EP4123174A1 - Commande de rétroaction de pression de pompe volumétrique et procédé de commande - Google Patents

Commande de rétroaction de pression de pompe volumétrique et procédé de commande Download PDF

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Publication number
EP4123174A1
EP4123174A1 EP22186434.1A EP22186434A EP4123174A1 EP 4123174 A1 EP4123174 A1 EP 4123174A1 EP 22186434 A EP22186434 A EP 22186434A EP 4123174 A1 EP4123174 A1 EP 4123174A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
motor
command
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22186434.1A
Other languages
German (de)
English (en)
Inventor
Ryan SHOOK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hamilton Sundstrand Corp
Original Assignee
Hamilton Sundstrand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hamilton Sundstrand Corp filed Critical Hamilton Sundstrand Corp
Publication of EP4123174A1 publication Critical patent/EP4123174A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F01D17/06—Arrangement of sensing elements responsive to speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/003—Arrangements for testing or measuring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/07—Pressure difference over the pump

Definitions

  • the present disclosure relates to a method of controlling a positive displacement pump, and specifically to controlling a pump using a pressure differential.
  • Positive displacement pumps produce large parasitic losses in air breathing engine fluid systems.
  • pumps are controlled based on their mechanical linkage to engine speed and are sized for to meet extreme conditions which are rarely reached or operated at. This leads to oversizing, which then requires other oversized components and unneeded flow capacity in the vast majority of operational conditions. This unneeded flow is a source of parasitic losses within an engine environment. While conventional design, operation, and sizing methods have generally been considered satisfactory for their intended purpose, there is still a need in the art for improved pump controls and sizing methods. The present disclosure provides a solution for this need.
  • a method of controlling a pump includes monitoring a supply pressure of a pump, monitoring an outlet pressure of the pump, and commanding a motor to drive the pump at a speed based on a comparison of the supply pressure and the outlet pressure of the pump, where the pump is a positive displacement pump and the motor is an electric motor.
  • the method can include receiving an initial pressure command from an engine controller. Commanding the motor can include changing a speed of the motor in response to a change from the initial pressure command from the engine controller and/or a change in differential pressure between the supply pressure and the outlet pressure.
  • the monitored pressures can be sent as electrical signals directly to a motor controller to electrical and directly sent back to the motor controller command the motor to drive the pump.
  • the method can also include actuating a stator vane of an aircraft based on an increased or decreased pressure from the pump.
  • a system for operating the method described above includes a motor, a pump operatively coupled to the motor to be driven by the motor, wherein the pump includes an input side and an output side, a pressure sensor to monitor a pressure difference between the input side and output side of the pump, and a motor controller to command the motor based on the detected pressure difference across the pump and monitor the pressure sensor.
  • the motor controller can be operatively coupled to an engine controller, where the engine controller can be configured to provide a pressure command to the motor controller based on power required to accomplish an actuation task.
  • the pressure sensor can be configured to measure supply pressure and outlet pressure of the pump.
  • the pressure sensor can include a first pressure sensing element located on a supply side of the pump, and a second pressure sensing element located on an output side of the pump.
  • the pressure sensor can be a differential pressure sensor. It is also considered that the pressure sensor can include two independent sensors wherein each of the two independent sensors is configured to measure absolute pressure.
  • the system can be part of an actuation system of an aircraft for actuating a stator vane or other air guiding element.
  • the motor controller used in the method includes non-transitory computer readable medium comprising computer executable instructions to execute the steps of the method described above.
  • the motor controller can be configured to receive a pressure command from the engine controller to produce power required to accomplish an actuation task, wherein the engine controller can also be responsible for controlling an aircraft engine.
  • FIG. 1 is a schematic depiction of a pump motor controller in accordance with the disclosure.
  • FIG. 1 a schematic view of an exemplary embodiment of a system for controlling a pump based on a pressure difference between an input and output pressure on the pump in accordance with the disclosure is shown in FIG. 1 and is designated generally by reference character 100.
  • the system and methods described herein allow for engine actuation systems to only consume power needed to accomplish an actuation task based on instant operational constraints, instead of depending on unrelated engine speed relationships, making for more efficient systems.
  • the system 100 is part of an aircraft actuation system coupled to an aircraft engine, and is considered to be useful in both an actuation system and a main fuel pump application. Any system where a pressure needs to be manipulated to influence system functionality can benefit from this architecture.
  • the system 100 includes a motor 102, a pump 104 operatively coupled to and controlled by the motor 102.
  • the motor 102 is an electric motor
  • the pump 104 is a positive displacement pump.
  • a pressure sensor having a pair of sensing elements 106a, 106b is used to monitor the pressure difference across pump 104.
  • One pressure sensing element 106a is located on an input side 105 of pump 104 to sense input pressure of the pump 104.
  • a second pressure sensing element 106b is located on an output side 107 of the pump 104 in order to sense output pressure from the pump 104.
  • This type of pressure sensor can be a differential pressure sensor spanning a pump membrane in order to output a difference in pressures by referencing pressure with another location where pressure is also measure. It is also considered that each of the sensing elements 106a, 106b can be independent pressure sensors to measure and produce absolute pressure readings.
  • the sensors 106a/b can be separate pressure transducers, each connected to the microcontroller 108 to monitor a pressure difference across the pump 104. Each one of the pressures sensing elements at each of the locations shown in Fig. 1 are both connected to a single differential pressure transducer 109.
  • the differential pressure transducer 109 is itself connected to the microcontroller 108 to convey input indicative of the pressure differential between the inlet and outlet of the pump 104.
  • a motor controller 108 is operatively coupled to the motor 102 in order to command the motor 102 to increase or decrease speeds based on targeted pressure commands received from a master engine controller 110, and based on the input from the pressure sensors 106a, 106b.
  • the motor controller 108 is programmed to compare the target pressure readings versus the outputs, and increase or decrease the speed of the motor 102 accordingly.
  • the motor controller 108 includes a non-transitory computer readable medium which includes computer executable instructions to monitor a supply pressure of the pump 104, monitor an outlet pressure of the pump 104, and monitor and control the speed of the electric motor 102 based on a comparison of the supply pressure and the outlet pressure of the pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP22186434.1A 2021-07-23 2022-07-22 Commande de rétroaction de pression de pompe volumétrique et procédé de commande Pending EP4123174A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17/384,588 US20230021491A1 (en) 2021-07-23 2021-07-23 Displacement pump pressure feedback control and method of control

Publications (1)

Publication Number Publication Date
EP4123174A1 true EP4123174A1 (fr) 2023-01-25

Family

ID=82701945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22186434.1A Pending EP4123174A1 (fr) 2021-07-23 2022-07-22 Commande de rétroaction de pression de pompe volumétrique et procédé de commande

Country Status (2)

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US (1) US20230021491A1 (fr)
EP (1) EP4123174A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230003341A1 (en) * 2019-12-09 2023-01-05 Hove A/S Pressure controlled grease pump

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US20170314282A1 (en) * 2016-05-01 2017-11-02 Sucxess LLC Fluid circulation monitoring system
US10364816B2 (en) * 2017-01-25 2019-07-30 Lincus, Inc. Remote pump managing device
US20200141331A1 (en) * 2018-11-06 2020-05-07 Rolls-Royce Plc Actuation system
CN111412132A (zh) * 2020-04-09 2020-07-14 湖南慧鎏科技有限公司 一种给水泵系统的控制方法及给水泵系统
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US20130048114A1 (en) * 2011-08-26 2013-02-28 Optimum Energy, Llc Controlled hydronic distribution system
US10815987B2 (en) * 2015-11-05 2020-10-27 Fmc Kongsberg Subsea As Pump protection method and system
US20170314282A1 (en) * 2016-05-01 2017-11-02 Sucxess LLC Fluid circulation monitoring system
US10364816B2 (en) * 2017-01-25 2019-07-30 Lincus, Inc. Remote pump managing device
US20200141331A1 (en) * 2018-11-06 2020-05-07 Rolls-Royce Plc Actuation system
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