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1. 发明授权

US08816630B2 Electric power steering system 有权
公开(公告)号：US08816630B2
公开(公告)日：2014-08-26
申请号：US13364453
申请日：2012-02-02
申请人： Kozo Niimi , Yuji Kariatsumari
发明人： Kozo Niimi , Yuji Kariatsumari
IPC分类号： H02P23/00 , H02P21/00 , H02P7/00 , B62D5/04
摘要： An electric power steering system calculates a motor resistance Rm using a resistance map, and calculates an estimated inducted voltage based on a motor current and a motor voltage. If the estimated induced voltage is determined as being equal to or smaller than a determination value that is set in accordance with the current level, the electric power steering system calculates a motor resistance (estimated motor resistance Rma) and updates the resistance map based on the estimated motor resistance Rma.

2. 发明申请

US20120299517A1 ELECTRIC POWER STEERING SYSTEM 有权
标题翻译：电力转向系统
公开(公告)号：US20120299517A1
公开(公告)日：2012-11-29
申请号：US13476398
申请日：2012-05-21
申请人： Kozo NIIMI , Yuji KARIATSUMARI
发明人： Kozo NIIMI , Yuji KARIATSUMARI
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0481
摘要： In an electric power steering system, a back electromotive force constant is calculated on the basis of a steering angular velocity and an estimated induced voltage. Then, a rotation angular velocity of a motor is calculated as an estimated rotation angular velocity on the basis of a motor current, a motor voltage, the back electromotive force constant and a motor resistance.
摘要翻译：在电动助力转向系统中，基于转向角速度和估计的感应电压来计算反电动势常数。然后，基于电动机电流，电动机电压，反电动势常数和电动机电阻，计算电动机的旋转角速度作为估计旋转角速度。

3. 发明申请

US20110118940A1 MOTOR CONTROL UNIT AND VEHICLE STEERING SYSTEM 有权
标题翻译：电机控制单元和车辆转向系统
公开(公告)号：US20110118940A1
公开(公告)日：2011-05-19
申请号：US12946187
申请日：2010-11-15
申请人： Yuji KARIATSUMARI , Hayato KOMATSU , Terutaka TAMAIZUMI , Yoshihiro ITATSU
发明人： Yuji KARIATSUMARI , Hayato KOMATSU , Terutaka TAMAIZUMI , Yoshihiro ITATSU
IPC分类号： B62D6/00 , H02P21/00
CPC分类号： H02P21/0046 , B62D5/046 , H02P21/04 , H02P21/28
摘要： A motor is driven by the γ-axis current of a γδ coordinate system that is an imaginary rotating coordinate system. A command current value preparation unit sets the γ-axis command current value based on the command steering torque and the detected steering torque. The command current value preparation unit includes a command current increase/decrease amount calculation unit and an addition unit. The command current increase/decrease amount calculation unit calculates the current increase/decrease amount for the command current value based on the sign of the command steering torque and the deviation of the detected steering torque from the command steering torque. The current increase/decrease amount calculated by the command current increase/decrease amount calculation unit is added to the immediately preceding value of the command current value by the addition unit. Thus, the command current value in the present calculation cycle is calculated.
摘要翻译：电动机由作为虚拟旋转坐标系的γδ坐标系的γ轴电流驱动。指令电流值准备部基于指示转向转矩和检测到的转向转矩来设定γ轴指令电流值。指令电流值准备单元包括指令电流增减量计算单元和加法单元。指令电流增减量计算单元基于指示转向转矩的符号和检测到的转向转矩与指示转向转矩的偏差来计算指令电流值的当前增减量。由指令电流上升/下降量计算单元计算出的当前增加/减少量通过加法单元加到指令当前值的紧前面的值。因此，计算当前计算周期中的指令当前值。

4. 发明申请

US20110018487A1 MOTOR CONTROL DEVICE 有权
标题翻译：电机控制装置
公开(公告)号：US20110018487A1
公开(公告)日：2011-01-27
申请号：US12736320
申请日：2009-02-18
申请人： Shigeki Nagase , Takeshi Ueda , Yuji Kariatsumari , Hiroshi Sumasu
发明人： Shigeki Nagase , Takeshi Ueda , Yuji Kariatsumari , Hiroshi Sumasu
IPC分类号： H02P27/00
CPC分类号： B62D5/0463 , H02P21/16 , H02P21/18
摘要： A motor control device of the present invention includes: target electric current value setting units (15 and 16) that set target electric current values that should be supplied to a motor (1), basic voltage value computing units (511, 521, 51a, and 52a) that compute basic voltage values for driving the motor, a rotation angle speed computing unit (23) that computes a rotation angle speed of the motor, correction value computing units (50, 512, 515, 516, 522, 525, and 526) that compute correction values for correcting the basic voltage values based on motor electric current values and a rotation angle speed of the motor, correcting units (513 and 523) that obtain voltage command values by correcting the basic voltage values by the correction values computed by the correction value computing units, and a driving unit (13) that drives the motor by using voltage command values. The correction value computing units include correction value smoothing units (50, 515, 516, 525, and 526) for obtaining smoothed correction values.
摘要翻译：本发明的电动机控制装置包括：设置应提供给电动机（1）的目标电流值的目标电流值设定单元（15和16），基本电压值计算单元（511,521,51a，计算用于驱动马达的基本电压值的计算单元，计算马达的旋转角速度的旋转角速度计算单元，校正值运算单元，50,512,515,516,522,525和 526），其基于电动机电流值和电动机的旋转角速度来计算用于校正基本电压值的校正值，校正单元（513和523），其通过校正基本电压值来校正电压指令值，所述校正单元计算出校正值以及通过使用电压指令值来驱动电动机的驱动单元（13）。校正值计算单元包括用于获得平滑校正值的校正值平滑单元（50,515,516,525和526）。

5. 发明授权

US07512468B2 Electric power steering apparatus 有权
标题翻译：电动助力转向装置
公开(公告)号：US07512468B2
公开(公告)日：2009-03-31
申请号：US11255223
申请日：2005-10-19
申请人： Terutaka Tamaizumi , Yuji Kariatsumari
发明人： Terutaka Tamaizumi , Yuji Kariatsumari
IPC分类号： B62D1/00 , B62D6/00 , B62D5/00
CPC分类号： B62D15/0245 , B62D5/0463
摘要： In an electric power steering apparatus which comprises a motor for generating steering assist force, it is judged whether or not the vehicle is in a state of straight forward motion. A mean reference steering angle is determined by dividing total of relative steering angles which are determined when the vehicle is judged to be in a state of straight forward motion by the number of judgments that the vehicle is in a state of straight forward motion. A steering angle is determined by subtracting a steering angle midpoint from a relative steering angle with taking the mean reference steering angle as the steering angle midpoint. The output of the motor for generating steering assist force is corrected in accordance with an output correction value determined on the basis of the determined steering angle. This output correction value is altered so as to have a positive correlation with the number of judgments that the vehicle is in a state of straight forward motion.
摘要翻译：在包括用于产生转向辅助力的电动机的电动助力转向装置中，判断车辆是否处于直线向前运动的状态。平均参考转向角通过将车辆被判断为处于直线向前运动状态时确定的相对转向角的总和除以车辆处于直线运动的状态的判断次数来确定。通过以平均参考舵角作为转向角中点，从相对转向角减去转向角中点来确定转向角。根据所确定的转向角确定的输出校正值来校正用于产生转向辅助力的电动机的输出。该输出校正值被改变，以便与车辆处于直线向前运动的状态的判断次数呈正相关。

6. 发明授权

US06305489B1 Power steering apparatus 有权
标题翻译：动力转向装置
公开(公告)号：US06305489B1
公开(公告)日：2001-10-23
申请号：US09431186
申请日：1999-11-01
申请人： Yuji Kariatsumari
发明人： Yuji Kariatsumari
IPC分类号： B62D506
CPC分类号： B62D5/065 , B62D6/02
摘要： A power steering apparatus senses a fore-and-aft acceleration of a vehicle which is expressed as a value prefixed with a sign, and a rotation speed Ri of an electric motor is reduced to reduce an assist force in accordance with the acceleration if the value of the sensed vehicle acceleration is positive, and increased to increase the assist force in accordance with the acceleration if the value of the sensed vehicle acceleration is negative (FIG. 4). With this control operation, a consistent steering feeling can be provided even at acceleration or deceleration of the vehicle.
摘要翻译：动力转向装置感测车辆的前后加速度，其被表示为以符号表示的值，并且电动机的转速Ri减小以根据加速度减小辅助力，如果值的感测车辆加速度为正，并且如果感测到的车辆加速度的值为负，则增加以根据加速度增加辅助力（图4）。通过该控制操作，即使在车辆的加速或减速下也能够提供一致的转向感。

7. 发明授权

US6158545A Power steering apparatus 有权
标题翻译：动力转向装置
公开(公告)号：US6158545A
公开(公告)日：2000-12-12
申请号：US431188
申请日：1999-11-01
申请人： Hiroaki Kaji , Yuji Kariatsumari
发明人： Hiroaki Kaji , Yuji Kariatsumari
IPC分类号： B62D6/00 , B62D5/06 , B62D5/065 , B62D5/07 , B62D107/00 , B62D119/00 , B62D5/99
CPC分类号： B62D5/065
摘要： In a power steering apparatus according to the present invention, a threshold ITH of a motor electric current for actuation of an oil pump is set at a lower level when a working oil has a high viscosity resistance at a low oil temperature, so that the oil pump can be actuated at an earlier stage. Conversely, when the working oil has a low viscosity resistance at a high oil temperature, the threshold ITH of the motor electric current for the actuation of the oil pump is set at a higher level because there is no need to actuate the oil pump at the earlier stage. Thus, the electric motor can be actuated without any problem even at an extremely low temperature, so that an entrapped feeling can promptly be mitigated.
摘要翻译：在根据本发明的动力转向装置中，当工作油在低油温下具有高粘度阻力时，用于驱动油泵的电动机电流的阈值ITH被设定在较低水平，使得油泵可以在较早阶段启动。相反，当工作油在高油温下具有低粘度阻力时，用于驱动油泵的电动机电流的阈值ITH被设定在更高的水平，因为不需要在油泵处致动油泵早期阶段因此，即使在极低的温度下电动机也可以无任何问题地被致动，从而能够迅速地减轻被捕获的感觉。

8. 发明授权

US09518844B2 Rotation angle detection device compromising 有权
标题翻译：旋转角度检测装置妥协
公开(公告)号：US09518844B2
公开(公告)日：2016-12-13
申请号：US13639294
申请日：2011-03-25
申请人： Takeshi Ueda , Hayato Komatsu , Yuji Kariatsumari
发明人： Takeshi Ueda , Hayato Komatsu , Yuji Kariatsumari
IPC分类号： G01D5/245 , G01D5/244
CPC分类号： G01D5/2451 , G01D5/2449
摘要： Angular widths of respective magnetic poles of a detection rotor are stored and divisions are set for respective magnetic pole pairs. Based on output signals from first and second magnetic sensors, a rotation angle computation unit computes first and second rotation angles that are rotation angles within the corresponding division. Based on the angular widths, the rotation angle computation unit identifies the magnetic pole sensed by the first magnetic sensor and computes a first absolute rotation angle using the first rotation angle. Based on the identified magnetic pole and the second rotation angle, the rotation angle computation unit computes a second absolute rotation angle. The rotation angle of the detection rotor is computed based on the first and second absolute angles.
摘要翻译：存储检测转子的各个磁极的角度宽度，并为相应的磁极对设定分割。基于来自第一和第二磁传感器的输出信号，旋转角计算单元计算作为相应划分内的旋转角度的第一和第二旋转角度。基于角度宽度，旋转角度计算单元识别由第一磁性传感器感测的磁极，并使用第一旋转角度来计算第一绝对旋转角度。基于所识别的磁极和第二旋转角度，旋转角度计算单元计算第二绝对旋转角度。基于第一和第二绝对角度来计算检测转子的旋转角度。

9. 发明授权

US08901874B2 Electric power steering system 有权
标题翻译：电动助力转向系统
公开(公告)号：US08901874B2
公开(公告)日：2014-12-02
申请号：US13364453
申请日：2012-02-02
申请人： Kozo Niimi , Yuji Kariatsumari
发明人： Kozo Niimi , Yuji Kariatsumari
IPC分类号： H02P23/00 , H02P21/00 , H02P7/00 , B62D5/04
CPC分类号： B62D5/04
摘要： An electric power steering system calculates a motor resistance Rm using a resistance map, and calculates an estimated inducted voltage based on a motor current and a motor voltage. If the estimated induced voltage is determined as being equal to or smaller than a determination value that is set in accordance with the current level, the electric power steering system calculates a motor resistance (estimated motor resistance Rma) and updates the resistance map based on the estimated motor resistance Rma.
摘要翻译：电动助力转向系统使用电阻图来计算电动机电阻Rm，并且基于电动机电流和电动机电压来计算估计的感应电压。如果估计的感应电压被确定为等于或小于根据当前电平设定的确定值，则电动转向系统计算电动机电阻（估计的电动机电阻Rma），并基于估计电机电阻Rma。

10. 发明授权

US08874315B2 Motor control unit and vehicle steering system 有权
标题翻译：电机控制单元和车辆转向系统
公开(公告)号：US08874315B2
公开(公告)日：2014-10-28
申请号：US12943514
申请日：2010-11-10
申请人： Yuji Kariatsumari , Yoshihiro Itatsu , Yoshinobu Shimizu
发明人： Yuji Kariatsumari , Yoshihiro Itatsu , Yoshinobu Shimizu
IPC分类号： B62D5/04 , B62D5/14 , H02P29/00
CPC分类号： B62D5/046 , B62D5/0496 , H02P29/64
摘要： When the estimated motor temperature becomes equal to or higher than the first predetermined temperature, an addition angle correction unit temporarily decreases the absolute value of the addition angle output from an addition angle limiter at time intervals. The addition angle correction unit makes the time interval shorter as the estimated motor temperature increases. When the time interval becomes equal to or shorter than the predetermined threshold, that is, when the estimated motor temperature becomes equal to or higher than the second predetermined temperature that is higher than the first predetermined temperature, the addition angle correction unit notifies a command current value changing unit of a current stop command. Thus, the γ-axis command current value is changed to 0, and therefore the steering mode is shifted to the manual steer mode.
摘要翻译：当估计的电动机温度等于或高于第一预定温度时，相加角校正单元以时间间隔临时减小从相加角限制器输出的相加角的绝对值。相加角校正单元随着估计的电机温度升高而使时间间隔更短。当时间间隔等于或小于预定阈值时，即当估计电机温度变得等于或高于高于第一预定温度的第二预定温度时，相加角校正单元通知命令电流当前停止命令的值改变单元。因此，γ轴指令电流值变为0，因此转向模式转移到手动转向模式。

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