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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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公开(公告)号：US20190039643A1
公开(公告)日：2019-02-07
申请号：US16083665
申请日：2017-02-01
Applicant: DENSO CORPORATION
Inventor： Atsuko OKA , Shuji KURAMITSU , Koichi NAKAMURA
Abstract: A sensor device includes: multiple sensor units, each of which includes multiple sensor elements and a signal processing unit that generates and transmits an output signal including multiple detection signals corresponding to detection values of the sensor elements; and multiple control units, each of which includes a communication unit that receives the output signal, an abnormality monitoring unit that monitors abnormality of the respective sensor unit, and a physical quantity computation unit that computes a physical quantity based on at least one of the detection signals which is normal. One control unit mutually transmits and receives the detection signals as subject sensor signals received from the respective sensor unit and the detection signals as other sensor signals received from another one of the control units with another system control unit.
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公开(公告)号：US20200180685A1
公开(公告)日：2020-06-11
申请号：US16702912
申请日：2019-12-04
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Shuji KURAMITSU , Nobuyori NAKAJIMA , Go ENDOH , Haruo SUZUKI , Koichi NAKAMURA , Yosuke OGI , Atsuko OKA
Abstract: A steering system in a vehicle includes a plurality of subsystems provided with a control unit. The control unit includes a storage unit storing steer angle information regarding a steer angle of one of a steering mechanism and a steered mechanism when the steering mechanism or the steered mechanism stops, an abnormality determiner determining abnormality of the motor rotation detection value and the detection circuit in the plurality of subsystems at a start time of a motor based on a comparison of at least two parameters, and a steer angle calculator calculating the steer angle based on the parameters having been determined by the abnormality determiner as not abnormal.
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公开(公告)号：US20200180683A1
公开(公告)日：2020-06-11
申请号：US16701567
申请日：2019-12-03
Applicant: DENSO CORPORATION , Nagoya Institute of Technology
Inventor： Shuji KURAMITSU , Hiroyasu OTAKE , Ryo KANO , Yoshifumi MORITA , Hironao WATANABE , Takayuki KATO
IPC: B62D5/04
Abstract: An electric power steering device including a column actuator disposed on a column side of the intermediate shaft and outputting a column assist torque; a rack actuator disposed on a rack side of the intermediate shaft and outputting a rack assist torque; a column torque sensor coaxially disposed with the steering shaft and detecting a column torsion torque; a rack torque sensor coaxially disposed with the intermediate shaft and detecting a rack torsion torque; and a calculator calculating instruction values of the column assist torque and the rack assist torque based on the torsion torques.
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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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Patent Agency Ranking
公开(公告)号：US20200180684A1
公开(公告)日：2020-06-11
申请号：US16701592
申请日：2019-12-03
Applicant: DENSO CORPORATION , Nagoya Institute of Technology
Inventor： Shuji KURAMITSU , Hiroyasu OTAKE , Ryo KANO , Yoshifumi MORITA , Hironao WATANABE , Takayuki KATO
Abstract: A calculator or an electronic control unit (ECU) calculates an instruction value of a column assist torque and a rack assist torque output from a column actuator, or a column motor, and a rack actuator, or a rack motor, based at least on a torsion torque. The calculator includes a base assist controller, a stabilization controller, and an adder. The base assist controller individually or commonly calculates a base assist torque based on the torsion torque. The stabilization controller individually or commonly calculates a stabilization torque for stabilizing a steering system. The adder performs addition of the base assist torque and the stabilization torque.
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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：US20200207408A1
公开(公告)日：2020-07-02
申请号：US16711794
申请日：2019-12-12
Applicant: DENSO CORPORATION
Inventor： Koichi NAKAMURA , Nobuyori NAKAJIMA , Go ENDOH , Yosuke OGI , Atsuko OKA , Shuji KURAMITSU , Takashi SUZUKI , Haruo SUZUKI
Abstract: A motor controller for controlling a motor includes first and second angle sensors detecting motor rotation, and first and second detection circuits detecting rotation number information based on sensor output from the angle sensors. Further, the motor controller includes a steer angle information obtainer obtaining steer angle information involving steering of a vehicle from an external sensor, which is different from the angle sensors, and an abnormality determiner determining abnormality of information that has a matching degree of lower than a preset value when post-conversion information, or value measured by the same characteristics. This information is compared with each other after conversion from the rotation number information and from the steer angle information, and is used by a control amount calculator to calculate a control amount of the motor based on the information determined as having no abnormality by the abnormality determiner.
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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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