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    CONTROL DEVICE FOR POWER STEERING DEVICE, AND POWER STEERING DEVICE
    1.
    发明申请
    CONTROL DEVICE FOR POWER STEERING DEVICE, AND POWER STEERING DEVICE 审中-公开

    公开(公告)号：US20190023309A1

    公开(公告)日：2019-01-24

    申请号：US15752679

    申请日：2016-07-29

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Mitsuo SASAKI ,  Takumi HISAZUMI ,  Shigehisa AOYAGI

    IPC: B62D5/04 ,  H02P6/16

    CPC classification number: B62D5/049 ,  B62D5/046 ,  B62D5/0463 ,  H02P6/16 ,  H02P29/032

    Abstract: A power steering device includes a steering mechanism, an electric motor for applying a steering assist force to the steering mechanism, and a first motor rotational position sensor for sensing as an actual axis phase a rotational position of a rotor of the electric motor. A control device is configured to: receive input of a signal of first actual axis phase outputted from the first motor rotational position sensor; receive input of a signal of value of electric current flowing through the electric motor; estimate as a control phase a phase of an induced voltage occurring in the electric motor, based on the signal of value of electric current; and determine whether or not the first motor rotational position sensor is abnormal, based on a difference between the first actual axis phase and the control phase.

    Vehicle Steering Apparatus Having Automatic Steering Function
    2.
    发明申请
    Vehicle Steering Apparatus Having Automatic Steering Function 审中-公开

    公开(公告)号：US20180154936A1

    公开(公告)日：2018-06-07

    申请号：US15737509

    申请日：2016-06-09

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Masaru YAMASAKI ,  Tadashi SATOU ,  Mitsuo SASAKI

    IPC: B62D15/02 ,  B62D6/08 ,  B62D5/04

    CPC classification number: B62D15/025 ,  B62D1/286 ,  B62D5/0484 ,  B62D6/08 ,  B62D15/0285

    Abstract: Provided is a method and apparatus capable of rapidly releasing an automatic steering mode and switching to a manual steering mode in which steering is performed by a driver when there is a steering input from a driver in a steering wheel, so that it is possible to prevent disturbance in a behavior of a vehicle caused by an excessive manipulation of the driver who memorizes strangeness. In the vehicle steering apparatus, a state that a driver holds the input unit of the steering input means is detected on the basis of a characteristic change caused by an increase of a mass or inertial moment in the input unit of the steering input means or a part subordinate thereto. In addition, a switching operation between the automatic steering mode and the manual steering mode is performed on the basis of a result of the holding detection.

    VEHICLE-MOUNTED DEVICE ACTUATOR AND POWER STEERING DEVICE
    5.
    发明申请
    VEHICLE-MOUNTED DEVICE ACTUATOR AND POWER STEERING DEVICE 审中-公开

    公开(公告)号：US20200023887A1

    公开(公告)日：2020-01-23

    申请号：US16333555

    申请日：2017-03-15

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Mitsuo SASAKI ,  Takumi HISAZUMI

    IPC: B62D5/04 ,  B62D6/02

    Abstract: A power steering device includes a steering mechanism structured to steer a steerable wheel in accordance with steering of a steering wheel. A first sensor is structured to sense a specific state quantity of steering. A second sensor is structured to sense the specific state quantity. A first actuation part is structured to apply a steering force to the steering mechanism. A second actuation part is structured to apply a steering force to the steering mechanism. A first microprocessor is configured to receive an output signal from the first sensor, and control driving of the first actuation part based on the output signal received from the first sensor. A second microprocessor is configured to receive an output signal from the first sensor and an output signal from the second sensor, and control driving of the second actuation part based on the output signal received from the first sensor.

    POWER STEERING DEVICE AND POWER STEERING DEVICE CONTROL UNIT
    6.
    发明申请
    POWER STEERING DEVICE AND POWER STEERING DEVICE CONTROL UNIT 审中-公开
    动力转向装置和动力转向装置控制装置

    公开(公告)号：US20170015348A1

    公开(公告)日：2017-01-19

    申请号：US15124460

    申请日：2015-01-14

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Mitsuo SASAKI ,  Takumi HISAZUMI

    IPC: B62D5/04 ,  B62D6/00

    CPC classification number: B62D5/049 ,  B62D5/046 ,  B62D5/0484 ,  B62D6/00

    Abstract: Disclosed is a power steering device having at least two redundant steering torque sensor units TS1 and TS2, at least two redundant steering angel sensor units AS1 and AS2, at least two redundant motor position sensor units 61 and 62 and a control unit configured to: in a normal state, perform steering assist control based on a steering torque detection signal of one of the steering torque sensor units TS1 and TS2, a steering angle detection signal of one of the steering angle sensor units AS1 and AS2 and a motor position detection signal of one of the motor position sensor units 61 and 62; perform redundant monitoring on the steering torque sensor units TS1 and TS2, the steering angel sensor units AS1 and AS2 and the motor position sensor units 61 and 62; and, upon detection of an abnormality in any sensor output signal by the redundant monitoring, switch the abnormal signal to an alternative signal. It is possible by this control process to preserve the steering assist function even in the occurrence of the abnormality in the sensor output signal.

    Abstract translation: 公开了一种动力转向装置，其具有至少两个冗余转向转矩传感器单元TS1和TS2，至少两个冗余转向角传感器单元AS1和AS2，至少两个冗余电动机位置传感器单元61和62以及控制单元， 正常状态，基于转向转矩传感器单元TS1和TS2中的一个的转向转矩检测信号，转向角传感器单元AS1和AS2中的一个的转向角检测信号和电动机位置检测信号执行转向辅助控制 马达位置传感器单元61和62中的一个; 对转向转矩传感器单元TS1和TS2，转向角传感器单元AS1和AS2以及电动机位置传感器单元61和62执行冗余监视; 并且在通过冗余监视检测到任何传感器输出信号中的异常时，将异常信号切换到替代信号。 即使发生传感器输出信号的异常，也可以通过该控制处理来保持转向辅助功能。

    ELECTRONIC CONTROL DEVICE, CONTROL SYSTEM, AND RESET DETERMINATION METHOD
    7.
    发明申请
    ELECTRONIC CONTROL DEVICE, CONTROL SYSTEM, AND RESET DETERMINATION METHOD 有权

    公开(公告)号：US20210129855A1

    公开(公告)日：2021-05-06

    申请号：US16472533

    申请日：2017-12-04

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Shogo NAKAO ,  Nobuki SATO ,  Mitsuo SASAKI

    IPC: B60W50/02 ,  G05D1/00

    Abstract: An electronic control device includes a control command generation unit that generates and outputs a control command for controlling a first control object; a communication unit that performs communication with another electronic control device that controls a second control object; a communication abnormality determination unit that determines whether communication with the another electronic control device by the communication unit is abnormal; and a reset determination unit that determines whether the another electronic control device is reset based on a change in a sensor signal related to a state of the second control object when the communication abnormality determination unit determines that the communication with the another electronic control device is abnormal.

    POWER STEERING APPARATUS AND CONTROL APPARATUS FOR POWER STEERING APPARATUS
    8.
    发明申请
    POWER STEERING APPARATUS AND CONTROL APPARATUS FOR POWER STEERING APPARATUS 审中-公开

    公开(公告)号：US20180312191A1

    公开(公告)日：2018-11-01

    申请号：US15771570

    申请日：2016-10-31

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Mitsuo SASAKI ,  Makoto GOTO

    IPC: B62D5/04 ,  B62D6/00

    CPC classification number: B62D5/049 ,  B62D5/0484

    Abstract: One of objects of the present invention is to provide a power steering apparatus capable of improving accuracy of abnormality detection.A power steering apparatus includes a steering mechanism configured to transmit a rotation of a steering wheel to a turning target wheel, an electric motor configured to provide a steering force to the steering mechanism, a torque sensor configured to detect a steering torque generated on the steering mechanism, and a control unit configured to calculate, based on the steering torque, an instruction signal for controlling driving of the electric motor and output the instruction signal to the electric motor. The control unit includes a steering direction signal reception portion configured to receive a steering direction signal indicating a rotational direction of the steering wheel, and an abnormality detection circuit configured to carry out detection of an abnormality in the power steering apparatus based on a change in the steering torque in a predetermined region including a region in which the steering direction signal is switched.

    IN-VEHICLE DEVICE CONTROLLER AND POWER STEERING DEVICE
    10.
    发明申请
    IN-VEHICLE DEVICE CONTROLLER AND POWER STEERING DEVICE 有权
    车内装置控制器和动力转向装置

    公开(公告)号：US20160332660A1

    公开(公告)日：2016-11-17

    申请号：US15111237

    申请日：2015-02-05

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Mitsuo SASAKI ,  Takumi HISAZUMI

    IPC: B62D5/04 ,  B62D6/00 ,  B62D6/10

    CPC classification number: B62D5/0493 ,  B62D5/046 ,  B62D5/0484 ,  B62D6/002 ,  B62D6/10

    Abstract: An in-vehicle device controller has at least two redundant operating condition detection units. Under normal circumstances, the controller performs actuator drive control based on an operating condition detection signal of one of the operating condition detection units. Upon detection of an abnormality in the signal transmission state, data state or operating status of one of the at least two operating condition detection units, the controller performs actuator drive control based on an operating condition detection signal of another one of the at least two operating condition detection units in which no abnormality is present. By this control, the actuator function is preserved even in the event of the abnormality in the operating condition detection unit or operating condition detection signal.

    Abstract translation: 车载设备控制器具有至少两个冗余操作条件检测单元。 在正常情况下，控制器基于其中一个运行状态检测单元的运行状态检测信号执行致动器驱动控制。 在检测到所述至少两个操作状态检测单元之一的信号传输状态，数据状态或操作状态的异常时，所述控制器基于所述至少两个操作中的另一个的操作条件检测信号来执行致动器驱动控制 没有异常的条件检测单元。 通过该控制，即使在操作状态检测单元或操作状态检测信号中发生异常的情况下也能够保持致动器功能。

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