公开(公告)号：US20200080286A1

公开(公告)日：2020-03-12

申请号：US16564869

申请日：2019-09-09

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall James CALDWELL

IPC: E02F9/22 ,  F04B49/22

Abstract: A prime mover and a plurality of hydraulic actuators, a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers, a hydraulic circuit extending between working chambers of the hydraulic machine and the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold. The hydraulic machine being configured to actively control at least the low-pressure valves of the working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the working chambers, responsive to a demand signal.

公开(公告)号：US20230118844A1

公开(公告)日：2023-04-20

申请号：US17911110

申请日：2021-03-09

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall James CALDWELL ,  Daniil DUMNOV ,  Matthew GREEN ,  Stephen LAIRD ,  Jill MACPHERSON

IPC: F04B1/06 ,  F04B49/035 ,  F04B49/06 ,  F04B49/24

Abstract: A hydraulic apparatus including an electronically commutated machine having a plurality of working chambers which are controlled on each cycle of working chamber volume to carry out active or inactive cycles of working chamber volume allows only a plurality of defined fractions of cycles to be active cycles to avoid generating frequencies of active cycles which cause low frequency resonances. The demand signal may be quantised into fractions m/n where n is an integer below a threshold selected to avoid repeating patterns of active cycles of more than a cut-off length.

公开(公告)号：US20220356678A1

公开(公告)日：2022-11-10

申请号：US17864379

申请日：2022-07-13

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall James CALDWELL ,  Jill MACPHERSON ,  Matthew GREEN

IPC: E02F9/22 ,  F15B11/16 ,  F15B11/17 ,  F04B7/00

Abstract: A prime mover and hydraulic actuators, a hydraulic machine having a rotatable shaft engaged with the prime mover and having a plurality of working chambers, a hydraulic circuit extending between a group of working chambers of the hydraulic machine and the hydraulic actuators, each working chamber of the hydraulic machine having a low-pressure and a high-pressure valve regulating the flow of hydraulic fluid between the working chamber and a corresponding low-pressure manifold and a high-pressure manifold. The hydraulic machine controlling the low-pressure valves of the group of working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the group of working chambers, responsive to a demand signal, the apparatus further having a controller calculating the demand signal responsive to a measured property of the hydraulic circuit or an actuator.

公开(公告)号：US20200080551A1

公开(公告)日：2020-03-12

申请号：US16565002

申请日：2019-09-09

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall James CALDWELL ,  Matthew GREEN ,  Jill MACPHERSON

IPC: F04B49/22 ,  E02F9/22

Abstract: A prime mover and a plurality of hydraulic actuators, a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising working chambers, a hydraulic circuit between working chambers of the hydraulic machine and the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure and high-pressure valves regulating the flow of hydraulic fluid between the working chamber and a corresponding low-pressure manifold and a high-pressure manifold. The hydraulic machine being configured to actively control the low-pressure valves of the working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the working chambers, responsive to a demand signal, wherein the apparatus further comprises a controller configured to calculate the demand signal in response to a measured property of the hydraulic circuit or actuators.

公开(公告)号：US20170298928A9

公开(公告)日：2017-10-19

申请号：US14942567

申请日：2015-11-16

Applicant: Artemis Intelligent Power Limited

Inventor： Uwe Bernhard Pascal STEIN ,  Niall James CALDWELL ,  William Hugh Salvin RAMP EN ,  Jonathan Paul ALMOND

IPC: F04B49/22 ,  F04B49/06 ,  F04B49/12 ,  F01B25/10 ,  F04B7/00 ,  F04B49/24 ,  F04B53/10

CPC classification number: F04B49/225 ,  F01B25/10 ,  F04B7/0076 ,  F04B49/065 ,  F04B49/12 ,  F04B49/243 ,  F04B53/1082 ,  F04B2201/02 ,  F04B2201/0807

Abstract: A fluid-working machine has a plurality of working chambers, e.g., cylinders, of cyclically changing volume, a high-pressure fluid manifold and a low-pressure fluid manifold, at least one valve linking each working chamber to each manifold, and electronic sequencing means for operating said valves in timed relationship with the changing volume of each chamber, wherein the electronic sequencing means is arranged to operate the valves of each chamber in one of an idling mode, a partial mode in which only part of the usable volume of the chamber is used, and a full mode in which all of the usable volume of the chamber is used, and the electronic sequencing means is arranged to select the mode of each chamber on successive cycles so as to infinitely vary the time averaged effective flow rate of fluid through the machine.

公开(公告)号：US20170284388A1

公开(公告)日：2017-10-05

申请号：US15507964

申请日：2015-09-30

Applicant: Artemis Intelligent Power Limited

Inventor： Niall James CALDWELL ,  Jeremy EDMONDSON ,  Alasdair Ian Fletcher ROBERTSON ,  Uwe Bernhard Pascal STEIN

IPC: F04B49/22 ,  F15B7/00 ,  F04B1/06 ,  F15B21/14

CPC classification number: F04B49/22 ,  F03C1/26 ,  F04B1/06 ,  F04B1/063 ,  F04B49/225 ,  F15B7/00 ,  F15B7/006 ,  F15B11/0426 ,  F15B21/14 ,  F15B2211/2053 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/212 ,  F15B2211/214 ,  F15B2211/27 ,  F15B2211/30505 ,  F15B2211/327 ,  F15B2211/633 ,  F15B2211/6651 ,  F15B2211/6654 ,  F15B2211/7052 ,  F15B2211/7053 ,  Y02P80/13

Abstract: An injection moulding system, water jet cutting machine or other industrial system has a synthetically controlled variable displacement fluid working machine which outputs hydraulic fluid to one or more fluid consumers, such as rams or hydraulic motors, through hydraulically stiff fluid retaining volumes and receives hydraulic fluid back from one or more fluid consumers through the same or other said hydraulically stiff fluid retaining volumes. Individual piston cylinder assemblies can be allocated to different outputs. There may be no valve between the machine and the consumers. A working chamber of the machine can be caused to undergo a motoring cycle to enable the machine to output more power than is received from a motor driving the machine. An accumulator can be used to provide a source of hydraulic compliance. The machine can be controlled using pressure control, flow control, feed forward control or variable power/variable power limit control.

公开(公告)号：US20190071172A1

公开(公告)日：2019-03-07

申请号：US16121434

申请日：2018-09-04

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall James CALDWELL

IPC: B64C27/64 ,  B64C27/12 ,  B64C27/08

Abstract: A multi-rotor aerial vehicle comprises at 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 displacement of hydraulic fluid through each working chamber is regulated by electronically controllable valves, during each cycle of working chamber volume, in phased relationship to cycles of working chamber volume. The controller controls the electronically controllable valves of the electronically commutated hydraulic machines to independently control the rotation of the rotors. The shaft-driven hydraulic machine may be an electronically commutated machine with a plurality of independent outputs, which independently drive the rotor-driving hydraulic machines. The rotor-driving hydraulic machines may be electronically commutated machines the displacement of which is independently controlled to independently drive the rotors.

公开(公告)号：US20190048869A1

公开(公告)日：2019-02-14

申请号：US16138100

申请日：2018-09-21

Applicant: Artemis Intelligent Power Limited

Inventor： Uwe Bernhard Pascal STEIN ,  Niall James CALDWELL ,  William Hugh Salvin RAMPEN ,  Jonathan Paul ALMOND

IPC: F04B49/22 ,  F04B53/10 ,  F04B49/24 ,  F04B49/06 ,  F04B49/12 ,  F01B25/10 ,  F04B7/00

Abstract: A fluid-working machine has a plurality of working chambers, e.g., cylinders, of cyclically changing volume, a high-pressure fluid manifold and a low-pressure fluid manifold, at least one valve linking each working chamber to each manifold, and electronic sequencing means for operating said valves in timed relationship with the changing volume of each chamber, wherein the electronic sequencing means is arranged to operate the valves of each chamber in one of an idling mode, a partial mode in which only part of the usable volume of the chamber is used, and a full mode in which all of the usable volume of the chamber is used, and the electronic sequencing means is arranged to select the mode of each chamber on successive cycles so as to infinitely vary the time averaged effective flow rate of fluid through the machine.

公开(公告)号：US20180245609A1

公开(公告)日：2018-08-30

申请号：US15754786

申请日：2016-08-24

Applicant: Artemis Intelligent Power Limited

Inventor： Niall James CALDWELL ,  Uwe Bernhard Pascal STEIN

IPC: F15B19/00 ,  F15B21/08 ,  F03D17/00

CPC classification number: F15B19/005 ,  F03D17/00 ,  F04B49/06 ,  F04B49/08 ,  F04B51/00 ,  F05B2260/406 ,  F15B21/08

Abstract: A method of operating a hydraulic apparatus comprising a hydraulic circuit region and hydraulic machine which is controlled to displace pulses of fluid of known volume into or out of the hydraulic circuit region, generating pulses of pressure in the hydraulic circuit region and torque in the hydraulic machine shaft. The response of parts of the hydraulic apparatus to these pulses is measured and used to determine properties of the hydraulic apparatus. The response of the pressure in the hydraulic circuit region to pulses at different pressures can be used to measure the hydraulic stiffness of parts of the hydraulic circuit region. It is possible to detect faults and to make measurements useful in subsequent operation of the hydraulic apparatus.

公开(公告)号：US20160169222A1

公开(公告)日：2016-06-16

申请号：US14942567

申请日：2015-11-16

Applicant: Artemis Intelligent Power Limited

Inventor： Uwe Bernhard Pascal STEIN ,  Niall James CALDWELL ,  William Hugh Salvin RAMP EN ,  Jonathan Paul ALMOND

IPC: F04B49/22 ,  F01B25/10 ,  F04B49/12

CPC classification number: F04B49/225 ,  F01B25/10 ,  F04B7/0076 ,  F04B49/065 ,  F04B49/12 ,  F04B49/243 ,  F04B53/1082 ,  F04B2201/02 ,  F04B2201/0807

Abstract: A fluid-working machine has a plurality of working chambers, e.g., cylinders, of cyclically changing volume, a high-pressure fluid manifold and a low-pressure fluid manifold, at least one valve linking each working chamber to each manifold, and electronic sequencing means for operating said valves in timed relationship with the changing volume of each chamber, wherein the electronic sequencing means is arranged to operate the valves of each chamber in one of an idling mode, a partial mode in which only part of the usable volume of the chamber is used, and a full mode in which all of the usable volume of the chamber is used, and the electronic sequencing means is arranged to select the mode of each chamber on successive cycles so as to infinitely vary the time averaged effective flow rate of fluid through the machine.

Abstract translation: 流体加工机具有循环变化的体积的多个工作室，例如圆柱体，高压流体歧管和低压流体歧管，至少一个将每个工作室连接到每个歧管的阀以及电子排序 用于以与每个室的变化的体积定时关系来操作所述阀的装置，其中所述电子排序装置被布置成以空转模式，部分模式中的仅一部分可用体积的部分模式操作每个室的阀 使用腔室的全部模式，其中使用所有腔室的可用体积的全模式，并且电子排序装置被布置成在连续循环中选择每个腔室的模式，以便无限地改变时间平均有效流速 流体通过机器。