DE102018105233A1 - A method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly - Google Patents
A method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly Download PDFInfo
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- DE102018105233A1 DE102018105233A1 DE102018105233.2A DE102018105233A DE102018105233A1 DE 102018105233 A1 DE102018105233 A1 DE 102018105233A1 DE 102018105233 A DE102018105233 A DE 102018105233A DE 102018105233 A1 DE102018105233 A1 DE 102018105233A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
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- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/27—Directional control by means of the pressure source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/633—Electronic controllers using input signals representing a state of the prime mover, e.g. torque or rotational speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6653—Pressure control
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- 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
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1026—Hydraulic
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- 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
- F16D2500/308—Signal inputs from the transmission
- F16D2500/30802—Transmission oil properties
- F16D2500/30803—Oil temperature
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- 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
- F16D2500/50—Problem to be solved by the control system
- F16D2500/51—Relating safety
- F16D2500/5104—Preventing failures
- F16D2500/5106—Overheat protection
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- 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
- F16D2500/50—Problem to be solved by the control system
- F16D2500/51—Relating safety
- F16D2500/5108—Failure diagnosis
- F16D2500/511—Leak detection
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- 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
- F16D2500/702—Look-up tables
- F16D2500/70205—Clutch actuator
- F16D2500/70217—Pressure
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- 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
- F16D2500/702—Look-up tables
- F16D2500/70252—Clutch torque
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- 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
- F16D2500/70408—Torque
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- 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
- F16D2500/7041—Position
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- 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
- F16D2500/708—Mathematical model
- F16D2500/7082—Mathematical model of the clutch
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- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H2059/683—Sensing pressure in control systems or in fluid controlled devices, e.g. by pressure sensors
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- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
- F16H2061/0081—Fuzzy logic
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung, bei welchem die hydraulische Aktoranordnung (100) eine Volumenstromquelle (104) umfasst, die über einen mit der Hydraulikflüssigkeit gefüllte Druckleitung (106) mit einem Hydraulikzylinder (108) verbunden ist, wobei ein Betriebsdruck der hydraulischen Aktoranordnung (100) über eine Druckregelung und eine Drehzahlregelung eingestellt wird. Bei einem Verfahren, bei welchem eine kostengünstige, aber trotzdem hochgenaue Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung möglich ist, erfolgt über die Druckregelung eine Grobeinstellung und über die Drehzahlregelung eine Feineinstellung des Druckniveaus zum Ausgleich von Leckageverlusten.The invention relates to a method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator arrangement, in which the hydraulic actuator arrangement (100) comprises a volume flow source (104) which is connected to a hydraulic cylinder (108) via a pressure line (106) filled with the hydraulic fluid wherein an operating pressure of the hydraulic actuator assembly (100) is adjusted via a pressure control and a speed control. In a method in which a cost-effective, but nevertheless highly accurate maintenance of a pressure level of a hydraulic fluid in a hydraulic actuator arrangement is possible, takes place via the pressure control coarse adjustment and the speed control, a fine adjustment of the pressure level to compensate for leakage losses.
Description
Die Erfindung betrifft ein Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung, bei welchem die hydraulische Aktoranordnung eine Volumenstromquelle umfasst, die über eine mit der Hydraulikflüssigkeit gefüllte Druckleitung mit einem Hydraulikzylinder verbunden ist, wobei ein Betriebspunkt der hydraulischen Aktoranordnung über eine Druckregelung und eine Drehzahlregelung eingestellt wird.The invention relates to a method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly, wherein the hydraulic actuator assembly comprises a volume flow source which is connected via a filled with the hydraulic fluid pressure line with a hydraulic cylinder, wherein an operating point of the hydraulic actuator assembly via a pressure control and a Speed control is set.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung anzugeben, bei welcher ein hochgenaues Druckniveau auch bei auftretenden Leckageverlusten eingestellt werden kann.The invention has for its object to provide a method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly in which a high-precision pressure level can be adjusted even when leakage losses occur.
Erfindungsgemäß ist die Aufgabe dadurch gelöst, dass über die Druckregelung eine Grobeinstellung und über die Drehzahlregelung eine Feineinstellung des Druckniveaus des Betriebsdruckes zum Ausgleich von Leckageverlusten erfolgt. Dabei kann der Druck mittels eines sehr preisgünstigen Drucksensors gemessen werden, dessen Auflösung allerdings nicht ausreicht, um eine hohe Genauigkeit bei der Einstellung der Druckniveaus zu realisieren. Diese Genauigkeit wird durch die Verwendung eines Drehzahlsensors erreicht, dessen Regelungsgenauigkeit wesentlich feiner ist als die des Drucksensors, weshalb mittels eines Steuergerätes dieser Feinabgleich zuverlässig eingestellt werden kann.According to the invention the object is achieved in that on the pressure control coarse adjustment and the speed control is a fine adjustment of the pressure level of the operating pressure to compensate for leakage losses. In this case, the pressure can be measured by means of a very inexpensive pressure sensor, the resolution of which, however, is insufficient to realize a high accuracy in the adjustment of the pressure levels. This accuracy is achieved by the use of a speed sensor whose control accuracy is much finer than that of the pressure sensor, which means that this fine balance can be adjusted reliably by means of a control unit.
Vorteilhafterweise werden die Signale der Druckregelung und der Drehzahlregelung überlagert, wobei nach der Grobeinstellung des Druckniveaus eine lokale Inkrementdrehzahlregelung für die Feineinstellung des Druckniveaus aktiviert wird. Mittels des grobauflösenden Drucksignals wird zunächst die von der hydraulischen Aktoranordnung anzusteuernde Einrichtung in einen vorgegebenen Bereich verfahren, während mittels der Drehzahlregelung eine genaue Position der einzustellenden Einrichtung in dem vorgegebenen Bereich erfolgt. Somit wird mit kostengünstigen Sensoren eine hochgenaue Einstellung des Druckniveaus in einer hydraulischen Aktoranordnung erreicht.Advantageously, the signals of the pressure control and the speed control are superimposed, wherein after the coarse adjustment of the pressure level, a local incremental speed control is activated for the fine adjustment of the pressure level. By means of the coarse-resolution pressure signal, the device to be controlled by the hydraulic actuator arrangement is first moved into a predetermined range, while by means of the speed control an exact position of the device to be adjusted takes place in the predetermined range. Thus, with low-cost sensors, a highly accurate adjustment of the pressure level is achieved in a hydraulic actuator assembly.
In einer Ausgestaltung erfolgt die Überlagerung der Signale der Druckregelung mit den Signalen der Drehzahlregelung mittels einer Überblendungsfunktion. Solche Überblendungsfunktionen werden üblicherweise in Fuzzy-Logiken verwendet und beinhalten eine Wichtung der beiden zu überlagernden Regelungen in Abhängigkeit von den einzustellenden Parametern.In one embodiment, the superposition of the signals of the pressure control with the signals of the speed control by means of a cross-fading function. Such blending functions are commonly used in fuzzy logic and involve weighting of the two schemes to be superimposed depending on the parameters to be set.
In einer Variante führt die lokale Inkrementdrehzahlregelung die Feineinstellung des Druckniveaus in Abhängigkeit einer aktuellen Temperatur der Hydraulikflüssigkeit zur Bestimmung der Leckageverluste aus. Da sich aufgrund der Temperatur die Viskosität der Hydraulikflüssigkeit ändert, ist die aktuelle Temperatur ein ausreichendes Kriterium, um die Höhe der Leckageverluste anzugeben.In one variant, the local incremental speed control performs the fine adjustment of the pressure level as a function of a current temperature of the hydraulic fluid for determining the leakage losses. Since the viscosity of the hydraulic fluid changes due to the temperature, the current temperature is a sufficient criterion for indicating the height of the leakage losses.
In einer Ausführungsform wird die aktuelle Temperatur der Hydraulikflüssigkeit aus einem Temperaturmodell geschätzt. Diese Schätzung der aktuellen Temperatur erfolgt dabei aus einer Vielzahl von Temperatursignalen, die an verschiedenen Positionen der hydraulischen Aktoranordnung gemessen werden und zu einer aktuellen Temperatur der hydraulischen Aktoranordnung zusammengeführt werden.In one embodiment, the current temperature of the hydraulic fluid is estimated from a temperature model. This estimate of the current temperature is carried out from a plurality of temperature signals, which are measured at different positions of the hydraulic actuator assembly and combined to a current temperature of the hydraulic actuator assembly.
In einer Weiterbildung wird als hydraulische Aktoranordnung ein Kupplungsaktor verwendet, mittels welchem ein Kupplungsmodell der durch den Kupplungsaktor anzusteuernden Kupplung abgeglichen wird. Somit ist ein einfacher Abgleich zwischen dem Kupplungsmodell und der Hardware der verwendeten Kupplung möglich, was zu einer hohen Genauigkeit bei der Bestimmung des Druckniveaus führt.In a further development, a clutch actuator is used as a hydraulic actuator arrangement, by means of which a coupling model of the clutch actuator to be controlled by the clutch is adjusted. Thus, a simple comparison between the coupling model and the hardware of the coupling used is possible, which leads to a high accuracy in the determination of the pressure level.
Vorteilhafterweise wird als Kupplungsmodell eine Drehmoment-Druck-Kennlinie abgeglichen. Durch eine solche Drehmoment-Druck-Kennlinie kann auf einen Wegsensor, mittels welchem die von der hydraulischen Aktoranordnung eingestellte Position gemessen werden soll, verzichtet werden, was die Verfahrenskosten weiter reduziert.Advantageously, a torque-pressure characteristic curve is adjusted as a coupling model. By means of such a torque-pressure characteristic, it is possible to dispense with a displacement sensor, by means of which the position set by the hydraulic actuator arrangement is to be measured, which further reduces the process costs.
In einer Ausgestaltung stellt die Druckregelung die Kupplung in einer Position mit einer begrenzten Drehmomentgenauigkeit ein, während die Drehzahlregelung einen Schlupf der Kupplung zur Einstellung einer Position der Kupplung mit einer hohen Drehmomentgenauigkeit reguliert. Somit wird mittels der Drehzahlregelung der Ausgang des Drucksignals moduliert, um die gewünschte Drehzahlgenauigkeit zu erreichen. In one embodiment, the pressure control adjusts the clutch in a position with limited torque accuracy, while the speed control regulates slip of the clutch to adjust a position of the clutch with high torque accuracy. Thus, by means of the speed control, the output of the pressure signal is modulated to achieve the desired speed accuracy.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Eine davon soll anhand der in der Zeichnung dargestellten Figuren näher erläutert werden.The invention allows numerous embodiments. One of them will be explained in more detail with reference to the figures shown in the drawing.
Es zeigen:
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1 ein Ausführungsbeispiel einer hydraulischen Kupplungsaktoranordnung, -
2 ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens.
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1 An embodiment of a hydraulic clutch actuator assembly, -
2 an embodiment of the method according to the invention.
Die Pumpe
Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens soll anhand von
Parallel dazu wird im Block
Mittels der Druckregelung wird zunächst die von dem hydraulischen Pumpenaktor anzusteuernde Kupplung
Die vorgegebene Lösung erlaubt somit eine hochgenaue Einstellung eines Druckniveaus einer Hydraulikflüssigkeit in einem hydraulischen Kupplungsaktor, bei welchem unter Verzicht auf einen Wegsensor immer ein hochgenaues Drehmoment an der Kupplung eingestellt wird, um den gewünschten Druck der Hydraulikflüssigkeit zu realisieren.The predetermined solution thus allows a highly accurate adjustment of a pressure level of a hydraulic fluid in a hydraulic clutch actuator, in which waiving a displacement sensor always a high-precision torque is set to the clutch to realize the desired pressure of the hydraulic fluid.
Die beschriebene Lösung ist nicht nur zur Ansteuerung von Kupplungen verwendbar,sondern kann auch für Getriebesteuerungen oder weitere hydraulische Betätigungssysteme eingesetzt werden.The solution described can not only be used to control clutches, but can also be used for transmission controls or other hydraulic actuation systems.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
- 100100
- KupplungsaktoranordnungKupplungsaktoranordnung
- 102102
- Kupplungclutch
- 104104
- Pumpepump
- 106106
- HochdruckhydraulikleitungHigh-pressure hydraulic line
- 108108
- Hydraulikzylinderhydraulic cylinders
- 110110
- Einrücklagerengagement bearing
- 112112
- Hydraulikreservoirhydraulic reservoir
- 114114
- NiederdruckhydraulikleitungLow-pressure hydraulic line
- 116116
- Elektromotorelectric motor
- 118118
- DrehzahlsensorSpeed sensor
- 120120
- Drucksensorpressure sensor
- 122122
- Steuergerätcontrol unit
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102016201409 A1 [0002]DE 102016201409 A1 [0002]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018105233.2A DE102018105233A1 (en) | 2018-03-07 | 2018-03-07 | A method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018105233.2A DE102018105233A1 (en) | 2018-03-07 | 2018-03-07 | A method for maintaining a pressure level of a hydraulic fluid in a hydraulic actuator assembly |
Publications (1)
Publication Number | Publication Date |
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DE102018105233A1 true DE102018105233A1 (en) | 2019-09-12 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19943334A1 (en) * | 1999-09-10 | 2001-06-07 | Zahnradfabrik Friedrichshafen | Method for regulating a clutch or a brake in a transmission |
DE102016201409A1 (en) | 2016-01-29 | 2017-08-03 | Tyco Electronics Austria Gmbh | Comb for a narrow relay, comb assembly and relays |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE19943334A1 (en) * | 1999-09-10 | 2001-06-07 | Zahnradfabrik Friedrichshafen | Method for regulating a clutch or a brake in a transmission |
DE102016201409A1 (en) | 2016-01-29 | 2017-08-03 | Tyco Electronics Austria Gmbh | Comb for a narrow relay, comb assembly and relays |
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