公开(公告)号：US08659253B2

公开(公告)日：2014-02-25

申请号：US12977449

申请日：2010-12-23

申请人： Takafumi Satou ,  Nobuhiko Uryu ,  Yasuhiko Mukai

发明人： Takafumi Satou ,  Nobuhiko Uryu ,  Yasuhiko Mukai

IPC分类号： G05B5/00 ,  H02H7/08 ,  H02P1/04

CPC分类号： B62D5/0487 ,  B62D5/0484

摘要： An electric power steering device includes: an electric power source for supplying first current; a controller for setting a current instruction value; multiple electric power converters for converting the first current to second current corresponding to the current instruction value; multiple pairs of windings for generating a driving force of a motor; and a failure detection element for detecting failure of the electric power converters and the windings. The controller reduces the current instruction value to be equal to or smaller than a predetermined instruction value of a normal operation when the failure detection element detects the failure. The controller controls the electric power converter in a normal state to supply the second current to a corresponding winding.

摘要翻译： 电动助力转向装置包括：用于提供第一电流的电源; 用于设置当前指令值的控制器; 多个电力转换器，用于将第一电流转换为对应于当前指令值的第二电流; 用于产生电动机的驱动力的多对绕组; 以及用于检测电力转换器和绕组的故障的故障检测元件。 当故障检测元件检测到故障时，控制器将当前指令值减小到等于或小于正常操作的预定指令值。 控制器将电力转换器控制在正常状态，以将第二电流提供给相应的绕组。

公开(公告)号：US08798958B2

公开(公告)日：2014-08-05

申请号：US12899967

申请日：2010-10-07

申请人： Takafumi Satou ,  Takashi Suzuki ,  Yasuhiko Mukai ,  Nobuhiko Uryu

发明人： Takafumi Satou ,  Takashi Suzuki ,  Yasuhiko Mukai ,  Nobuhiko Uryu

IPC分类号： G01C9/00 ,  G01B7/30 ,  G01D5/14 ,  B62D5/04 ,  G01D5/244 ,  B62D15/02

CPC分类号： B62D15/0235 ,  B62D5/049 ,  G01D5/145 ,  G01D5/24461

摘要： Bridge circuits have half bridges formed of sensor elements, which vary respective impedances in accordance with a rotating magnetic field generated by a rotary object. A control unit acquires output signals produced from intermediate points of the half bridges, and calculates a rotation angle of the rotary object based on the output signals. The control unit determines that the output signal is abnormal, if a calculation value of the output signal calculated based on at least four output signals is outside a predetermined range. The control unit thus determines which one of the output signals has become abnormal due to failure or the like.

摘要翻译： 桥式电路具有由传感器元件形成的半桥，其根据由旋转体产生的旋转磁场改变各自的阻抗。 控制单元获取从半桥的中间点产生的输出信号，并且基于输出信号计算旋转对象的旋转角度。 如果基于至少四个输出信号计算的输出信号的计算值在预定范围之外，则控制单元确定输出信号异常。 因此，控制单元确定哪个输出信号由于故障等而变得异常。

公开(公告)号：US20110087456A1

公开(公告)日：2011-04-14

申请号：US12899967

申请日：2010-10-07

申请人： Takafumi SATOU ,  Takashi Suzuki ,  Yasuhiko Mukai ,  Nobuhiko Uryu

发明人： Takafumi SATOU ,  Takashi Suzuki ,  Yasuhiko Mukai ,  Nobuhiko Uryu

IPC分类号： G06F19/00 ,  G01B7/30

CPC分类号： B62D15/0235 ,  B62D5/049 ,  G01D5/145 ,  G01D5/24461

摘要： Bridge circuits have half bridges formed of sensor elements, which vary respective impedances in accordance with a rotating magnetic field generated by a rotary object. A control unit acquires output signals produced from intermediate points of the half bridges, and calculates a rotation angle of the rotary object based on the output signals. The control unit determines that the output signal is abnormal, if a calculation value of the output signal calculated based on at least four output signals is outside a predetermined range. The control unit thus determines which one of the output signals has become abnormal due to failure or the like.

摘要翻译： 桥式电路具有由传感器元件形成的半桥，其根据由旋转体产生的旋转磁场而改变各自的阻抗。 控制单元获取从半桥的中间点产生的输出信号，并且基于输出信号计算旋转对象的旋转角度。 如果基于至少四个输出信号计算的输出信号的计算值在预定范围之外，则控制单元确定输出信号异常。 因此，控制单元确定哪个输出信号由于故障等而变得异常。

公开(公告)号：US08949068B2

公开(公告)日：2015-02-03

申请号：US13287341

申请日：2011-11-02

申请人： Takafumi Satou ,  Nobuhiko Uryu

发明人： Takafumi Satou ,  Nobuhiko Uryu

IPC分类号： G01D5/244

CPC分类号： G01D5/24457

摘要： A rotation angle detection device uses a control unit to acquire output signals Vx1, Vx2, Vy1, Vy2 that are from four half-bridges, from the four half-bridges. The control unit calculates a rotation angle θ of a detection target based on the acquired output signals Vx1, Vx2, Vy1, Vy2. The control unit checks whether a mean value fixation abnormality is caused to any one of the four output signals Vx1, Vx2, Vy1, Vy2, based on calculation values C1 or C4 that are derived/yielded from the four output signals Vx1, Vx2, Vy1, Vy2. The mean value fixation abnormality caused to the output signals Vx1, Vx2, Vy1, Vy2 that yielded the calculation values C1 and C4 is appropriately determined.

摘要翻译： 旋转角度检测装置使用控制单元从四个半桥获取来自四个半桥的输出信号Vx1，Vx2，Vy1，Vy2。 控制单元计算旋转角度＆amp; 基于所获取的输出信号Vx1，Vx2，Vy1，Vy2检测目标。 控制单元基于从四个输出信号Vx1，Vx2，Vy1导出/生成的计算值C1或C4，检查是否对四个输出信号Vx1，Vx2，Vy1，Vy2中的任何一个产生平均值固定异常 ，Vy2。 适当确定产生计算值C1和C4的输出信号Vx1，Vx2，Vy1，Vy2的平均值固定异常。

公开(公告)号：US08781777B2

公开(公告)日：2014-07-15

申请号：US13199947

申请日：2011-09-13

申请人： Takafumi Satou ,  Nobuhiko Uryu

发明人： Takafumi Satou ,  Nobuhiko Uryu

IPC分类号： G01C17/38 ,  B62D15/02 ,  G01D5/244

CPC分类号： B62D15/0235 ,  G01D5/2449

摘要： A bridge circuit includes a plurality of half-bridges formed of sensor elements, which change impedance in accordance with a rotation angle of a detection target. A control circuit acquires output signals of the half-bridges and calculates a phase correction value for correcting a phase deviation. A memory circuit stores the phase correction value. The control circuit corrects a pre-correction rotation angle by the phase correction value. Since the pre-correction rotation angle is corrected by the phase correction value, a rotation angle of the detection target is detected with high accuracy even if the sensor elements are assembled with some positional deviations.

摘要翻译： 桥电路包括由传感器元件形成的多个半桥，其根据检测目标的旋转角度改变阻抗。 控制电路获取半桥的输出信号，并计算用于校正相位偏差的相位校正值。 存储电路存储相位校正值。 控制电路通过相位校正值校正预校正旋转角度。 由于通过相位校正值校正预校正旋转角度，即使传感器元件组装有某些位置偏差，也能够高精度地检测检测对象的旋转角度。

公开(公告)号：US20120116717A1

公开(公告)日：2012-05-10

申请号：US13287341

申请日：2011-11-02

申请人： Takafumi Satou ,  Nobuhiko Uryu

发明人： Takafumi Satou ,  Nobuhiko Uryu

IPC分类号： G06F19/00

CPC分类号： G01D5/24457

摘要： A rotation angle detection device uses a control unit to acquire output signals Vx1, Vx2, Vy1, Vy2 that are from four half-bridges, from the four half-bridges. The control unit calculates a rotation angle θ of a detection target based on the acquired output signals Vx1, Vx2, Vy1, Vy2. The control unit checks whether a mean value fixation abnormality is caused to any one of the four output signals Vx1, Vx2, Vy1, Vy2, based on calculation values C1 or C4 that are derived/yielded from the four output signals Vx1, Vx2, Vy1, Vy2. The mean value fixation abnormality caused to the output signals Vx1, Vx2, Vy1, Vy2 that yielded the calculation values C1 and C4 is appropriately determined.

摘要翻译： 旋转角度检测装置使用控制单元从四个半桥获取来自四个半桥的输出信号Vx1，Vx2，Vy1，Vy2。 控制单元计算旋转角度＆amp; 基于所获取的输出信号Vx1，Vx2，Vy1，Vy2检测目标。 控制单元基于从四个输出信号Vx1，Vx2，Vy1导出/生成的计算值C1或C4，检查是否对四个输出信号Vx1，Vx2，Vy1，Vy2中的任何一个产生平均值固定异常 ，Vy2。 适当确定产生计算值C1和C4的输出信号Vx1，Vx2，Vy1，Vy2的平均值固定异常。

公开(公告)号：US08659260B2

公开(公告)日：2014-02-25

申请号：US13020224

申请日：2011-02-03

申请人： Yasuhiko Mukai ,  Nobuhiko Uryu

发明人： Yasuhiko Mukai ,  Nobuhiko Uryu

IPC分类号： H02P27/04

CPC分类号： B62D5/0487 ,  B62D5/0403

摘要： A motor drive apparatus has a plurality of motor drive parts and a control unit. The control unit performs first and second failure detection processing for the motor drive parts before starting to drive the motor. If the first motor drive part is determined to have failure by the first failure detection processing, a first power supply relay for the first motor drive part is turned off and the second failure detection processing for the first motor drive part is inhibited. If the second motor drive part is determined to have no failure by the first failure detection processing and then by the second failure detection processing, the motor is started to operate.

摘要翻译： 电动机驱动装置具有多个电动机驱动部和控制部。 控制单元在开始驱动电动机之前对电动机驱动部进行第一和第二故障检测处理。 如果通过第一故障检测处理确定第一电动机驱动部件发生故障，则关闭用于第一电动机驱动部件的第一电力继电器，并且禁止第一电动机驱动部件的第二故障检测处理。 如果通过第一故障检测处理确定第二电动机驱动部件没有故障，然后通过第二故障检测处理，则马达开始运行。

公开(公告)号：US20110156627A1

公开(公告)日：2011-06-30

申请号：US12977489

申请日：2010-12-23

申请人： Kouichi NAKAMURA ,  Yasuhiko Mukai ,  Nobuhiko Uryu

发明人： Kouichi NAKAMURA ,  Yasuhiko Mukai ,  Nobuhiko Uryu

IPC分类号： H02H7/085

CPC分类号： B62D5/0403 ,  B62D5/0484 ,  B62D5/0487 ,  H02P29/032

摘要： In a multi-system motor drive apparatus, a power supply relay is interrupted when a first power supply system fails at time t0. A power control unit doubles a current supplied to an inverter of a second power supply system thereby to supplement the electric power, which has been supplied by an inverter of the first power supply system. The total output of inverters is thus maintained before and after the failure. After an elapse of a predetermined period, the electric power supplied by the second power supply system is reduced gradually so that the inverter of the second power supply system will not be operated to supply the doubled power for a long period.

摘要翻译： 在多系统电机驱动装置中，当第一电源系统在时间t0故障时，电源继电器中断。 功率控制单元将提供给第二电源系统的逆变器的电流加倍，从而补充由第一电源系统的逆变器提供的电力。 因此，故障之前和之后维护逆变器的总输出。 在经过预定时间段之后，由第二电源系统提供的电力逐渐减小，使第二供电系统的逆变器不能长时间地供给倍增电力。

公开(公告)号：US20120078560A1

公开(公告)日：2012-03-29

申请号：US13199947

申请日：2011-09-13

申请人： Takafumi Satou ,  Nobuhiko Uryu

发明人： Takafumi Satou ,  Nobuhiko Uryu

IPC分类号： G06F19/00

CPC分类号： B62D15/0235 ,  G01D5/2449

摘要： A bridge circuit includes a plurality of half-bridges formed of sensor elements, which change impedance in accordance with a rotation angle of a detection target. A control circuit acquires output signals of the half-bridges and calculates a phase correction value for correcting a phase deviation. A memory circuit stores the phase correction value. The control circuit corrects a pre-correction rotation angle by the phase correction value. Since the pre-correction rotation angle is corrected by the phase correction value, a rotation angle of the detection target is detected with high accuracy even if the sensor elements are assembled with some positional deviations.

摘要翻译： 桥电路包括由传感器元件形成的多个半桥，其根据检测目标的旋转角度改变阻抗。 控制电路获取半桥的输出信号，并计算用于校正相位偏差的相位校正值。 存储电路存储相位校正值。 控制电路通过相位校正值校正预校正旋转角度。 由于通过相位校正值校正预校正旋转角度，即使传感器元件组装有某些位置偏差，也能够高精度地检测检测对象的旋转角度。

公开(公告)号：US08248010B2

公开(公告)日：2012-08-21

申请号：US12975910

申请日：2010-12-22

申请人： Yasuhiko Mukai ,  Nobuhiko Uryu

发明人： Yasuhiko Mukai ,  Nobuhiko Uryu

IPC分类号： H02P7/08

CPC分类号： B62D5/0487 ,  G01R31/025 ,  G01R31/42 ,  H02P29/0241 ,  H02P2207/05

摘要： A voltage application unit applies voltage to windings of a motor without passing though an inverter unit. A first detection unit detects a short circuit failure in switching elements of the inverter unit based on a terminal voltage between each of the switching elements and a corresponding winding and a power voltage of a power supply. Before rotation of the motor, when no short circuit failure is detected and when a switching unit switches at least one of the high and low potential-side switching elements of the inverter unit on and subsequently switches all the switching elements off, a second failure detection unit determines whether the switching unit is incapable of rendering the switching element non-conductive based on the terminal voltage and the power voltage.

摘要翻译： 电压施加单元不经过逆变器单元对电动机的绕组施加电压。 第一检测单元基于各开关元件之间的端子电压和相应的绕组以及电源的电源电压来检测逆变器单元的开关元件的短路故障。 在电动机旋转之前，当没有检测到短路故障时，并且当开关单元接通逆变器单元的高低电位侧开关元件中的至少一个并且随后切换所有开关元件时，第二故障检测 单元确定开关单元是否不能基于端子电压和电源电压使开关元件不导通。