公开(公告)号：EP3480080A1

公开(公告)日：2019-05-08

申请号：EP18204498.2

申请日：2018-11-06

申请人： JTEKT CORPORATION

发明人： ITAMOTO, Hidenori ,  KAGEYAMA, Takashi ,  HIBI, Toshie ,  TOMITA, Akihiro

IPC分类号： B62D5/04 ,  B62D15/02

摘要： Provided is a steering control apparatus capable of executing driving assistance control even during execution of rotation angle sensor-less control. When an induced voltage generated in a motor is equal to or lower than a threshold voltage at an early stage from the start of execution of the rotation angle sensor-less control and when the driving assistance control is executed based on a command value (S*) from a higher-level control apparatus, a second pre-addition angle (β2) that is based on the command value (S*) is used as a second addition angle (Δθm2) in place of a first pre-addition angle (β1) that is based on a steering torque (Trq). Therefore, even in a situation in which the steering torque (Trq) is not detected due to, for example, execution of driving assistance, an estimated electrical angle of the motor is calculated by integrating the second addition angle (Δθm2). Then, driving of the motor is controlled based on the calculated estimated electrical angle.

公开(公告)号：EP3495235B1

公开(公告)日：2020-06-03

申请号：EP18207571.3

申请日：2018-11-21

申请人： JTEKT CORPORATION

发明人： ITAMOTO, Hidenori ,  KAGEYAMA, Takashi ,  HIBI, Toshie ,  TOMITA, Akihiro

IPC分类号： B62D5/04

公开(公告)号：EP3492346A1

公开(公告)日：2019-06-05

申请号：EP18207566.3

申请日：2018-11-21

申请人： JTEKT CORPORATION

发明人： ITAMOTO, Hidenori ,  KAGEYAMA, Takashi ,  HIBI, Toshie ,  TOMITA, Akihiro

IPC分类号： B62D5/04

摘要： A steering control unit includes a microcomputer (51) that performs sensorless control of driving of a motor by using an estimated electrical angle (θmb) estimated by calculation. The microcomputer (51) has a first estimation calculation state and a second estimation calculation state. In the first estimation calculation state, the microcomputer (51) calculates the estimated electrical angle (θmb) from a value obtained by accumulating a first additional angle (Δθm1) calculated by a first additional angle calculation circuit (80) on the basis of a voltage (E) induced in the motor. In the second estimation calculation state, the microcomputer (51) calculates the estimated electrical angle (θmb) from a value obtained by accumulating a second additional angle (Aθm2) calculated by a second additional angle calculation circuit (81) that performs torque feedback control that causes steering torque (Trq) to follow a target torque value (Trq*). In a low steering velocity state, the microcomputer (51) calculates the estimated electrical angle (θmb) in the second estimation calculation state.

公开(公告)号：EP3495235A1

公开(公告)日：2019-06-12

申请号：EP18207571.3

申请日：2018-11-21

申请人： JTEKT CORPORATION

发明人： ITAMOTO, Hidenori ,  KAGEYAMA, Takashi ,  HIBI, Toshie ,  TOMITA, Akihiro

IPC分类号： B62D5/04

摘要： Provided is a steering control unit for improving influence of fluctuations in an estimated electrical angle on steering feel. A steering control unit includes a microcomputer (51) that performs sensorless control of the driving of a motor by using an estimated electrical angle (θmb) estimated by calculation. The microcomputer (51) calculates the estimated electrical angle (θmb) from a value that is obtained by selectively accumulating a first additional angle (Δθm1) or a second additional angle (Δθm2). The microcomputer (51) adjusts a vibration component of fluctuations in the estimated electrical angle (θmb) by varying the amount of change in the first additional angle (Δθm1) and the second additional angle (Δθm2).

公开(公告)号：EP2210795B1

公开(公告)日：2014-04-09

申请号：EP10151179.8

申请日：2010-01-20

申请人： JTEKT CORPORATION

发明人： TOMITA, Akihiro ,  SAKAI, Atsuo ,  MIKAMO, Satoru

IPC分类号： B62D5/04 ,  G01B21/22

CPC分类号： B62D5/046 ,  H02P21/06 ,  H02P21/18 ,  H02P2205/05

公开(公告)号：EP2731257A1

公开(公告)日：2014-05-14

申请号：EP12808189.0

申请日：2012-07-02

申请人： JTEKT Corporation

发明人： TOMITA, Akihiro ,  MIKAMO, Satoru ,  KAWAMURA, Hiroshi ,  TAKAHASHI, Toshihiro ,  HASEGAWA, Jun ,  NAMBU, Akira ,  AOKI, Kenichiro ,  KASAI, Eiji

IPC分类号： H02P6/12 ,  B62D5/04 ,  B62D6/00 ,  H02P27/06 ,  B62D101/00 ,  B62D109/00 ,  B62D119/00

CPC分类号： H02P6/12 ,  B62D5/0487 ,  G01R31/026 ,  G01R31/327 ,  H02P29/0241 ,  H02P29/0243

摘要： In a state in which the energization in the first direction is possible between the motor (21) and the drive circuit (32) and the motor (21) is not rotating at high speed, when the phase induced voltage value of the specific phase that is the target of determination is continuously equal to or smaller than the abnormality determination threshold, the abnormality detecting unit (71) determines that an open malfunction has occurred in the relay FET of the specific phase.

摘要翻译： 在电动机（21）与驱动电路（32）之间可能在第一方向上通电且电动机（21）不以高速旋转的状态下，当特定相位的相位感应电压值为 所述异常检测部（71）判断为所述特定相的继电器FET中发生了开路故障，所述判定对象是所述异常判定阈值以下。

公开(公告)号：EP2210795A1

公开(公告)日：2010-07-28

申请号：EP10151179.8

申请日：2010-01-20

申请人： JTEKT CORPORATION

发明人： TOMITA, Akihiro ,  SAKAI, Atsuo ,  MIKAMO, Satoru

IPC分类号： B62D5/04 ,  G01B21/22

CPC分类号： B62D5/046 ,  H02P21/06 ,  H02P21/18 ,  H02P2205/05

摘要： A rotational angle sensor used in an electric power steering apparatus detects a rotational angle of a motor shaft at a portion on a steering system side, as a motor rotational angle (θm). A MPU sets a base correction amount (Δθ'm) based on a q-axis actual current value (Iq). The MPU sets a rotational angle correction amount (Δθm) used to correct the motor rotational angle (θm) by decreasing the base correction amount (Δθ'm) as a rotational angular speed (ω) increases and by increasing the base correction amount (Δθ'm) as a torque differential value (dT/dt) increases.

摘要翻译： 用于电动动力转向装置的旋转角度传感器检测转向系统侧的电动机轴的旋转角度作为电动机旋转角度（θm）。 MPU基于q轴实际电流值（Iq）设定基础校正量（Δθ'm）。 MPU通过随着旋转角速度（ω）增加而减小基本校正量（Δθ'm）并且通过增加基本校正量（Δθm）来设置用于校正马达旋转角度（θm）的旋转角度校正量（Δθm） 'm）随着转矩差值（dT / dt）的增加而增加。