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    • 1. 发明授权
    • Power steering apparatus
    • 动力转向装置
    • US07642738B2
    • 2010-01-05
    • US11845847
    • 2007-08-28
    • Kenichi HamadaTamotsu YamauraAtsushi MatsuokaYutaka Makino
    • Kenichi HamadaTamotsu YamauraAtsushi MatsuokaYutaka Makino
    • H02P7/00
    • B62D5/065B62D5/0496
    • A power steering apparatus includes an electric motor, a temperature sensor, and a control unit. The electric motor produces an assist steering effort in a steering system. The temperature sensor measures a temperature of a first portion subject to thermal influence of operation of the electric motor. The control unit determines an estimated temperature of a second portion in accordance with a value of a motor current, the second portion being subject to thermal influence of operation of the electric motor. The control unit determines a first upper limit value in accordance with the measured temperature; determines a second upper limit value in accordance with the estimated temperature; limit the motor current to a smaller one of the first and second upper limit values, when determining that the temperature sensor is normal; limit the motor current to the second upper limit value, when determining that the temperature sensor is abnormal.
    • 动力转向装置包括电动机,温度传感器和控制单元。 电动机在转向系统中产生辅助转向力。 温度传感器测量受到电动机操作的热影响的第一部分的温度。 控制单元根据电动机电流的值确定第二部分的估计温度,第二部分受到电动机的操作的热影响。 控制单元根据测量的温度确定第一上限值; 根据估计的温度确定第二上限值; 当确定温度传感器正常时,将电机电流限制在第一和第二上限值中较小的一个; 当确定温度传感器异常时,将电机电流限制到第二上限值。
    • 2. 发明授权
    • Failure detection apparatus for resolver
    • 解析器故障检测装置
    • US07994776B2
    • 2011-08-09
    • US12369141
    • 2009-02-11
    • Tamotsu YamauraKenichi HamadaYutaka Makino
    • Tamotsu YamauraKenichi HamadaYutaka Makino
    • G01B7/30G01R35/00
    • G01B7/30G01D3/08
    • A failure detection apparatus for a resolver outputting a sine signal indicative of sin θ and a cosine signal indicative of cos θ according to a rotational angle θ of a rotator, includes an inspection value calculating section configured to calculate an inspection value based on at least one of the sine signal and the cosine signal; a failure detecting section configured to judge whether the resolver is in a failure state or not on the basis of the inspection value; a counting section configured to gradually increase a count value with a lapse of time when the failure detecting section is determining that the resolver is in the failure state, and configured to gradually decrease the count value with a lapse of time when the failure detecting section is determining that the resolver is not in the failure state; and a failure deciding section configured to finally decide that the resolver has caused the failure on the basis of the count value.
    • 一种用于解析器的故障检测装置,其输出指示sin& Thetas的正弦信号; 和表示cos&θ的余弦信号; 根据旋转角度& 包括检测值计算部,被配置为基于正弦信号和余弦信号中的至少一个来计算检查值; 故障检测部,被配置为基于检查值判断解析器是否处于故障状态; 计数部,被配置为当故障检测部确定解析器处于故障状态时随着时间的流逝逐渐增加计数值,并且被配置为当故障检测部分为 确定解析器不处于故障状态; 以及故障判定部,其被配置为基于所述计数值最终确定所述解析器已经导致所述故障。
    • 3. 发明申请
    • POWER STEERING APPARATUS
    • 动力转向装置
    • US20080048591A1
    • 2008-02-28
    • US11845847
    • 2007-08-28
    • Kenichi HAMADATamotsu YamauraAtsushi MatsuokaYutaka Makino
    • Kenichi HAMADATamotsu YamauraAtsushi MatsuokaYutaka Makino
    • B62D5/04
    • B62D5/065B62D5/0496
    • A power steering apparatus includes an electric motor, a temperature sensor, and a control unit. The electric motor produces an assist steering effort in a steering system. The temperature sensor measures a temperature of a first portion subject to thermal influence of operation of the electric motor. The control unit determines an estimated temperature of a second portion in accordance with a value of a motor current, the second portion being subject to thermal influence of operation of the electric motor. The control unit determines a first upper limit value in accordance with the measured temperature; determines a second upper limit value in accordance with the estimated temperature; limit the motor current to a smaller one of the first and second upper limit values, when determining that the temperature sensor is normal; limit the motor current to the second upper limit value, when determining that the temperature sensor is abnormal.
    • 动力转向装置包括电动机,温度传感器和控制单元。 电动机在转向系统中产生辅助转向力。 温度传感器测量受到电动机操作的热影响的第一部分的温度。 控制单元根据电动机电流的值确定第二部分的估计温度,第二部分受到电动机的操作的热影响。 控制单元根据测量的温度确定第一上限值; 根据估计的温度确定第二上限值; 当确定温度传感器正常时,将电机电流限制在第一和第二上限值中较小的一个; 当确定温度传感器异常时,将电机电流限制到第二上限值。
    • 4. 发明申请
    • FAILURE DETECTION APPARATUS FOR RESOLVER
    • 解决方案故障检测装置
    • US20090206828A1
    • 2009-08-20
    • US12369141
    • 2009-02-11
    • Tamotsu YAMAURAKenichi HamadaYutaka Makino
    • Tamotsu YAMAURAKenichi HamadaYutaka Makino
    • G01B7/30H02K29/08
    • G01B7/30G01D3/08
    • A failure detection apparatus for a resolver outputting a sine signal indicative of sin θ and a cosine signal indicative of cos θ according to a rotational angle θ of a rotator, includes an inspection value calculating section configured to calculate an inspection value based on at least one of the sine signal and the cosine signal; a failure detecting section configured to judge whether the resolver is in a failure state or not on the basis of the inspection value; a counting section configured to gradually increase a count value with a lapse of time when the failure detecting section is determining that the resolver is in the failure state, and configured to gradually decrease the count value with a lapse of time when the failure detecting section is determining that the resolver is not in the failure state; and a failure deciding section configured to finally decide that the resolver has caused the failure on the basis of the count value.
    • 用于根据转子的旋转角度θ输出表示sinθ的正弦信号和表示cosθ的余弦信号的解算器的故障检测装置包括:检查值计算部,其被配置为基于至少一个 的正弦信号和余弦信号; 故障检测部,被配置为基于检查值判断解析器是否处于故障状态; 计数部,被配置为当故障检测部确定解析器处于故障状态时随着时间的流逝逐渐增加计数值,并且被配置为当故障检测部分为 确定解析器不处于故障状态; 以及故障判定部,其被配置为基于所述计数值最终确定所述解析器已经导致所述故障。