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1. 发明授权

US11465599B2 Brake system and control method of brake system 有权
公开(公告)号：US11465599B2
公开(公告)日：2022-10-11
申请号：US16763806
申请日：2018-10-05
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takahiro Ito , Kenichiro Matsubara , Wataru Yokoyama , Daisuke Goto
IPC分类号： B60T8/17 , B60T8/172 , B60T8/32 , B60T8/171 , B60T13/68
摘要： A brake system capable of accurately controlling a braking force includes a first and second brake devices that have different control accuracies, and a brake control device that controls a braking force of the first and second braking devices according to a required braking force. The brake control device has a first control mode in which the braking force of the first brake device is controlled to be smaller than the braking force of the second brake device, and a second control mode in which the braking force of the first brake device is increased rather than the first control mode. The second brake device is controlled so that a sum of the braking force of the first brake device and the braking force of the second brake device matches the required braking force.

2. 发明授权

US09714014B2 Electric brake apparatus 有权
公开(公告)号：US09714014B2
公开(公告)日：2017-07-25
申请号：US14668172
申请日：2015-03-25
申请人： Hitachi Automotive Systems, Ltd. , Mazda Motor Corporation
发明人： Michiharu Okada , Shigeyuki Uehara , Kenji Hashida , Wataru Yokoyama , Kenichiro Matsubara
IPC分类号： B60T8/17 , B60T7/10 , B60T13/74 , B60T8/172 , B60T8/88 , F16D55/226 , F16D121/24
CPC分类号： B60T8/17 , B60T7/10 , B60T8/172 , B60T8/885 , B60T13/741 , B60T2270/402 , F16D55/226 , F16D2121/24
摘要： An electric brake apparatus includes an electric actuator configured to actuate a brake mechanism according to an actuation request signal, and an actuator controller configured to control an operation of the electric actuator with use of a power source mounted at a vehicle to perform control of holding and a release of braking by the brake mechanism. When a system recovers and the actuator controller detects that the control of the holding or the release has been interrupted with an uncompleted control state since system down occurred in the middle of the control of the holding or the release of the braking by the brake mechanism, the actuator controller maintains the interrupted state until a new actuation request signal is issued, and controls the operation of the electric actuator according to the content of the new actuation request signal.

3. 发明授权

US09457783B2 Brake system 有权
标题翻译：刹车系统
公开(公告)号：US09457783B2
公开(公告)日：2016-10-04
申请号：US14136340
申请日：2013-12-20
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Tomoyuki Kotake , Wataru Yokoyama , Kenichiro Matsubara
IPC分类号： B60T13/74 , B60T7/12 , F16D65/18 , F16D125/40
CPC分类号： B60T13/741 , B60T7/12 , F16D65/18 , F16D2125/40
摘要： A disk brake is configured as a brake apparatus provided with an electric parking brake function capable of holding braking of a vehicle by driving an electric actuator. A parking brake control apparatus, which controls the electric actuator, actuates the electric actuator so as to release holding of the braking upon determining that the vehicle is in a running state. More specifically, if a speed of the vehicle is maintained at a speed higher than 0 km/h for a predetermined time period, the parking brake control apparatus actuates a rotation/linear motion conversion mechanism by the electric actuator so as to release the holding of the piston of the disk brake.
摘要翻译：盘式制动器被配置为具有能够通过驱动电致动器来保持车辆制动的电动驻车制动功能的制动装置。控制电动执行器的停车制动控制装置致动电动致动器，以便在确定车辆处于运行状态时释放制动的保持。更具体地说，如果车辆的速度保持在高于0km / h的速度达预定时间段，则驻车制动控制装置通过电致动器致动旋转/线性运动转换机构，从而释放盘式制动器的活塞。

4. 发明授权

US10399553B2 Operating switch and parking brake control device 有权
公开(公告)号：US10399553B2
公开(公告)日：2019-09-03
申请号：US15755316
申请日：2016-08-26
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Hiroaki Kawai , Kenichiro Matsubara
IPC分类号： B60T17/22 , B60T7/04 , B60T7/08 , B60T7/14 , B60T7/10 , B60T8/88 , B60T13/74
摘要： An operating switch for commanding actuation of an electric parking brake mechanism includes two input terminals and two output terminals, a pair of two wirings for each input-terminal/output-terminal pair of the two input terminals and the two output terminals, each of the wirings being located between the input terminals and the two output terminals, a first switch element provided for the input terminals or the output terminals, and configured to switch connections to the two wirings, according to a command for the actuation, and a second switch element connected to one wiring of the two wirings that connects the input terminals and the output terminals when the command for the actuation given to the first switch element is set to a mode of non-operation. The second switch element is configured to switch connections to the two output terminals or the two input terminals, according to the command for the actuation.

5. 发明授权

US10232834B2 Brake device 有权
公开(公告)号：US10232834B2
公开(公告)日：2019-03-19
申请号：US15539841
申请日：2015-12-25
申请人： Mazda Motor Corporation , Hitachi Automotive Systems, Ltd.
发明人： Michiharu Okada , Shigeyuki Uehara , Tatsuro Kobune , Wataru Yokoyama , Kimio Nishino , Kenichiro Matsubara
IPC分类号： B60T13/00 , B60T8/1761 , B60T8/00 , B60T13/74 , B60T7/04 , B60T7/06 , F16D65/18 , F16D66/00 , F16D121/24 , F16D125/50 , B60T8/32
摘要： Provided is a brake device capable of maintaining pads and a rotor in a desired positional relationship. When receiving a release request within a time period from start of execution of an application request to detection of contact between brake pad and a disc rotor, a parking brake control device inhibits execution of the release request, and executes the release request after detection of the contact between the brake pad and the disc rotor. Further, when receiving the application request within a time period from start of execution of the release request to detection of separation between the brake pad and the disc rotor, the parking brake control device inhibits execution of the application request, and executes the application request after detection of the separation between the brake pad and the disc rotor.

6. 发明授权

US11958459B2 Brake system 有权
公开(公告)号：US11958459B2
公开(公告)日：2024-04-16
申请号：US17055515
申请日：2019-03-18
申请人： Hitachi Automotive Systems, Ltd.
发明人： Kyoshiro Itakura , Toshiyuki Ajima , Kenichiro Matsubara , Daisuke Goto
IPC分类号： B60T8/171 , B60T1/06 , B60T13/74 , B60T17/22
CPC分类号： B60T8/171 , B60T1/065 , B60T13/746 , B60T17/221
摘要： An object of the present invention is to appropriately control a clearance amount by correcting an estimation error of a contact position caused by a delay time difference between output signals of sensors, and to establish both improvement of fuel efficiency due to prevention of drag of a brake pad during non-braking and reduction in response time during braking.
A brake system includes a brake disc, a brake pad, a piston, a drive mechanism, a position sensor that detects a position of the piston, a thrust sensor that detects a thrust by which the brake pad presses the brake disc, and a brake control unit that adjusts a braking force by controlling the drive mechanism. The brake control unit includes a contact position computation unit that computes a contact position at which the brake pad and the brake disc come in contact with each other based on output signals of the position sensor and the thrust sensor, a position error computation unit that computes a position error of the contact position based on a delay time difference between the output signals of the position sensor and the thrust sensor, and a contact position correction unit that corrects the contact position obtained by the contact position computation unit by using the position error.

7. 发明授权

US11932224B2 Brake control device and brake system 有权
公开(公告)号：US11932224B2
公开(公告)日：2024-03-19
申请号：US17283914
申请日：2019-08-15
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Kyoshiro Itakura , Toshiyuki Ajima , Takahiro Ito , Kenichiro Matsubara , Daisuke Goto , Makoto Matsuura
IPC分类号： B60T8/00 , B60T1/00 , B60T8/172 , B60T13/74 , B60T17/22 , F16D65/14 , F16D65/18 , B60T1/06 , F16D66/00 , F16D121/24
CPC分类号： B60T8/172 , B60T13/746 , B60T17/221 , F16D65/183 , B60T1/065 , B60T2201/03 , F16D2066/005 , F16D2121/24
摘要： An object of the present invention is to provide a brake control device and a brake system capable of braking with a shortened braking response when shifting from non-braking to braking. A brake control device 10 includes a command value calculation unit 4 that calculates an operation command value required to make a pressing force by which a brake pad 11a is pressed against a brake disc 11b reach a target thrust value. The command value calculation unit 4 includes: a clearance command calculation unit 43 that calculates a command value required for contact between the brake pad 11a and the brake disc 11b; and a thrust command calculation unit 40 that calculates a command value required for reaching the target thrust from a state where the brake pad 11a and the brake disc 11b are in contact with each other. When calculating the operation command value from a state where the brake pad 11a and the brake disc 11b are separated, the command value calculation unit 4 calculates the operation command value by integrating the command value calculated from the clearance command calculation unit 43 and the command value calculated from the thrust command calculation unit 40.

8. 发明授权

US11926296B2 Electric brake and control device 有权
公开(公告)号：US11926296B2
公开(公告)日：2024-03-12
申请号：US16970829
申请日：2019-02-13
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Wataru Yokoyama , Daisuke Goto , Kenichiro Matsubara
IPC分类号： B60T13/74 , B60T1/06 , B60T8/17 , B60T17/22 , F16D55/226 , F16D65/18 , F16D121/24 , F16D125/40
CPC分类号： B60T13/746 , B60T1/065 , B60T8/17 , B60T17/221 , F16D55/226 , F16D65/18 , B60T2270/40 , B60T2270/406 , F16D2121/24 , F16D2125/40
摘要： An electric brake comprises a brake mechanism that transmits a thrust generated by driving an electric motor to a piston that moves brake pads pressed against a disc rotor; a thrust sensor that detects the thrust applied to the piston; a rotation angle sensor that detects a rotational position of the electric motor; and a rear electric brake ECU that controls the driving of the electric motor on the basis of a braking command. The rear electric brake ECU detects an abnormality in the brake mechanism from a detected value of the thrust sensor and a detected value of the rotation angle sensor in response to the braking command which are obtained when the electric motor is driven.

9. 发明授权

US10442413B2 Brake control apparatus 有权
公开(公告)号：US10442413B2
公开(公告)日：2019-10-15
申请号：US15560290
申请日：2016-03-22
申请人： Hitachi Automotive Systems, Ltd.
发明人： Yuki Tanaka , Wataru Yokoyama , Kimio Nishino , Masayoshi Okamiya , Kenichiro Matsubara
IPC分类号： B60T8/172 , B60T13/74 , B60T13/58 , F16D55/226 , F16D65/18 , F16D121/04 , F16D121/14 , F16D121/24 , F16D125/40 , F16D125/08
摘要： A parking brake control apparatus 20 drives an electric motor 43B to advance a piston 39 according to an application request signal from a parking brake switch 19. The parking brake control apparatus 20 includes a running state detection portion that calculates a running state about whether a vehicle is running or stopped based on a wheel signal from a wheel speed sensor 18. When the running state cannot be calculated by the running state detection portion, the parking brake control apparatus 20 controls the electric motor 43B in such a manner that the thrust force of the piston 39 changes at a lower time rate of change than when the running state can be calculated.

10. 发明授权

US09434368B2 Brake apparatus 有权
标题翻译：制动装置
公开(公告)号：US09434368B2
公开(公告)日：2016-09-06
申请号：US14458528
申请日：2014-08-13
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Tomohiro Ohara , Wataru Yokoyama , Kenji Hashida , Kimio Nishino , Kenichiro Matsubara
IPC分类号： B60T13/74 , B60T13/66 , B60T7/04 , B60T7/10 , F16D65/18 , F16D66/00 , F16D121/02 , F16D121/24 , F16D125/40 , F16D125/48
CPC分类号： B60T13/741 , B60T7/042 , B60T7/107 , B60T7/108 , B60T13/662 , F16D65/18 , F16D2066/001 , F16D2066/005 , F16D2121/02 , F16D2121/24 , F16D2125/40 , F16D2125/48
摘要： When a controller (19) is restarted after system control has ended, a brake apparatus drives an electric motor (43) so as to achieve a corrected target thrust force calculated by setting a greater thrust force than a target thrust force set according to a temperature estimated value of a frictional member at this time, based on the temperature estimated value of the frictional member at the time of the end of the control, or drives the electric motor based on the temperature estimated value of the frictional member at the time of the end of the control.
摘要翻译：当在系统控制结束后重新启动控制器（19）时，制动装置驱动电动机（43），以便通过设定比根据温度设定的目标推力设定更大推力而计算出的校正目标推力此时的摩擦部件的估计值基于摩擦部件在控制结束时的温度推定值，或者根据摩擦部件的温度推定值来驱动电动机结束控制。

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