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1. 发明申请

US20210265936A1 MOTOR CONTROL DEVICE AND ELECTRIC BRAKE DEVICE INCLUDING THE SAME 有权
公开(公告)号：US20210265936A1
公开(公告)日：2021-08-26
申请号：US17261642
申请日：2019-06-17
申请人： Hitachi Automotive Systems, Ltd.
发明人： Hiroaki SATO , Toshiyuki AJIMA , Kenichiro MATSUBARA , Daisuke GOTO
IPC分类号： H02P23/14 , B60T13/74 , B60T1/06 , F16D65/18 , H02P23/00 , H03H17/02 , H02P23/12
摘要： An object of the present invention is to provide a motor control device capable of estimating a delay with high accuracy even in a case where there is a fluctuation in disturbance torque or delay time and of suppressing the influence of the delay. For this end, the present invention includes a motor MTR, an ECU 2 that controls the rotation of the motor MTR, and an ECU 1 that sends a torque command to the ECU 2 based on a command value. The ECU 1 includes a disturbance estimation block 100 and a delay estimation block 200. The disturbance estimation block 100 estimates disturbance torque (τd) using a torque command input to the ECU 2 and a feedback value of the motor MTR. The delay estimation block 200 estimates a delay using a torque command output from the ECU 1, the feedback value of the motor MTR, and the disturbance torque (τd).

2. 发明申请

US20180186352A1 ACCELERATION/DECELERATION CONTROL APPARATUS 审中-公开
公开(公告)号：US20180186352A1
公开(公告)日：2018-07-05
申请号：US15740259
申请日：2016-06-08
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Daisuke GOTO
IPC分类号： B60T8/1769 , B60L15/20
CPC分类号： B60T8/1769 , B60L7/18 , B60L15/2009 , B60L15/2018 , B60L2250/26 , B60T8/00 , B60T8/17 , B60W30/18 , B60W30/182 , B60W2540/10 , B60W2540/12 , B60Y2200/91 , B60Y2200/92 , Y02T10/7258
摘要： An acceleration/deceleration control apparatus includes a mode switching portion configured to switch a normal mode of performing acceleration control in response to an operation on an accelerator pedal and also performing deceleration control in response to an operation on a brake pedal, and a one-pedal mode of performing both the acceleration control and the deceleration control in response to the operation on the accelerator pedal according to a switching operation performed by a driver. Where a mode is switched from the normal mode to the one-pedal mode, one-pedal instruction switching portion (35B) of the acceleration/deceleration control apparatus outputs such one-pedal acceleration/deceleration instruction value A(Xa) that a result of adding a non-one-pedal acceleration instruction value B1(Xb) for the one-pedal mode and a one-pedal acceleration instruction value Ab(Xa) for the one-pedal mode after the mode is switched matches non-one-pedal deceleration instruction value Bn(xb) for the normal mode before the mode is switched.

3. 发明申请

US20200377070A1 ELECTRIC BRAKE AND CONTROL DEVICE 审中-公开
公开(公告)号：US20200377070A1
公开(公告)日：2020-12-03
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
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.

4. 发明申请

US20160046274A1 BRAKE APPARATUS AND METHOD FOR DETECTING AIR IN PIPELINES OF THE BRAKE APPRATUS 审中-公开
标题翻译：制动器装置和检测制动器管路中的空气的方法
公开(公告)号：US20160046274A1
公开(公告)日：2016-02-18
申请号：US14778735
申请日：2014-03-26
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Makoto MATSUURA , Daisuke GOTO , Tohma YAMAGUCHI , Tatsuji OHKUBO
IPC分类号： B60T17/22 , B60T13/68 , B60T13/66
CPC分类号： B60T17/222 , B60T8/326 , B60T13/662 , B60T13/686 , B60T13/745 , B60T17/22
摘要： An ECU (19) outputs control signals to an electric booster (16) of a fluid-pressure generating device (5) and to an ESC (22). In this way, the establishment and cutting off of communication through pressure-increase control valves (29), (29′), (31), and (31′) of the ESC (22) are controlled to connect each of wheel cylinders (1) to (4) in turn to the master cylinder (8). In doing so, the electric booster (16) is controlled for each of the wheel cylinders (1) to (4) to measure a stroke of a piston (10), (11) of a master cylinder (8), or a volume of brake fluid proportional to the stroke of the piston (1C), (11), and a fluid pressure detected by fluid-pressure sensors (20) and (21). The fluid volume-pressure characteristic of each of the wheel cylinders (1) to (4) so determined is used for comparison to detect any atmospheric air in each pipeline.
摘要翻译： ECU（19）将控制信号输出到流体压力生成装置（5）的电动助力器（16）和ESC（22）。以这种方式，控制通过ESC（22）的增压控制阀（29），（29'），（31）和（31'）建立和切断通信，以连接每个轮缸（ 1）到（4）依次连接到主缸（8）。在这样做时，为每个轮缸（1）至（4）控制电动助力器（16），以测量主缸（8）的活塞（10），（11）的行程，或者容积与活塞（1C），（11）的行程成比例的制动液和由流体压力传感器（20）和（21）检测的流体压力。将如此确定的每个轮缸（1）至（4）的流体体积压力特性用于比较以检测每个管道中的任何大气。

5. 发明申请

US20140239861A1 Inverter Apparatus 有权
标题翻译：变频器
公开(公告)号：US20140239861A1
公开(公告)日：2014-08-28
申请号：US14192557
申请日：2014-02-27
申请人： Hitachi Automotive Systems, Ltd.
发明人： Toshiyuki AJIMA , Kimihisa FURUKAWA , Shigehisa AOYAGI , Tohma YAMAGUCHI , Daisuke GOTO , Masaki KASHIMA
IPC分类号： H02P6/10
CPC分类号： H02P6/10 , H02P27/085
摘要： An objective of the present invention is to improve current detection accuracy and to reduce noise of carrier frequency. A motor apparatus and a motor drive apparatus calculate motor currents Iu, Iv, and Iw using a DC bus current detected value Idc of an inverter and control a magnitude and a phase of an applied voltage of a motor to drive the motor. A carrier adjuster decreases a carrier frequency Fc of the inverter if a motor output is relatively larger and that increases the carrier frequency Fc of the inverter if the motor output is relatively smaller. A pulse shift adjuster shifts an interphase waveform of a PWM pulse according to the carrier frequency Fc.
摘要翻译：本发明的目的是提高电流检测精度并降低载频的噪声。电动机装置和电动机驱动装置使用逆变器的直流母线电流检测值Idc来计算电动机电流Iu，Iv，Iw，并控制电动机的施加电压的大小和相位来驱动电动机。如果电动机输出相对较大，则载波调节器降低逆变器的载波频率Fc，并且如果电动机输出相对较小，则增加逆变器的载波频率Fc。脉冲移位调整器根据载波频率Fc移位PWM脉冲的相间波形。

6. 发明申请

US20140095044A1 VEHICLE CONTROL APPARATUS AND BRAKE CONTROL APPARATUS 审中-公开
标题翻译：车辆控制装置和制动控制装置
公开(公告)号：US20140095044A1
公开(公告)日：2014-04-03
申请号：US14037832
申请日：2013-09-26
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Masayuki KIKAWA , Daisuke GOTO , Kentaro UENO , Toshiyuki INNAMI , Tatsuji OHKUBO
IPC分类号： B60T17/22
CPC分类号： B60T17/221 , B60T7/042 , B60T8/4077 , B60T13/146 , B60T13/662 , B60T13/686 , B60T13/745
摘要： A second ECU determines whether or not there is an abnormality in a hydraulic-pressure sensor in a first cycle based on a detection value of the hydraulic-pressure sensor, and outputs a signal indicating determination of occurrence of the abnormality to a first ECU via signal line when determining occurrence of the abnormality in the sensor. The first ECU receives the detection value of the hydraulic-pressure sensor through communication from the second ECU via the signal line to determine whether or not there is the abnormality in the hydraulic-pressure sensor in a second cycle shorter than the first cycle. When determining that the hydraulic-pressure sensor is abnormal, the first ECU controls driving of an electric actuator based on a braking command from an operation-amount detection sensor without using the detection value of the hydraulic-pressure sensor determined as abnormal.
摘要翻译：第二ECU基于液压传感器的检测值，判定第一循环中的液压传感器是否发生异常，并通过信号向第一ECU输出表示异常发生的判定的信号确定传感器异常发生时的线路。第一ECU经由信号线从第二ECU通过连接接收液压传感器的检测值，以确定液压传感器在比第一周期短的第二周期中是否存在异常。当确定液压传感器异常时，第一ECU基于来自操作量检测传感器的制动命令来控制电致动器的驱动，而不使用被确定为异常的液压传感器的检测值。

7. 发明申请

US20210197777A1 BRAKE SYSTEM 有权
公开(公告)号：US20210197777A1
公开(公告)日：2021-07-01
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 , B60T13/74 , B60T1/06 , B60T17/22
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.

8. 发明申请

US20200276964A1 ELECTRIC BOOSTER 审中-公开
公开(公告)号：US20200276964A1
公开(公告)日：2020-09-03
申请号：US16647651
申请日：2018-09-18
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Daisuke GOTO , Takuya USUI
IPC分类号： B60T13/74 , B60T13/04 , B60T7/12 , B60T7/04 , B60T13/10
摘要： A brake operation sensor detects a position of an input member. An angle sensor detects a position of a power piston. An ECU drives and controls an electric motor based on a relative position between the input member and the power piston. Then, the input member and the power piston are subjected to a mechanical limitation on a relative displacement therebetween due to abutment with each other at a step. The ECU advances/retracts the power piston independently of the movement of the input member, and determines the abutment state between the input member and the power piston under the mechanical limitation based on the detected relative position. Then, the ECU corrects the relative position between the input member and the power piston based on this determination to control the electric motor.

9. 发明申请

US20200223408A1 BRAKE APPARATUS, CONTROL APPARATUS FOR VEHICLE, AND ELECTRIC BRAKE CONTROL APPARATUS 审中-公开
公开(公告)号：US20200223408A1
公开(公告)日：2020-07-16
申请号：US16648330
申请日：2018-09-19
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Daisuke GOTO , Chiharu NAKAZAWA , Takahiro ITO
IPC分类号： B60T8/17 , B60T7/04 , F16D65/16 , B60T8/172 , B60T13/58 , B60T8/171 , B60T8/32 , B60T13/66 , B60T13/74 , B60T8/58
摘要： A brake apparatus including a hydraulic brake mechanism, an electric brake mechanism, and first and second controllers. The hydraulic brake mechanism can apply a braking force by thrusting a braking member forward with use of hydraulic pressure to a wheel belonging to a first group among a plurality of wheels of the vehicle. The electric brake mechanism can apply a braking force by thrusting a braking member forward with use of an electric motor to a wheel belonging to a second group among the plurality of wheels. The first controller can control the hydraulic brake mechanism, and the second controller can control the electric brake mechanism. The first controller acquires or receives at least one of yaw rate information of the vehicle and acceleration information of the vehicle without intervention of the second controller. The second controller acquires or receives wheel speed information without intervention of the first controller.

10. 发明申请

US20190315322A1 ELECTRIC BRAKE APPARATUS 审中-公开
公开(公告)号：US20190315322A1
公开(公告)日：2019-10-17
申请号：US16313588
申请日：2017-05-26
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Daisuke GOTO , Takuya USUI
IPC分类号： B60T8/17 , B60T13/74 , B60T8/40 , B60T7/04 , B60T7/12 , B60T13/66 , B60T8/171 , B60T8/172
摘要： Provided is an electric brake apparatus capable of accurately generating a desired braking hydraulic pressure. An ECU moves a power piston to cause a braking hydraulic pressure to be generated in a master cylinder by controlling an electric motor 37 of an electric actuator based on an operation on a brake pedal (an input member position). A characteristic correction processing portion of the ECU corrects, based on an operation amount of the brake pedal, characteristic data indicating a relationship between a hydraulic value transmitted from an ECU via a vehicle data bus and a movement amount of the power piston controlled based on the input member position, and stores it. The ECU controls the electric actuator based on the corrected characteristic data when an automatic brake instruction is input.

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