WO2006099983A1 - Method for driving at least one electromagnetic pressure regulator by means of pulse-width modulation - Google Patents

Method for driving at least one electromagnetic pressure regulator by means of pulse-width modulation Download PDF

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Publication number
WO2006099983A1
WO2006099983A1 PCT/EP2006/002388 EP2006002388W WO2006099983A1 WO 2006099983 A1 WO2006099983 A1 WO 2006099983A1 EP 2006002388 W EP2006002388 W EP 2006002388W WO 2006099983 A1 WO2006099983 A1 WO 2006099983A1
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WO
WIPO (PCT)
Prior art keywords
width modulation
pulse width
pressure regulator
frequency
frequencies
Prior art date
Application number
PCT/EP2006/002388
Other languages
German (de)
French (fr)
Inventor
Anton Fritzer
Original Assignee
Zf Friedrichschafen Ag
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 Zf Friedrichschafen Ag filed Critical Zf Friedrichschafen Ag
Publication of WO2006099983A1 publication Critical patent/WO2006099983A1/en

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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
    • 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
    • F16H61/02—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 the signals used
    • F16H61/0202—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 the signals used the signals being electric
    • F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
    • 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
    • F16H61/02—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 the signals used
    • F16H61/0202—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 the signals used the signals being electric
    • F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
    • F16H2061/0255—Solenoid valve using PWM or duty-cycle control

Definitions

  • the present invention relates to a method for controlling at least one electromagnetic pressure regulator via a pulse width modulation according to the preamble of patent claim 1.
  • Such pressure regulators are generally driven by means of pulse width modulation in the current, for which purpose a constant pulse width modulation frequency is selected, which is, for example, of the order of magnitude of 1000 Hz. If several pressure regulators are to be controlled, the pressure regulators are actuated out of phase, so that the switch-on edge of the current does not occur simultaneously, so as not to adversely affect the electromagnetic compatibility. This phase offset is easy to implement at constant and equal frequency for all pressure regulators.
  • the present invention has for its object to provide a method for controlling at least one electromagnetic pressure regulator via a pulse width modulation, by means of which a phase-shifted Ansteuemng multiple pressure regulator over a variable pulse width modulation frequency is made possible.
  • the pulse width modulation frequency is not changed continuously but in steps, the possible frequency values being in such a relationship that a fixed phase relationship of all frequencies is given to each other, so that a phase-shifted control of several pressure regulators via one variable pulse width modulation frequency is enabled
  • pulse width modulation frequencies in such a way that they are an integral part of a constant maximum frequency (base frequency). For example, starting from a base frequency of 2000 Hz, pulse width modulation frequencies of 1000, 666%, 500, 400, 333 Y 3 , 285 5/7, and / or 250 Hz may be used.
  • the pulse width modulation frequencies are selected in the control of the pressure regulator from the set of possible frequencies according to the invention as a function of the oil temperature and the operating point (pressure) of the pressure regulator.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The invention relates to a method for driving at least one electromagnetic pressure regulator by means of pulse-width modulation, wherein the pulse-width modulation frequency thereof is modified in steps. The possible frequency values have a ratio in relation to each other such that a fixed phase relation of all frequencies is interconnected and that a phase-shifted control of several pressure regulators is possible via a variable pulse-width modulation frequency.

Description

Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation Method for controlling at least one electromagnetic pressure regulator via a pulse width modulation
Die vorliegende Erfindung betrifft ein Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to a method for controlling at least one electromagnetic pressure regulator via a pulse width modulation according to the preamble of patent claim 1.
Aus dem Stand der Technik ist bekannt, elektromagnetische Druckregler zur Steuerung von Ventilen einzusetzen, beispielsweise zur Steuerung von Ventilen von Schaltelementen eines Automatgetriebes.It is known from the prior art to use electromagnetic pressure regulators for controlling valves, for example for controlling valves of shifting elements of an automatic transmission.
Derartige Druckregler werden im Allgemeinen mittels Pulsweitenmodulation im Strom angesteuert, wobei hierfür eine konstante Pulsweitenmodulati- ons-Frequenz gewählt wird, die beispielsweise in der Größenordnung von 1000 Hz liegt. Wenn mehrere Druckregler anzusteuern sind, werden die Druckregler phasenverschoben angesteuert, damit die Einschaltflanke des Stroms nicht gleichzeitig erfolgt, um auf diese Weise die elektromagnetische Verträglichkeit nicht negativ zu beeinflussen. Dieser Phasenversatz ist bei konstanter und gleicher Frequenz für alle Druckregler einfach zu realisieren.Such pressure regulators are generally driven by means of pulse width modulation in the current, for which purpose a constant pulse width modulation frequency is selected, which is, for example, of the order of magnitude of 1000 Hz. If several pressure regulators are to be controlled, the pressure regulators are actuated out of phase, so that the switch-on edge of the current does not occur simultaneously, so as not to adversely affect the electromagnetic compatibility. This phase offset is easy to implement at constant and equal frequency for all pressure regulators.
Aus dem Stand der Technik ist bekannt, eine variable Pulsweitenmodu- lations-Frequenz zu wählen, wodurch die Hysterese der Druckregler verbessert wird. Hierbei wird die Frequenz in Abhängigkeit von der Öltemperatur und vom Afbeitspunkt (Druck) des Druckreglers gewählt und liegt im Intervall zwischen 200 Hz und 1000 Hz. Damit sind bei mehreren Druckreglern unterschiedliche Frequenzen erforderlich, was in nachteiliger Weise darin resultiert, dass eine feste Phasenbeziehung nicht realisierbar ist. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation anzugeben, mittels dessen eine phasenverschobene Ansteuemng mehrerer Druckregler über eine variable Pulsweitenmodulations- Frequenz ermöglicht wird.It is known from the prior art to select a variable pulse width modulation frequency, whereby the hysteresis of the pressure regulator is improved. Here, the frequency is selected as a function of the oil temperature and the Afbeitspunkt (pressure) of the pressure regulator and is in the interval between 200 Hz and 1000 Hz. Thus, different frequencies are required for several pressure regulators, resulting in a disadvantageous way that a fixed phase relationship not is feasible. The present invention has for its object to provide a method for controlling at least one electromagnetic pressure regulator via a pulse width modulation, by means of which a phase-shifted Ansteuemng multiple pressure regulator over a variable pulse width modulation frequency is made possible.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Varianten und Vorteile gehen aus den Unteransprüchen hervor.This object is solved by the features of patent claim 1. Other variants and advantages of the invention will become apparent from the dependent claims.
Demnach wird vorgeschlagen, dass die Pulsweitenmodulations-Fre- quenz nicht kontinuierlich, sondern in Stufen verändert wird, wobei die möglichen Frequenzwerte in einem derartigen Verhältnis zueinander stehen, dass eine feste Phasenbeziehung aller Frequenzen untereinander gegeben ist, so dass eine phasenverschobene Ansteuerung mehrerer Druckregler über eine variable Pulsweitenmodulations-Frequenz ermöglicht wirdAccordingly, it is proposed that the pulse width modulation frequency is not changed continuously but in steps, the possible frequency values being in such a relationship that a fixed phase relationship of all frequencies is given to each other, so that a phase-shifted control of several pressure regulators via one variable pulse width modulation frequency is enabled
Im Rahmen einer besonders vorteilhaften Variante des erfindungsgemäßen Verfahrens wird vorgeschlagen, die Pulsweitenmodulations-Frequenzen derart zu wählen, dass sie ein ganzzahliges Teil einer konstanten maximalen Frequenz (Basisfrequenz) sind. Beispielsweise können ausgehend von einer Basisfrequenz von 2000 Hz Pulsweitenmodulations-Frequenzen von 1000, 666 %, 500, 400, 333 Y3, 285 5/7 und/oder 250 Hz verwendet werden.In a particularly advantageous variant of the method according to the invention, it is proposed to select the pulse width modulation frequencies in such a way that they are an integral part of a constant maximum frequency (base frequency). For example, starting from a base frequency of 2000 Hz, pulse width modulation frequencies of 1000, 666%, 500, 400, 333 Y 3 , 285 5/7, and / or 250 Hz may be used.
Gemäß der Erfindung sind feinere Abstufungen der Pulsweitenmodulati- ons-Frequenzen möglich, falls dies erforderlich ist. Bevorzugterweise werden die Pulsweitenmodulations-Frequenzen bei der Ansteuerung der Druckregler aus der Menge der erfindungsgemäß möglichen Frequenzen in Abhängigkeit von der Öltemperatur und vom Arbeitspunkt (Druck) des Druckreglers gewählt. According to the invention, finer gradations of the pulse width modulating frequencies are possible, if necessary. Preferably, the pulse width modulation frequencies are selected in the control of the pressure regulator from the set of possible frequencies according to the invention as a function of the oil temperature and the operating point (pressure) of the pressure regulator.

Claims

Patentansprüche claims
1. Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation, dadurch gekennzeichnet, dass die Pulsweitenmodulations-Frequenz in Stufen verändert wird, wobei die möglichen Frequenzwerte in einem derartigen Verhältnis zueinander stehen, dass eine feste Phasenbeziehung aller Frequenzen untereinander gegeben ist, so dass eine phasenverschobene Ansteuerung mehrerer Druckregler über eine variable Pulsweitenmodulations-Frequenz ermöglicht wird.1. A method for controlling at least one electromagnetic pressure regulator via a pulse width modulation, characterized in that the pulse width modulation frequency is changed in stages, wherein the possible frequency values are in such a relationship to each other that a fixed phase relationship of all frequencies is given to each other, so that a phase-shifted control of several pressure regulators via a variable pulse width modulation frequency is made possible.
2. Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation nach Anspruch 1 , dadurch gekennzeichnet, dass die Pulsweitenmodulations-Frequenzen derart gewählt sind, dass sie ein ganzzahliges Teil einer konstanten maximalen Frequenz (Basisfrequenz) sind.2. A method for controlling at least one electromagnetic pressure regulator via a pulse width modulation according to claim 1, characterized in that the pulse width modulation frequencies are selected such that they are an integer part of a constant maximum frequency (base frequency).
3. Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation nach Anspruch 2, dadurch gekennzeichnet, dass als Basisfrequenz eine Frequenz von 2000 Hz gewählt wird, wobei Pulsweitenmodulations-Frequenzen von 1000, 666 %, 500, 400, 333 Vz, 2855/7 und/oder 250 Hz verwendbar sind.3. A method for controlling at least one electromagnetic pressure regulator via a pulse width modulation according to claim 2, characterized in that a frequency of 2000 Hz is selected as the base frequency, wherein pulse width modulation frequencies of 1000, 666%, 500, 400, 333 Vz, 2855/7 and / or 250 Hz are usable.
4. Verfahren zur Ansteuerung zumindest eines elektromagnetischen Druckreglers über eine Pulsweitenmodulation nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass die Pulsweitenmodulations-Frequen- zen bei der Ansteuerung der Druckregler aus der Menge der möglichen Frequenzen in Abhängigkeit von der Öltemperatur und vom Arbeitspunkt (Druck) des Druckreglers gewählt werden. 4. A method for controlling at least one electromagnetic pressure regulator via a pulse width modulation according to claim 1, 2 or 3, characterized in that the pulse width modulation frequencies in the control of the pressure regulator from the set of possible frequencies as a function of the oil temperature and the operating point ( Pressure) of the pressure regulator.
PCT/EP2006/002388 2005-03-22 2006-03-15 Method for driving at least one electromagnetic pressure regulator by means of pulse-width modulation WO2006099983A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510013136 DE102005013136A1 (en) 2005-03-22 2005-03-22 Method for controlling at least one electromagnetic pressure regulator via a pulse width modulation
DE102005013136.0 2005-03-22

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WO2006099983A1 true WO2006099983A1 (en) 2006-09-28

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251479A1 (en) * 1986-06-27 1988-01-07 Borg-Warner Automotive, Inc. Control systeem for controlling transmission fluid pressure
US4796853A (en) * 1987-12-22 1989-01-10 General Motors Corporation Remotely configurable solenoid driver circuit for direct pressure electronic transmission control
US5042328A (en) * 1988-08-25 1991-08-27 Mazda Motor Corporation Hydraulic transmission control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116107A (en) * 1984-11-09 1986-06-03 Hitachi Ltd Actuator controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251479A1 (en) * 1986-06-27 1988-01-07 Borg-Warner Automotive, Inc. Control systeem for controlling transmission fluid pressure
US4796853A (en) * 1987-12-22 1989-01-10 General Motors Corporation Remotely configurable solenoid driver circuit for direct pressure electronic transmission control
US5042328A (en) * 1988-08-25 1991-08-27 Mazda Motor Corporation Hydraulic transmission control system

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