WO2021209087A1 - Actionneur de pompe et procédé de commande d'actionneur de pompe - Google Patents

Actionneur de pompe et procédé de commande d'actionneur de pompe Download PDF

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Publication number
WO2021209087A1
WO2021209087A1 PCT/DE2021/100263 DE2021100263W WO2021209087A1 WO 2021209087 A1 WO2021209087 A1 WO 2021209087A1 DE 2021100263 W DE2021100263 W DE 2021100263W WO 2021209087 A1 WO2021209087 A1 WO 2021209087A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump actuator
pressure
pump
fluid pressure
signal
Prior art date
Application number
PCT/DE2021/100263
Other languages
German (de)
English (en)
Inventor
Christian Eberle
Erhard Hodrus
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2021209087A1 publication Critical patent/WO2021209087A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • 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
    • 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
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1208—Angular position of the shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3024—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/70406—Pressure

Definitions

  • the invention relates to a method for controlling a pump actuator according to the preamble of claim 1. Furthermore, the invention relates to such a pump actuator.
  • a method for controlling a pump actuator is known from DE 10 2015 204 383 A1, for example. It describes a pump actuator in a hydraulic device for actuating a clutch.
  • the pump actuator is connected to a slave cylinder via a hydraulic device, which acts on the clutch via an engagement bearing. If a specified operating point of the clutch is reached, the pump actuator is switched from speed control to pressure control.
  • the rotary position of the pump actuator is set as a function of a measured fluid pressure that is detected by a pressure sensor on the slave cylinder.
  • the object of the present invention is to control a pump actuator more precisely.
  • the fluid pressure should be provided more evenly.
  • the pump actuator should be operated more efficiently and reliably.
  • the pump actuator should be designed to be more cost-effective.
  • At least one of these objects is achieved by a method for controlling a pump actuator having the features according to claim 1.
  • the fluid pressure can be provided more uniformly.
  • the pressure fluctuations caused by rotational irregularities can be reduced.
  • the pump actuator can be operated more efficiently and cost-effectively.
  • the pressure fluctuations can be triggered by the pump friction that changes with one revolution of the pump actuator.
  • the pressure fluctuations can mainly be traced back to the influences that exist during the generation of pressure.
  • the controller output signal can be smoothed as far as possible by the compensation signal.
  • the pressure changes in the fluid pressure, which change over time in proportion to the speed of the pump actuator, can be reduced as far as possible.
  • the method can be carried out in one operation of the pump actuator.
  • the compensation signal can initially be specified.
  • the compensation signal can be specified before the pump actuator is started up.
  • the compensation signal can be set as a function of at least one operating parameter, for example a temperature.
  • the compensation signal is adapted when the pump actuator is in operation.
  • the compensation signal can be adjusted repeatedly while the pump actuator is in operation. The adjustment can be dependent on an operating point of the pump actuator. The control of the pump actuator can thus take place more precisely and more reliably.
  • a time profile of the pressure fluctuations is recorded as a fluctuation pattern and the compensation signal is set as a function of a compensation pattern assigned to the fluctuation pattern.
  • the compensation pattern can be saved and retrieved.
  • the compensation pattern is scaled and set as a compensation signal.
  • the compensation signal can be scaled as a function of the measured fluid pressure and / or the speed of the pump actuator. As a result, the accuracy of the control can be increased at different operating points of the pump actuator.
  • the compensation signal is a periodic signal assigned to the rotational position.
  • the compensation signal can be stored as a time course of compensation values.
  • a respective compensation value can be assigned to a rotational position.
  • a compensation value of the compensation signal is set as a function of the rotational position.
  • the compensation value can be set depending on the rotary position and a phase shift.
  • the phase shift can be adjustable depending on an operating point of the pump actuator.
  • the pressure fluctuations are present as pressure changes occurring within one revolution of the pump actuator.
  • the pressure fluctuations can deviate upwards and downwards within one revolution from an average value of the fluid pressure.
  • a pump actuator for providing a fluid pressure having an electric motor and a pressure device for building up the fluid pressure depending on a rotational position of the electric motor, the pump actuator being controlled by a pump controller via an input signal dependent on a controller output signal
  • the pump actuator can be operated more reliably and efficiently.
  • the pump actuator can be made more cost-effective.
  • the pump actuator can be arranged in a vehicle.
  • the pump actuator can be assigned to a hydraulic device.
  • the pump actuator can provide a supply fluid flow, in particular for the lubrication or cooling of a further component.
  • the fluid pressure can be a hydraulic and / or pneumatic pressure.
  • the pump actuator can be assigned directly to the pump controller.
  • the pressure device can be designed as a fluid pressure pump.
  • the electric motor can have an angle sensor for detecting the rotational position.
  • the measured fluid pressure can be recorded on the pump actuator or on a transmission path connected to the pump actuator.
  • the pump actuator provides the fluid pressure as the actuation pressure of an actuation device.
  • the actuating device can be set up to actuate a clutch and / or a parking lock.
  • the pump actuator is designed as an electronic pump actuator.
  • the pump controller can be arranged directly on the pump actuator.
  • FIG. 1 A hydraulic device with a pump actuator in a special embodiment of the invention.
  • FIG. 2 A method for controlling a pump actuator in a special embodiment of the invention.
  • Figure 3 A signal curve over time when operating various pump actuators.
  • FIG. 4 A time profile of a controller output signal from the respective pump actuators.
  • FIG. 5 A time profile of an adapted controller output signal of a pump actuator in a special embodiment of the invention.
  • FIG. 1 shows a fly hydraulic device 10 with a pump actuator 12 in a special embodiment of the invention.
  • the hydraulic device 10 is arranged in the vehicle and provides a fluid pressure via the pump actuator 12, which fluid pressure can produce an actuating pressure for actuating a clutch 14 by an actuating device 16.
  • the pump actuator 12 has a pressure device 18 and an electric motor 20.
  • the pressure device 18 is preferably a fluid pressure pump, in particular a gear pump.
  • the pump actuator 12 is preferably designed as an electronic pump actuator.
  • the pump actuator 12 is controlled by a pump controller 22.
  • the pump regulator 22 outputs a regulator output signal to the pump actuator 12 and controls a rotational position of the electric motor 20.
  • the electric motor 20 drives the pressure device 18 and the fluid pressure provided depends on the rotational position of the electric motor 20.
  • the fluid pressure provided is detected as a measured fluid pressure by a pressure sensor 24.
  • the pressure sensor 24 is arranged on a first fluid line 26 between the pump actuator 12 and the actuating device 16.
  • the fluid pressure is provided as an actuation pressure in that the pump actuator 12 is operated in one direction of rotation.
  • a supply fluid flow is provided in a second fluid line 28.
  • the supply fluid flow which is passed through a heat exchanger 30, is set up for cooling and / or for lubricating further components.
  • the first fluid line 26 hydraulically connects the pump actuator 12 via a valve 32 to a parking lock 34 and the clutch 14.
  • the parking lock 34 and / or the clutch 14 can be hydraulically operated by the fluid pressure acting as the operating pressure.
  • the actuation device 16 can be a CSC actuation 36 which has a slave cylinder 38 arranged concentrically to the axis of rotation of the clutch 14. When the clutch 14 is actuated, torque can be transmitted between a clutch input and a clutch output of the clutch 14. When the clutch 14 is open, the torque transmission via the clutch 14 is interrupted.
  • the parking lock 34 has a travel sensor 40 which is electrically connected to the pressure sensor 24 for detecting the measured fluid pressure via a CAN data line 42 with a control unit 44.
  • the pump regulator 22 is also electrically connected to the control unit 44.
  • the pump actuator 12 takes the fluid to be delivered from a fluid reservoir 46.
  • pump friction in particular the pressure device 18, can be variable during one revolution and trigger pressure fluctuations in the provided fluid pressure corresponding to the rotational irregularities.
  • FIG. 2 shows a method 100 for controlling a pump actuator 12 in a special embodiment of the invention.
  • the pump controller 22 outputs a controller output signal Ar as an input signal Ep to the pump actuator 12 as a function of a controller input signal Er.
  • the pump actuator 12 provides a Transmission path S, for example the first fluid line, the fluid pressure p as a function of the controller output signal Ar ready.
  • the fluid pressure p is recorded as a measured fluid pressure pm by a pressure sensor and influences the controller input signal Er as a controlled variable.
  • the controller input signal Er is dependent on a control signal E for changing the fluid pressure p.
  • the pressure fluctuations of the fluid pressure p occurring during one revolution of the pump actuator 12 due to the rotational nonuniformity, for example due to a variable pump friction during one revolution, can lead to an imprecise provision of the fluid pressure p.
  • FIG. 3 c for example, a pressure curve over time of the measured fluid pressure pm is shown over several revolutions of a first pump actuator.
  • the fluid pressure is subject to periodic pressure fluctuations pd due to the rotational irregularity of the first pump actuator.
  • FIG. 3 d) shows, for example, a different time profile of the measured fluid pressure pm over several revolutions of a second pump actuator.
  • the pressure fluctuations pd are different from those from FIG. 3 c) and depend on the structure and the operating conditions of the pump actuator.
  • FIG. 3 a shows the controller output signal Ar associated with the first and second pump actuator depending on the rotary position D shown in FIG. 3 b).
  • FIG. 4 a a curve of the controller output signal Ar over several revolutions of the first pump actuator is shown enlarged.
  • FIG. 4 b) shows the corresponding controller output signal Ar of the second pump actuator.
  • the controller output signal Ar is influenced by a compensation unit 48 in that the measured pressure fluctuations recorded via the measured fluid pressure pm are output via the compensation unit 48 as compensation signal Sa.
  • the controller output signal Ar is through the compensation signal Sa changed to reduce the pressure fluctuations and provided as an adapted controller output signal Ar to the pump controller 12 as an input signal Ep.
  • An adapted controller output signal Ar is shown in a time curve in FIG.
  • the adjusted controller output signal Ar is smoothed compared to the controller output signal output by the pump controller and thus enables a more uniform provision of the fluid pressure with reduced pressure fluctuations.
  • first fluid line 28 second fluid line 30 heat exchanger 32 valve 34 parking lock

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un procédé (100) permettant de commander un actionneur de pompe (12) afin de fournir une pression de fluide (p), laquelle est augmentée au moyen du fonctionnement de l'actionneur de pompe (12), dépend d'une position de rotation de l'actionneur de pompe (12) et est détectée en tant que pression de fluide mesurée (pm) formant une variable régulée. L'actionneur de pompe (12) est commandé au moyen d'un signal de sortie (Ar) d'un dispositif de commande (22) de pompe en fonction d'un signal d'entrée (Er) du dispositif de commande, du fait que le signal d'entrée (Er) du dispositif de commande est modifié en fonction de la variable régulée. Les fluctuations de pression (pd) de la pression de fluide (p), déclenchées par des irrégularités de rotation de l'actionneur de pompe (12), sont détectées sous forme de fluctuations mesurées de pression au moyen de la pression de fluide mesurée (pm), et le signal de sortie (Ar) du dispositif de commande est modifié en fonction d'un signal de compensation (Sa), réglé en fonction des fluctuations mesurées de pression afin de réduire les fluctuations de pression (pd). L'invention concerne également un actionneur de pompe (12) dudit type.
PCT/DE2021/100263 2020-04-16 2021-03-16 Actionneur de pompe et procédé de commande d'actionneur de pompe WO2021209087A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020110375 2020-04-16
DE102020110375.1 2020-04-16

Publications (1)

Publication Number Publication Date
WO2021209087A1 true WO2021209087A1 (fr) 2021-10-21

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ID=75639627

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Application Number Title Priority Date Filing Date
PCT/DE2021/100263 WO2021209087A1 (fr) 2020-04-16 2021-03-16 Actionneur de pompe et procédé de commande d'actionneur de pompe

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DE (1) DE102021106310A1 (fr)
WO (1) WO2021209087A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810370A2 (fr) * 1996-05-29 1997-12-03 Graco Inc. Servocommande électronique des régimes de pression d'une pompe
EP2020521A1 (fr) * 2007-08-02 2009-02-04 Honda Motor Co., Ltd Système d'embrayage hydraulique et procédé pour un véhicule
DE102015204383A1 (de) 2015-03-11 2016-09-15 Schaeffler Technologies AG & Co. KG Verfahren zur Einstellung und Adaption eines Betriebspunktes einer hydraulischen Aktoranordnung
EP3174192A1 (fr) * 2015-11-27 2017-05-31 Gefran S.p.A. Procédé de commande d'un moteur électrique de servopompe de machine industrielle pour modifier la pression hydraulique appliquée à une charge par la servopompe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810370A2 (fr) * 1996-05-29 1997-12-03 Graco Inc. Servocommande électronique des régimes de pression d'une pompe
EP2020521A1 (fr) * 2007-08-02 2009-02-04 Honda Motor Co., Ltd Système d'embrayage hydraulique et procédé pour un véhicule
DE102015204383A1 (de) 2015-03-11 2016-09-15 Schaeffler Technologies AG & Co. KG Verfahren zur Einstellung und Adaption eines Betriebspunktes einer hydraulischen Aktoranordnung
EP3174192A1 (fr) * 2015-11-27 2017-05-31 Gefran S.p.A. Procédé de commande d'un moteur électrique de servopompe de machine industrielle pour modifier la pression hydraulique appliquée à une charge par la servopompe

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DE102021106310A1 (de) 2021-10-21

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