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公开(公告)号：US20210016827A1
公开(公告)日：2021-01-21
申请号：US16931330
申请日：2020-07-16
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI
Abstract: In a steering control apparatus, a reaction force torque command value is calculated so that a detection value of a torque sensor follows a target value obtained by adding at least a viscosity command value and a return command value to a steering torque command value, and an electric current that flows to a reaction force rotary electric machine is controlled based on the reaction force torque command value. Whether a steering state is a turning state or a returning state is determined by comparing a physical quantity corresponding to an output torque of a reaction force device and the detection value of the torque sensor. Characteristics of one or more of a reaction force amount operation, a viscosity amount operation, and a return amount operation are made differ between the turning state and the returning state.
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公开(公告)号：US20200083833A1
公开(公告)日：2020-03-12
申请号：US16560036
申请日：2019-09-04
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Hiroyasu OTAKE
Abstract: A control device is provided for a three-phase rotary machine including two three-phase-winding sets. The control device includes two power converters for outputting alternating currents with a same amplitude and a phase difference of (30±60×n) degrees to the two three-phase-winding sets and a control unit for controlling energization of the three-phase rotary machine by calculating a d-axis current and a q-axis current of a 6(2k+1)th component to be superimposed on a fundamental wave component on dq coordinates so as to reduce a phase current peak value. The control unit calculates currents so that a high-order dq amplitude ratio is 0 when a fundamental wave current amplitude is a first threshold or less, and the high-order dq amplitude ratio is 1 when the fundamental wave current amplitude is larger than a second threshold.
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公开(公告)号：US20200079423A1
公开(公告)日：2020-03-12
申请号：US16560074
申请日：2019-09-04
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI
Abstract: A steering controller sets a steer angle ratio to a high value in a high angle ratio mode that is high relative to a reference value in a normal mode. A control section controls operation of a reaction force motor and a tire turning motor based on a steer angle ratio mode input to a switch. The control section controls an output of the reaction force motor provided for a driver based on (i) a “reaction force amount” based on road surface information calculated from output of the tire turning motor and (ii) a “viscosity compensation amount” negatively correlated with a steering speed of a steering device.
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公开(公告)号：US20200059167A1
公开(公告)日：2020-02-20
申请号：US16662413
申请日：2019-10-24
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI
IPC: H02M7/5387 , H02P27/08 , H02M1/08 , B62D5/04
Abstract: A power converter includes: an inverter that includes an upper arm element and a lower arm element, and converts electric power supplied from a DC power source via a power wiring so as to supply the electric power to a load; a driver that receives electric power supplied from the DC power source via a control wiring, and applies gate voltage to the upper arm element and the lower arm element; and a controller that includes a drive controller controlling operation of the upper arm element and the lower arm element in accordance with a current command value.
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5.发明申请公开(公告)号：US20190006979A1
公开(公告)日：2019-01-03
申请号：US16021563
申请日：2018-06-28
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Daisuke KOBAYASHI , Masaya TAKI
IPC: H02P29/024 , H02P27/12 , H02P21/22 , B62D5/04
Abstract: A current sensor state determination device determines that an abnormality is caused in a current sensor when a sum of phase currents based on current detection values from each of the current sensors in three phases is greater than a first determination value, and determines that no abnormality is caused in the current sensor when the sum of phase currents is equal to or less than the first determination value. The state determination device determines that the current sensor is normal when it is determined that (i) no abnormality is caused in a preset electric angle range equal to or less than one electric-angle cycle of the rotating electric machine and (ii) a value of an electric current flowing in the rotating electric machine in a rotating coordinates system calculated based on the current detection value is equal to or greater than a second determination value.
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Patent Agency Ranking
公开(公告)号：US20140091744A1
公开(公告)日：2014-04-03
申请号：US14039262
申请日：2013-09-27
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Hirofumi KAKO , Takeshi ITOH
IPC: H02P6/12
CPC classification number: H02P6/12 , B60L3/0038 , B60L3/0061 , B60L3/04 , B60L7/14 , B60L11/005 , B60L11/14 , B60L15/025 , B60L15/2009 , B60L2210/40 , B60L2220/14 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2250/24 , B60L2250/26 , H02P21/14 , H02P21/22 , H02P2205/01 , Y02T10/643 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
Abstract: A control device for a three-phase alternate current motor includes: a control phase current acquisition means; a monitor phase current acquisition means; a rotation angle acquisition means; a two-phase control current value calculation means; a one-phase current estimated value estimation means; a voltage command value calculation means; an other phase current estimation means for calculating a monitor or a control phase current estimated value; an abnormality detection means for detecting an abnormality in a monitor phase or a control phase current sensor; a number-of-revolutions calculation means for the motor; a number-of-revolutions determination means for determining whether the number of revolutions is not larger than a predetermined determination value; and a switching means between a two-phase control mode when the number of revolutions is not larger than the determination value and a one-phase control mode when the number of revolutions is larger than the determination value.
Abstract translation: 一种用于三相交流电动机的控制装置包括：控制相电流获取装置; 监视相电流获取装置; 旋转角度获取装置; 两相控制电流值计算装置; 一相电流估计值估计装置; 电压指令值计算装置; 用于计算监视器或控制相位电流估计值的另一相电流估计装置; 用于检测监视阶段的异常或控制相电流传感器的异常检测装置; 用于电动机的转数计算装置; 用于确定所述转数是否不大于预定确定值的转数确定装置; 以及当所述转数不大于所述确定值时的两相控制模式之间的转换装置和当所述转数大于所述确定值时的单相控制模式。
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公开(公告)号：US20130278187A1
公开(公告)日：2013-10-24
申请号：US13867392
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Takeshi ITOH , Hirofumi KAKO
IPC: H02P21/14
CPC classification number: H02P21/14
Abstract: A control apparatus includes an electric current estimation unit to improve a responsiveness of an AC motor. The electric current estimation unit performs, at predetermined intervals, a dq conversion, a correction process, and an inverted dq conversion. The dq conversion calculates d/q axis electric current estimate values based on a detection value of a sensor phase from a sensor, and on an electric current estimate values of two phases of the AC motor other than the sensor phase from a previous cycle. The correction process corrects, during the dq conversion, the d/q axis electric current estimate values in an orthogonal direction that is orthogonal to a sensor phase axis. The inverted dq conversion calculates the electric current estimate values of the two phases other than the sensor phase based on the d/q axis electric current estimate values corrected by the correction process and smoothed by a low-pass filter process.
Abstract translation: 控制装置包括用于提高AC电动机的响应性的电流估计单元。 电流估计单元以预定间隔执行dq转换，校正处理和反向dq转换。 dq转换基于来自传感器的传感器相位的检测值以及来自前一周期的传感器相位以外的AC电动机的两相电流估计值来计算d / q轴电流估计值。 校正处理在dq转换期间校正与传感器相位轴正交的正交方向上的d / q轴电流估计值。 反向dq转换基于由校正处理校正并通过低通滤波处理平滑的d / q轴电流估计值，计算除了传感器相位之外的两相的电流估计值。
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公开(公告)号：US20130278184A1
公开(公告)日：2013-10-24
申请号：US13867282
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Takeshi ITOH , Hirofumi KAKO
IPC: H02P21/14
CPC classification number: H02P21/14
Abstract: A control apparatus of an AC motor improves an electric current estimation accuracy of the AC motor. The control apparatus includes an electric current estimation unit that repeatedly performs an inverted dq conversion, a dq conversion, and a correction process. Based on a d/q axis electric current estimate values of a previous cycle, the inverted dq conversion calculates an electric current estimate value of a sensor phase. The dq conversion calculates a d/q axis electric current correction values based on an electric current estimation error of the sensor phase, which is derived from the electric current estimate value and the electric current detection value detected by an electric current detector. The correction process calculates the d/q axis electric current estimate values of a current cycle by correcting the d/q axis electric current estimate values of the previous cycle by using the d/q axis electric current correction values.
Abstract translation: 交流电动机的控制装置提高交流电动机的电流推定精度。 控制装置包括重复执行反向dq转换，dq转换和校正处理的电流估计单元。 基于前一周期的d / q轴电流估计值，反向dq转换计算传感器相的电流估计值。 dq转换根据从电流估计值和由电流检测器检测的电流检测值导出的传感器相位的电流估计误差来计算d / q轴电流校正值。 校正处理通过使用d / q轴电流校正值来校正前一周期的d / q轴电流估计值来计算当前周期的d / q轴电流估计值。
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公开(公告)号：US20200070833A1
公开(公告)日：2020-03-05
申请号：US16545633
申请日：2019-08-20
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI
IPC: B60W30/18 , B60W10/184 , B60W10/20 , B62D5/04 , B60T8/17
Abstract: A turning control device is provided for use in a vehicle control system including a steer-by-wire system and a brake system. The turning control device is configured to calculate a braking force difference, which is a difference in braking force between the left and right tire wheels. The turning control device is further configured to perform a high turning control that provides the braking force difference to the left and right tire wheels to cause a smaller turning radius of the vehicle when a steering angle corresponding value is larger than a judgment threshold.
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公开(公告)号：US20190210637A1
公开(公告)日：2019-07-11
申请号：US16243488
申请日：2019-01-09
Applicant: DENSO CORPORATION
Inventor： Hiroyasu OTAKE , Toshihiro FUJITA , Takashi SUZUKI
CPC classification number: B62D5/049 , B62D15/0235
Abstract: A microcomputer includes an abnormality monitor unit, a rotation angle calculation unit and a current supply control unit. The abnormality monitor unit monitors an abnormality of the rotation angle sensor. The rotation angle calculation unit calculates an electrical angle based on angle information acquired from the rotation angle sensor and an abnormality state of the rotation angle sensor. The current supply control unit controls current supply to the winding sets based on the electrical angle. When an abnormality is detected in one of the sensor units, the rotation angle calculation unit calculates the electrical angle based on a hold value which is the electrical angle before the detection of abnormality during a period from the detection of abnormality to a final determination of the abnormality. When the abnormality of the sensor unit is finalized, the electrical angle is calculated based on the angle information of the other sensor unit which is normal.
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