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    • 6. 发明公开
    • MOTOR CONTROL DEVICE AND STEERING CONTROL DEVICE
    • 电机控制装置和转向控制装置
    • EP3219579A1
    • 2017-09-20
    • EP17161364.9
    • 2017-03-16
    • JTEKT CORPORATION
    • KAWAMURA, HiroshiTAKAHASHI, ToshihiroNIWA, TomohiroTOYOZUMI, KenichiHASHIMOTO, Takahito
    • B62D5/04B60L3/00H02P27/08H02P31/00H02P6/28
    • H02P6/12B60L3/0046B60L3/0069B60L3/04B60L3/12B60L11/126B62D5/046B62D5/0484B62D5/0487B62D15/025H02P6/16H02P6/28H02P25/22H02P27/08H02P31/00
    • A steering control device capable of suppressing a reduction in reliability even in the case where the redundancy of the power source is increased is provided. A steering ECU (30) includes two control systems (31, 32) in which different external power sources (43, 44) are connected to two drive circuits (50, 60). The low potential sides of the drive circuits (50, 60) and the low potential sides of the corresponding external power sources (43, 44) are independently connected to each other via power source ground lines (GL1, GL2) for the two control systems (31, 32). The low potential sides of the drive circuits (50, 60) are connected to each other via an internal ground (33). Two current detection circuits (54, 64) are provided between the power source ground lines (GL1, GL2) and the internal ground (33) to detect power source ground current values (Ignd1, Ignd2), respectively. The steering ECU (30) includes microcomputers (55, 65) that detect a ground abnormality on the basis of the results of detection performed by the current detection circuits (54, 64).
    • 提供一种即使在电源的冗余度增加的情况下也能够抑制可靠性下降的转向控制装置。 转向ECU(30)包括两个控制系统(31,32),其中不同的外部电源(43,44)连接到两个驱动电路(50,60)。 驱动电路(50,60)的低电位侧和对应的外部电源(43,44)的低电位侧经由两个控制系统的电源接地线(GL1,GL2)而彼此独立地连接 (31,32)。 驱动电路(50,60)的低电位侧经由内部接地(33)彼此连接。 在电源地线(GL1,GL2)和内部地线(33)之间分别提供两个电流检测电路(54,64)以分别检测电源地电流值(Ignd1,Ignd2)。 转向ECU(30)包括根据电流检测电路(54,64)的检测结果来检测接地异常的微型计算机(55,65)。