WO2007059899A1 - Procede de correction d'erreur d'un dispositif de reglage d'un vehicule automobile et dispositif de reglage d'un vehicule automobile - Google Patents

Procede de correction d'erreur d'un dispositif de reglage d'un vehicule automobile et dispositif de reglage d'un vehicule automobile Download PDF

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Publication number
WO2007059899A1
WO2007059899A1 PCT/EP2006/011058 EP2006011058W WO2007059899A1 WO 2007059899 A1 WO2007059899 A1 WO 2007059899A1 EP 2006011058 W EP2006011058 W EP 2006011058W WO 2007059899 A1 WO2007059899 A1 WO 2007059899A1
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WO
WIPO (PCT)
Prior art keywords
representation
value
measured value
information
hysteresis
Prior art date
Application number
PCT/EP2006/011058
Other languages
German (de)
English (en)
Inventor
Adrian Cutean
Wolfgang Tausch
Original Assignee
Johnson Controls Automotive Electronics Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Controls Automotive Electronics Gmbh filed Critical Johnson Controls Automotive Electronics Gmbh
Publication of WO2007059899A1 publication Critical patent/WO2007059899A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D2213/00—Indexing scheme relating to constructional details of indicators
    • G01D2213/10—Drivers for gauges

Definitions

  • the present invention relates to a method for error correction of a setting device in a motor vehicle, wherein a conversion of a measured value or control value information from a first representation is carried out in a second representation.
  • the invention has for its object to provide a method for error correction of a setting device in a motor vehicle, which at relatively low cost high precision conversion of measured value or control value information from a first representation in a second representation is possible.
  • This object is achieved by a method for error correction of a setting device in a motor vehicle, wherein the first representation mechanically and the second representation numerically or wherein the first representation is numerical and the second representation mechanically, one in the conversion of the first representation to the second representation occurring hysteresis effect is compensated prognostically.
  • a method for error correction of a setting device in a motor vehicle wherein the first representation mechanically and the second representation numerically or wherein the first representation is numerical and the second representation mechanically, one in the conversion of the first representation to the second representation occurring hysteresis effect is compensated prognostically.
  • a predetermined hysteresis correction value is added to or subtracted from the measured value or set value information.
  • a deterioration of the precision is possibly brought about, however, results in a higher precision in the overall behavior.
  • a later value of the measured value or setpoint information is formed taking into account a previous direction of change for setting the earlier value and taking into account a later direction of change for setting the later value starting from the previous value becomes.
  • a later measured value of the measured value or manipulated variable information is taken into account, taking into account any due to any number of gender changes of the measured value or set value information formed accumulated change is formed.
  • the hysteresis correction value it is further preferred for the hysteresis correction value to be added or subtracted from the measured value or setpoint information only if the accumulated change is recognized as being large enough.
  • hysteresis correction it is advantageously possible according to the invention for hysteresis correction not to generate any additional errors in the conversion of the measured value or position value information from the first representation into the second representation.
  • the accumulated change is recognized as large enough if it is greater than the hysteresis correction value. This prevents overcompensation of the hysteresis error with concomitant deterioration of the precision of the adjustment device.
  • the hysteresis correction value corresponds to approximately 30% to 70%, preferably approximately 50%, of the maximum possible hysteresis error.
  • a further subject of the present invention is a motor vehicle adjusting device for error correction for carrying out a method according to the invention, wherein the vehicle setting device is provided for converting measured value information from a first representation into a second representation, wherein the first representation is mechanical or the second representation is numerical or the first representation is numerical and the second representation is mechanical, wherein a hysteresis effect occurring in the conversion of the first representation to the second representation can be compensated.
  • the precision of the motor vehicle adjusting device or the display device is increased, so that either an accurate display of the measured value or control value information is possible or with the same precision a lesser, in particular mechanical Effort must be operated, which reduces the cost of the KraftGermaninstellvorraum.
  • FIG. 1 shows the schematic basic representation of the conversion of a measured value or manipulated variable information from a first representation in a second representation.
  • Figure 2 shows a preferred embodiment of the conversion of the measured value or control value information on the example of a speed information.
  • FIG. 3 shows a schematic flow chart representation for carrying out the method according to the invention for error correction.
  • FIG. 4 shows a schematic block diagram of a motor vehicle adjusting device according to the invention for error correction.
  • FIG. 5 shows an example for the conversion of the first representation of the measured value or control value information into the second representation in order to illustrate the correction requirement.
  • FIG. 1 schematically shows the conversion of a measured value or set value information 100 from a first representation 110 into a second representation 130.
  • a measured value recording device 10 the measured value or manipulated variable information 100 is recorded in a first representation 110, for example in the form of a signal of different frequencies, wherein the frequency corresponds to the value of the measured value or setpoint information 100 about a speed or an engine speed.
  • the measured value recording device 10 is connected to an adjustment device 20, which converts the first representation 110 of the measured value or set value information 100 with a view to the second representation 130.
  • an adjustment device 20 which converts the first representation 110 of the measured value or set value information 100 with a view to the second representation 130.
  • a display device 30 for example in the form of a pointer instrument.
  • the display device 30 it is also possible for the display device 30 to be an actuator which is actuated by the setting device 20, wherein the measured value or setpoint information tion 100 is about the opening degree of a sunroof, the setting of a part of an air conditioner or a similar size.
  • the measured value or setting value information 100 between the first representation 110 and the second representation 130 is converted as precisely as possible by taking account of the characteristics of the measured value display device and the display device 30 or of the actuator 30 by means of the error correction method according to the invention.
  • a mechanical interface is present at one point of this conversion chain, ie either the first representation 110 is mechanical and the second representation 130 numerically / electronically or vice versa that the first representation 110 is numerical and the second representation 130 is mechanical.
  • a numerical representation of the measured value or setpoint information 100 is the case in which the measured value or setpoint information 100 is present in electrically processable form, for example by means of a pulse width modulation signal or by means of a frequency-variable signal or by means of a binary word or the like.
  • the conversion of such a measured value or control value information 100 by means of mechanical components usually entails that, apart from linear deviations, proportional deviations and thermal deviations, further sources of error are present which have very complex and poorly compensated relationships.
  • a hysteresis effect occurs in the case of a mechanical component, which moreover can have a different absolute size depending on the different operating state. Influencing factors for this include, inter alia, the temperature, the tolerances in the mechanical part in the system and the like.
  • hysteresis effects occur in transmissions where there is a backlash in a pointer driven by a stepper motor, for example, where the backlash plays a significant role in overall system tolerance.
  • This hysteresis effect is not or only very difficult to adjust, because it is neither constant nor proportional.
  • Such a hysteresis effect or hysteresis error has, for example, the following dependencies: It depends on the direction of movement starting from the last position taken. Furthermore, it depends on the last position taken. Furthermore, the hysteresis deviation is dependent on the movement speed. In this case, the hysteresis effect is essentially caused by mechanical tolerances, which can be described in particular in transmissions or the like transmission measures by multiply superimposed particle functions. Furthermore, the hysteresis error is dependent on the temperature, the material expansion, the viscosity of materials such as lubricants or the like and the state of wear of the plant. According to the invention, a prognostic hysteresis correction is made in such a conversion of measured value or set value information 100.
  • FIG. 2 shows an exemplary embodiment of an overall system consisting of the measured value recording device 10, the setting device 20 and the display device 30.
  • the display device 30 comprises in the illustrated embodiment, for example, a pointer instrument 32 for displaying the speed of a vehicle and a stepper motor 31, which actuates the pointer of the display device 32.
  • the stepping motor 31 is driven by the adjusting device 20 according to the invention.
  • the first representation 110 of the measured value or setpoint value information 100 is fed to the measured value recording device 10.
  • the adjusting device 20 according to the invention which is also referred to below as the device 20 according to the invention or as the motor vehicle adjusting device 20 according to the invention, picks up the value of the measured value or manipulated value information 100 from the measured value recording device 10 and controls the stepping motor 31 in such a way that the measured value or manipulated variable information 100 in its second representation 130 is displayed correctly on the display device 30. If the display device 30 is an actuation device 30, the conversion of the measured value or control value information 100 from its first representation 110 into its second 130 is likewise carried out according to the invention with high precision.
  • FIG. 3 shows a schematic diagram of a flow chart for converting the first representation 110 into the second representation 130 of the measured value or setpoint information 100.
  • the conversion is not a continuously operating, quasi-instantaneous conversion from the first representation 110 into the second representation of the measured value or setpoint information 100, but that the conversion is a time-staggered transformation with successive sampling times, wherein a previous value 131 of the measured value or set value information 100 converted to the second representation 130 is followed by a later value 132 of the second representation 130 of the measured value or setpoint information 100.
  • the earlier value 131 and the later value 132 correspond as closely as possible to a corresponding, but not shown, earlier or later value of the measured value or control value information 100 in its first representation 110.
  • FIG. 3 illustrates the method according to the invention for error correction assumes that in a previous evaluation or correction step (sampling time) at an end point 202, the earlier value 131 is present, so that with the aid of the earlier value 131 and taking into account the further development of the first representation 110 of the measured value or control value information 100 of later value 132 is to be generated or generated.
  • a first method step 210 which adjoins a starting point 201 of the method, it is determined in which direction the measured value or setpoint information 100 develops between the earlier value 131 and the later value 132 in comparison with a change immediately before the previous value 131.
  • a second method step 220 it is checked whether the direction of change has changed before and after the previous value 131.
  • a branch is made to a fourth method step 240. If this is not the case, a branch is made to a third method step 230. In the third method step 230, it is checked whether a hysteresis compensation has been carried out by addition or subtraction of a hysteresis correction value in the previous step or not. If this is the case, a branch is made to a seventh method step 270. If this is not the case, a branch is made to the fourth method step 240. In the fourth method step 240, the past changes are accumulated and a branch is made to a fifth method step 250.
  • the fifth method step 250 it is decided whether the accumulated changes or the accumulated change of the Measured value or setpoint information 100 during the past time since the last addition or subtraction of the hysteresis correction value is greater than the predetermined hysteresis correction value. If this is the case, a branch is made to a sixth method step 260, otherwise a branch is made to the seventh method step 270.
  • the sixth method step 260 the error correction of the later value 132 is performed.
  • the predetermined hysteresis correction value which is signed, is added to the measured value supplied starting from the first representation 110, ie, either added or subtracted, depending on which sign of the sign has a hysteresis correction value.
  • the memory for storing the accumulated change is initialized and it is stored that a hysteresis correction has been performed, so that this can be utilized in the third method step 230.
  • the method then branches to the sixth method step 260 for the seventh method step, in which the later value 132 is output.
  • the method for error correction is then run through again, wherein the later value now plays the role of the former value and wherein a later direction of change 134 now plays the role of an earlier direction of change 133.
  • FIG. 4 shows a schematic block diagram of a motor vehicle adjusting device 20 according to the invention.
  • a motor vehicle adjusting device 20 comprises, in particular, a microcontroller 21 or other control means 21, to which a memory 22 is assigned, which is designed as a read-write memory.
  • a microcontroller 21 or other control means 21 to which a memory 22 is assigned, which is designed as a read-write memory.
  • This makes it possible, starting from a voltage applied to the input 25 of the setting 20 Meßwert- or Stellwertinformation 100 in its first representation 110 at predetermined time intervals at an output 26 of the adjustment 20, the previous value 131 and the later value 132 of the second representation 130th the measured value or control value information 100 output.
  • the method for error correction according to FIG. 3 is used, in which memory 22 the previous direction of change 133, the later direction of change 134, the earlier value 131 and the accumulated change are stored.
  • FIG. 5 shows a diagram for a better illustration of the procedure of the error correction method according to the invention.
  • a variation scheme of the measured value or control value information 100 is shown, wherein the first representation 110 differs from the second representation 130.
  • this difference results in an error in the second representation 130 relative to the first representation 110.
  • Such an error is illustrated in two places in FIG. 5 labeled H, and in the context of the present invention becomes, in particular, a hysteresis error or hysteresis Effect designates.
  • the second representation 130 does not follow the first representation 110 to the same extent, in particular after a change of direction of the course of the first representation of the measured value or manipulated variable information 100.
  • the earlier value 131 and the later value 132 of the second representation 130 are shown for a first time t1 and a second time t2 (second sampling point).
  • first time t1 ie before the calculation of the earlier value 131
  • the measured value or set value information 100 has changed according to an earlier direction of change 133 and that between the earlier value 131 and the later value 132 of the measured value or Control value information 100 has moved the measured value or manipulated variable information 100 according to a later change direction 134.
  • the method according to the invention for error correction starts at the position of the calculation or the output of the later value 132, in which case the hysteresis correction value (not shown) is deducted prognostically from the obtained value of the measured value or setpoint information 100, so that the corrected value is subtracted later value 132 has a lower error compared to the uncorrected later value 132 ' .
  • the measured value or set value information 100 has changed in such a way that, for example, a stepping motor 50 steps forward would have to be set to display the later value 132.
  • the maximum possible hysteresis error is 14 steps.
  • the setting device 20 does not forward the step number of 50 steps to the display device 30, but a prognostically compensated number of, for example, 57 steps, ie the hysteresis correction value is 7 steps in this example.
  • a prognostically compensated number of, for example, 57 steps ie the hysteresis correction value is 7 steps in this example.
  • the hysteresis correction value can be provided to to adapt to different temperatures or operating hours or the like v to account for a change in the maximum possible hysteresis.

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  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

L'invention concerne un procédé de correction d'erreur d'un dispositif de réglage d'un véhicule automobile et un dispositif de réglage de véhicule automobile destiné à la correction d'erreur. Une donnée valeur de mesure ou une donnée valeur de réglage est convertie d'une première représentation à une deuxième représentation, la première représentation étant mécanique et la deuxième représentation étant numérique ou bien la première représentation est numérique et la deuxième représentation est mécanique. Un effet d'hystérèse survenant lors de la conversion de la première représentation en la deuxième représentation est compensé.
PCT/EP2006/011058 2005-11-22 2006-11-17 Procede de correction d'erreur d'un dispositif de reglage d'un vehicule automobile et dispositif de reglage d'un vehicule automobile WO2007059899A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055910.7 2005-11-22
DE102005055910A DE102005055910B4 (de) 2005-11-22 2005-11-22 Verfahren zur Fehlerkorrektur einer Einstellvorrichtung in einem Kraftfahrzeug und Einstellvorrichtung in einem Kraftfahrzeug

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WO2007059899A1 true WO2007059899A1 (fr) 2007-05-31

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PCT/EP2006/011058 WO2007059899A1 (fr) 2005-11-22 2006-11-17 Procede de correction d'erreur d'un dispositif de reglage d'un vehicule automobile et dispositif de reglage d'un vehicule automobile

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DE (1) DE102005055910B4 (fr)
WO (1) WO2007059899A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3489085B1 (fr) * 2017-11-22 2021-12-29 ZKW Group GmbH Procédé de réglage d'un dispositif de commande

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5635622A (en) * 1995-10-27 1997-06-03 Delco Electronics Corporation Method of compensating for gauge hysteresis
JP2004347456A (ja) * 2003-05-22 2004-12-09 Calsonic Kansei Corp 指示計器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2038404C (fr) * 1990-05-16 1995-08-22 Neil C. Griffen Methode et appareil de pesage a compensation d'hysteresis
US5359284A (en) * 1992-09-14 1994-10-25 Delco Electronics Corp. Air core gauge magnetic hysteresis compensation
DE4426971A1 (de) * 1994-07-29 1996-02-01 Bosch Gmbh Robert Verfahren und Vorrichtung zur Positionierung einer Verstelleinrichtung in einem Fahrzeug
DE10053667A1 (de) * 2000-10-28 2002-05-08 Schenck Process Gmbh Verfahren und Vorrichtung zur Hysteresekorrektur von Meßwerten bei Aufnehmern mit Dehnungsmeßstreifen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5635622A (en) * 1995-10-27 1997-06-03 Delco Electronics Corporation Method of compensating for gauge hysteresis
JP2004347456A (ja) * 2003-05-22 2004-12-09 Calsonic Kansei Corp 指示計器

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DE102005055910B4 (de) 2010-04-22

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