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公开(公告)号：US20170108067A1
公开(公告)日：2017-04-20
申请号：US15394112
申请日：2016-12-29
Applicant: NTN CORPORATION
Inventor： Yui MASUDA , Tatsuya YAMASAKI
CPC classification number: F16D65/18 , B60T1/005 , B60T13/74 , B60T13/741 , B60T17/18 , F16D55/225 , F16D55/226 , F16D63/006 , F16D65/183 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2127/02
Abstract: The electric brake device includes an electric motor, a brake rotor, a friction pad, a conversion mechanism, a braking force command section, a braking force estimation section, a controller, and a power supply device. The controller includes: a power determination section to determine whether an amount of remaining power that can be supplied from a power supply device to the electric motor has become equal to or less than a determined value; and a residual pressure cancellation section to cancel a residual pressure of a braking force by driving the electric motor in a direction opposite to a brake pressing direction such that an estimated value of the braking force obtained by the braking force estimation section becomes equal to or less than a set value, when the power determination section determines that the amount of remaining power has become equal to or less than the determined value.
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公开(公告)号：US20170066428A1
公开(公告)日：2017-03-09
申请号：US15356033
申请日：2016-11-18
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T17/22 , B60T13/74 , F16D55/225 , F16D66/00 , F16D65/18
CPC classification number: B60T17/221 , B60T13/74 , B60T13/741 , B60T17/18 , F16D55/225 , F16D65/18 , F16D66/00 , F16D2066/003 , F16D2066/005 , F16D2121/24 , G01L5/00 , H02P15/00
Abstract: Provided is an electric brake device that is able to achieve redundancy when an abnormality occurs in a load sensor, without increasing the size of the load sensor. The electric brake device includes a brake rotor, a friction pad, an electric motor, a transmission mechanism, braking force command section, braking force estimation section, motor rotation angle detector, and a controller. The braking force estimation section includes a load sensor configured to detect elastic deformation of a determined member forming the electric brake device. The controller includes sensor abnormality detector configured to store a sensor output of the load sensor at a motor rotation angle at which a braking force becomes zero, and infer the occurrence of plastic deformation in the load sensor from transition of the stored sensor output.
Abstract translation: 提供一种在不增加负载传感器的尺寸的情况下能够在负载传感器发生异常时实现冗余的电动制动装置。 电动制动装置包括制动转子，摩擦垫，电动机，变速机构，制动力指令部，制动力推定部，电动机旋转角度检测器和控制器。 制动力估计部包括：负载传感器，被构造成检测形成电动制动装置的确定部件的弹性变形。 控制器包括传感器异常检测器，其被配置为将负载传感器的传感器输出以制动力变为零的电动机旋转角度存储，并且根据存储的传感器输出的转变推断负载传感器中的塑性变形的发生。
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公开(公告)号：US20160178020A1
公开(公告)日：2016-06-23
申请号：US15056411
申请日：2016-02-29
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: F16D65/18 , F16D55/225
CPC classification number: F16D65/18 , B60T13/741 , F16D55/225 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/52
Abstract: An electric brake device that allows reduction of generation of an operating noise without impairing a function of a brake, is provided. The electric brake device includes a brake rotor, a brake pad, an electric motor, a linear motion mechanism, and a controller. The controller includes: a motor angular velocity control section configured to control an angular velocity of the electric motor; differential value calculator configured to calculate a differential value of a braking command value; and angular-velocity-corresponding-to-differential-value limiting section configured to limit the angular velocity of the electric motor by the motor angular velocity control section such that the less the differential value calculated by the differential value calculator is, the lower the angular velocity of the electric motor is.
Abstract translation: 提供了一种能够在不损害制动器的功能的情况下减少操作噪声的产生的电动制动装置。 电动制动装置包括制动转子，制动衬块，电动机，直线运动机构和控制器。 该控制器包括：电动机角速度控制部，被配置为控制电动机的角速度; 差分值计算器，被配置为计算制动指令值的差分值; 以及角速度对应差速值限制部，其被配置为通过所述电动机角速度控制部来限制所述电动机的角速度，使得由所述差分值计算器计算出的所述差分值越小，所述角度 电动机的速度是。
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公开(公告)号：US20160131212A1
公开(公告)日：2016-05-12
申请号：US14896050
申请日：2014-06-12
Applicant: NTN CORPORATION
Inventor： Tatsuya YAMASAKI , Makoto MURAMATSU , Yui MASUDA
IPC: F16D65/18 , F16H25/22 , F16H25/24 , F16D55/225
CPC classification number: F16D65/18 , F16D55/225 , F16D65/183 , F16D2121/24 , F16D2125/50 , F16H25/2252 , F16H25/2454 , H02K7/06 , H02K7/116
Abstract: The electric linear motion actuator includes an electric motor, a drive shaft configured to be rotated by the electric motor, a rotation-to-linear motion converting mechanism configured to convert the rotational motion of the drive shaft to the axial linear motion of an axially movably supported outer ring member, and an electric locking mechanism incorporated in a reduction gear mechanism in which the rotation of a rotor shaft of the electric motor is reduced in speed and transmitted to the drive shaft. When the electric locking mechanism is energized, the power transmission path shifts to the locked state in which power cannot be transmitted, and when the electric locking mechanism is de-energized thereafter, the power transmission path is kept in the locked state. The electric locking mechanism is built in a motor case of the electric motor so that the electric motor and the electric locking mechanism are unitized.
Abstract translation: 电动直线运动致动器包括电动机，构造成由电动机旋转的驱动轴;旋转到线性运动转换机构，其构造成将驱动轴的旋转运动转换成轴向可运动的轴向直线运动 以及电动锁定机构，其结合在减速齿轮机构中，其中电动机的转子轴的旋转速度降低并传递到驱动轴。 当电动锁定机构通电时，动力传递路径转移到不能传递动力的锁定状态，并且当电动锁定机构在此之后被断电时，动力传递路径保持在锁定状态。 电动锁定机构内置在电动机的电动机壳体中，使得电动机和电动锁定机构被组合。
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公开(公告)号：US20200031322A1
公开(公告)日：2020-01-30
申请号：US16499046
申请日：2018-03-29
Applicant: NISSIN KOGYO CO., LTD. , VEONEER NISSIN BRAKE SYSTEMS JAPAN CO., LTD. , MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA , NTN CORPORATION
Inventor： Hiromasa SATOH , Toshihiro OBIKA , Yusuke KOGA , Hiromitsu TOYOTA , Haruo KOTERA , Tatsuya YAMASAKI , Yui MASUDA
Abstract: A highly reliable vehicle brake system that includes an electric brake and achieves redundancy at low cost is provided.A vehicle brake system (1) is provided to a wheel (Wa) of a vehicle (VB), and includes an electric brake (16a) provided with a motor (80), a driver (60) that drives the motor (80), and a first control device (10) provided with a master controller (30) and a first sub-controller (40) connected to each other. The electric brake (16a) is controllable by both the master controller (30) and the first sub-controller (40).
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Patent Agency Ranking
公开(公告)号：US20190256062A1
公开(公告)日：2019-08-22
申请号：US16399334
申请日：2019-04-30
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T8/17 , H02P21/09 , H02P21/18 , H02P21/22 , H02P21/36 , B60T1/06 , B60T8/172 , B60T17/22 , B60T13/74 , F16D55/02 , F16D65/18
Abstract: The electric brake device includes a control device for performing follow-up control such that a braking force estimated value estimated by a braking force estimator follows a given braking force command value. The control device includes an angle-sensorless control function section for determining a phase of phase current of an electric motor irrespective of an actual angle of the electric motor and controlling the electric motor to have a current value that is based on the determined phase of the phase current. The angle-sensorless control function section includes a current phase determination section for determining a current phase that is the phase of the phase current of the electric motor on the basis of a deviation between the braking force command value and the braking force estimated value.
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公开(公告)号：US20190181789A1
公开(公告)日：2019-06-13
申请号：US16281529
申请日：2019-02-21
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: In this electric linear motion actuator, a linear motion mechanism and an electric motor are arranged in line along the same axis, which is an axis of a rotation input/output shaft of the linear motion mechanism. The electric motor includes a stator and a rotor which are arranged such that the directions of magnetic poles thereof for generating interlinkage magnetic flux contributing to a torque are parallel to a rotation shaft of a motor. The rotor has torque generating surfaces at both faces in the axial direction thereof. The stator has first and second excitation mechanisms arranged on both sides in the axial direction of the rotor. The first and second excitation mechanisms have independent first and second system coil groups. A power supply system for independently supplying power to the first and second system coil groups is provided.
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公开(公告)号：US20180201240A1
公开(公告)日：2018-07-19
申请号：US15918495
申请日：2018-03-12
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T8/1761 , B60T13/74 , B60T8/172 , B60T8/171 , B60T8/173
Abstract: Provided is an electric braking system configured to prevent antilock control from being unintentionally ended so that the braking behavior can be stabilized. An antilock control function unit includes an antilock control intervention determination unit configured to determine whether or not to execute antilock control. A braking force control device includes a switching function unit configured to switch between follow-up control by a normal control unit and the antilock control by the antilock control function unit on the basis of the determination by the antilock control intervention determination unit. The antilock control intervention determination unit ends execution of the antilock control when, for example, a braking force under the antilock control becomes equal to or higher than a required braking force while the antilock control is being executed.
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公开(公告)号：US20180134264A1
公开(公告)日：2018-05-17
申请号：US15869804
申请日：2018-01-12
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: The friction brake system includes a braking force distributor configured to output load command values to friction brake devices for a plurality of wheels, and a friction coefficient estimation calculation section configured to estimate a friction coefficient between a brake rotor and a friction material of each friction brake device. The friction coefficient estimation calculation section includes a distribution adjustment section configured to change distribution of brake pressing force to be distributed by the braking force distributor, for estimation of the friction coefficient, and an estimation calculation section configured to estimate the friction coefficient on the basis of a relationship between deceleration of a vehicle and the load command values the distribution of which is changed.
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公开(公告)号：US20180072289A1
公开(公告)日：2018-03-15
申请号：US15817905
申请日：2017-11-20
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T8/1761 , F16D65/18 , B60T13/74
CPC classification number: B60T8/1761 , B60T8/00 , B60T8/17 , B60T8/175 , B60T8/176 , B60T13/74 , B60T13/741 , F16D65/18 , F16D2121/24
Abstract: A brake integrated control section generates, as target values, a target braking force and a target wheel speed equivalent value of each electric brake device, and transmits the target braking force and the target wheel speed equivalent value to a target value transmitter. An electric brake control device of each electric brake device includes a braking force controller that controls an electric motor in accordance with the target braking force, a wheel speed controller that controls the electric motor in accordance with the target wheel speed equivalent value, and a control switcher. The control switcher switches between use of the braking force controller and use of the wheel speed controller in accordance with a predetermined condition.
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