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公开(公告)号：US11472473B2
公开(公告)日：2022-10-18
申请号：US16857503
申请日：2020-04-24
Applicant: DENSO CORPORATION
Inventor： Koichi Nakamura , Nobuyori Nakajima , Masaya Taki
Abstract: A motor control device is provided with a plurality of power converters and a plurality of microcomputers, and controls driving of a motor that has a plurality of sets of windings. The microcomputers perform initial check of components in respective circuits after activation. The microcomputers prohibit driving of the motor by a circuit determined to be abnormal during the initial inspection. When two or more circuits are determined to be normal in the initial check, the microcomputers start driving of the motor by synchronizing the timing between the two or more circuits determined to be normal. When only one circuit is determined to be normal in the initial check, the microcomputers start driving of the motor by the one circuit determined to be normal.
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公开(公告)号：US11214304B2
公开(公告)日：2022-01-04
申请号：US16264282
申请日：2019-01-31
Applicant: DENSO CORPORATION
Inventor： Atsuko Oka , Nobuyori Nakajima , Go Endoh , Koichi Nakamura , Yosuke Ogi
IPC: H02P21/22 , B62D6/10 , H02P7/00 , H02P25/22 , B62D5/04 , B62D15/02 , H02K1/00 , H02P21/36 , H02P21/00
Abstract: Inverter circuits are provided for motor winding sets, respectively. Control units are provided for the motor winding sets to generate control signals related to driving of the inverter circuits and control currents flowing through the motor winding sets, respectively, thereby controlling driving of a motor. The control mode includes a manual steering mode for controlling the motor according to a steering operation on a steering wheel by a driver and an automatic steering mode for controlling the motor independently of the steering operation on the steering wheel by the driver. The control units are capable of switching the control modes and differentiate the current control according to the control mode. By making the current control different according to the control mode, it is possible to attain optimal characteristics which correspond to each control mode.
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公开(公告)号：US10328972B2
公开(公告)日：2019-06-25
申请号：US15479066
申请日：2017-04-04
Applicant: DENSO CORPORATION
Inventor： Toshihiro Fujita , Hideki Kabune , Katsuhiko Hayashi , Takaharu Kozawa , Shuhei Miyachi , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Shuji Kuramitsu , Toshimitsu Sakai , Masaya Taki
Abstract: In a rotation detecting apparatus, a sensor includes a sensor element outputting a measurement value representing rotation of a detection target, and a circuit module. The circuit module includes a rotational angle calculator calculating, based on the measurement value, rotational angle information indicative of a rotational angle of the detection target. The rotational angle calculator generates a rotational angle signal including the rotational angle information. The circuit module includes a rotation number calculator calculating, based on the measurement value, rotation number information representing the number of rotations of the detection target. The rotation number calculator generates a rotation number signal including the rotation number information. An output unit outputs, as an output signal, a series of the rotational angle signal and the rotation number signal. A controller obtains the output signal from the communicator, and calculates, based on the output signal, information about the rotation of the detection target.
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公开(公告)号：US20160339945A1
公开(公告)日：2016-11-24
申请号：US15158283
申请日：2016-05-18
Applicant: DENSO CORPORATION
Inventor： Takaharu Kozawa , Shuji Kuramitsu , Koichi Nakamura , Katsuhiko Hayashi , Masaya Taki , Toshimitsu Sakai
IPC: B62D5/04
CPC classification number: B62D5/049 , B62D5/0463 , G01L3/104 , G01L25/003
Abstract: A sensor device including a first output circuit generating and outputting a first output signal that is generated as a signal sequence from a first main signal based on a detection value of a first main sensor element to a first sub signal based on a detection value of a first sub sensor element, a second output circuit generating and outputting a second output signal that is generated as a signal sequence from a second main signal based on a detection value of a second main sensor element to a second sub signal based on a detection value of a second sub sensor element, and an abnormality determiner determining abnormality of the device based on the first output signal and the second output signal.
Abstract translation: 一种传感器装置，包括：第一输出电路，其基于第一主传感器元件的检测值，基于第一主传感器元件的检测值，生成并输出作为来自第一主信号的信号序列产生的第一输出信号 第一子传感器元件，第二输出电路，基于第二主传感器元件的检测值，基于第二主信号的检测值，生成并输出作为来自第二主信号的信号序列产生的第二输出信号， 第二子传感器元件和异常判定器，其基于第一输出信号和第二输出信号来确定装置的异常。
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公开(公告)号：US09112436B2
公开(公告)日：2015-08-18
申请号：US13867367
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii , Akimasa Osaki , Hideki Kabune , Koichi Nakamura
Abstract: In a system for controlling a controlled variable of a rotary machine having plural-phase input terminals of the rotary machine in which plural-phase AC power is applied from an AC power applying module to the input terminals, a command-voltage setting module sets, based on a request value for the controlled variable, plural-phase AC command voltages for the plural-phase AC power as a feedforward manipulated variable. A current obtaining module obtains plural-phase AC currents flowing in the respective plural-phase input terminals of the rotary machine. An amplitude correcting module corrects the amplitude of at least one of the plural-phase AC command voltages based on the magnitudes of the plural-phase AC currents.
Abstract translation: 在用于控制具有从交流电力施加模块向输入端施加多相交流电力的旋转机械的多相输入端子的旋转机械的控制变量的系统中，指令电压设定模块， 基于控制变量的请求值，将作为前馈操作量的多相AC电力的多相AC指令电压。 电流获取模块获得在旋转机器的各个多相输入端子中流动的多相AC电流。 振幅校正模块基于多相AC电流的大小校正多相AC指令电压中的至少一个的振幅。
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Patent Agency Ranking
公开(公告)号：US11465683B2
公开(公告)日：2022-10-11
申请号：US16654314
申请日：2019-10-16
Applicant: DENSO CORPORATION
Inventor： Takaharu Kozawa , Shuji Kuramitsu , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Toshihiro Fujita , Shuhei Miyachi , Masaya Taki , Toshimitsu Sakai , Katsuhiko Hayashi
IPC: B62D15/02 , B60R16/027 , B62D5/04
Abstract: A steering angle detection device is provided with a plurality of rotation angle sensors and a plurality of control units. The rotation angle sensors are capable of at least continuously calculating a rotation speed while an ignition switch of a vehicle is turned off, and are provided so as to correspond to steering angle calculation units which calculate steering angle based on the rotation speed and a rotation angle acquired from the rotation angle sensors and midpoint information related to the neutral position of a steering member. Power supplies are provided on a per-system basis. The rotation angle sensors or the control units are capable of holding the midpoint information while the ignition switch is turned off. If a power supply abnormality resulting in power supply failure occurs in some of the systems, the control unit of the abnormal system acquires the midpoint information and the rotation speed from the control unit of a normal system when the ignition switch is turned on.
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公开(公告)号：US11091201B2
公开(公告)日：2021-08-17
申请号：US16091247
申请日：2017-04-06
Applicant: DENSO CORPORATION
Inventor： Toshihiro Fujita , Katsuhiko Hayashi , Takaharu Kozawa , Shuhei Miyachi , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Shuji Kuramitsu , Toshimitsu Sakai , Masaya Taki
Abstract: In a rotation detecting apparatus, each of first and second sensor elements measures rotation of a detection target. A circuit module includes first and second rotational angle calculators each calculating, based on a corresponding one of a first measurement value of the first sensor element and a second measurement value of the second sensor element, a rotational angle of the detection target. The circuit module includes first and second rotation number calculators each calculating, based on the corresponding one of the first measurement value and the second measurement value, a rotation number of the detection target. The circuit module includes first and second communicators each outputting, to a controller, a rotational angle signal based on the rotational angle and a rotation number signal based on the rotation number. A package packages the first and second sensor elements, and is mounted to a circuit board separately from the controller.
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公开(公告)号：US10668945B2
公开(公告)日：2020-06-02
申请号：US16243503
申请日：2019-01-09
Applicant: DENSO CORPORATION
Inventor： Masaya Taki , Toshimitsu Sakai , Koichi Nakamura , Shuji Kuramitsu
IPC: F04D15/00 , H02K7/14 , B62D5/04 , G06F1/12 , H02P25/22 , H02P27/06 , B62D6/08 , G06F1/06 , G06F1/26 , G06F9/4401
Abstract: A motor control apparatus includes: multiple motor drive circuits that drive at least one motor; and multiple microcomputers that are operated by a microcomputer power source and include a drive signal generator that generates a motor drive signal. The microcomputers include at least one microcomputer including a stop determiner that determines that operation of an own microcomputer is about to be stopped and transmits information as a stop determination signal. A microcomputer having received the stop determination signal from at least one different microcomputer actually stops operation of an own microcomputer.
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公开(公告)号：US10666179B2
公开(公告)日：2020-05-26
申请号：US16083691
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Koichi Nakamura , Shuji Kuramitsu , Atsuko Oka
Abstract: A control system includes a plurality of control devices each including an initial check unit that performs an initial check before drive control of a rotary electric machine, a transmission/reception unit that transmits/receives an end signal indicating that the initial check is ended, and a drive control unit that performs the drive control of the rotary electric machine after the initial check. The drive control unit starts the drive control of the rotary electric machine when the initial check of the corresponding control device is ended and the end signal is acquired from another control device, and starts the drive control of the rotary electric machine after a lapse of a predetermined time from the start of the initial check of the corresponding control device when the initial check of the corresponding control device is ended and the end signal is not acquired from the another control device.
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公开(公告)号：US10300944B2
公开(公告)日：2019-05-28
申请号：US15158283
申请日：2016-05-18
Applicant: DENSO CORPORATION
Inventor： Takaharu Kozawa , Shuji Kuramitsu , Koichi Nakamura , Katsuhiko Hayashi , Masaya Taki , Toshimitsu Sakai
Abstract: A sensor device including a first output circuit generating and outputting a first output signal that is generated as a signal sequence from a first main signal based on a detection value of a first main sensor element to a first sub signal based on a detection value of a first sub sensor element, a second output circuit generating and outputting a second output signal that is generated as a signal sequence from a second main signal based on a detection value of a second main sensor element to a second sub signal based on a detection value of a second sub sensor element, and an abnormality determiner determining abnormality of the device based on the first output signal and the second output signal.
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