公开(公告)号：US11827199B2

公开(公告)日：2023-11-28

申请号：US16759381

申请日：2018-11-06

Applicant: ADVICS CO., LTD.

Inventor： Tatsushi Kobayashi ,  Tomotaka Asano ,  Yasuhito Ishida ,  Ryosuke Endo ,  Takayuki Yamamoto

IPC: B60T8/40 ,  B60T8/171 ,  B60T13/68 ,  B60T17/22 ,  B60T7/04

CPC classification number: B60T8/171 ,  B60T8/409 ,  B60T13/686 ,  B60T17/221 ,  B60T7/042 ,  B60T2270/82 ,  B60T2270/88

Abstract: A vehicle brake device includes a stroke simulator, a stroke sensor, and a brake start determination unit. The stroke simulator includes a cylinder, a piston, an orifice, and a pressure sensor. The cylinder defines a liquid pressure chamber to which a brake liquid is supplied via a fluid path. The piston slides in the cylinder by the brake liquid supplied to the liquid pressure chamber. The orifice is formed in the fluid path. The pressure sensor detects a reaction pressure. The stroke sensor is configured to detect the stroke. The brake start determination unit determines an operation of the brake operation member has been started in a case where the reaction pressure detected by the pressure sensor becomes equal to or greater than a first threshold value and the stroke detected by the stroke sensor becomes equal to or greater than a second threshold value.

公开(公告)号：US20230361703A1

公开(公告)日：2023-11-09

申请号：US17802167

申请日：2021-03-08

Applicant: ADVICS CO., LTD.

Inventor： Yuya HORIE ,  Tomoya TAKAHASHI

IPC: H02P21/22 ,  H02P21/18 ,  H02P27/06

CPC classification number: H02P21/22 ,  H02P21/18 ,  H02P27/06

Abstract: A current command value deriving unit of a motor control device derives a d-axis current command value and a q-axis current command value based on a torque current map and a torque command value. A voltage command value deriving unit executes a first process of deriving a d-axis voltage command value based on the d-axis current command value and deriving a q-axis voltage command value based on q-axis current command value, and a second process of deriving the d-axis voltage command value based on the q-axis current command value and deriving the q-axis voltage command value based on a limit voltage and the d-axis voltage command value. When a motor is driven by field-weakening control, the voltage command value deriving unit switches from the second process to the first process when it is determined that the voltage command value satisfying the torque command value is derivable by the first process.

公开(公告)号：US11794709B2

公开(公告)日：2023-10-24

申请号：US16980113

申请日：2019-03-28

Applicant: ADVICS CO., LTD.

Inventor： Kunihiro Nishiwaki ,  Jun Nomura ,  Yasuhito Ishida ,  Tatsushi Kobayashi

IPC: B60T8/17 ,  B60T13/68 ,  B60T8/40 ,  B60T15/02 ,  B60T8/44

CPC classification number: B60T13/686 ,  B60T8/17 ,  B60T8/4081 ,  B60T15/028 ,  B60T8/441 ,  B60T2220/04 ,  B60T2270/82

Abstract: The present disclosure comprises a reservoir cutoff valve provided on a pipe and configured to be opened in a non-energization state; a simulator cutoff valve provided on a pipe and configured to be closed in a non-energization state; an operation determination circuit configured to determine whether the brake operation member is in an operation execution state in which the brake operation member is being operated is; and a current control circuit that, when the operation determination circuit determines that the brake operation member is not in an operation execution state, supplies a first current to the reservoir cutoff valve, and when the operation determination circuit determines that the brake operation member is in an operation execution state, supplies a second current greater than the first current to the reservoir cutoff valve.

公开(公告)号：US20230331208A1

公开(公告)日：2023-10-19

申请号：US18043682

申请日：2021-09-29

Applicant: ADVICS CO., LTD.

Inventor： Shingo ONODA

IPC: B60T8/32 ,  G01D5/16 ,  B60T13/74 ,  F15B15/28

CPC classification number: B60T13/745 ,  B60T8/326 ,  F15B15/2815 ,  G01D5/16 ,  B60T2220/04

Abstract: In a brake fluid pressure control apparatus, a sensing device is integrally fixed to a master piston. The sensing device including the body to be sensed, which may include a magnet, and a sensing body, which may include a sensor. The sensing bodying sensing an axial position of the master piston without relative movement, that is, without providing play. This arrangement improves the sensing precision of the sensing device. Since it is not necessary to provide a member separate from the master piston in order to retain the body to be sensed, it is possible to achieve downsizing of the brake fluid pressure control apparatus.

公开(公告)号：US11787292B2

公开(公告)日：2023-10-17

申请号：US15733910

申请日：2019-06-24

Applicant: ADVICS CO., LTD.

Inventor： Masaki Maruyama ,  Shunya Watanabe

IPC: B60T8/40 ,  B60L7/26 ,  B60T8/17 ,  B60T13/68

CPC classification number: B60L7/26 ,  B60T8/17 ,  B60T13/686 ,  B60T2270/604

Abstract: A brake control device applied to a vehicle including a regenerative generator connected to a front wheel has an electric pump, and first and second pressure adjustment valves. The first pressure adjustment valve is provided in a brake fluid reflux path including the electric pump, adjusts the brake fluid to a first hydraulic pressure, and adjusts a rear wheel hydraulic pressure in a rear wheel cylinder to the first hydraulic pressure. The second pressure adjustment valve is provided in the reflux path, reduces the first hydraulic pressure to a second hydraulic pressure, and adjusts front wheel hydraulic pressure in a front wheel cylinder to the second hydraulic pressure. A front wheel flow rate to increase the front wheel hydraulic pressure is calculated using a brake operation member operation amount and a regeneration amount of the regenerative generator. The first pressure adjustment valve is controlled using the front wheel flow rate.

公开(公告)号：US20230304804A1

公开(公告)日：2023-09-28

申请号：US18160092

申请日：2023-01-26

Applicant: ADVICS CO., LTD. ,  J-QuAD DYNAMICS INC. ,  DENSO CORPORATION ,  AISIN CORPORATION ,  JTEKT CORPORATION

Inventor： Yosuke OHMORI

IPC: G01C21/34 ,  B60W60/00 ,  B60W40/072

CPC classification number: G01C21/3415 ,  B60W40/072 ,  B60W60/0016 ,  G01C21/3461 ,  B60W2552/30

Abstract: A controller computes availability of the vehicle that indicates a range reachable by the vehicle by actuation of the actuator and generates a first travel route within a range of the availability of the vehicle, as a travel route followed by the vehicle, when the vehicle travels along a road ahead of the vehicle from a present position. When the road includes a curve and the first travel route cannot be generated within the availability range, the controller sets a target position to a position in the road located before the curve and generates a second travel route within the availability range, as the travel route followed by the vehicle, to stop the vehicle at the target position.

公开(公告)号：US20230303042A1

公开(公告)日：2023-09-28

申请号：US18026948

申请日：2021-09-30

Applicant: ADVICS CO., LTD.

Inventor： Yusaku YAMAMOTO

IPC: B60T7/12 ,  B60T8/176 ,  B60T8/32

CPC classification number: B60T7/12 ,  B60T8/176 ,  B60T8/321

Abstract: A braking control device executes pre-stop braking control to adjust a braking force when a vehicle stops. The pre-stop braking control includes reduction control that reduces the braking force, and increase control that is executed before the reduction control is started, to increase the braking force. An increasing unit executes the increase control, and a reducing unit executes the reduction control. A calculation unit calculates a braking distance extended by the reduction control, as an extended distance, and calculates a braking distance shortened by the increase control, as a shortened distance. The calculation unit calculates the extended distance to become longer when an operation amount of a braking operation member operated by a driver is reduced during braking than when the operation amount is not reduced. When a difference between the extended distance and the shortened distance is less than a determination value, the reducing unit starts the reduction control.

公开(公告)号：US20230278624A1

公开(公告)日：2023-09-07

申请号：US18159854

申请日：2023-01-26

Applicant: ADVICS CO., LTD. ,  J-QuAD DYNAMICS INC. ,  DENSO CORPORATION ,  AISIN CORPORATION ,  JTEKT CORPORATION

Inventor： Yosuke OHMORI

IPC: B62D7/15 ,  B62D6/00

CPC classification number: B62D7/15 ,  B62D6/00

Abstract: A motion control device includes a request value acquisition unit that obtains a motion amount request value, a limit value setting unit that sets first to third motion amount limit values, a first command unit that sends a first motion amount command value based on the motion amount request value and a first motion amount limit value to a front wheel steering controller, a second command unit that sends a second motion amount command value based on a first remaining request value and a second motion amount limit value to a rear wheel steering controller, and a third command unit that sends a command corresponding to a third motion amount command value based on a second remaining request value and a third motion amount limit value to a driving controller and a braking controller.

公开(公告)号：US11738728B2

公开(公告)日：2023-08-29

申请号：US17274244

申请日：2019-09-24

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/1761 ,  B60T8/172 ,  B60T8/173

CPC classification number: B60T8/1761 ,  B60T8/172 ,  B60T8/173

Abstract: A step determination device includes an operation amount sensor that detects an operation amount of a braking operation member, and a controller that determines a step by using the wheel speed and the operation amount. In the step determination device, the controller calculates an actual variable amount by using the wheel speed, calculates an estimated variable amount corresponding to the actual variable amount by using the operation amount, and executes the determination of the step by using the actual variable amount and the estimated variable amount. For example, the controller determines the presence of the step when the deviation between the actual variable amount and the estimated variable amount is not less than a predetermined value, and determines the absence of the step when the deviation is less than the predetermined value.

公开(公告)号：US11731598B2

公开(公告)日：2023-08-22

申请号：US17418600

申请日：2019-12-25

Applicant: ADVICS CO., LTD.

Inventor： Yusaku Yamamoto

IPC: B60T8/1755 ,  B60T8/172

CPC classification number: B60T8/1755 ,  B60T8/172 ,  B60T2230/04

Abstract: A brake control device includes: a decrease determination unit that determines whether a requested braking force for a vehicle is decreasing; and a brake control unit which, on the condition that the decrease determination unit determines that the requested braking force is decreasing during deceleration of the vehicle, executes ratio change decrease control of reducing the braking force of the vehicle according to the decrease of the requested braking force, while making a braking force distribution ratio smaller than a reference braking force distribution ratio. The reference braking force distribution ratio is the braking force distribution ratio at a time point when the requested braking force starts to decrease.