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    CONTROLLING RATE OF ROTOR FEATHER BY SYSTEM SECONDARY TO PRIMARY BLADE ANGLE CONTROL SYSTEM
    2.
    发明公开
    CONTROLLING RATE OF ROTOR FEATHER BY SYSTEM SECONDARY TO PRIMARY BLADE ANGLE CONTROL SYSTEM 审中-公开

    公开(公告)号：US20240217649A1

    公开(公告)日：2024-07-04

    申请号：US18091581

    申请日：2022-12-30

    申请人： Pratt & Whitney Canada Corp.

    发明人： Jagoda Krzywon

    IPC分类号： B64C11/38 ,  B64C11/40 ,  F01D7/00 ,  F15B13/04 ,  F15B21/00

    CPC分类号： B64C11/385 ,  B64C11/40 ,  F01D7/00 ,  F15B13/04 ,  F15B21/005 ,  F05D2260/75

    摘要： The rotor control system includes a main control valve having an inlet for receiving liquid and an outlet for issuing liquid to a rotor pitch change actuator. The rotor control unit is configured to control flow of liquid from the inlet to the outlet to modify pitch angle of rotor blades. A feathering system with a first conduit connected in fluid communication with the outlet of the main control valve, a second conduit for fluid communication with the rotor pitch change actuator, and a drain conduit. The feathering system has a normal operation mode for supplying liquid from the main control valve to the rotor pitch change actuator by allowing flow through the feathering system from the first conduit to the second conduit. The feathering system has a feathering mode for controlling drainage from the rotor pitch change actuator to the drain conduit.

    CONSTRUCTION MACHINE AND CONTROL METHOD THEREOF
    3.
    发明公开
    CONSTRUCTION MACHINE AND CONTROL METHOD THEREOF 审中-公开

    公开(公告)号：US20230287650A1

    公开(公告)日：2023-09-14

    申请号：US18017728

    申请日：2021-07-22

    申请人： HYUNDAI DOOSAN INFRACORE CO., LTD.

    发明人： Byungil KANG

    IPC分类号： E02F3/43 ,  E02F9/22 ,  F15B1/04 ,  F15B13/04

    CPC分类号： E02F3/435 ,  E02F9/2203 ,  E02F9/2217 ,  E02F9/2296 ,  E02F9/2267 ,  E02F9/2275 ,  F15B1/04 ,  F15B13/04

    摘要： An embodiment of the present disclosure provides a construction machine, which includes a boom, the construction machine including a boom cylinder configured to move the boom upward or downward and includes a head side and a rod side, a boom regeneration valve configured to control a flow rate of a working fluid discharged from a head side of the boom cylinder, an operating device configured to generate an operating signal for operating the boom, an accumulator configured to store the working fluid discharged from the boom cylinder, a regeneration motor configured to produce renewable energy by performing a regenerative operation by using the working fluid discharged from the boom cylinder or the working fluid discharged from the accumulator, and a control device configured to correct an opening area of the boom regeneration valve on the basis of pressure of the accumulator when the boom descends.

    SYSTEMS AND METHODS FOR ACTUATING SOFT ROBOTIC ACTUATORS
    7.
    发明申请
    SYSTEMS AND METHODS FOR ACTUATING SOFT ROBOTIC ACTUATORS 有权
    用于执行软手动执行机构的系统和方法

    公开(公告)号：US20140208731A1

    公开(公告)日：2014-07-31

    申请号：US14243656

    申请日：2014-04-02

    申请人： President and Fellows of Harvard College

    发明人： Robert F. SHEPHERD ,  Adam STOKES ,  Stephen A. MORIN ,  Ludovico CADEMARTIRI ,  Jacob FREAKE ,  Rui NUNES ,  Xin CHEN ,  George M. WHITESIDES

    IPC分类号： F15B13/04

    CPC分类号： F15B13/04 ,  B25J9/1075 ,  B25J9/142

    摘要： Systems and methods for providing a soft robot is provided. In one system, a robotic device includes a flexible body having a fluid chamber, where a portion of the flexible body includes an elastically extensible material and a portion of the flexible body is strain limiting relative to the elastically extensible material. The robotic device can further include a pressurizing inlet in fluid communication with the fluid chamber, and a pressurizing device in fluid communication with the pressurizing inlet, the pressurizing device including a reaction chamber configured to accommodate a gas-producing chemical reaction for providing pressurized gas to the pressurizing inlet.

    摘要翻译： 提供了一种用于提供软机器人的系统和方法。 在一个系统中，机器人装置包括具有流体室的柔性主体，其中柔性主体的一部分包括弹性可伸展材料，并且柔性体的一部分相对于弹性可伸展材料是应变限制的。 机器人装置还可以包括与流体室流体连通的加压入口，以及与加压入口流体连通的加压装置，该加压装置包括反应室，该反应室被配置成容纳产生气体的化学反应，以将加压气体提供给 加压入口。

    NEUTRAL SETTING DEVICE FOR AN ADJUSTABLE HYDRAULIC MACHINE
    8.
    发明申请
    NEUTRAL SETTING DEVICE FOR AN ADJUSTABLE HYDRAULIC MACHINE 审中-公开
    用于可调式液压机的中性设定装置

    公开(公告)号：US20130174925A1

    公开(公告)日：2013-07-11

    申请号：US13737147

    申请日：2013-01-09

    申请人： SAUER-DANFOSS GmbH & Co. OHG

    发明人： Peter BAHNA ,  Sebastian BUJNA ,  Peter CHEBLANA ,  Miroslav CHMATIL ,  Michael KNAZEK ,  Reinhardt THOMS

    IPC分类号： F04B49/12

    CPC分类号： F04B49/12 ,  F15B13/04 ,  Y10T137/8593

    摘要： The invention relates to a neutral setting device of an adjustable hydraulic machine, in particular the adjustment of the neutral setting of a servo valve. The present invention relates in particular to servo adjustment devices with mechanically adjustable control pistons, wherein the necessary force can be applied mechanically, electromagnetically, pneumatically or hydraulically. The invention relates to a neutral setting device of an adjustable hydraulic machine with a housing in which a mounted input shaft is arranged, at which on one end a torque can be applied for turning the input shaft around an axis. On a second end a cylindrical extension is arranged eccentrically parallel to the axis. An adjustable control piston for opening and closing hydraulic fluid openings for application of pressure of a servo piston adjusts the hydraulic machine with respect to its delivery volume.

    摘要翻译： 本发明涉及一种可调节液压机械的中立设定装置，特别是调节伺服阀的中立设定。 本发明尤其涉及具有机械调节控制活塞的伺服调节装置，其中必要的力可以机械地，电磁地，气动地或液压地施加。 本发明涉及一种具有壳体的可调节液压机械的中立设定装置，其中安装有一个安装的输入轴，一端可以施加扭矩以使输入轴绕轴线转动。 在第二端，圆柱形延伸部偏心地布置成平行于轴线。 用于打开和关闭用于施加伺服活塞的压力的液压流体开口的可调控制活塞相对于其输送体积调节液压机。

    Pressure control valve having intrinsic mechanical feedback system
    9.
    发明授权
    Pressure control valve having intrinsic mechanical feedback system 有权
    具有内在机械反馈系统的压力控制阀

    公开(公告)号：US07509905B2

    公开(公告)日：2009-03-31

    申请号：US11977425

    申请日：2007-10-23

    申请人： Stephen C. Jacobsen ,  Shane Olsen ,  Michael Morrison

    发明人： Stephen C. Jacobsen ,  Shane Olsen ,  Michael Morrison

    IPC分类号： F15B13/04 ,  B60G17/005

    CPC分类号： F15B13/04 ,  F15B21/12 ,  F15B2211/50554 ,  F15B2211/525 ,  F15B2211/56 ,  F15B2211/565 ,  G05D16/166

    摘要： The present invention describes, generally, a method and system for controlling the dynamics of an actuatable load functioning or operable within a servo or servo-type system, wherein the dynamics of the load are controlled by way of a unique pressure control valve configured to provide intrinsic pressure regulation. The pressure control valve, which may be referred to as a dynamic pressure regulator because of its capabilities, utilizes dual spools that are physically independent of one another and freely supported in the valve body to regulate the pressures acting within the overall system between the control or pilot pressure and the load or load pressure. The dual spools of the pressure control valve, although physically independent of one another, function in cooperation with one another in an attempt to maintain a state of equilibrium in the system, namely to keep pressure acting on or within the actuator (the load pressure), or the feedback force corresponding to the load pressure, the same as the control or pilot pressure. Moreover, pressure regulation and control is intrinsic to the pressure control valve because of the configuration and function of the dual spools and the mechanical feedback system acting on the spools, thus eliminating the need for electronically or mechanically user controlled systems.

    摘要翻译： 本发明总体上描述了一种用于控制在伺服或伺服型系统中起作用或可操作的可启动负载的动力学的方法和系统，其中负载的动力学通过独特的压力控制阀来控制，该压力控制阀被配置成提供 内在压力调节。 压力控制阀由于其能力而被称为动态压力调节器，它利用双重线轴，它们在物理上彼此独立并且自由地支撑在阀体中，以调节在整个系统内作用在控制或控制之间的压力 先导压力和负载或负载压力。 压力控制阀的双线轴虽然在物理上彼此独立，但彼此配合起作用，以维持系统中的平衡状态，即保持作用在致动器上或其内的压力（负载压力） ，或与负载压力对应的反馈力，与控制或先导压力相同。 此外，由于双线轴和作用在线轴上的机械反馈系统的配置和功能，因此压力调节和控制是压力控制阀所固有的，因此无需电子或机械用户控制的系统。

    Pressure control valve having intrinsic feedback system
    10.
    发明授权
    Pressure control valve having intrinsic feedback system 有权
    具有内在反馈系统的压力控制阀

    公开(公告)号：US07308848B2

    公开(公告)日：2007-12-18

    申请号：US11293413

    申请日：2005-12-01

    申请人： Stephen C. Jacobsen ,  Shane Olsen ,  Michael Morrison

    发明人： Stephen C. Jacobsen ,  Shane Olsen ,  Michael Morrison

    IPC分类号： F15B13/04

    CPC分类号： F15B13/04 ,  F15B21/12 ,  F15B2211/50554 ,  F15B2211/524 ,  F15B2211/565 ,  F15B2211/76

    摘要： A method and system for controlling the dynamics of an actuatable load operable within a servo or servo-type system, wherein the dynamics of the load are controlled by way of a unique pressure control valve configured to provide intrinsic pressure regulation, thus eliminating the need for electronically or mechanically user controlled systems. The pressure control valve, which may be referred to as a dynamic pressure regulator, utilizes dual spools that are physically independent of one another and freely supported in the valve body to regulate the pressures acting within the overall system between the control or pilot pressure and the load or load pressure. The dual spools function in cooperation with one another to maintain a state of equilibrium in the system, namely to keep pressure acting on or within the actuator (the load pressure), or the feedback pressure corresponding to the load pressure, the same as the pilot pressure.

    摘要翻译： 一种用于控制在伺服或伺服型系统内可操作的可致动负载的动力学的方法和系统，其中负载的动力学通过独特的压力控制阀进行控制，该压力控制阀构造成提供固有的压力调节，从而消除了对 电子或机械用户控制的系统。 可被称为动态压力调节器的压力控制阀利用双重线轴，它们在物理上彼此独立并且自由地支撑在阀体中，以调节作用在整个系统内的控制或先导压力和 负载或负载压力。 双线轴彼此配合起作用，以保持系统中的平衡状态，即保持作用在执行机构上或其内部的压力（负载压力）或对应于负载压力的反馈压力，与导向装置相同 压力。