确保安全 即使在检测到方向盘的转向转矩的转矩传感器的输出值变得异常的情况下也能够进行方向盘的动作。