DE102012212868A1 - Electronic control unit for suppression of vibration by clutch slip control in drive train of motor car, assigns predetermined amount of slip depends on amplitude of defined disturbance frequency or disturbance frequency bandwidth - Google Patents

Electronic control unit for suppression of vibration by clutch slip control in drive train of motor car, assigns predetermined amount of slip depends on amplitude of defined disturbance frequency or disturbance frequency bandwidth Download PDF

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Publication number
DE102012212868A1
DE102012212868A1 DE201210212868 DE102012212868A DE102012212868A1 DE 102012212868 A1 DE102012212868 A1 DE 102012212868A1 DE 201210212868 DE201210212868 DE 201210212868 DE 102012212868 A DE102012212868 A DE 102012212868A DE 102012212868 A1 DE102012212868 A1 DE 102012212868A1
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Prior art keywords
slip
disturbance frequency
control unit
electronic control
amplitude
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DE201210212868
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German (de)
Inventor
Felix Lins
Thomas Christ
Hubert Graf
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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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
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid 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
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10412—Transmission line of a vehicle
    • 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
    • F16D2500/304—Signal inputs from the clutch
    • F16D2500/30406—Clutch slip
    • 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
    • F16D2500/31—Signal inputs from the vehicle
    • 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
    • F16D2500/316—Other signal inputs not covered by the groups above
    • F16D2500/3163—Using the natural frequency of a component as input for the control
    • 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
    • F16D2500/502—Relating the clutch
    • F16D2500/50206—Creep control
    • 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
    • F16D2500/502—Relating the clutch
    • F16D2500/50293—Reduction of vibrations
    • 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
    • F16D2500/70422—Clutch parameters
    • F16D2500/70426—Clutch slip
    • 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
    • F16D2500/70492—Vehicle parameters
    • 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
    • F16D2500/71—Actions
    • F16D2500/7107—Others
    • F16D2500/7109—Pulsed signal; Generating or processing pulsed signals; PWM, width modulation, frequency or amplitude modulation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

The electronic control unit (7) has main portion that performs clutch slip control in the form of a function module so that the maximum clutch slip is variable. The clutch slip amount is reduced around predetermined amount. The predetermined amount of slip is assigned depends on the amplitude of defined disturbance frequency or disturbance frequency bandwidth, that is included in the vehicle vibrations determined measured by vibration characteristic signal.

Description

Die Erfindung bezieht sich auf eine elektronische Steuereinheit für ein Kraftfahrzeug zur Durchführung eines Verfahrens zur Unterdrückung von Fahrzeugschwingungen.The invention relates to an electronic control unit for a motor vehicle for carrying out a method for suppressing vehicle vibrations.

Beispielsweise aus der DE 102 23 467 A1 ist es bereits grundsätzlich bekannt, dass unkomfortable Fahrzeugschwingungen mittels einer Kupplungsschlupfregelung verringert werden können.For example, from the DE 102 23 467 A1 It is already known in principle that uncomfortable vehicle vibrations can be reduced by means of a clutch slip control.

Es ist Aufgabe der Erfindung, eine Kupplungsschlupfregelung zur Unterdrückung von unkomfortablen Fahrzeugschwingungen im Hinblick auf eine Reduzierung des Kraftstoffverbrauchs und/oder auf eine Verlängerung der Lebensdauer der Kupplung zu verbessern.It is an object of the invention to improve a clutch slip control for the suppression of uncomfortable vehicle vibrations in terms of reducing fuel consumption and / or prolonging the life of the clutch.

Diese Aufgabe wird erfindungsgemäß durch den Gegenstand des Patentanspruchs 1 gelöst. Die abhängigen Patentansprüche sind vorteilhafte Weiterbildungen der Erfindung.This object is achieved by the subject of claim 1. The dependent claims are advantageous developments of the invention.

Bei der erfindungsgemäßen elektronischen Steuereinheit für ein Kraftfahrzeug zur Durchführung eines Verfahrens zur Unterdrückung von Fahrzeugschwingungen mittels einer Kupplungsschlupfsteuerung im Antriebsstrang, ist die Kupplungsschlupfsteuerung in Form eines Funktionsmoduls in der elektronischen Steuereinheit enthalten und derart ausgestaltet, dass grundsätzlich ein maximaler Kupplungsschlupf vorsteuerbar ist, der um einen vorgegebenen Schlupfbetrag reduzierbar ist. Dabei ist der vorgegebene Schlupfbetrag abhängig von der Amplitude mindestens einer definierten Störfrequenz oder Störfrequenzbandbreite, die in den mittels eines schwingungscharakteristischen Gesamtsignals gemessenen Fahrzeugschwingungen enthalten ist, bestimmbar.In the electronic control unit according to the invention for a motor vehicle for carrying out a method for suppressing vehicle vibrations by means of a clutch slip control in the drive train, the clutch slip control is contained in the form of a functional module in the electronic control unit and designed such that in principle a maximum clutch slip can be pre-controlled by a predetermined Slip amount is reducible. In this case, the predetermined amount of slip is determinable as a function of the amplitude of at least one defined interference frequency or interference frequency bandwidth which is contained in the vehicle vibrations measured by means of a vibration-characteristic overall signal.

Vorzugsweise ist die Amplitude einer definierten Störfrequenz oder Störfrequenzbandbreite durch den Görtzel-Algorithmus mit integriertem Vergessensfaktor aus dem schwingungscharakteristischen Gesamtsignal ermittelbar. Der Görtzel-Algorithmus stellt ein schnelles digitales Filter als spezielle Form einer diskreten Fouriertransformation dar, mit dem anstelle aller diskreten Spektralkomponenten eines Gesamtsignals nur einzelne diskrete Spektralanteile, hier die definierten Störfrequenz, berechenbar sind. Hierdurch benötigt die elektronische Steuereinheit wenig Speicherplatz und geringen Rechenaufwand. Durch den „Vergessensfaktor” werden Störfrequenzen aus der Vergangenheit mit der Zeit wieder ignoriert.The amplitude of a defined interference frequency or interference frequency bandwidth can preferably be determined by the Görtzel algorithm with integrated forgetting factor from the overall oscillation characteristic signal. The Görtzel algorithm represents a fast digital filter as a special form of a discrete Fourier transformation, with which only individual discrete spectral components, in this case the defined interference frequency, can be calculated instead of all discrete spectral components of an overall signal. As a result, the electronic control unit requires little storage space and low computational effort. The "forgetting factor" ignores interference frequencies from the past over time.

Das schwingungscharakteristische Gesamtsignal kann insbesondere das Drehzahlsignal eines Antriebsmotors des Kraftfahrzeuges sein. Es kann aber beispielsweise auch ein akustisch mittels eines Fahrzeuginnenraummikrofons aufgenommenes Signal, ein modelliertes Momentsignal oder ein Klopfsensorsignal sein.The oscillation characteristic overall signal can in particular be the rotational speed signal of a drive motor of the motor vehicle. However, it can also be, for example, an acoustically recorded signal by means of a vehicle interior microphone, a modeled moment signal or a knock sensor signal.

Der Erfindung liegen folgende Überlegungen, Erkenntnisse und Ideen zugrunde:
Von einem Antriebsmotor, insbesondere von einem Verbrennungsmotor, können zeitweise ungewollte Schwingungen in den Antriebsstrang eingespeist werden, die sich als unkomfortable Fahrzeugschwingungen im Fahrgastraum bemerkbar machen. Diese Fahrzeugschwingungen kann ein Fahrgast oder Fahrer als Komfortproblem oder als Akustikproblem wahrnehmen. Zur Reduzierung derartiger Schwingungen wird mindestens eine Kupplung zum Einlegen eines Ganges oder eine Kupplung zur Trennung des Verbrennungsmotors vom Antriebsstrang in einen Schlupfzustand gebracht. Derzeit wird hierfür ein konstanter Schlupf eingestellt, der für den schlimmsten Fall ausgelegt wird. Daher wird in weniger schwingungsanfälligen Fahrzeugen zu viel Schlupf eingestellt, der sich nachteilig auf den Kraftstoffverbrauch und/oder auf den Kupplungsverschleiß auswirken kann.The invention is based on the following considerations, findings and ideas:
From a drive motor, in particular from an internal combustion engine, at times unwanted vibrations can be fed into the drive train, which are noticeable as uncomfortable vehicle vibrations in the passenger compartment. These vehicle vibrations can perceive a passenger or driver as a comfort problem or as an acoustic problem. To reduce such vibrations, at least one clutch for engaging a gear or a clutch for separating the internal combustion engine from the drive train is brought into a slip state. Currently, this is set to a constant slip, which is designed for the worst case. Therefore, in less susceptible vehicles too much slippage is set, which may adversely affect fuel consumption and / or clutch wear.

Daher wird erfindungsgemäß ausgehend von einem konstanten für den schlimmsten Fall ausgelegten Maximal-Schlupf ein Schlupfbetrag abgezogen, der abhängig von tatsächlich ermittelten Fahrzeugschwingungen vorgegeben wird.Therefore, according to the invention, based on a constant maximum slip designed for the worst case, a slip amount is subtracted which is predefined as a function of actually determined vehicle vibrations.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigtIn the drawing, an embodiment of the invention is shown. It shows

1 eine schematische Darstellung des Gesamtfahrzeuges mit den von der Erfindung betroffenen Hauptkomponenten, 1 a schematic representation of the entire vehicle with the main components affected by the invention,

2 eine schematische Darstellung der erfindungsgemäßen elektronischen Steuereinheit und 2 a schematic representation of the electronic control unit according to the invention and

3 eine Darstellung zur Erläuterung des hier angewandten Görtzel-Algorithmus. 3 a representation for explaining the Görtzel algorithm used here.

In 1 ist ein Kraftfahrzeug 1 mit einem Verbrennungsmotor 2, optional mit einem Elektromotor 3, mit einem Automatikgetriebe 4 und einer Kupplung 5 zur Trennung des Verbrennungsmotors 2 vom Antriebsstrang dargestellt. Das Automatikgetriebe 4 zeigt eine Kupplung 6, die exemplarisch für alle Kupplungen dargestellt ist, die für das Einlegen der verschiedenen Gänge im Getriebe 4 möglich sind. Das Automatikgetriebe 4 mit den Kupplungen 6 und die Kupplung 5, die auch ein Wandler sein kann, sind durch eine elektronische Steuereinheit 7 steuerbar. Dazu erhält die Steuereinheit 7 Eingangssignale, wie insbesondere die Drehzahl N und das Drehmoment MM des Verbrennungsmotors 2 direkt von Sensoren oder indirekt von anderen Steuergeräten. In 1 is a motor vehicle 1 with an internal combustion engine 2 , optionally with an electric motor 3 , with an automatic transmission 4 and a clutch 5 for the separation of the combustion engine 2 represented by the drive train. The automatic transmission 4 shows a clutch 6 , which is shown as an example for all clutches, for the insertion of the various gears in the transmission 4 possible are. The automatic transmission 4 with the couplings 6 and the clutch 5 , which can also be a converter, are controlled by an electronic control unit 7 taxable. The control unit receives this 7 Input signals, in particular the rotational speed N and the torque M M of the internal combustion engine 2 directly from sensors or indirectly from other controllers.

In 2 ist die elektronische Steuereinheit 7 genauer dargestellt. Sie enthält ein Funktionsmodul 8 zur Durchführung eines Verfahrens zur Unterdrückung von Fahrzeugschwingungen mittels einer Kupplungsschlupfsteuerung im Antriebsstrang. Dabei kann der Schlupf der Kupplung 5 und/oder einer Kupplung 6 in bekannter Weise durch Vorgabe eines Kupplungsmoments MK gesteuert werden.In 2 is the electronic control unit 7 shown in more detail. It contains a function module 8th for carrying out a method for suppressing vehicle vibrations by means of a clutch slip control in the drive train. In this case, the slip of the clutch 5 and / or a clutch 6 be controlled in a known manner by specifying a clutch torque M K.

Die Kupplungsschlupfsteuerung in Form des Funktionsmoduls 8 ist derart ausgestaltet (programmiert), dass grundsätzlich beispielsweise mittels eines abgespeicherten Kennfeldes 9 abhängig von der Drehzahl N und dem Drehmoment MM des Verbrennungsmotors 2 ein maximaler Kupplungsschlupf Smax vorgesteuert wird. Dieser maximale Kupplungsschlupf Smax wird um einen vorgegebenen Schlupfbetrag dS reduziert. Dieser vorgegebene Schlupfbetrag dS wird hierzu abhängig von der Amplitude Ai mindestens einer definierten Störfrequenz fi, die hier als ungewollte Fahrzeugschwingung in der gemessenen Drehzahl N als schwingungscharakteristisches Gesamtsignal enthalten ist, bestimmt. Es können mehrere derartige Störfrequenzen – hier f1 bis f3 – definiert werden.The clutch slip control in the form of the functional module 8th is configured (programmed) that basically, for example by means of a stored map 9 depending on the speed N and the torque M M of the internal combustion engine 2 a maximum clutch slip S max is pre-controlled. This maximum clutch slip S max is reduced by a predetermined amount of slip dS. For this purpose, this predetermined amount of slip dS is determined as a function of the amplitude A i of at least one defined interference frequency f i , which is contained here as unwanted vehicle vibration in the measured rotational speed N as a vibration characteristic overall signal. Several such interference frequencies - here f 1 to f 3 - can be defined.

Da die Drehzahl N ein sehr schnelles in Echtzeit gemessenes Signal ist, muss ein sehr schnelles Frequenzanalyseverfahren 12 gewählt werden. Daher wird in einer vorteilhaften Ausgestaltung der Erfindung die Amplitude Ai jeder definierten Störfrequenz f1 bis f3 durch den Görtzel-Algorithmus mit einem integrierten Vergessensfaktor λ aus dem schwingungscharakteristischen Drehzahlsignal N ermittelt. Der im Frequenzanalyseverfahren 12 verwendete Görtzel-Algorithmus ist durch 3 genauer beschrieben. 3 stellt im Wesentlichen die an sich bekannte Görtzel-Formel dar:

Figure DE102012212868A1_0002
mit Ai(–2) = Ai(–1) = 0
mit si(–2) = si(–1) = 0
mit ωi = 2·π·fi
mit i = 1, 2, 3
mit Ts = Abtastzeit
mit λ = Vergessensfaktor, wobei λ ∈ [0,9; 1]Since the speed N is a very fast signal measured in real time, a very fast frequency analysis procedure must be used 12 to get voted. Therefore, in an advantageous embodiment of the invention, the amplitude A i of each defined interference frequency f 1 to f 3 is determined by the Görtzel algorithm with an integrated forgetting factor λ from the vibration-characteristic speed signal N. The in the frequency analysis method 12 used Görtzel algorithm is through 3 described in more detail. 3 essentially represents the known Görtzel formula:
Figure DE102012212868A1_0002
with A i (-2) = A i (-1) = 0
with s i (-2) = s i (-1) = 0
with ω i = 2 · π · f i
with i = 1, 2, 3
with Ts = sampling time
with λ = forgetting factor, where λ ∈ [0.9; 1]

Die somit im Frequenzanalyseverfahren 12 ermittelten Amplituden A1 bis A3 der ermittelten definierten Störfrequenzen f1 bis f3 werden zur Ermittlung eines zu reduzierenden Schlupfbetrags dS vorzugsweise in einem Akustik-Kriterienblock 13 weiterverarbeitet. Hierbei können Amplitudenschwellwerte und/oder Frequenzprioritäten gesetzt werden.The thus in the frequency analysis method 12 determined amplitudes A 1 to A 3 of the determined defined interference frequencies f 1 to f 3 are to determine a slip amount to be reduced dS preferably in an acoustic criteria block 13 further processed. In this case, amplitude threshold values and / or frequency priorities can be set.

Der ermittelte Schlupfbetrag dS führt beispielsweise in Form einer Subtraktion oder in Form einer Multiplikation mit einem Faktor < 1 zu einer Reduzierung des maximalen Kupplungsschlupfes Smax. Der sich dann ergebende reduzierte Soll-Schlupf Ssoll geht beispielsweise in eine Vorsteuerung 10 ein und wird anschließend mit dem Ist-Schlupf Sist verarbeitet. Das Ergebnis wird einem Regler 11 zugeführt, der das zum Erreichen des angeforderten Schlupfes entsprechende Kupplungsmoment MK ermittelt und einstellt.The determined slip amount dS leads, for example in the form of a subtraction or in the form of a multiplication with a factor <1, to a reduction of the maximum clutch slip S max . The then resulting reduced target slip S is , for example, in a feedforward 10 and is then processed with the actual slip S is . The result becomes a regulator 11 supplied, which determines and adjusts the clutch torque M K corresponding to the required slip.

Erfindungswesentlich ist im Unterschied zum zumindest intern bekannten Verfahren der Block 14 im Funktionsmodul 8, in dem der zu reduzierende Schlupf dS in Abhängigkeit von den Amplituden Ai der vorher empirisch ermittelten und dann vorgegebenen Störfrequenzen fi berechnet wird.Essential to the invention, in contrast to at least internally known method of block 14 in the function module 8th in which the slip dS to be reduced is calculated as a function of the amplitudes A i of the previously empirically determined and then predetermined interference frequencies f i .

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 10223467 A1 [0002] DE 10223467 A1 [0002]

Claims (3)

Elektronische Steuereinheit (7) für ein Kraftfahrzeug (1) zur Durchführung eines Verfahrens zur Unterdrückung von Fahrzeugschwingungen mittels einer Kupplungsschlupfsteuerung im Antriebsstrang, wobei die Kupplungsschlupfsteuerung in Form eines Funktionsmoduls (8) derart ausgestaltet ist, dass grundsätzlich ein maximaler Kupplungsschlupf (Smax) vorsteuerbar ist, der um einen vorgegebenen Schlupfbetrag (dS) reduzierbar ist, wobei der vorgegebene Schlupfbetrag (dS) abhängig von der Amplitude (Ai) mindestens einer definierten Störfrequenz (fi), die in den mittels eines schwingungscharakteristischen Gesamtsignals (N) gemessenen Fahrzeugschwingungen enthalten ist, bestimmbar ist.Electronic control unit ( 7 ) for a motor vehicle ( 1 ) for carrying out a method for suppressing vehicle vibrations by means of a clutch slip control in the drive train, wherein the clutch slip control in the form of a functional module ( 8th ) is configured such that in principle a maximum clutch slip (S max ) can be pre-controlled, which is reducible by a predetermined slip amount (dS), wherein the predetermined slip amount (dS) depends on the amplitude (A i ) at least one defined interference frequency (f i ), which is contained in the vehicle vibrations measured by means of a vibration characteristic overall signal (N), can be determined. Elektronische Steuereinheit nach Patentanspruch 1, dadurch gekennzeichnet, dass die Amplitude (Ai) einer definierten Störfrequenz (fi) durch den Görtzel-Algorithmus mit integriertem Vergessensfaktor (λ) aus dem schwingungscharakteristischen Gesamtsignal (N) ermittelbar ist.Electronic control unit according to claim 1, characterized in that the amplitude (A i ) of a defined interference frequency (f i ) by the Görtzel algorithm with integrated forgetting factor (λ) from the vibration characteristic total signal (N) can be determined. Elektronische Steuereinheit nach einem der vorangegangenen Patentansprüche, dadurch gekennzeichnet, dass das schwingungscharakteristische Gesamtsignal (N) das Drehzahlsignal eines Antriebsmotors (2) des Kraftfahrzeuges (1) ist.Electronic control unit according to one of the preceding claims, characterized in that the vibration characteristic overall signal (N) the speed signal of a drive motor ( 2 ) of the motor vehicle ( 1 ).
DE201210212868 2012-07-23 2012-07-23 Electronic control unit for suppression of vibration by clutch slip control in drive train of motor car, assigns predetermined amount of slip depends on amplitude of defined disturbance frequency or disturbance frequency bandwidth Granted DE102012212868A1 (en)

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Citations (5)

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Publication number Priority date Publication date Assignee Title
DE3624755A1 (en) * 1986-07-22 1988-01-28 Sachs Systemtechnik Gmbh DRIVE DEVICE FOR A MOTOR VEHICLE
DE10223467A1 (en) 2001-06-05 2003-02-13 Luk Lamellen & Kupplungsbau Control of descent of a slope for vehicle fitted with an automatic clutch, uses gearbox rotational speed to trigger engagement and disengagement of the clutch and controls clutch to allow some slippage
DE10251620A1 (en) * 2002-11-06 2004-05-19 Bayerische Motoren Werke Ag Control device for automatic transmission gear, comprising at least one sensor checking level of vibration for appropriate adjusting of slip
DE112009001938T5 (en) * 2008-08-14 2012-09-06 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Detective algorithm for effective driveline vibrations in the transmission TCC slip control
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