公开(公告)号：US20230278541A1

公开(公告)日：2023-09-07

申请号：US18315732

申请日：2023-05-11

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: B60W30/02 ,  B60W30/18 ,  B60W10/192 ,  B60W10/20 ,  B60L7/26 ,  B60K7/00 ,  B60W10/08

CPC classification number: B60W30/02 ,  B60W30/18109 ,  B60W10/192 ,  B60W10/20 ,  B60L7/26 ,  B60K7/0007 ,  B60W30/18127 ,  B60W10/08 ,  B60W2710/18 ,  B60W2710/20 ,  B60W2720/14 ,  B60W2510/18 ,  B60W2710/083

Abstract: A braking device is mounted on a vehicle having two or more rows of right and left wheels, electric brakes, and at least one steering actuator. The steering actuator is capable of turning at least one row of the right and left wheels regardless of a steering wheel operation. The braking device includes a braking control unit configured to control a braking force of the electric brake for each of the wheels and operation of the steering actuator. When an abnormality detector detects an abnormality in the electric brakes, the braking control unit switches to an abnormal-time braking control different from a normal state control, at least controlling the steering actuator so as to suppress an influence on the vehicle due to the abnormality.

公开(公告)号：US20240317201A1

公开(公告)日：2024-09-26

申请号：US18734553

申请日：2024-06-05

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: B60T13/74 ,  B60T8/172 ,  B60T8/1761 ,  B60T8/1766

CPC classification number: B60T13/741 ,  B60T8/172 ,  B60T8/17616 ,  B60T8/1766

Abstract: A vehicle braking apparatus is adapted to a vehicle in which electric brakes are separately provided for wheels, and the electric brakes separately exert braking forces on the wheels. A braking force controller controls the braking forces separately exerted by the electric brakes. A first pair of electric brakes are provided for a front-left wheel and a front-right wheel, and a second pair of electric brakes are provided for a rear-left wheel and a rear-right wheel. At least one of the first pair of electric brakes or the second pair of electric brakes are multiphase electric brakes, and each of the multiphase electric brakes includes a multiphase motor having three or more phases. The braking force controller executes an up-down process to prevent a current from being concentrated on a particular phase of the multiphase motor, except when the vehicle satisfies a predetermined exemption condition.

公开(公告)号：US20240322725A1

公开(公告)日：2024-09-26

申请号：US18678862

申请日：2024-05-30

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: H02P21/22 ,  H02P21/18 ,  H02P21/20

CPC classification number: H02P21/22 ,  H02P21/18 ,  H02P21/20

Abstract: A motor controller includes a power converter and a current command calculator. The power converter supplies alternating current power to each phase of a multiphase motor by converting input power. The current command calculator calculates a current command value for a current supplied to the multiphase motor, the current command value being defined by a current amplitude and a current phase, the current command calculator executes a phase adjustment process in a case where the multiphase motor is in locking energization being a state in which the multiphase motor is being energized while the multiphase motor has stopped rotation, except when the multiphase motor satisfies a predetermined exemption condition. The phase adjustment process is a process in which the current phase of the current command value is changed over time to prevent the multiphase motor from being energized on same phase for a predetermined time or longer.

公开(公告)号：US20240250624A1

公开(公告)日：2024-07-25

申请号：US18625024

申请日：2024-04-02

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: H02P3/18 ,  H02P23/14 ,  H02P25/03

CPC classification number: H02P3/18 ,  H02P23/14 ,  H02P25/03

Abstract: A motor control device controls energization to a motor having two three-phase winding sets configured such that their electrical angle phase difference is ±(φ+120×n)° (0

公开(公告)号：US20230231498A1

公开(公告)日：2023-07-20

申请号：US18186858

申请日：2023-03-20

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA ,  TAKASHI SUZUKI

IPC: H02P5/68 ,  B60L50/51 ,  H02M7/5395

CPC classification number: H02P5/68 ,  B60L50/51 ,  H02M7/5395

Abstract: A motor control device drives first and second motors for outputting torque in braking or non-braking direction in a vehicle brake device, includes: an electric power converter that includes first to third legs having positive and negative switch elements; and a control unit. When the control unit energizes from the positive switch element of the first or third leg to the negative switch element of the second leg, the first and second motors output the torque in a same direction. When an absolute value of current flowing or estimated to flow in at least one of the first motor and the second motor exceeds a current threshold, the control unit drives the positive and negative switch elements of the second leg.

公开(公告)号：US20250136075A1

公开(公告)日：2025-05-01

申请号：US19008293

申请日：2025-01-02

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: B60T8/58 ,  B60T8/171 ,  B60T8/172

Abstract: A vehicle braking device with electric brakes includes a braking force controller. This controller adjusts braking forces based on an external command. The electric brakes show hysteresis characteristics: braking force rises with increasing current along a positive efficiency line and holds steady when current drops from a turning value to a holding threshold. Further current decrease leads to a reduction in braking force along an inverse efficiency line. The actual braking force has an increasing period when it follows the positive efficiency line and a holding period when it stays constant as current decreases to the holding threshold. If the vehicle does not meet an exclusion requirement and the required braking force is rising, the controller switches from the increasing period to the holding period when the actual braking force matches the target braking force. It switches back to the increasing period when the difference between the actual and target braking forces reaches a predetermined threshold.

公开(公告)号：US20230398967A1

公开(公告)日：2023-12-14

申请号：US18454689

申请日：2023-08-23

Applicant: DENSO CORPORATION

Inventor： YUSUKE SHIBATA

IPC: B60T8/172 ,  B60T13/74

CPC classification number: B60T8/172 ,  B60T13/74 ,  B60T17/22

Abstract: A vehicle braking device has electric brakes for generating a braking force at corresponding wheels. The vehicle braking device includes a braking force controller for controlling the braking force. A relationship between an electric current and the braking force in each of the electric brakes has a hysteresis characteristic. The hysteresis characteristic indicates that the braking force increases along a positive efficiency line when the electric current increases, the braking force is held constant when the electric current decreases from a turning value to a holding threshold, and the braking force decreases along an inverse efficiency line when the electric current decreases from the holding threshold. The braking force controller alternately switches between a positive efficiency braking wheel and the braking force holding wheel while a required braking force of the vehicle increases or is held.