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公开(公告)号：US20200047806A1
公开(公告)日：2020-02-13
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 , B62D5/04 , B60R16/027
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：US20200047805A1
公开(公告)日：2020-02-13
申请号：US16654307
申请日：2019-10-16
Applicant: DENSO CORPORATION
Inventor： Atsuko OKA , Shuji KURAMITSU , Koichi NAKAMURA , Yuki WATANABE , Toshihiro FUJITA , Takaharu KOZAWA , Shuhei MIYACHI , Katsuhiko HAYASHI , Masaya TAKI , Toshimitsu SAKAI
IPC: B62D15/02 , B62D5/04 , B60R16/027
Abstract: A steering angle detection device includes plural control units and plural steering angle sensors. Each control unit is configured to transmit steering angle information related to a steering angle of a vehicle to an external device and transmit and receive information mutually therebetween. Each steering angle sensor is provided in correspondence to each control unit and configured to output a sensor signal corresponding to a detection value of a change in the steering angle to the corresponding control unit. One of the control units transmits, as a transmission control unit, the steering angle information to the external device at one transmission timing.
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公开(公告)号：US20190283800A1
公开(公告)日：2019-09-19
申请号：US16296851
申请日：2019-03-08
Applicant: DENSO CORPORATION
Inventor： Masaya TAKI , Koichi NAKAMURA , Toshimitsu SAKAI , Nobuyori NAKAJIMA
Abstract: An ECU includes a plurality of motor driving circuits for driving at least one motor, a plurality of computers and a plurality of clock circuits. A first computer, which is at a synchronization signal transmission-side, transmits a synchronization signal to a second computer, which is at a synchronization signal reception-side. The first computer and the second computer execute a plurality of specific periodic processes, which are processes executed at cycle periods (for example, 200 μs, 400 μs) of different natural number multiples of a cycle period (for example, 200 μs) of the synchronization signal and need be synchronized. Each timing of the plurality of specific periodic processes is determined based on one synchronization signal.
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公开(公告)号：US20190144030A1
公开(公告)日：2019-05-16
申请号：US16243519
申请日：2019-01-09
Applicant: DENSO CORPORATION
Inventor： Toshimitsu SAKAI , Masaya TAKI , Shuji KURAMITSU , Koichi NAKAMURA
Abstract: A motor control apparatus include: multiple motor drive circuits that drives at least one motor; multiple microcomputers that include a drive signal generator, and a drive timing generator; and multiple clock generation circuits. The microcomputers include a synchronization signal transmitter microcomputer as at least one microcomputer that transmits a synchronization signal synchronized with the drive timing of an own microcomputer and synchronizing the drive timing of the microcomputers. The microcomputers include a synchronization signal receiver microcomputer as at least one microcomputer that receives the synchronization signal transmitted from the synchronization signal transmitter microcomputer.
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Patent Agency Ranking
公开(公告)号：US20190144029A1
公开(公告)日：2019-05-16
申请号：US16243503
申请日：2019-01-09
Applicant: DENSO CORPORATION
Inventor： Masaya TAKI , Toshimitsu SAKAI , Koichi NAKAMURA , Shuji KURAMITSU
CPC classification number: B62D5/0463 , B62D5/0403 , B62D5/0412 , B62D5/0457 , B62D5/0481 , B62D6/08 , G06F1/06 , G06F1/12 , G06F1/26 , G06F9/4401 , H02P25/22 , H02P27/06
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：US20190144028A1
公开(公告)日：2019-05-16
申请号：US16243460
申请日：2019-01-09
Applicant: DENSO CORPORATION
Inventor： Masaya TAKI , Shuji KURAMITSU , Koichi NAKAMURA , Toshimitsu SAKAI
Abstract: A synchronization signal generating portion of a transmitter microcomputer generates a synchronization signal that is synchronized with a drive timing of the own microcomputer and also causes to synchronize the drive timing of microcomputers, and transmits to a receiver microcomputer. A timing corrector of the receiver microcomputer is capable of correcting the drive timing of the own microcomputer so as to synchronize with the received synchronization signal, and includes a timing determiner which determines whether the received synchronization signal is normal or abnormal. The receiver microcomputer permits the timing correction if the synchronization signal is determined to be normal in the timing determination, and prohibits timing correction and drives the motor asynchronously with the transmitter microcomputer if the synchronization signal is determined to be abnormal.
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公开(公告)号：US20190291775A1
公开(公告)日：2019-09-26
申请号：US16298224
申请日：2019-03-11
Applicant: DENSO CORPORATION
Inventor： Masaya TAKI , Toshihiro FUJITA , Shuji KURAMITSU , Koichi NAKAMURA , Toshimitsu SAKAI
IPC: B62D5/04
Abstract: An ECU, which is a signal control apparatus, has a plurality of control units, which control one same motor. Steering angle calculation units acquire sensor signals from the angle sensors provided corresponding to the steering angle calculation units, respectively, and calculate the steering angles in correspondence to the sensor signals. The angle FB units perform the angle FB control based on the angle differences, which are between the target angle and the steering angle and between the target angle and the steering angle, respectively. In the angular FB unit of at least one of the control units, the angular feedback control is performed using the angle difference, which is subjected to the correction processing to reduce the error between the detection angle of the own system and the detection angle of the other system calculated by the steering angle calculation unit of the other control unit.
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公开(公告)号：US20190260324A1
公开(公告)日：2019-08-22
申请号：US16405049
申请日：2019-05-07
Applicant: DENSO CORPORATION
Inventor： Shuji KURAMITSU , Koichi NAKAMURA , Atsuko OKA , Masaya TAKI , Hideki KABUNE , Yuki WATANABE , Toshimitsu SAKAI , Yosuke OGI
Abstract: A rotary electric device control device controls driving of a rotary electric device including a plurality of winding sets. The rotary electric device control device includes: a plurality of drive circuits; and a plurality of control units. The control units include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively, and communicate with each other. The control units include: one master control unit; and at least one slave control unit. An electric power steering device includes: a rotary electric device control device; the rotary electric device that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric device to a drive target.
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公开(公告)号：US20190152524A1
公开(公告)日：2019-05-23
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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