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    • 1. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US07474070B2
    • 2009-01-06
    • US11709024
    • 2007-02-22
    • Yasushi MiyazawaKeiji Sato
    • Yasushi MiyazawaKeiji Sato
    • H02P7/00H02K17/32B62D5/00
    • B62D5/049B62D6/10G01L25/003
    • A torque detection portion includes a first arm having a detection coil L1 and a resistor R1, and a second arm having a detection coil L2 and a resistor R2. When a test mode is set, a reference voltage Vref having an abnormal value is outputted to a monitoring portion 13. An abnormal condition is intentionally caused in the monitoring portion 13. A main torque signal Vtm is compared with a sub torque signal Vts in the monitoring portion 13. When the reference voltage Vref set in the monitoring portion 13 has the abnormal value, a sub torque signal Vts having a level of 0 (Vts=0) is forcibly outputted in a normal condition. Then the signal Vtm is equal to the signal Vts, the monitoring portion 13 determines that a shortcircuit occurs between a main torque signal line and a sub torque signal line.
    • 扭矩检测部分包括具有检测线圈L1和电阻器R1的第一臂和具有检测线圈L2和电阻器R2的第二臂。 当设置测试模式时,具有异常值的参考电压Vref被输出到监视部分13.在监视部分13中有意地引起异常状况。将主转矩信号Vtm与副转矩信号Vts进行比较 在监视部13中设定的基准电压Vref为异常值的情况下,在正常状态下强制输出0(Vts = 0)的副转矩信号Vts。 然后信号Vtm等于信号Vts,监视部分13确定在主转矩信号线和副转矩信号线之间发生短路。
    • 3. 发明申请
    • Electric power steering apparatus
    • 电动助力转向装置
    • US20070205734A1
    • 2007-09-06
    • US11709024
    • 2007-02-22
    • Yasushi MiyazawaKeiji Sato
    • Yasushi MiyazawaKeiji Sato
    • H02P7/00
    • B62D5/049B62D6/10G01L25/003
    • A torque detection portion includes a first arm having a detection coil L1 and a resistor R1, and a second arm having a detection coil L2 and a resistor R2. When a test mode is set, a reference voltage Vref having an abnormal value is outputted to a monitoring portion 13. An abnormal condition is intentionally caused in the monitoring portion 13. A main torque signal Vtm is compared with a sub torque signal Vts in the monitoring portion 13. When the reference voltage Vref set in the monitoring portion 13 has the abnormal value, a sub torque signal Vts having a level of 0 (Vts=0) is forcibly outputted inanormal condition. Then the signal Vtm is equal to the signal Vts, the monitoring portion 13 determines that a shortcircuit occurs between a main torque signal line and a sub torque signal line.
    • 转矩检测部分包括具有检测线圈L 1和电阻器R 1的第一臂和具有检测线圈L 2和电阻器R 2的第二臂。 当设置测试模式时,具有异常值的参考电压V SUB ref被输出到监视部分13。 在监视部13中有意引起异常情况。 主监控部分13中的主转矩信号V SUB T M = 0)在非正常状态下强制输出。 然后,信号V SUB tm 等于信号V SUB,监视部分13确定在主转矩信号线和副转矩信号线之间发生短路。