公开(公告)号：US20090125191A1

公开(公告)日：2009-05-14

申请号：US12269288

申请日：2008-11-12

申请人： Masakazu KURATA ,  Toshimitsu Sakaki ,  Mitsuo Sasaki ,  Tamotsu Yamaura ,  Mitsuaki Nakada ,  Kohei Ono ,  Eiji Kasai ,  Takatoshi Saito

发明人： Masakazu KURATA ,  Toshimitsu Sakaki ,  Mitsuo Sasaki ,  Tamotsu Yamaura ,  Mitsuaki Nakada ,  Kohei Ono ,  Eiji Kasai ,  Takatoshi Saito

IPC分类号： B62D5/06 ,  B62D6/04

CPC分类号： B62D5/065 ,  B62D5/064

摘要： A power steering apparatus includes a power cylinder; a reversible pump; first and second hydraulic passages; a reservoir tank; a first supply passage arranged to supply the hydraulic fluid through the reversible pump to the second hydraulic passage; a first one-way valve provided in the first supply passage; a second supply passage arranged to supply the hydraulic fluid through the reversible pump to the first hydraulic passage; and a second one-way valve provided in the second supply passage. A Reynolds number of a flow in the first one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the first one-way valve is maximum. A Reynolds number of a flow in the second one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the second one-way valve is maximum.

摘要翻译： 动力转向装置包括动力缸; 可逆泵 第一和第二液压通道; 储水箱; 第一供应通道，布置成通过可逆泵将液压流体供应到第二液压通道; 设置在第一供应通道中的第一单向阀; 第二供应通道，其布置成通过可逆泵将液压流体供应到第一液压通道; 以及设置在第二供给通道中的第二单向阀。 当第一单向阀中的每单位时间流量的流量最大时，第一单向阀中的流量的雷诺数等于或小于2300。 当第二单向阀中的流量每单位时间的流量最大时，第二单向阀中的流量的雷诺数等于或小于2300。

公开(公告)号：US20090125190A1

公开(公告)日：2009-05-14

申请号：US12269175

申请日：2008-11-12

申请人： Tatsuo Matsumura ,  Mitsuo Sasaki ,  Toru Takahashi ,  Kohei Ono ,  Eiji Kasai ,  Takatoshi Saito

发明人： Tatsuo Matsumura ,  Mitsuo Sasaki ,  Toru Takahashi ,  Kohei Ono ,  Eiji Kasai ,  Takatoshi Saito

IPC分类号： B62D5/06 ,  B62D6/00

CPC分类号： B62D5/065 ,  B62D5/0466

摘要： A power steering apparatus includes a power cylinder including first and second pressure chambers; a reversible pump including a first outlet port and a second outlet port; a first hydraulic passage including a portion made from an elastomer; a second hydraulic passage including a portion made from an elastomer; a motor arranged to drive the reversible pump; a motor control section; a pump reverse rotation judging section configured to judge a reverse rotation state of the reversible pump when an actual rotation direction of the reversible pump does not correspond to a direction in which the motor is rotated by the driving signal from the motor control section; and a damping torque adding section configured to damp a torque generated in the reversible pump when the pump reverse rotation judging section determines the reverse rotation state of the reversible pump.

摘要翻译： 一种动力转向装置，包括：动力缸，包括第一和第二压力室; 包括第一出口和第二出口的可逆泵; 第一液压通道，包括由弹性体制成的部分; 第二液压通道，包括由弹性体制成的部分; 布置成驱动可逆泵的马达; 电机控制部分; 泵反转判断部，被配置为当所述可逆泵的实际旋转方向与来自所述电动机控制部的驱动信号的所述电动机的转动方向不对应时，判断所述可逆泵的反转状态; 以及阻尼扭矩加法部，其构成为，当所述泵反转判断部确定所述可逆泵的反转状态时，抑制在所述可逆泵中产生的转矩。

公开(公告)号：US07863845B2

公开(公告)日：2011-01-04

申请号：US11994560

申请日：2006-05-09

申请人： Eiji Kasai ,  Yoichi Fujinori ,  Takatoshi Saito ,  Masaharu Yamashita ,  Ippei Yamazaki ,  Shuji Fujita

发明人： Eiji Kasai ,  Yoichi Fujinori ,  Takatoshi Saito ,  Masaharu Yamashita ,  Ippei Yamazaki ,  Shuji Fujita

IPC分类号： H02P1/00

CPC分类号： B62D5/046 ,  H02J1/08 ,  H02J2001/008

摘要： In a power supply apparatus, a power supply circuit includes a primary power supply circuit including a high-voltage battery and a step-down circuit for stepping down the voltage of the high-voltage battery, and a secondary power supply circuit including a low-voltage battery and a step-up circuit for stepping up the voltage of the low-voltage battery. The primary power supply circuit and the secondary power supply circuit are connected in parallel. An output voltage of the secondary power supply circuit is set to be lower than an output voltage of the primary power supply circuit. When the output voltage of the primary power supply circuit becomes lower than a target voltage of the secondary power supply circuit, the voltage stepped-up by the step-up circuit is supplied to a motor drive circuit. Accordingly, power supply backup of an electric power steering apparatus can be performed at low cost.

摘要翻译： 在电源装置中，电源电路包括：主电源电路，包括高压电池和降压电路，用于降低高压电池的电压;以及次级电源电路， 电压电池和升压电路，用于升压低压电池的电压。 主电源电路和副电源电路并联连接。 次级电源电路的输出电压被设定为低于主电源电路的输出电压。 当主电源电路的输出电压低于二次电源电路的目标电压时，由升压电路升压的电压被提供给电动机驱动电路。 因此，能够以低成本进行电动助力转向装置的供电备用。

公开(公告)号：US20090140673A1

公开(公告)日：2009-06-04

申请号：US11994560

申请日：2006-05-09

申请人： Eiji Kasai ,  Yoichi Fujinori ,  Takatoshi Saito ,  Masaharu Yamashita ,  Ippei Yamazaki ,  Shuji Fujita

发明人： Eiji Kasai ,  Yoichi Fujinori ,  Takatoshi Saito ,  Masaharu Yamashita ,  Ippei Yamazaki ,  Shuji Fujita

IPC分类号： H02P1/00

CPC分类号： B62D5/046 ,  H02J1/08 ,  H02J2001/008

摘要： In a power supply apparatus 40, a power supply circuit is formed by a primary power supply circuit 50 which includes a high-voltage battery 51 and a step-down circuit 55 for stepping down the voltage of the high-voltage battery 51, and a secondary power supply circuit 60 which includes a low-voltage battery 61 and a step-up circuit 70 for stepping up the voltage of the low-voltage battery 61. The primary power supply circuit 50 and the secondary power supply circuit 60 are connected in parallel. An output voltage of the secondary power supply circuit 60 is set to be lower than an output voltage of the primary power supply circuit 50. When the output voltage of the primary power supply circuit 50 becomes lower than a target voltage of the secondary power supply circuit 60, the voltage stepped-up by the step-up circuit 70 is supplied to a motor drive circuit 32. Accordingly, power supply backup of an electric power steering apparatus can be performed as low cost.

摘要翻译： 在电源装置40中，电源电路由主电源电路50形成，主电源电路50包括用于降压高压电池51的电压的高电压电池51和降压电路55， 二次电源电路60包括低电压电池61和用于升压低压电池61的电压的升压电路70.主电源电路50和二次电源电路60并联连接 。 次级电源电路60的输出电压被设定为低于主电源电路50的输出电压。当一次电源电路50的输出电压低于二次电源电路的目标电压 如图60所示，由升压电路70升压的电压被提供给电动机驱动电路32.因此，可以以低成本执行电动助力转向装置的供电备用。

公开(公告)号：US20110272205A1

公开(公告)日：2011-11-10

申请号：US12672321

申请日：2009-03-25

申请人： Masaki Fujimoto ,  Masaharu Yamashita ,  Kenichiro Aoki ,  Megumu Nishikohri ,  Akihiro Ohtomo ,  Eiji Kasai ,  Tsutomu Onagi ,  Keitaro Niki

发明人： Masaki Fujimoto ,  Masaharu Yamashita ,  Kenichiro Aoki ,  Megumu Nishikohri ,  Akihiro Ohtomo ,  Eiji Kasai ,  Tsutomu Onagi ,  Keitaro Niki

IPC分类号： B62D5/04 ,  B62D6/00 ,  B62D6/02

CPC分类号： B62D5/046 ,  B62D5/0466 ,  B62D5/0481 ,  H02M1/32 ,  H02P29/00 ,  H02P29/0241 ,  H02P29/64

摘要： An electric power steering device for a vehicle includes an estimation mechanism estimating if there is a possibility that a backward electric current flows in a booster circuit toward a vehicle battery device, and a boosting controller stopping the boosting operation of the booster circuit to prevent a backward electric current from flowing in the booster circuit when it is estimated that there is a possibility that a backward electric current flows by the estimation mechanism. The estimation mechanism estimates that there is a possibility that a backward electric current flows in the booster circuit when the steering condition of a steering wheel is a returning condition or a steering-held condition. Otherwise, the estimation mechanism estimates if a backward electric current flows on the basis of input and output voltages of the booster circuit and information on the switching of a first boosting switching element. Thereby, overheat of the booster circuit can be prevented.

摘要翻译： 一种用于车辆的电动助力转向装置，包括：估计机构，估计逆向电流是否在升压电路中朝向车辆电池装置流动，升压控制器停止升压电路的升压动作，以防止向后 当估计有可能通过估计机构流动的反向电流时，在升压电路中流动的电流。 估计机构估计当方向盘的转向条件是返回条件或转向保持状态时，有可能在升压电路中流过反向电流。 否则，估计机构基于升压电路的输入和输出电压以及关于第一升压开关元件的切换的信息来估计反向电流是否流动。 由此，可以防止升压电路的过热。

公开(公告)号：US07481294B2

公开(公告)日：2009-01-27

申请号：US11211759

申请日：2005-08-26

申请人： Shuji Fujita ,  Eiji Kasai ,  Ippei Yamazaki

发明人： Shuji Fujita ,  Eiji Kasai ,  Ippei Yamazaki

IPC分类号： B62D5/04

CPC分类号： B62D15/0245

摘要： The CPU calculates axial force matching external force that acts on a rack bar by combining steering torque MT that acts on a steering shaft with assist torque AT generated by an electric motor. The CPU then determines whether a vehicle is running straight based on a steering angle θ, a vehicle speed V, and the axial force F. Thus, even in a state where a control steering angle midpoint is deviated and a driver applies torque so as to return a turning position of a steering wheel to a neutral position, whether the vehicle is running straight can be accurately determined by making a determination by using the axial force F that acts on the rack bar. The CPU can set a considerably accurate control steering angle midpoint by calculating a smoothed steering angle midpoint by using an instantaneous steering angle midpoint in an accurately determined straight-running state.

摘要翻译： CPU通过将作用在转向轴上的转向转矩MT与由电动机产生的辅助扭矩AT相结合来计算作用在齿条上的轴向力匹配外力。 CPU然后基于转向角θ，车速V和轴向力F来确定车辆是否正在行驶。因此，即使在控制转向角中点偏离的状态下，驾驶员施加转矩，从而 通过使用作用在支架杆上的轴向力F来确定方向盘的转向位置，无论车辆是否直线行驶，都能够将方向盘的转向位置返回到中立位置。 通过在精确确定的直线运行状态下使用瞬时转向角中点来计算平滑的转向角中点，CPU可以设置相当精确的控制转向角中点。

公开(公告)号：US07406375B2

公开(公告)日：2008-07-29

申请号：US11852817

申请日：2007-09-10

申请人： Shuji Fujita ,  Eiji Kasai ,  Ippei Yamazaki ,  Junro Yamamoto ,  Yasunori Shintani ,  Hideo Kometani

发明人： Shuji Fujita ,  Eiji Kasai ,  Ippei Yamazaki ,  Junro Yamamoto ,  Yasunori Shintani ,  Hideo Kometani

IPC分类号： B62D5/04

CPC分类号： B62D5/0463 ,  B62D5/0484 ,  B62D5/049

摘要： When it is determined that the torque output from the electric motor abnormally fluctuates or the torque output from the electric motor varies between clockwise and counterclockwise turning operations of the driver's steering wheel, the steering assist control is continued if the vehicle speed v is equal to or lower than the reference speed v0. In this case, the width of the dead band of the steering torque in the assist map used to calculate the target assist torque is increased. Thus, only in a case where the vehicle is moving at a low speed and the driver's steering wheel is operated with a great force, the steering assist torque is produced to alleviate the burden on the driver. In the other cases, the electric motor is stopped to minimize a sense of discomfort in the steering operation.

摘要翻译： 当确定从电动机输出的转矩异常波动或从电动马达输出的转矩在驾驶员方向盘的顺时针和逆时针转动操作之间变化时，如果车速v等于或等于 低于参考速度v 0。 在这种情况下，用于计算目标辅助转矩的辅助图中的转向转矩的死区宽度增加。 因此，仅在车辆以低速移动并且驾驶员的方向盘以大的力进行操作的情况下，产生转向辅助转矩以减轻驾驶员的负担。 在其他情况下，停止电动马达以最小化转向操作中的不适感。

公开(公告)号：US5046495A

公开(公告)日：1991-09-10

申请号：US332925

申请日：1989-04-04

申请人： Noriyuki Takahashi ,  Jun Shimoyama ,  Eiji Kasai ,  Akitoshi Miki

发明人： Noriyuki Takahashi ,  Jun Shimoyama ,  Eiji Kasai ,  Akitoshi Miki

IPC分类号： A61N1/40

CPC分类号： A61N1/403

摘要： A high frequency heat therapy system, comprising: an applicator equipped with an electrode and a bolus bag; a high frequency generator unit for generating high frequency electric current that is to be applied to the electrode; a therapeutic table for adjustably supporting a patient; an applicator support unit for adjustably applying the applicator to the patient; a therapeutic data input unit for specifying therapeutic data including those related to positioning of the therapeutic table and the applicator support unit; a therapeutic data storage unit for storing therapeutic data including the data on positioning of the therapeutic table and the applicator; a drive control unit for drivingly controlling the therapeutic table and the applicator support unit according to the data on positioning of the therapeutic table and the applicator stored in the storage unit; and a central control unit for transmitting data stored in the therapeutic data storage unit and, if any, the therapeutic data specified by the therapeutic data input mean to the drive control unit. A high level of reproducibility can be achieved and the contributions of various therapeutic data can be evaluated in a rational way.

摘要翻译： 一种高频热疗系统，包括：装有电极和推注袋的涂抹器; 用于产生要施加到电极的高频电流的高频发生器单元; 用于可调节地支撑患者的治疗台; 施加器支撑单元，用于可调节地将施用器施加到患者身上; 治疗数据输入单元，用于指定治疗数据，其包括与治疗台和施用器支撑单元的定位相关的治疗数据; 治疗数据存储单元，用于存储包括治疗台和敷贴器的定位数据的治疗数据; 驱动控制单元，用于根据存储在存储单元中的治疗台和施用器的定位数据，驱动地控制治疗台和敷料器支撑单元; 以及中央控制单元，用于将存储在治疗数据存储单元中的数据以及（如果有的话）传送给治疗数据输入装置指定的治疗数据到驱动控制单元。 可以实现高水平的再现性，并且可以以合理的方式评估各种治疗数据的贡献。

公开(公告)号：US09461568B2

公开(公告)日：2016-10-04

申请号：US14127253

申请日：2012-07-02

申请人： Akihiro Tomita ,  Satoru Mikamo ,  Hiroshi Kawamura ,  Toshihiro Takahashi ,  Jun Hasegawa ,  Akira Nambu ,  Kenichiro Aoki ,  Eiji Kasai

发明人： Akihiro Tomita ,  Satoru Mikamo ,  Hiroshi Kawamura ,  Toshihiro Takahashi ,  Jun Hasegawa ,  Akira Nambu ,  Kenichiro Aoki ,  Eiji Kasai

IPC分类号： H02H7/08 ,  H02H7/122 ,  H02P6/12 ,  B62D5/04 ,  G01R31/327 ,  G01R31/02

CPC分类号： H02P6/12 ,  B62D5/0487 ,  G01R31/026 ,  G01R31/327 ,  H02P29/0241 ,  H02P29/0243

摘要： In a state in which the energization in the first direction is possible between the motor and the drive circuit and the motor is not rotating at high speed, when the phase induced voltage value of the specific phase that is the target of determination is continuously equal to or smaller than the abnormality determination threshold, the abnormality detecting unit determines that an open malfunction has occurred in the relay FET of the specific phase.

摘要翻译： 在电动机和驱动电路之间可能在第一方向上通电并且电动机不以高速旋转的状态下，当作为确定目标的特定相位的相感应电压值连续等于 或小于异常判定阈值的情况下，异常检测单元判定在特定相的继电器FET中发生了开路故障。

公开(公告)号：US20090259419A1

公开(公告)日：2009-10-15

申请号：US12089614

申请日：2006-10-19

申请人： Eiji Kasai

发明人： Eiji Kasai

IPC分类号： G01R31/36 ,  G06F19/00

CPC分类号： G01R31/3679 ,  B62D5/0481 ,  G01R31/006 ,  G01R31/3631

摘要： A battery condition diagnosis apparatus for a vehicle gradually supplies electricity to an electric motor of an electric power steering apparatus when a predetermined time elapses after an ignition switch is turned off. The apparatus diagnoses the deteriorated condition of the battery on the basis of the amount of supplied electricity and the detected battery voltage which changes in accordance therewith. The electric motor may be a brushless DC motor. In this case, current is supplied to the electric motor such that only d-axis armature current Id in the d-q coordinate system flows, to thereby prevent the electric motor from rotating, whereby safety is secured. Accordingly, the condition of the battery can be accurately diagnosed by supplying electricity to the electric motor without changing the condition of the vehicle.

摘要翻译： 当在点火开关断开之后经过预定时间时，用于车辆的电池状态诊断装置逐渐向电动转向装置的电动机供电。 该装置根据供电量和根据其变化的检测到的电池电压来诊断电池的劣化状况。 电动机可以是无刷直流电动机。 在这种情况下，电流被提供给电动机，使得只有d-q坐标系中的d轴电枢电流Id流动，从而防止电动机旋转，从而确保安全性。 因此，可以通过向电动机供电而不改变车辆的状况来准确地诊断电池的状况。