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：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：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：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：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：US08596408B2

公开(公告)日：2013-12-03

申请号：US13323114

申请日：2011-12-12

申请人： Nobuhiko Uryu

发明人： Nobuhiko Uryu

IPC分类号： B62D5/04 ,  G01L3/10

CPC分类号： B62D5/0487 ,  B62D6/10 ,  G01L25/003

摘要： An electric power steering device includes a torque detector that includes a torque sensor and a control unit. When abnormality has not occurred in a torque signal, an output section in the torque sensor transmits a normal signal that is a value based on the torque signal and is between a second lower limit that is greater than a first lower limit and a second upper limit that is less than a first upper limit. When abnormality has occurred in the torque signal, the output section transmits a first fault notification signal that is a value between the first and second lower limits or a second fault notification signal that is a value between the first and second upper limits. The control unit identifies a fault and calculates an amount of assist for reducing steering torque based on a signal transmitted from the output section.

摘要翻译： 电动助力转向装置包括扭矩检测器，其包括转矩传感器和控制单元。 当转矩信号中没有发生异常时，转矩传感器的输出部发送作为基于转矩信号的值的正常信号，并且处于大于第一下限的第二下限和第二上限之间 这小于第一个上限。 当扭矩信号发生异常时，输出部分发送作为第一和第二下限之间的值的第一故障通知信号或作为第一和第二上限之间的值的第二故障通知信号。 控制单元识别故障，并且基于从输出部发送的信号计算用于减小转向转矩的辅助量。

公开(公告)号：US20120194109A1

公开(公告)日：2012-08-02

申请号：US13357843

申请日：2012-01-25

申请人： Nobuhiko Uryu ,  Takashi Suzuki

发明人： Nobuhiko Uryu ,  Takashi Suzuki

IPC分类号： H02P6/08

CPC分类号： B62D5/046 ,  B62D5/0403

摘要： A power conversion device includes a first inverter circuit and a second inverter circuit, a capacitor, and a microcomputer. The microcomputer switches a control operation, according to the steering state of a steering wheel, between a first state where a first duty center value is shifted to be lower than an output center value and a second duty center value is shifted to be higher than the output center value, and a second state where the first duty center value is shifted to be higher than the output center value and the second duty center value is shifted to be lower than the output center value. This can reduce a difference in heat loss between FETs while reducing the ripple current of the capacitor.

摘要翻译： 电力转换装置包括第一逆变器电路和第二逆变器电路，电容器和微型计算机。 微型计算机根据方向盘的转向状态在第一占空中心值偏移到低于输出中心值的第一状态和第二占空中心值之间切换控制操作，使其高于 输出中心值以及第一占空中心值偏移到高于输出中心值，第二占空中心值偏移到低于输出中心值的第二状态。 这可以减少FET之间的热损失差异，同时减小电容器的纹波电流。

公开(公告)号：US07792619B2

公开(公告)日：2010-09-07

申请号：US11052080

申请日：2005-02-08

申请人： Nobuhiko Uryu

发明人： Nobuhiko Uryu

IPC分类号： B60L9/00 ,  B62D6/00 ,  B62D5/06

CPC分类号： B62D5/0484 ,  B62D5/046

摘要： An electrically driven power steering system for a vehicle comprises a steering sensor for detecting a steering operation of a steering wheel and a power steering control unit, which receives a command signal from a vehicle movement total control unit, calculates a target steering assist torque from a steering signal from the steering sensor and the command signal and drives a steering assist electric motor in accordance with the above calculated target steering assist torque. The power steering control unit further calculates a feasible torque to be generated at the steering assist electric motor, and drives the steering assist electric motor at the feasible torque, when the feasible torque is lower than the target steering assist torque, namely when a driving current to the electric motor should be limited due to an increased temperature of the electric motor and so on.

摘要翻译： 用于车辆的电驱动动力转向系统包括用于检测方向盘的转向操作的转向传感器和从车辆移动总控制单元接收命令信号的动力转向控制单元，从一个车辆运动总控制单元计算目标转向辅助转矩 来自转向传感器的转向信号和指令信号，并根据上述计算的目标转向辅助转矩驱动转向辅助电动机。 动力转向控制单元进一步计算在转向辅助电动机上产生的可行转矩，并且当可行转矩低于目标转向辅助转矩时，即当驱动电流 由于电动机的温度升高等原因，对电动机的限制。