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US20120076667A1 - Electric motor pump control incorporating pump element position information - Google Patents

Electric motor pump control incorporating pump element position information Download PDF

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Publication number
US20120076667A1
US20120076667A1 US12/889,612 US88961210A US2012076667A1 US 20120076667 A1 US20120076667 A1 US 20120076667A1 US 88961210 A US88961210 A US 88961210A US 2012076667 A1 US2012076667 A1 US 2012076667A1
Authority
US
United States
Prior art keywords
pump
electric motor
power
controller
pump element
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.)
Abandoned
Application number
US12/889,612
Other languages
English (en)
Inventor
Daniel Patient
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.)
Robert Bosch GmbH
Robert Bosch LLC
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to US12/889,612 priority Critical patent/US20120076667A1/en
Assigned to ROBERT BOSCH LLC, ROBERT BOSCH GMBH reassignment ROBERT BOSCH LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PATIENT, DANIEL
Priority to PCT/US2011/046996 priority patent/WO2012039845A2/fr
Priority to JP2013530151A priority patent/JP2013537956A/ja
Priority to EP11754774.5A priority patent/EP2619458A2/fr
Publication of US20120076667A1 publication Critical patent/US20120076667A1/en
Abandoned 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/404—Control of the pump unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0041—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation by piston speed control
    • 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
    • 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
    • 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
    • F04B49/12—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 by varying the length of stroke of the working members
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0208—Power
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed

Definitions

  • ESP® Electronic Stability Program
  • Robert Bosch Robert Bosch
  • ESP® premium system which is based on a conventional hydraulic braking system (although it can perform the functions of an electro-mechanical braking system).
  • the ESP® premium system uses a hydraulic pump that has six pistons moved by an eccentric cam rotated by an electric motor.
  • Other known hydraulic pumps systems include fewer pistons (two or three, for example).
  • a common characteristic for systems that include a hydraulic pump driven by an electric motor is that the pumping action generates pressure pulsations that create noise and vibration in the system. Depending on the number of pistons and the speed of the electric motor, the level of noise and vibrations varies from system to system.
  • NVH noise-canceling headphones.
  • the previously disclosed methods for reducing NVH do not propose reducing the noise and vibrations in a hydraulic pump by regulating the power of the electric motor of the pump based on the position of the pump element.
  • Embodiments of the invention control and reduce the NVH of an electric motor of a hydraulic pump by using information about the pump element position relative to the pump stroke and manipulating or controlling the power of the electric motor based on the pump stroke position.
  • Embodiments are applicable to both, brushed and brushless direct-current (“DC”) motors.
  • FIG. 3 is a block diagram of a pump electric motor control module.
  • FIG. 6 is a graph depicting a target power profile used by the system for controlling an electric motor of a pump shown in FIG. 1 , where the target power frequency is two times the pump element stroke.
  • the arrangement and the position of the sensors 20 of the system 12 can vary depending on the different embodiments of the system and the type of sensors used in those embodiments.
  • the sensors 20 are directly connected to the controller 25 .
  • the sensors are connected to a network, such as a controller area network (“CAN”) bus 22 , which is connected to the controller 24 .
  • CAN controller area network
  • the hydraulic pump 10 includes an electric motor 18 , an eccentric cam (or, simple “eccentric”) 14 , a rotating shaft 17 , and a number of pump elements (pistons) 16 .
  • the pump 10 is operatively connected to and driven by the motor 18 .
  • the system 12 includes a pump 10 with three pump pistons 16 .
  • the system 12 can include pumps with different number of pump pistons (two, four, six, etc.).
  • the pump elements 16 are located near the motor 18 and are pushed up and down by the eccentric 14 , which is rotated by the shaft 17 of the motor 18 .
  • Several position sensors 20 (not shown) are operatively coupled to the shaft 17 of the motor 18 and are connected to the controller 24 .
  • the position of the pump element 16 and the shaft 17 can be determined directly by using a position sensor or a plurality of position sensors, or indirectly by monitoring and measuring the motor voltage.
  • the system selects a “target power profile” from a table with various target power profiles stored in the memory of the controller in order to regulate the power sent to the motor 18 .
  • This target power is based on the previously determined pump element position.
  • the system 12 uses a power control device 25 (an amplifier, a transducer, or another type of transformation device) to manipulate the electrical energy sent to the pump motor 18 to affect (i.e., counter act) the pressure pulsations generated by the stroke of the reciprocating pump element 16 .
  • One embodiment of the invention utilizes an advanced (and more expensive) sensor array having a large number of position sensors (Hall effect sensors), which are positioned on or around the rotating shaft 17 .
  • an advanced sensor array By using an advanced sensor array, the system 12 obtains more precise position information of the pump element and the shaft.
  • the system 12 receives position information for only part of the rotation of the shaft 17 (for example the system can receive a pulse for 5 degrees on every rotation).
  • the system 12 estimates the position of the shaft 17 for the rest of the rotation based on various additional factors—the rpm of the electric motor, the sum of torques acting on the motor, and the overall pressure that the pump 10 is working against.
  • the system combines these factors with the initial sensor measurement in order to estimate the future position of the pump element and subsequently verifies whether this position is correct.
  • the system 12 uses electrical monitoring to indirectly determine the position of the pump element 16 in relation to the pump stroke.
  • the system 12 determines the position of the pump elements 16 and the shaft 17 without any position sensors 20 .
  • the system 12 measures the electrical signal of the motor wire as the communicator switches from one winding to another in order to determine the position of the shaft 17 and the pump element 16 .
  • a similar method for indirectly determining the position of the electric motor and the pump element is described in EP 2096749 A1.
  • the system 12 can also indirectly determine the position of the electric motor and the pump elements in a brushless DC motor.
  • the position of the pump element 16 and the shaft 17 can be also determined indirectly without the use of position sensors.
  • indirect or “sensorless” determination of the pump element position is not preferred for electronic stability control systems because the electric motor starts and stops frequently and the starting and stopping makes it difficult to keep track of the position of the motor elements.
  • FIG. 2 schematically illustrates the functionality of the pump electric motor control system 12 of FIG. 1 in greater detail.
  • the control system 12 includes the controller 24 and one or more sensors 20 .
  • the controller 24 obtains sensor readings directly from one or more of the sensors 20 .
  • compensated sensor readings are used by the controller 24 , rather than raw data.
  • the controller 24 compensates one or more of the sensor readings by applying an offset. Offsets are used to compensate for sensor aging, fouling, and other signal corruption that may occur.
  • controller 24 includes a processor such as a microcontroller or microprocessor, associated electronic circuitry such as input/output circuitry, various programmed modules, and one or more memory components.
  • processor such as a microcontroller or microprocessor
  • associated electronic circuitry such as input/output circuitry, various programmed modules, and one or more memory components.
  • the controller 24 includes an input/output interface 40 , an electronic processing unit (“EPU”) 42 , and one or more memory modules, such as a random access memory (“RAM”) 44 and read-only memory (“ROM”) 45 .
  • the input/output interface 40 transmits and/or receives information, including sensor readings from the sensors 20 .
  • the controller 24 also includes a pump electric motor control (“PEMC”) module 50 that is executed by the EPU 42 .
  • the PEMC module 50 is architected to determine the position of the shaft 17 and the pump element 16 relative to the pump stroke and controls the power of the electric motor 18 in relation to the determined control position.
  • FIG. 3 illustrates the operation of pump electric motor control (“PEMC”) module 50 in greater detail.
  • the PEMC module 50 is configured to determine the position (stroke) of the pump element 16 , which has a set relationship with the electric motor 18 as the motor shaft 17 rotates, and to control the power of the electric motor 18 in relation to the pump stroke position.
  • the PEMC module 50 receives sensor signals from the sensors 20 (or in the alternative embodiment a single sensor) through the input/output interface 40 and based on these signals determines the position of the pump element 16 .
  • the PEMC module 50 determines the pump stroke position—this is the position of the pump element 16 relative to the pump stroke (i.e., the motion of the pump element as the pump is moving or whether the pump element is pumping fluid or not).
  • the pump stroke position is determined based on the position of the electric motor 18 (using the motor shaft position) relative to the position of the pump element 16 .
  • the PEMC module 50 selects a target control power from the table with target power profiles according to the determined pump stroke position
  • the PEMC module 50 uses the power control device 25 to manipulate the power sent to the electric motor 18 in accordance with the selected target control power. Controlling the power sent to the motor 18 includes voltage control (e.g., pulse width modulation control) or current control (e.g., by specific hardware) depending on the implementation of the system. By regulating the power of the electric motor 18 in relation to the stroke of the pump element 16 , the PEMC module 50 helps to affect (i.e. reduce) noise, vibration, and harshness generated by the pump 10 .
  • the power control device 25 is a metal-oxide-semiconductor, field-effect transistor (MOSFET) control device. In alternative embodiments, the power control device 25 can be an amplifier, transducer, or other control device.
  • MOSFET metal-oxide-semiconductor, field-effect transistor
  • FIGS. 4-6 represent several target power profiles that are stored in the RAM 44 and are used by the PEMC module 50 in order to select a target control power to control the electric motor 18 . Additional target power profiles can be created and used in various embodiments of the invention.
  • the waveform graphs in FIGS. 4-6 represent embodiments of the invention where the pump 10 includes three pump elements or pistons 16 (as shown in FIG. 1 ). In alternative embodiments of the invention, a different number of pump elements can be used.
  • the waves at the lower portion of FIGS. 4-6 represent the movement/stroke of the pump elements 16 . In general, these pump elements 16 generate a pressure pulse every 120 degrees.
  • FIG. 5 illustrates a second target power profile that is used by the system 12 .
  • the target power is out of phase with the pump element position.
  • the target power will be less when the pump element is moving and the target power will go up when the pump is not moving.
  • the target power creates an oscillation wave that is exactly out of phase with the pump noise wave and the two waves will interact. In the right condition, these two opposite phase oscillations can combine with the result being a smaller wave.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
US12/889,612 2010-09-24 2010-09-24 Electric motor pump control incorporating pump element position information Abandoned US20120076667A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/889,612 US20120076667A1 (en) 2010-09-24 2010-09-24 Electric motor pump control incorporating pump element position information
PCT/US2011/046996 WO2012039845A2 (fr) 2010-09-24 2011-08-09 Commande de pompe à moteur électrique comportant des informations de position d'élément de pompe
JP2013530151A JP2013537956A (ja) 2010-09-24 2011-08-09 ポンプ要素位置情報を組み入れた電気モータポンプ制御
EP11754774.5A EP2619458A2 (fr) 2010-09-24 2011-08-09 Commande de pompe à moteur électrique comportant des informations de position d'élément de pompe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/889,612 US20120076667A1 (en) 2010-09-24 2010-09-24 Electric motor pump control incorporating pump element position information

Publications (1)

Publication Number Publication Date
US20120076667A1 true US20120076667A1 (en) 2012-03-29

Family

ID=44584640

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/889,612 Abandoned US20120076667A1 (en) 2010-09-24 2010-09-24 Electric motor pump control incorporating pump element position information

Country Status (4)

Country Link
US (1) US20120076667A1 (fr)
EP (1) EP2619458A2 (fr)
JP (1) JP2013537956A (fr)
WO (1) WO2012039845A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170217413A1 (en) * 2014-08-14 2017-08-03 Continental Teves Ag & Co. Ohg Method for determining a position and/or change in position of a hydraulic pump of a motor vehicle brake system and motor vehicle brake system
US9825563B2 (en) 2014-09-19 2017-11-21 Flow Control LLC Method and means for detecting motor rotation
CN111544683A (zh) * 2020-06-08 2020-08-18 漯河市第一人民医院 一种神经内科双向加压清洗装置
US10753361B2 (en) * 2014-04-25 2020-08-25 Sensia Llc ESP pump flow rate estimation and control
US10876393B2 (en) 2014-05-23 2020-12-29 Sensia Llc Submersible electrical system assessment
US20210016751A1 (en) * 2018-05-09 2021-01-21 Robert Bosch Gmbh Method for controlling a driving dynamics control device, and driving dynamics control device
US11077836B2 (en) * 2018-05-30 2021-08-03 Robert Bosch Gmbh Method for controlling a hydraulic braking system
US20220397112A1 (en) * 2021-06-15 2022-12-15 Lg Electronics Inc. Apparatus for controlling compressor, compressor and method for controlling compressor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527953A (en) * 1984-10-12 1985-07-09 E. I. Du Pont De Nemours And Company Pump unit for sampling air
US5120199A (en) * 1991-06-28 1992-06-09 Abbott Laboratories Control system for valveless metering pump
US20020197164A1 (en) * 2000-09-20 2002-12-26 Fluid Management, Inc. Nutating pump, control system and method of control thereof
US20020197166A1 (en) * 2001-03-29 2002-12-26 Carstensen Peter T. Precision hydraulic energy delivery system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264432B1 (en) * 1999-09-01 2001-07-24 Liquid Metronics Incorporated Method and apparatus for controlling a pump
GB0803737D0 (en) 2008-02-29 2008-04-09 Melexis Nv Pulse count control for brushed DC motor driven by pulse width modulation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527953A (en) * 1984-10-12 1985-07-09 E. I. Du Pont De Nemours And Company Pump unit for sampling air
US5120199A (en) * 1991-06-28 1992-06-09 Abbott Laboratories Control system for valveless metering pump
US20020197164A1 (en) * 2000-09-20 2002-12-26 Fluid Management, Inc. Nutating pump, control system and method of control thereof
US20020197166A1 (en) * 2001-03-29 2002-12-26 Carstensen Peter T. Precision hydraulic energy delivery system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10753361B2 (en) * 2014-04-25 2020-08-25 Sensia Llc ESP pump flow rate estimation and control
US11353029B2 (en) * 2014-04-25 2022-06-07 Sensia Llc ESP pump flow rate estimation and control
US10876393B2 (en) 2014-05-23 2020-12-29 Sensia Llc Submersible electrical system assessment
US20170217413A1 (en) * 2014-08-14 2017-08-03 Continental Teves Ag & Co. Ohg Method for determining a position and/or change in position of a hydraulic pump of a motor vehicle brake system and motor vehicle brake system
US10486666B2 (en) * 2014-08-14 2019-11-26 Continental Teves Ag & Co. Ohg Method for determining a position and/or change in position of a hydraulic pump of a motor vehicle brake system and motor vehicle brake system
US9825563B2 (en) 2014-09-19 2017-11-21 Flow Control LLC Method and means for detecting motor rotation
US20210016751A1 (en) * 2018-05-09 2021-01-21 Robert Bosch Gmbh Method for controlling a driving dynamics control device, and driving dynamics control device
US11912257B2 (en) * 2018-05-09 2024-02-27 Robert Bosch Gmbh Method for controlling a driving dynamics control device, and driving dynamics control device
US11077836B2 (en) * 2018-05-30 2021-08-03 Robert Bosch Gmbh Method for controlling a hydraulic braking system
CN111544683A (zh) * 2020-06-08 2020-08-18 漯河市第一人民医院 一种神经内科双向加压清洗装置
US20220397112A1 (en) * 2021-06-15 2022-12-15 Lg Electronics Inc. Apparatus for controlling compressor, compressor and method for controlling compressor
US12326146B2 (en) * 2021-06-15 2025-06-10 Lg Electronics Inc. Apparatus for controlling compressor, compressor and method for controlling compressor

Also Published As

Publication number Publication date
EP2619458A2 (fr) 2013-07-31
WO2012039845A3 (fr) 2012-12-20
WO2012039845A2 (fr) 2012-03-29
JP2013537956A (ja) 2013-10-07

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