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公开(公告)号：US20190299958A1
公开(公告)日：2019-10-03
申请号：US16316878
申请日：2017-07-14
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Takayuki YAMAMOTO
Abstract: A braking control device for imparting brake fluid pressure on wheel cylinders in response to operation of a braking operation member to produce braking force includes: first and second fluid pressure units for imparting brake fluid pressure by first and second power sources respectively; and a determining device for determining whether or not operation of the first fluid pressure unit is appropriate. When the determining device determines that operation is appropriate, the first fluid pressure unit imparts brake fluid pressure based on a suitability characteristic, which is the relationship between the brake fluid pressure and the braking operation member operation amount, set in advance. The second fluid pressure unit has proximity characteristics, generally matching the suitability characteristic, and notification characteristics, different from the suitability characteristic. When operation of the first fluid pressure unit is not appropriate, the second fluid pressure unit imparts brake fluid pressure based on the proximity or notification characteristics.
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公开(公告)号：US20210016755A1
公开(公告)日：2021-01-21
申请号：US16980113
申请日：2019-03-28
Applicant: ADVICS CO., LTD.
Inventor： Kunihiro NISHIWAKI , Jun NOMURA , Yasuhito ISHIDA , Tatsushi KOBAYASHI
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.
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公开(公告)号：US20200339082A1
公开(公告)日：2020-10-29
申请号：US16760756
申请日：2018-12-06
Applicant: ADVICS CO., LTD.
Inventor： Takayuki YAMAMOTO , Yasuhito ISHIDA , Tatsushi KOBAYASHI
IPC: B60T8/172 , B60T17/22 , B60T8/1761
Abstract: The present invention is a vehicle brake device in which a brake fluid pressurized by a first pressurizing device and a second pressurizing device is supplied to wheel cylinders, wherein the vehicle brake device is provided with: an acquiring unit that acquires a heating correlation value indicating a heating state of the first pressurizing device; and a control unit that executes a first control that decreases the electric power supplied to the first pressurizing device when the heating correlation value acquired by the acquiring unit is equal to or larger than a prescribed threshold value, and a second control that controls the second pressurizing device to compensate for changes in the wheel pressures, i.e., the fluid pressures inside the wheel cylinders, accompanying the execution of the first control.
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公开(公告)号：US20190100184A1
公开(公告)日：2019-04-04
申请号：US16086891
申请日：2017-03-28
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Tatsushi KOBAYASHI , Takayuki YAMAMOTO
IPC: B60T13/68 , B60T7/04 , B60T8/40 , B60W10/188 , B60W10/192
Abstract: A braking device includes: a reservoir; a master cylinder in which when the amount of operation performed on a brake pedal reaches or exceeds a predetermined amount, a port communicating between a pressure chamber and the reservoir is cut off and hydraulic pressure corresponding to the brake pedal operation amount is generated; a hydraulic pressure unit for adjusting the wheel cylinder hydraulic pressure; and a control unit for controlling the hydraulic pressure unit. The control unit determines, based on a temperature-related value related to the temperature of a friction member pressed by the wheel cylinder hydraulic pressure against a rotating member fixed to a wheel, whether the friction member is in a fade state. When the friction member is in a fade state, the control unit controls the hydraulic pressure unit to suction brake fluid from the reservoir through the port, and is fed to the wheel cylinder.
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公开(公告)号：US20210362698A1
公开(公告)日：2021-11-25
申请号：US16644004
申请日：2018-09-05
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Kunihiro NISHIWAKI , Tatsushi KOBAYASHI , Tomotaka ASANO , Ken KUZUYA , Takayuki YAMAMOTO
Abstract: A braking control device includes an upstream mechanism control unit, a determination unit, and a control unit. The upstream mechanism control unit is configured to feedback control the upstream mechanism in such a manner that a detected hydraulic pressure detected by a hydraulic pressure sensor is brought to an upstream target hydraulic pressure. The hydraulic pressure sensor detects a hydraulic pressure of the hydraulic pressure circuit. The determination unit is configured to determine, based on the detected hydraulic pressure by the hydraulic pressure sensor, whether hydraulic pressure hunting is occurring. The control unit is configured to control the downstream mechanism based on the upstream target hydraulic pressure and the target wheel pressure in a case where the determination unit determines that the hydraulic pressure hunting is occurring.
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Patent Agency Ranking
公开(公告)号：US20170274880A1
公开(公告)日：2017-09-28
申请号：US15510842
申请日：2014-11-25
Applicant: ADVICS CO., LTD.
Inventor： Kunihiro NISHIWAKI , Takayuki YAMAMOTO , Kyosuke HATA , Yasuhito ISHIDA
CPC classification number: B60T8/4086 , B60T7/042 , B60T13/14 , B60T13/146 , B60T13/662 , B60T13/686 , B60T17/22 , B60T2220/04 , B60T2270/60 , B60T2270/604
Abstract: A vehicle braking device includes: a stroke simulator for generating a hydraulic pressure corresponding to a brake operation in a hydraulic chamber, the stroke simulator having a cylinder part and a piston part for sliding through the inside of the cylinder part in conjunction with a brake operation of a brake pedal; a booster mechanism having an input part directly pressed by the piston part or pressed by a spring interposed between the input part and the piston part in conjunction with the sliding of the piston part, and thereby moved in sliding fashion through the inside of the cylinder, and a hydraulic pressure generating part for generating a first hydraulic pressure corresponding to the movement of the input part based on the hydraulic pressure of an accumulator; and a wheel cylinder for applying a braking force to a vehicle wheel on the basis of the first hydraulic pressure.
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公开(公告)号：US20160185327A1
公开(公告)日：2016-06-30
申请号：US14909330
申请日：2014-07-31
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA
IPC: B60T8/175
CPC classification number: B60T8/175 , B60T7/12 , B60T8/3205 , B60W10/04 , B60W10/06 , B60W10/18 , B60W10/188 , B60W30/188
Abstract: To enable control of vehicle speed according to the intentions of a driver by a simpler operation. When a vehicle body speed rapidly decreases and becomes lower than a brake target threshold speed, the brake target threshold speed is decreased in conformity with the vehicle body speed. This prevents the increase of the vehicle body speed toward the brake target threshold speed such that a vehicle accelerates regardless of a brake being in operation because the brake target threshold speed is set at a higher value than the vehicle body speed. Accordingly, the vehicle body speed decelerates by a simpler operation while being able to prevent the vehicle from accelerating against the intentions of a driver and being able to control the speed of the vehicle according to the intentions of the driver.
Abstract translation: 通过简单的操作，可以根据驾驶员的意图来控制车速。 当车体速度快速降低并且变得低于制动目标阈值速度时，制动目标阈值速度根据车体速度而减小。 由此，制动目标阈值速度设定为比车体速度更高的值，能够防止车体速度朝向制动目标阈值速度的增加，使得车辆加速而不管制动器是否在运转。 因此，能够通过简单的操作使车体速度减速，同时能够防止车辆抵抗驾驶员的意图而加速，并且能够根据驾驶员的意图来控制车辆的速度。
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公开(公告)号：US20210129815A1
公开(公告)日：2021-05-06
申请号：US17041486
申请日：2019-03-28
Applicant: ADVICS CO., LTD.
Inventor： Tomotaka ASANO , Takayuki YAMAMOTO , Yasuhito ISHIDA
Abstract: A braking control device for a vehicle includes a malfunction detector configured to detect a malfunction of a first stroke sensor or a second stroke sensor, a memory configured to store a first stroke and a second stroke, a stroke calculator for first calculation configured to calculate, from the first stroke and the second stroke, an average value for calculating a target deceleration before a malfunction is detected by the malfunction detector, a stroke calculator for second calculation configured to calculate, from the average value and the second stroke (first stroke), an additional value for calculating the target deceleration after the malfunction is detected, and a target deceleration setting circuit configured to set the target deceleration from the average value or the additional value.
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公开(公告)号：US20200290576A1
公开(公告)日：2020-09-17
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
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.
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公开(公告)号：US20190381978A1
公开(公告)日：2019-12-19
申请号：US16476702
申请日：2018-01-10
Applicant: ADVICS CO., LTD.
Inventor： Yasuhito ISHIDA , Takayuki YAMAMOTO
Abstract: This vehicle control system is provided with an input monitoring unit and a determination time changing unit. When a state in which first target data is not input to a second control unit continues for a first determination time or longer, the input monitoring unit determines the first target data to be in a non-input state. When a state in which second target data is not input to the second control unit continues for a second determination time or longer, the input monitoring unit determines the second target data to be in a non-input state. When the first target data is determined to be in a non-input state, the determination time changing unit shortens the second determination time.
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