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    • 1. 发明授权
    • Rotation control device of working machine
    • 工作机械转动控制装置
    • US09103093B2
    • 2015-08-11
    • US13980607
    • 2012-01-19
    • Tsutomu UdagawaMitsuo SonodaManabu EdamuraTakenori HirokiManabu SugiuraTakako Satake
    • Tsutomu UdagawaMitsuo SonodaManabu EdamuraTakenori HirokiManabu SugiuraHidetoshi Satake
    • G06F7/70G06F19/00G06G7/00G06G7/76E02F9/12E02F9/20
    • E02F9/123E02F9/2095
    • To automatically prevent a reverse movement by inhibiting an excessive increase in an output torque of an electric motor.A means (31) calculates a target value for a rotation speed based on a command from a system (20), a means (32) calculates a deviation between a detection value from a rotation speed sensor (81) and the target value, a means (33) calculates a first target torque in a direction that the deviation will be eliminated, and a means (34) calculates, based on a command from the system (20), a second target torque in the same direction as the target value. A means (50) calculates a variation in a rotation angle of an electric motor (12) in a first range, and a means (60) calculates the same variation in a second range. A means (40) calculates, based on the variations from the means (50, 60), a third target torque in a direction that the rotation angle will return to a rotation angle before a predetermined time (t), and a means (73) limits the first target torque to one of the second and third target torques, said one target torque being in the same direction as the first target torque and being greater in absolute value. Substantially an entirety of the first range specifies a range for the variation in one direction, a remaining small range specifies a range for the variation in the other direction, substantially an entirety of the second range specifies a range for the variation in the other direction, and a remaining small range specifies a range for the variation in the one direction.
    • 通过抑制电动机的输出转矩的过度增加来自动地防止反向运动。 装置(31)基于来自系统(20)的命令计算转速的目标值,装置(32)计算来自转速传感器(81)的检测值与目标值之间的偏差, 装置(33)在偏移将被消除的方向上计算第一目标转矩,并且装置(34)基于来自系统(20)的命令,计算与目标值相同方向的第二目标转矩 。 装置(50)计算第一范围内的电动机(12)的旋转角度的变化,并且装​​置(60)在第二范围中计算相同的变化。 装置(40)基于来自装置(50,60)的变化,根据旋转角度将返回到预定时间(t)之前的旋转角度的方向,计算第三目标扭矩,以及装置 )将第一目标转矩限制为第二和第三目标转矩中的一个,所述一个目标转矩与第一目标转矩处于相同的方向,并且绝对值较大。 基本上第一范围的整体指定一个方向的变化的范围,剩余的小范围指定另一方向的变化的范围,基本上整个第二范围指定了另一方向的变化的范围, 剩下的小范围指定一个方向的变化范围。
    • 4. 发明申请
    • Rotation Control Device of Working Machine
    • 工作机械转动控制装置
    • US20140032059A1
    • 2014-01-30
    • US13980607
    • 2012-01-19
    • Takako Satake
    • Tsutomu UdagawaMitsuo SonodaManabu EdamuraTakenori HirokiManabu SugiuraHidetoshi Satake
    • E02F9/12
    • E02F9/123E02F9/2095
    • To automatically prevent a reverse movement by inhibiting an excessive increase in an output torque of an electric motor.A means (31) calculates a target value for a rotation speed based on a command from a system (20), a means (32) calculates a deviation between a detection value from a rotation speed sensor (81) and the target value, a means (33) calculates a first target torque in a direction that the deviation will be eliminated, and a means (34) calculates, based on a command from the system (20), a second target torque in the same direction as the target value. A means (50) calculates a variation in a rotation angle of an electric motor (12) in a first range, and a means (60) calculates the same variation in a second range. A means (40) calculates, based on the variations from the means (50, 60), a third target torque in a direction that the rotation angle will return to a rotation angle before a predetermined time (t), and a means (73) limits the first target torque to one of the second and third target torques, said one target torque being in the same direction as the first target torque and being greater in absolute value. Substantially an entirety of the first range specifies a range for the variation in one direction, a remaining small range specifies a range for the variation in the other direction, substantially an entirety of the second range specifies a range for the variation in the other direction, and a remaining small range specifies a range for the variation in the one direction.
    • 通过抑制电动机的输出转矩的过度增加来自动地防止反向运动。 装置(31)基于来自系统(20)的命令计算转速的目标值,装置(32)计算来自转速传感器(81)的检测值与目标值之间的偏差, 装置(33)在偏移将被消除的方向上计算第一目标转矩,并且装置(34)基于来自系统(20)的命令,计算与目标值相同方向的第二目标转矩 。 装置(50)计算第一范围内的电动机(12)的旋转角度的变化,并且装​​置(60)在第二范围中计算相同的变化。 装置(40)基于来自装置(50,60)的变化,根据旋转角度将返回到预定时间(t)之前的旋转角度的方向,计算第三目标扭矩,以及装置 )将第一目标转矩限制到第二和第三目标转矩中的一个,所述一个目标转矩与第一目标转矩处于相同的方向,并且绝对值较大。 基本上第一范围的整体指定一个方向的变化的范围,剩余的小范围指定另一方向的变化的范围,基本上整个第二范围指定了另一方向的变化的范围, 剩下的小范围指定一个方向的变化范围。
    • 7. 发明授权
    • Hydraulic drive system
    • 液压驱动系统
    • US5003776A
    • 1991-04-02
    • US378493
    • 1989-07-12
    • Takashi KanaiMasami OchiaiMorio OshinaMitsuo Sonoda
    • Takashi KanaiMasami OchiaiMorio OshinaMitsuo Sonoda
    • B60K17/10B60K25/04B60W10/06B60W30/18F16H59/14F16H61/42F16H61/433F16H61/46F16H61/465
    • B60W30/18B60W10/04B60W10/06B60W10/103F16H61/433F16H61/46F16H61/465
    • A hydraulic drive system is equipped with an engine, a plurality of hydraulic pumps adapted to be driven by the engine and including a variable displacement hydraulic pump provided with a displacement varying mechanism, a hydraulic motor connected to the variable displacement pump, a hydraulic actuator for actuating the displacement varying mechanism of the variable displacement hydraulic pump, a working fluid feeding means for feeding the hydraulic actuator with a hydraulic fluid of a pressure according to the degree of control of an accelerator lever which is adapted to instruct a target revolution number of the engine, and a low-pressure circuit for allowing the hydraulic fluid to be discharged therethrough from the hydraulic actuator. The system is provided with a maximum pressure limiting means for guiding the hydraulic fluid of the hydraulic fluid feeding means to the low-pressure circuit depending on the degree of control of the accelerator lever, thereby limiting the maximum pressure of the hydraulic fluid and a means for selectively actuating the maximum pressure limiting means.
    • 液压驱动系统配备有发动机,多个液压泵,其适于由发动机驱动,并且包括设置有位移变化机构的可变排量液压泵,连接到可变排量泵的液压马达,用于 致动可变排量液压泵的排量变化机构;工作流体供给装置,用于根据加速杆的控制程度向液压致动器供给压力的液压流体,该加速杆适于指示目标转数 发动机和用于允许液压流体从液压致动器排出的低压回路。 该系统设置有最大压力限制装置,用于根据加速杆的控制程度将液压流体供给装置的液压流体引导到低压回路,由此限制液压流体的最大压力和装置 用于选择性地启动最大压力限制装置。
    • 9. 发明授权
    • Motive power regeneration system for working machine
    • 工作机动力再生系统
    • US08659177B2
    • 2014-02-25
    • US13696671
    • 2012-01-20
    • Kazuo FujishimaMitsuo SonodaSeiji Hijikata
    • Kazuo FujishimaMitsuo SonodaSeiji Hijikata
    • F02D29/06
    • H02K7/1853E02F9/2075E02F9/2091E02F9/2217E02F9/2285F15B21/14F15B2211/353F15B2211/6654F15B2211/761
    • A motive power regeneration apparatus for a working machine includes a regeneration circuit that is connected to a hydraulic line through which a returning fluid of a boom cylinder is distributed during a boom lowering operation. Also included are a hydraulic motor connected to a generator, a flow regulating circuit that is connected to the hydraulic line and provided with a control valve, an inverter that controls the flow rate on the regeneration circuit in accordance with a first flow rate setting which varies with the operation amount of an operating apparatus, and a control valve and a proportional valve that control the flow rate on the flow regulating circuit in accordance with a second flow rate setting which varies with the operation amount of the operating apparatus. Therefore, the motive power regeneration apparatus is capable of making an operator constantly feel comfortable with the working machine operations.
    • 用于工作机械的动力再生装置包括再生回路,该再生回路连接到在动臂下降动作期间分配有动臂缸的返回流体的液压管路。 还包括连接到发电机的液压马达,连接到液压管路并设置有控制阀的流量调节电路,根据变化的第一流量设定来控制再生电路上的流量的逆变器 以及操作装置的操作量,以及根据随着操作装置的操作量而变化的第二流量设定来控制流量调节电路上的流量的控制阀和比例阀。 因此,动力再生装置能够使操作者对工作机械的操作感到舒适。