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1. 发明授权

US06874594B2 Controller for electric power steering system 有权
标题翻译：电动助力转向系统控制器
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。

2. 发明授权

US5920174A Control apparatus of electric power steering apparatus 失效
标题翻译：电动助力转向装置的控制装置
公开(公告)号：US5920174A
公开(公告)日：1999-07-06
申请号：US656329
申请日：1996-06-14
申请人： Hideaki Kawada , Hiroyuki Kanoh , Hisayoshi Koiwai , Syuji Endo , Yoshinori Sugiyama , Yuji Kouzaki
发明人： Hideaki Kawada , Hiroyuki Kanoh , Hisayoshi Koiwai , Syuji Endo , Yoshinori Sugiyama , Yuji Kouzaki
IPC分类号： B62D5/04
CPC分类号： B62D5/049
摘要： A control apparatus of an electric power steering apparatus capable of firmly detecting an abnormality of a torque detection value, caused by a drift occurred in a torque sensor and by a connector contact resistor, with a simple arrangement. A current supplied from a power supply flows through a potentiometer (3A) of a torque sensor (3), this current is supplied to a current detecting resistor (13g), a drift occurred in the torque sensor (3) is detected by a voltage across terminals of this resistor, the detected drift detection voltage V.sub.is is read in a microcomputer (21), and the drift detection voltage V.sub.is is compared with a set value to judge as to whether or not the drift is present within a normal range. The torque sensor is constructed of a main potentiometer (3.sub.M) and a sub-potentiometer (3.sub.S). A change amount .DELTA.V.sub.M is calculated from a difference between a presently detected value and a previously detected value of the torque detection voltage V.sub.2M of the main potentiometer. Also, a change amount .DELTA.V.sub.S as to the sub-potentiometer is similarly calculated. An abnormality of the torque detection value is judged in response to these change amounts .DELTA.V.sub.M and .DELTA.V.sub.S.
摘要翻译： PCT No.PCT / JP95 / 02098 Sec。 371日期1996年6月14日第 102（e）日期1996年6月14日PCT提交1995年10月13日PCT公布。公开号WO96 / 11831 日期：1996年04月25日一种电动助力转向装置的控制装置，能够通过简单的布置牢固地检测由转矩传感器和连接器接触电阻器发生的漂移引起的转矩检测值的异常。从电源供给的电流流过转矩传感器（3）的电位计（3A），该电流被提供给电流检测电阻（13g），转矩传感器（3）中发生的漂移被电压在该电阻器的两端，检测到的漂移检测电压Vis被读入微型计算机（21），并将漂移检测电压Vis与设定值进行比较，以判断漂移是否存在于正常范围内。扭矩传感器由主电位器（3M）和副电位器（3S）构成。根据当前检测值与主电位计的转矩检测电压V2M的先前检测值的差计算变化量DELTA VM。此外，类似地计算关于副电位计的变化量DELTA VS。根据这些变化量DELTA VM和DELTA VS来判断转矩检测值的异常。

3. 发明申请

US20070007070A1 Electric power steering unit and controller thereof 审中-公开
标题翻译：电动助力转向装置及其控制器
公开(公告)号：US20070007070A1
公开(公告)日：2007-01-11
申请号：US11448872
申请日：2006-06-08
申请人： Takeshi Sakata , Nobuyuki Kobayashi , Hisayoshi Koiwai
发明人： Takeshi Sakata , Nobuyuki Kobayashi , Hisayoshi Koiwai
IPC分类号： B62D5/04
CPC分类号： H01R4/34 , B62D5/0403
摘要： An electric power steering unit includes: a controller 4 for controlling a drive of an electric motor 16; and a terminal base 4B, which is provided in the controller 4, which constitutes a signal terminal of the controller 4, wherein the terminal base 4B fastens a terminal by means of fastening with a bolt. Terminals of pieces of harness 16A to 16C extending from the electric motor 16 are fastened to output terminals 23A to 23C on the terminal base 4B by means of fastening bolts. The electric power steering unit more preferably includes: a contact resistance detection member (35, 36, 37) for detecting a contact resistance between each output terminal 23A to 23C and each terminal TN of the harness 16A to 16C; and an electric current control member (21, 22) for controlling a drive current supplied to the electric motor 16 with detection information obtained by this detection member.
摘要翻译：电动助力转向装置包括：控制电动机16的驱动的控制器4; 以及设置在控制器4中的终端基座4B，其构成控制器4的信号端子，其中终端基座4B通过用螺栓的紧固来固定终端。从电动马达16延伸的线束16A至16C的端子通过紧固螺栓紧固到端子基座4B上的输出端子23A至23C。电动动力转向装置更优选地包括：用于检测每个输出端子23A至23C与线束16A至16C的每个端子TN之间的接触电阻的接触电阻检测部件（35,36,37）; 以及电流控制部件（21,22），用于通过由该检测部件获得的检测信息来控制供给电动机16的驱动电流。

4. 发明授权

US06837331B2 Electric power steering device 有权
标题翻译：电动助力转向装置
公开(公告)号：US06837331B2
公开(公告)日：2005-01-04
申请号：US10773892
申请日：2004-02-06
申请人： Hideaki Kawada , Hisayoshi Koiwai , Yusuke Itakura , Yasuhiko Miyaura
发明人： Hideaki Kawada , Hisayoshi Koiwai , Yusuke Itakura , Yasuhiko Miyaura
IPC分类号： B62D5/04
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.
摘要翻译：一种电动助力转向装置，其能够通过避免由形成在电动机的换向器和电刷之间的接触表面上的电绝缘氧化膜的干扰来确定地检测其电动机电流检测器电路的故障。点火钥匙打开，电机施加的电压随时间增加，破坏氧化膜，使电机电流正常流动。然后将估计的电动机电流与检测到的电动机电流进行比较。当这些估计电动机电流和检测到的电动机电流之间的差的绝对值超过预定极限值时，确定电动机电流检测电路有缺陷。也可以通过积分电动机电流指令值和检测到的电动机电流值之间的每个差异来破坏氧化膜，从而逐步增加电流控制值并增加施加到电动机的电压。

5. 发明授权

US06658333B2 Control apparatus of power steering device 有权
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.

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