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    • 3. 发明申请
    • STEERING DEVICE
    • 转向装置
    • US20100121530A1
    • 2010-05-13
    • US12522603
    • 2007-12-28
    • Yoshiaki SuzukiShuji Fujita
    • Yoshiaki SuzukiShuji Fujita
    • G06F19/00B62D5/04
    • B62D5/0457B62D5/0475B62D5/0481
    • When the magnitude |ω| of a steering angular velocity ω is equal to or greater than a determination angular velocity ωth, an electric motor is estimated to be in a predetermined power use state, and a restriction determination threshold Vonth is set to a first voltage value V1 (S24). When the magnitude |ω| of the steering angular velocity ω is less than the determination angular velocity ωth, the restriction determination threshold Vonth is set to a second voltage value V2 (>V1) (S25). When a state in which a power supply voltage Vx is lower than the restriction determination threshold Vonth continues for a predetermined time t1 (S30: Yes), a power use restriction instruction is output to specific vehicle electrical loads. Thus, power restriction is properly imposed on the vehicle electrical loads, whereby a delay in control of the electric motor is prevented, and excessive imposition of power restriction is prevented.
    • 当幅度|ω|时 转向角速度ω等于或大于确定角速度ωth,则估计电动机处于预定功率使用状态,并将限制判定阈值Vonth设置为第一电压值V1(S24)。 当幅度|ω|时 转向角速度ω小于确定角速度ωth,将限制判定阈值Vonth设定为第二电压值V2(> V1)(S25)。 当电源电压Vx低于限制判定阈值Vonth的状态持续预定时间t1(S30:是)时,将电力使用限制指令输出到特定的车辆电气负载。 因此,对车辆电气负载适当地施加功率限制,由此防止电动机的控制延迟,并且防止了过度的功率限制。
    • 5. 发明申请
    • ELECTRIC POWER STEERING APPARATUS
    • 电动转向装置
    • US20080035411A1
    • 2008-02-14
    • US11836410
    • 2007-08-09
    • Masaharu YamashitaEiji KasaiIppei YamazakiShuji Fujita
    • Masaharu YamashitaEiji KasaiIppei YamazakiShuji Fujita
    • B62D5/04B62D6/00
    • B62D5/049B62D5/046B62D5/0463B62D5/0484
    • When it is determined that a malfunction has occurred in a rotational angle sensor, an electronic control unit changes the control manner from the normal assist control to the sensorless assist control. In the sensorless assist control, an assist stop command unit receives the information concerning the motor rotational angular speed ωm from an angular speed conversion unit. Then, the motor rotational angular speed ωm is compared with the threshold value ωm1. If the motor rotational angular speed ωm is equal to or higher than the threshold value ωm1, an assist enabling signal is transmitted to a PWM voltage production unit to continue the power assist. On the other hand, if the motor rotational angular speed ωm is lower than the threshold value ωm1, a stop command signal is transmitted to the PWM voltage production unit to stop the power assist.
    • 当确定在旋转角传感器中发生故障时,电子控制单元将控制方式从正常辅助控制改变为无传感器辅助控制。 在无传感器辅助控制中,辅助停止命令单元从角速度转换单元接收关于电动机旋转角速度ω的信息。 然后,将电机旋转角速度ωgam与阈值omega1进行比较。 如果电动机旋转角速度ωgam等于或高于阈值ω加1,则辅助使能信号被传送到PWM电压产生单元以继续动力辅助。 另一方面,如果电动机旋转角速度ωgam低于阈值ωgam1,则停止指令信号被发送到PWM电压产生单元以停止动力辅助。
    • 6. 发明授权
    • Sewing machine needle mounting device
    • 缝纫机针安装装置
    • US4989528A
    • 1991-02-05
    • US485622
    • 1990-02-27
    • Shuji Fujita
    • Shuji Fujita
    • D05B55/04
    • D05B55/04
    • A sewing machine needle mounting device includes a grip portion and a needle engaging portion. A vertical hole is vertically passed through the engaging portion. The hole may be configured in two shapes. One preferred configuration is an inversed cone which includes a substantially vertically extending ledge to fit within a thread guide of a sewing machine needle. Another preferred configuration is an inversed hemicone to engage with a flat surface of the sewing machine needle. The invention is useful for mounting needles to needle bars of both domestic and industrial sewing machines.
    • 缝纫机针安装装置包括握持部和针接合部。 垂直孔垂直穿过接合部分。 孔可以被配置成两种形状。 一个优选的构造是反转锥体,其包括基本上垂直延伸的凸缘,以装配在缝纫机针的导纱器内。 另一个优选的构造是与缝纫机针的平坦表面接合的反相半纤维素。 本发明用于将针安装在家用和工业缝纫机的针杆上。
    • 9. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US07694777B2
    • 2010-04-13
    • US11836410
    • 2007-08-09
    • Masaharu YamashitaEiji KasaiIppei YamazakiShuji Fujita
    • Masaharu YamashitaEiji KasaiIppei YamazakiShuji Fujita
    • B62D5/04
    • B62D5/049B62D5/046B62D5/0463B62D5/0484
    • When it is determined that a malfunction has occurred in a rotational angle sensor, an electronic control unit changes the control manner from the normal assist control to the sensorless assist control. In the sensorless assist control, an assist stop command unit receives the information concerning the motor rotational angular speed ωm from an angular speed conversion unit. Then, the motor rotational angular speed ωm is compared with the threshold value ωm1. If the motor rotational angular speed ωm is equal to or higher than the threshold value ωm1, an assist enabling signal is transmitted to a PWM voltage production unit to continue the power assist. On the other hand, if the motor rotational angular speed ωm is lower than the threshold value ωm1, a stop command signal is transmitted to the PWM voltage production unit to stop the power assist.
    • 当确定在旋转角传感器中发生故障时,电子控制单元将控制方式从正常辅助控制改变为无传感器辅助控制。 在无传感器辅助控制中,辅助停止命令单元从角速度转换单元接收关于电机旋转角速度ωm的信息。 然后,将电机旋转角速度ωm与阈值ωm1进行比较。 如果电动机旋转角速度ωm等于或高于阈值ωm1,则将辅助使能信号发送到PWM电压产生单元以继续电力辅助。 另一方面,如果电动机旋转角速度ωm低于阈值ωm1,则停止指令信号被发送到PWM电压产生单元以停止动力辅助。
    • 10. 发明申请
    • ELECTRIC POWER STEERING SYSTEM
    • 电力转向系统
    • US20090140673A1
    • 2009-06-04
    • US11994560
    • 2006-05-09
    • Eiji KasaiYoichi FujinoriTakatoshi SaitoMasaharu YamashitaIppei YamazakiShuji Fujita
    • Eiji KasaiYoichi FujinoriTakatoshi SaitoMasaharu YamashitaIppei YamazakiShuji Fujita
    • H02P1/00
    • B62D5/046H02J1/08H02J2001/008
    • 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.
    • 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。