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公开(公告)号：US20240241078A1
公开(公告)日：2024-07-18
申请号：US18603999
申请日：2024-03-13
Applicant: DENSO CORPORATION
Inventor： Kazuhisa NAKAGAWA , Yuhei Shimizu , Daisuke Kobayashi , Masashi Suzuki , Akira Nukazuka , Teppei Sakai , Kei Hayakawa , Kazuhiko Kano , Mana Asano
IPC: G01N27/414 , G01N27/30
CPC classification number: G01N27/4141 , G01N27/301
Abstract: An ion sensor includes an ion detection element, a reference electrode that provides a reference point of a potential, and a solution in which an ion concentration can be changed in a sensing area of the ion detection element. The sensing area of the ion detection element is disposed in the solution. A method for detecting a target substance employs an ion sensor. The target substance bound to a label having a function of changing the amount of ions detectable by the ion sensor is introduced into the solution, and a change in the amount of ions is detected using the ion sensor.
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2.发明公开公开(公告)号：US20240103080A1
公开(公告)日：2024-03-28
申请号：US18523731
申请日：2023-11-29
Applicant: DENSO CORPORATION
Inventor： Tsuyoshi Tashima , Daisuke Kobayashi , Masaya Taki , Ryo Kano , Hisashi Kameya
IPC: G01R31/327 , B62D5/04 , G01R19/165
CPC classification number: G01R31/327 , B62D5/0481 , G01R19/16576
Abstract: A malfunction detection method detects a malfunction in an electronic control device. The electronic control device includes a normal power supply terminal connected to a normal power supply mounted on a vehicle, a starting power supply terminal connected to a starting power supply, a controller activated by supply of a normal voltage, and a wake-up circuit having a wake-up switch to open and close a power supply path from the normal power supply terminal to the controller. The wake-up circuit turns on the wake-up switch when a starting voltage input to the starting power supply terminal is equal to or greater than an ON threshold. The malfunction detection method includes determining by the controller that the wake-up switch has an ON sticking malfunction when the normal voltage is equal to or greater than a threshold and the starting voltage is less than the ON threshold.
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公开(公告)号：US11251740B2
公开(公告)日：2022-02-15
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 , B62D5/04 , H02P21/22 , H02P25/22
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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公开(公告)号：US20170104439A1
公开(公告)日：2017-04-13
申请号：US15273476
申请日：2016-09-22
Applicant: DENSO CORPORATION
Inventor： Daisuke Kobayashi , Takashi Suzuki
CPC classification number: H02P29/68 , H02M2001/327 , H02P6/14 , H02P27/06 , H02P29/032
Abstract: A motor control device includes: a substrate on a heat sink; switching elements providing a power converter; a drive circuit IC having a pre-driver; a control circuit IC having a current control unit; first and second temperature detectors; and a temperature estimation unit of evaluation places. When the current control unit is halted after operation and is restarted after halt, the temperature estimation unit: stores estimated temperature and the first and second detected temperature at the halt; calculates, as an estimated gain, a ratio of a temperature difference at the halt to a temperature difference at restart; and estimates temperature at the restart based on a temperature difference obtained by multiplying a temperature difference between the first detected temperature and the estimated temperature at the halt by the estimated gain, and increased temperature.
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公开(公告)号：US20160079900A1
公开(公告)日：2016-03-17
申请号：US14854575
申请日：2015-09-15
Applicant: DENSO CORPORATION
Inventor： Yosuke Ogi , Daisuke Kobayashi
IPC: H02P21/00
Abstract: A motor control device for controlling a multiphase brushless motor in a vector control manner includes: a current command value generation unit that generates q-axis and d-axis current command values; a controller that calculates q-axis and d-axis voltage command values; a saturation guard unit that corrects the q-axis or d-axis voltage command value to set a magnitude of a voltage vector of the q-axis or d-axis voltage command value to be equal to or smaller than a predetermined voltage guard value; and a current command value limiting unit that limits the q-axis or d-axis current command value using a current limit gain and a current guard value, which are calculated based on a voltage saturation amount as the magnitude of the voltage vector of the q-axis or d-axis voltage command value corrected by the saturation guard unit.
Abstract translation: 用于以矢量控制方式控制多相无刷电动机的电动机控制装置包括：电流指令值生成单元，其产生q轴和d轴电流指令值; 计算q轴和d轴电压指令值的控制器; 饱和保护单元，其校正q轴或d轴电压指令值，以将q轴或d轴电压指令值的电压矢量的大小设置为等于或小于预定电压保护值; 以及电流指令值限制单元，其使用电流限制增益和当前保护值来限制q轴或d轴电流指令值，所述电流限制增益和当前保护值是基于电压饱和量计算的，所述电压饱和量作为q的电压矢量的大小 轴或d轴电压指令值由饱和保护单元校正。
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Patent Agency Ranking
6.发明授权Rotary electric machine control apparatus having abnormality detection function 有权具有异常检测功能的旋转电机控制装置公开(公告)号：US09227658B2
公开(公告)日：2016-01-05
申请号：US14306513
申请日：2014-06-17
Applicant: DENSO CORPORATION
Inventor： Hiroyasu Ootake , Daisuke Kobayashi
CPC classification number: B62D5/0487 , B62D5/0481 , B62D5/049
Abstract: A rotary electric machine control apparatus controls driving of a motor, which generates assist torque in accordance with steering torque inputted by steering operation on a steering wheel. An abnormality detection part acquires a voltage detection value related to an operation parameter, which varies when the motor is being supplied with electric power. The abnormality detection part checks whether the voltage detection value is abnormal based on a variation of the voltage detection value over a predetermined period under a condition that the electric power is supplied to the motor and the steering member is being operated. It is thus possible to determine abnormality of the voltage detection value related to the operation parameter, which varies when the motor is in operation with electric power supply, without erroneous detection.
Abstract translation: 旋转电机控制装置控制电动机的驱动，该电动机根据在方向盘上的转向操作输入的转向转矩产生辅助转矩。 异常检测部获取与电动机供给电力时的操作参数相关的电压检测值，该操作参数发生变化。 异常检测部在电力供给到电动机并且转向构件正在运转的条件下，基于电压检测值在规定期间的变化来检查电压检测值是否异常。 因此，可以确定与电动机在电力供给中运转时的操作参数有关的电压检测值的异常，而不会错误地检测。
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公开(公告)号：US11807316B2
公开(公告)日：2023-11-07
申请号：US16559946
申请日：2019-09-04
Applicant: DENSO CORPORATION
Inventor： Ryo Kano , Daisuke Kobayashi , Takashi Suzuki
CPC classification number: B62D5/0484 , B62D1/20 , B62D3/126 , B62D5/0412 , B62D5/0463 , B62D15/0235
Abstract: A power steering apparatus has a first actuator provided as a multi-phase rotating electric machine and disposed on a steering column side of an intermediate shaft and a second actuator disposed on a rack gear side thereof. A first ECU controls a drive of the first actuator and detects an abnormality of the first actuator. The first ECU changes an output of the first actuator based on a notification from a communication bus. The first ECU performs an initial diagnosis of the first actuator at a vehicle startup time for detecting abnormality, by supplying an electric power to the first actuator for not providing a torque to a steering wheel.
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公开(公告)号：US09473058B2
公开(公告)日：2016-10-18
申请号：US14854575
申请日：2015-09-15
Applicant: DENSO CORPORATION
Inventor： Yosuke Ogi , Daisuke Kobayashi
Abstract: A motor control device for controlling a multiphase brushless motor in a vector control manner includes: a current command value generation unit that generates q-axis and d-axis current command values; a controller that calculates q-axis and d-axis voltage command values; a saturation guard unit that corrects the q-axis or d-axis voltage command value to set a magnitude of a voltage vector of the q-axis or d-axis voltage command value to be equal to or smaller than a predetermined voltage guard value; and a current command value limiting unit that limits the q-axis or d-axis current command value using a current limit gain and a current guard value, which are calculated based on a voltage saturation amount as the magnitude of the voltage vector of the q-axis or d-axis voltage command value corrected by the saturation guard unit.
Abstract translation: 用于以矢量控制方式控制多相无刷电动机的电动机控制装置包括：电流指令值生成单元，其产生q轴和d轴电流指令值; 计算q轴和d轴电压指令值的控制器; 饱和保护单元，其校正q轴或d轴电压指令值，以将q轴或d轴电压指令值的电压矢量的大小设置为等于或小于预定电压保护值; 以及电流指令值限制单元，其使用电流限制增益和当前保护值来限制q轴或d轴电流指令值，所述电流限制增益和当前保护值是基于电压饱和量计算的，所述电压饱和量作为q的电压矢量的大小 轴或d轴电压指令值由饱和保护单元校正。
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公开(公告)号：US11616466B2
公开(公告)日：2023-03-28
申请号：US17221360
申请日：2021-04-02
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Daisuke Kobayashi , Masaya Taki
IPC: H02P29/024 , H02P27/12 , B62D5/04 , H02P21/22 , H02P25/22
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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公开(公告)号：US09912282B2
公开(公告)日：2018-03-06
申请号：US15273476
申请日：2016-09-22
Applicant: DENSO CORPORATION
Inventor： Daisuke Kobayashi , Takashi Suzuki
CPC classification number: H02P29/68 , H02M2001/327 , H02P6/14 , H02P27/06 , H02P29/032
Abstract: A motor control device includes: a substrate on a heat sink; switching elements providing a power converter; a drive circuit IC having a pre-driver; a control circuit IC having a current control unit; first and second temperature detectors; and a temperature estimation unit of evaluation places. When the current control unit is halted after operation and is restarted after halt, the temperature estimation unit: stores estimated temperature and the first and second detected temperature at the halt; calculates, as an estimated gain, a ratio of a temperature difference at the halt to a temperature difference at restart; and estimates temperature at the restart based on a temperature difference obtained by multiplying a temperature difference between the first detected temperature and the estimated temperature at the halt by the estimated gain, and increased temperature.
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