-
公开(公告)号：US20200207406A1
公开(公告)日：2020-07-02
申请号：US16711857
申请日：2019-12-12
Applicant: DENSO CORPORATION
Inventor： Go ENDOH , Nobuyori NAKAJIMA , Koichi NAKAMURA , Hiroyasu OTAKE
Abstract: Each of a plurality of microcomputers outputs a motor drive signal, which is generated based on a current command value and a current limit value as a control amount command value and a control amount limit value, to each motor drive circuit. When an OFF determination of an own microcomputer is made, each microcomputer executes first end processing as a first stage of end processing and transmits an OFF determination signal to the other microcomputer. When the OFF determination signal is received from the other microcomputer, each microcomputer determines that the OFF determination has been made and starts second end processing which gradually decreases the current command value or the current control limit value from a present value. When the second end processing is completed and power-off preparation of the own microcomputer and the other microcomputer is completed, each microcomputer executes final end processing for turning off the power supply relay.
-
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.
-
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.
-
公开(公告)号：US20200247465A1
公开(公告)日：2020-08-06
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.
-
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.
-
Patent Agency Ranking
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.
-
7.发明申请公开(公告)号：US20190256130A1
公开(公告)日：2019-08-22
申请号：US16405129
申请日：2019-05-07
Applicant: DENSO CORPORATION
Inventor： Shuji KURAMITSU , Koichi NAKAMURA , Atsuko OKA , Masaya TAKI , Hideki KABUNE
Abstract: A rotary electric device control device for controlling driving of a rotary electric device including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units that include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively. The one of the control units generates a control signal according to a command value calculated by each system, a host system detection value relating to a detection value of a host system, and another system detection value relating to another detection value of another system. An electric power steering device includes: the 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.
-
8.发明申请公开(公告)号：US20190256129A1
公开(公告)日：2019-08-22
申请号：US16405040
申请日：2019-05-07
Applicant: DENSO CORPORATION
Inventor： Atsuko OKA , Shuji KURAMITSU , Koichi NAKAMURA , Nobuyori NAKAJIMA , Go ENDOH , Yosuke OGI
Abstract: A rotary electric machine control device for controlling driving of a rotary electric machine including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units, each of which includes: an individual current limit value calculation unit; a current limit value calculation unit; and a control signal calculation unit. The current limit value calculation unit switches between a current limit value sharing mode and a current limit value non-sharing mode. An electric power steering device includes: the rotary electric machine control device; the rotary electric machine 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 machine to a drive target.
-
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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.017 seconds)
