Motor Drive Control Apparatus, Electric Power Steering Apparatus, and Vehicle

    公开(公告)号:US20180234039A1

    公开(公告)日:2018-08-16

    申请号:US15570453

    申请日:2017-04-26

    Applicant: NSK Ltd.

    Abstract: The motor drive control apparatus includes first and second rotation information detection function units and a power control unit. When it is determined the ignition switch is changed from the ON state to the OFF state, the power control unit intermittently supplies power from a battery to the first and second rotation information detection function units at a first interval while a motor rotation number is lower than a preset rotation number set in advance. When it is determined the motor rotation number becomes equal to or higher than the preset rotation number during this intermittent supply state, the power control unit intermittently supplies the power from the battery to the first and second rotation information detection function units at a second interval shorter than the first interval while the motor rotation number is equal to or higher than the preset rotation number.

    Electronic control unit for compensating for torque steer

    公开(公告)号:US09926006B2

    公开(公告)日:2018-03-27

    申请号:US15594420

    申请日:2017-05-12

    Abstract: The present invention relates to an electronic control unit and a method for compensating for a torque steer. The electronic control unit includes: a driving torque calculation unit that calculates a drive shaft driving torque value, which is a torque value transmitted from an engine to a drive shaft; a torque steer degree calculation unit that calculates the actual driving torque value of a vehicle based on the drive shaft driving torque value, and calculates a torque steer degree by using the actual driving torque value; a compensation current calculation unit that calculates a torque steer compensation current value that compensates for the torque steer using the torque steer degree; a direction compensation unit that calculates a direction compensation current value according to a travelling direction of the vehicle; and a motor driving control unit that calculates a basic control current value using a steering angle and a steering torque value, calculates the final control current value by adding the torque steer compensation current value and the direction compensation current value to the basic control current value, and generates a control current according to the final control current value in order to supply the control current value to an electric motor.

    Drive Control Unit for Motor
    44.
    发明申请

    公开(公告)号:US20180062556A1

    公开(公告)日:2018-03-01

    申请号:US15557289

    申请日:2016-02-25

    Inventor: Xiaofei YUE

    Abstract: A drive control unit in which a drive control system for a motor is made redundant so that a motor having two coil sets is individually driven and controlled for each coil set includes an inverter substrate on which a first inverter circuit that drives each coil of a first coil set, and a second inverter circuit that drives each coil of a second coil set are formed; a control substrate on which a first control circuit that includes a microcomputer which controls the first inverter circuit, and a second control circuit that includes a microcomputer which controls the second inverter circuit are formed; and a housing in which the inverter substrate and the control substrate are arranged in parallel to each other. The first control circuit is positioned on the front surface side, and the second control circuit is positioned on the rear surface side of the control substrate.

    Steering system clatter mitigation
    45.
    发明授权
    Steering system clatter mitigation 有权
    转向系统cl atter缓解

    公开(公告)号:US09168949B2

    公开(公告)日:2015-10-27

    申请号:US13865477

    申请日:2013-04-18

    CPC classification number: B62D5/0475 B62D5/0472 B62D6/06 B62D7/226

    Abstract: A steering system clatter mitigation apparatus and method. The clatter mitigation apparatus excites the steering system at a frequency within a range of an existing engine noise. The excitation of the steering system at a different frequency than the clatter sound greatly reduces the clatter sound. The sound produced by the excitation of the steering system is masked by the existing sound of the engine.

    Abstract translation: 一种转向系统疏散装置及方法。 咔哒声缓解装置以现有发动机噪声的范围内的频率激发转向系统。 转向系统以不同频率的啁啾声激发,大大降低了咔嗒声。 由转向系统的激励产生的声音被发动机的现有声音遮蔽。

    Electrical power steering apparatus
    46.
    发明授权
    Electrical power steering apparatus 有权
    电动助力转向装置

    公开(公告)号:US09038764B2

    公开(公告)日:2015-05-26

    申请号:US14100488

    申请日:2013-12-09

    Inventor: Motoo Nakai

    Abstract: A motor control circuit includes a power relay, a converter division, a smoothing condenser, a control circuit and a motor drive circuit, and is connected to a battery as high voltage power and to an electrical motor. The battery is connected with a driving battery having the high voltage such as 288V etc. A step down circuit reduces the high voltage to a low voltage such as 36V etc., charges a low voltage charge device and supplies drive power to the motor drive circuit. When the vehicle collision is occurred, the control circuit detects the collision by a value of detected acceleration, a power change relay is turned on to change to the power source from the low voltage charge device after voltage of the smoothing condenser is reduced, thereby connecting the low voltage to the motor drive circuit.

    Abstract translation: 电动机控制电路包括功率继电器,转换器部分,平滑电容器,控制电路和电动机驱动电路,并且作为高压电力连接到电池和电动机。 电池与具有288V等高电压的驱动电池连接。降压电路将高压降低至诸如36V等的低电压,对低电压充电装置充电并向电动机驱动电路提供驱动电力 。 当发生车辆碰撞时,控制电路通过检测到的加速度的值检测碰撞,在平滑电容器的电压减小之后,电力变化继电器接通从低电压充电装置变为电源,从而连接 电机驱动电路的低电压。

    ELECTRIC POWER STEERING APPARATUS AND CONTROL METHOD THEREFOR
    48.
    发明申请
    ELECTRIC POWER STEERING APPARATUS AND CONTROL METHOD THEREFOR 有权
    电力转向装置及其控制方法

    公开(公告)号:US20110035107A1

    公开(公告)日:2011-02-10

    申请号:US12933785

    申请日:2009-04-02

    CPC classification number: B26D5/04 B62D5/0457 B62D5/0475 H02J7/00 H02P6/08

    Abstract: An electric power steering apparatus comprises a charge-discharge circuit capable of configuring a circuit for charging an auxiliary power supply and a circuit for discharging a battery and the auxiliary power supply as well as configuring a discharge-preference circuit which enables only the discharge of the auxiliary power supply while avoiding the charge thereof. In the apparatus, a control circuit performs a power latch operation of carrying on control till the end of a predetermined period of time following an operation of turning off an ignition key, and also causes the charge-discharge circuit to configure the discharge-preference circuit thereby enabling steering assist accompanied by the discharge of the auxiliary power supply.

    Abstract translation: 一种电动助力转向装置,其特征在于,具备能够构成用于对辅助电源进行充电的电路的充放电电路,以及用于对电池和辅助电源进行放电的电路,以及构成放电偏好电路, 辅助电源,同时避免其充电。 在该装置中,控制电路进行进行控制的电源锁存动作,直到关闭点火钥匙的操作之后的预定时间段结束,并且还使充放电电路构成放电偏好电路 从而能够伴随着辅助电源的放电而进行转向辅助。

    ELECTRIC POWER STEERING SYSTEMS FOR VEHICLES WITH ADJUSTABLE TORSION BARS AND METHODS OF RETROFITTING ELECTRIC POWER STEERING SYSTEMS FOR VEHICLES
    50.
    发明申请
    ELECTRIC POWER STEERING SYSTEMS FOR VEHICLES WITH ADJUSTABLE TORSION BARS AND METHODS OF RETROFITTING ELECTRIC POWER STEERING SYSTEMS FOR VEHICLES 有权
    用于具有可调节扭力杆的车辆的电力转向系统和用于改装车辆的电力转向系统的方法

    公开(公告)号:US20090229909A1

    公开(公告)日:2009-09-17

    申请号:US12045955

    申请日:2008-03-11

    CPC classification number: B62D5/0475 B62D5/0463 B62D6/10

    Abstract: An electric power steering system for a vehicle includes a torsion bar, a controller, and an electric motor. The controller is coupled to the torsion bar, and is configured to at least facilitate adjusting the stiffness of the torsion bar based at least in part on a parameter pertaining to operation of the vehicle and generating a steering assist signal based at least in part on a deflection or a strain of the torsion bar or a torque carried by the torsion bar. The electric motor is coupled to the controller, and is configured to receive the steering assist signal therefrom and to at least facilitate implementing the steering assist signal.

    Abstract translation: 用于车辆的电动助力转向系统包括扭杆,控制器和电动马达。 控制器联接到扭杆,并且被配置为至少部分地基于与车辆的操作有关的参数来调节扭杆的刚度,并且至少部分地基于车辆的转向辅助信号产生转向辅助信号 扭杆的扭曲或应变或由扭力杆承载的扭矩。 电动机耦合到控制器,并且被配置为从其接收转向辅助信号,并且至少便于实现转向辅助信号。

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