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    MEASURING HYDRAULIC FLUID PRESSURE IN A FLUID-WORKING MACHINE
    3.
    发明公开
    MEASURING HYDRAULIC FLUID PRESSURE IN A FLUID-WORKING MACHINE 审中-公开

    公开(公告)号：EP3486482A1

    公开(公告)日：2019-05-22

    申请号：EP17202461.4

    申请日：2017-11-17

    申请人： Artemis Intelligent Power Limited

    发明人： BRETT, Mark ,  MCCURRY, Peter

    IPC分类号： F04B7/00 ,  F04B49/06 ,  F04B53/10

    摘要： A measurement of the pressure of hydraulic fluid in a fluid working machine can be determined from the timing of the movement of valves which selectively seal a working chamber of cyclically varying volume from a fluid gallery. The timing of opening of a low pressure valve, to connect a working chamber to a low pressure fluid gallery, following the closure of a high pressure valve to seal a working chamber can be used to estimate the pressure in the high pressure fluid gallery at the moment of closure of the high pressure valve.

    HYDRAULIC MULTI-ROTOR AERIAL VEHICLE
    4.
    发明公开
    HYDRAULIC MULTI-ROTOR AERIAL VEHICLE 审中-公开

    公开(公告)号：EP3450312A1

    公开(公告)日：2019-03-06

    申请号：EP18188797.7

    申请日：2018-08-13

    申请人： Artemis Intelligent Power Limited

    发明人： CALDWELL, Niall

    IPC分类号： B64C39/02 ,  B64D35/00 ,  B64C27/00 ,  B64C27/52

    摘要： A multi-rotor aerial vehicle comprises least two rotors, a controller, a power supply having an output shaft, a shaft-driven hydraulic machine coupled to the output shaft and at least two rotor-driving hydraulic machines coupled to respective rotors. At least one of the hydraulic machines is an electronically commutated hydraulic machine in which the displacement of hydraulic fluid through each working chamber is regulated by one or more electronically controllable valves, during each cycle of working chamber volume, in phased relationship to cycles of working chamber volume. The controller controls the one or more electronically controllable valves of each of the electronically commutated hydraulic machines to independently control the rotation of the rotors. It may be that the shaft-driven hydraulic machine is an electronically commutated machine with a plurality of independent outputs, which independently drive the rotor-driving hydraulic machines. It may be that the rotor-driving hydraulic machines are electronically commutated machines the displacement of which is independently controlled to independently drive the rotors.

    Fluid-working machine valve timing
    5.
    发明授权
    Fluid-working machine valve timing 有权

    公开(公告)号：EP2775144B1

    公开(公告)日：2018-09-26

    申请号：EP14162967.5

    申请日：2011-02-23

    申请人： ARTEMIS INTELLIGENT POWER LIMITED

    发明人： Rampen, William Hugh Salvin ,  Stein, Uwe Bernhard Pascal ,  Caldwell, Niall James ,  Laird, Stephen Michael ,  Joly, Pierre Robert ,  Fielding, Michael Richard ,  Dumnov, Daniil Sergeevich

    IPC分类号： F04B49/22 ,  F04B51/00

    CPC分类号： F04B49/22 ,  F04B51/00 ,  Y10T29/49236

    摘要： A fluid-working machine has a working chamber of cyclically varying volume, high and low pressure manifolds, and high and low pressure valves for regulating the flow of fluid between the working chamber and the high and low pressure manifolds respectively. A controller actively controls at least one said valve to determine the net displacement of working fluid of the working chamber on a cycle by cycle basis. At least one said valve is a variable timing valve and the controller causes the valve to open or close at a time determined taking into account one or more properties of the performance of the fluid working machine measured during an earlier cycle of working chamber volume. Properties of the opening or closing of a monitored valve may be taken into account. The variably timed valve may therefore be opened or closed at an optimum time to achieve efficient and reliable operation of the fluid-working machine. The magnitude of the opening or closing force applied to a valve member may also be varied.

    Controller for a hydraulic pump
    8.
    发明公开
    Controller for a hydraulic pump 有权
    Steuerungfüreine Hydraulikpumpe

    公开(公告)号：EP3009675A1

    公开(公告)日：2016-04-20

    申请号：EP14188683.8

    申请日：2014-10-13

    申请人： Danfoss Power Solutions GmbH & Co. OHG ,  Artemis Intelligent Power Limited

    发明人： Dole, Alexis ,  Stein, Uwe Bernhard Pascal ,  Kuttler, Onno

    IPC分类号： F04B1/06 ,  F01B1/06 ,  F04B49/00 ,  F04B49/22

    摘要： A hydraulic pump (6) comprising: a housing (20) having first and second inlets (100a, 100b) and first and second outlets (102a, 102b); a crankshaft (4) extending within the housing (20) and having axially offset first and second cams (62, 64); first and second groups (30, 32) of piston cylinder assemblies provided in the housing (20), each of the said groups (30, 32) having a plurality of piston cylinder assemblies having a working chamber of cyclically varying volume and being in driving relationship with the crankshaft (4); one or more electronically controllable valves (40) associated with the first and second groups (30, 32); and a controller (70) configured to actively control the opening and/or closing of the said electronically controllable valves (40) on each cycle of working chamber volume to thereby control the net displacement of fluid by the first and second groups (30, 32), wherein at least the first group (30) comprises a first piston cylinder assembly in driving relationship with the first cam (62) and a second piston cylinder assembly in driving relationship with the second cam (64), and wherein the first group is configured to receive working fluid from the first inlet (100a) and to output working fluid to the first outlet (102a) and the second group is configured to receive working fluid from the second inlet (100b) and to output working fluid to the second outlet (102b).

    摘要翻译： 一种液压泵（6），包括：具有第一和第二入口（100a，100b）和第一和第二出口（102a，102b）的壳体（20） 在壳体（20）内延伸并具有轴向偏移的第一和第二凸轮（62,64）的曲轴（4）; 设置在壳体（20）中的活塞气缸组件的第一和第二组（30,32），每个所述组（30,32）具有多个活塞气缸组件，所述多个活塞气缸组件具有周期性变化的体积的工作室， 与曲轴（4）的关系; 与第一组和第二组（30,32）相关联的一个或多个电子可控阀（40）; 以及控制器（70），被配置为在每个工作室容积循环上主动地控制所述电子可控阀（40）的打开和/或关闭，从而控制由第一组和第二组（30,32） ），其中至少第一组（30）包括与第一凸轮（62）驱动关系的第一活塞气缸组件和与第二凸轮（64）驱动关系的第二活塞气缸组件，并且其中第一组是 ，其被配置为从所述第一入口（100a）接收工作流体并将工作流体输出到所述第一出口（102a），并且所述第二组构造成从所述第二入口（100b）接收工作流体并将工作流体输出到所述第二出口 （102B）。

    Hydraulic transmission
    10.
    发明公开
    Hydraulic transmission 有权
    Hydraulikgetriebe

    公开(公告)号：EP2851562A1

    公开(公告)日：2015-03-25

    申请号：EP14170469.2

    申请日：2014-05-29

    申请人： MITSUBISHI HEAVY INDUSTRIES, LTD. ,  Artemis Intelligent Power Limited

    发明人： Ohira, Takeo ,  Ichinose, Hidekazu ,  Caldwell, Niall

    IPC分类号： F03D11/02 ,  F16H61/4183

    CPC分类号： F16H61/4183 ,  F03D9/25 ,  F03D15/00 ,  F03D15/20 ,  F05B2260/406 ,  Y02E10/722 ,  Y02E10/726

    摘要： A hydraulic transmission comprising a variable displacement pump and motor, at least one of which has cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a controller which determines a displacement of the pump and the motor. The displacement of the pump and/or motor is controlled to avoid the pump and/or motor generating vibrations with frequencies which correspond to resonant frequencies of portions of a machine which are part of or in mechanical communication with the hydraulic transmission and which arise from the pattern of active and inactive cycles of cylinder working volume, taking into account the speed of rotation of the rotatable shaft of the pump and/or motor.

    摘要翻译： 一种液压变速器，包括可变排量泵和电动机，其中至少一个具有气缸，所述气缸具有可在气缸工作体积的每个循环上控制的阀，以确定气缸的工作流体的净位移。 变速器具有控制器，该控制器确定泵和电动机的位移。 控制泵和/或电动机的位移以避免泵和/或电动机产生具有对应于机械部分的谐振频率的振动的振动，这些部分与液压变速器的一部分或与机械连通的液压变速器的共振频率产生， 考虑到泵和/或电动机的可旋转轴的旋转速度，气缸工作容积的有效和无效循环的模式。