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公开(公告)号：US20240010267A1
公开(公告)日：2024-01-11
申请号：US18346639
申请日：2023-07-03
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Kaishi MONOBE , Yuji FUJITA , Kazuma HASEGAWA , Yuuta KAJISAWA , Yugo NAGASHIMA , Takashi KOUDAI , Kenichi ABE , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Takeshi IWANA
CPC classification number: B62D5/006 , B62D5/0466 , B62D6/008
Abstract: A steering control device includes a first reaction force control circuit and a second reaction force control circuit. Each of the first reaction force control circuit and the second reaction force control circuit are configured to control a reaction force motor, to execute, at a starting time, a preparation process including a process that requires the steering wheel to automatically rotate through the reaction force motor, and to store, at a time of execution completion of the preparation process, information indicating whether the preparation process has been normally completed. In a case where the first reaction force control circuit has been reset, when the information indicates that the preparation process has been normally completed, the first reaction force control circuit that has been rest is configured to not execute the preparation process at a time of restarting after completion of the reset.
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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：US20190241214A1
公开(公告)日：2019-08-08
申请号：US16264282
申请日：2019-01-31
Applicant: DENSO CORPORATION
Inventor： Atsuko OKA , Nobuyori NAKAJIMA , Go ENDOH , Koichi NAKAMURA , Yosuke OGI
CPC classification number: B62D6/10 , B62D5/0463
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：US20240025471A1
公开(公告)日：2024-01-25
申请号：US18354743
申请日：2023-07-19
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takashi KOUDAI , Yuji FUJITA , Kenichi ABE , Yugo NAGASHIMA , Kazuma HASEGAWA , Yuuta KAJISAWA , Masaharu YAMASHITA , Shintaro TAKAYAMA , Takeshi IWANA , Hiroki TOMIZAWA , Toyohiro HAYASHI , Hayaki TANABE , Nobuyori NAKAJIMA
IPC: B62D5/04
CPC classification number: B62D5/046
Abstract: A vehicle control unit includes a controller configured to make a state transition to a normal control state via a start-up state after a power source system of a vehicle is started. The start-up state is a state where it is possible to execute a preparation process, required for making a state transition to the normal control state, by controlling an operation member so as to move automatically. The controller is configured to execute, in the start-up state: a forced-ending condition determination process of determining whether a forced-ending condition showing that the preparation process being executed is to be forcedly ended from start of execution of the preparation process is met; a forced-ending process of forcedly ending the preparation process being executed when the forced-ending condition is met; and a notification process of notifying the driver of forced ending of the preparation process.
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公开(公告)号：US20200313590A1
公开(公告)日：2020-10-01
申请号：US16817964
申请日：2020-03-13
Applicant: DENSO CORPORATION
Inventor： Hiroyasu OTAKE , Nobuyori NAKAJIMA , Go ENDOH
IPC: H02P21/22 , H02P25/22 , H02P27/08 , H02M7/5387 , B62D5/04
Abstract: A motor control device includes a plurality of systems capable of controlling current supply to a motor. Each microcomputer of first and second systems is configured to communicate information of the own system and the other system by inter-computer communication and has an independent ground potential. A power supply current flowing between a power supply and a power converter is assumed to be positive and negative in a power running state and a regeneration state. Each microcomputer monitors the power supply current of each system by the inter-computer communication, and executes a power supply current balancing process of limiting a current command value or a voltage command value of at least one of the two systems thereby to decrease a power supply current difference between the two systems when the power supply current difference between the two systems exceeds a target value.
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Patent Agency Ranking
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.
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公开(公告)号：US20200039579A1
公开(公告)日：2020-02-06
申请号：US16530091
申请日：2019-08-02
Applicant: DENSO CORPORATION
Inventor： Toshihiro FUJITA , Nobuyori NAKAJIMA , Masaya TAKI , Takahiro SUZUKI
Abstract: An ECU includes plural sensor units and plural control units. The sensor units include magnetic field detection elements for detecting a rotation of a motor, and output mechanical angles related to the rotation angle in one rotation and count values related to the number of rotations of the motor, respectively. One rotation of the motor is divided into indefinite regions, in which detection deviation of the count values may occur, and definite regions, in which no detection deviation occurs. The definite region of the count value is set to deviate from the definite region of the other count value. Absolute angle calculation units calculate the absolute angles using the count values of the definite regions.
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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.
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公开(公告)号：US20240227923A9
公开(公告)日：2024-07-11
申请号：US18485710
申请日：2023-10-12
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Yuuta KAJISAWA , Yuji FUJITA , Yugo NAGASHIMA , Kazuma HASEGAWA , Takashi KOUDAI , Kaishi MONOBE , Kenichi ABE , Masaharu YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Yasushi HORA , Yosuke YAMASHITA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Toyohiro HAYASHI , Takeshi IWANA
CPC classification number: B62D5/0484 , B62D5/046 , H02P23/00
Abstract: A vehicle power supply system includes a power source control device that executes a process of switching a connection state of a driving circuit to the main power source and an auxiliary power source including; a process of switching the connection state so as to transition to a backup state as a voltage decrease of the main power source occurs, and a process of switching the connection state so as to transition to a normal state as the voltage decrease of the main power source is resolved. After a voltage decrease of the main power source occurs, a turning-side control device of a steering control unit sets an output-limited state for a turning-side motor. The output-limited state is canceled upon the power source control device completing switching of the connection state so as to transition.
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公开(公告)号：US20240088814A1
公开(公告)日：2024-03-14
申请号：US18511618
申请日：2023-11-16
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , JTEKT CORPORATION
Inventor： Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Tomoaki YOSHIMI , Toyohiro HAYASHI , Yosuke YAMASHITA , Shintaro TAKAYAMA , Yuuta KAJISAWA , Yuji FUJITA
CPC classification number: H02P27/06 , B62D5/0484 , H02J9/062 , B62D5/006
Abstract: When a DC power source fails, the following controls are performed. The normal control is resumed when an inverter input voltage recovers before a standby period elapses after a power failure time. A power source relay is turned off when the standby period elapses without recovery of the voltage. The power source relay is turned on again when a power source relay off period has elapsed from a turn-off time. The normal control is resumed when the inverter input voltage recovers at the turn-on time. The normal control is resumed when the inverter input voltage recovers before the power source relay on period elapses from the turn-on time. The power source relay is turned off, and driving of the actuator is stopped, when the power source relay on period passes without recovery of the voltage.
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