WO2010118724A1 - Kupplungsparameter - Google Patents
Kupplungsparameter Download PDFInfo
- Publication number
- WO2010118724A1 WO2010118724A1 PCT/DE2010/000354 DE2010000354W WO2010118724A1 WO 2010118724 A1 WO2010118724 A1 WO 2010118724A1 DE 2010000354 W DE2010000354 W DE 2010000354W WO 2010118724 A1 WO2010118724 A1 WO 2010118724A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- determined
- torque
- hysteresis
- friction
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
-
- 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
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction clutch
-
- 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
- F16D2500/30402—Clutch friction coefficient
-
- 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
- F16D2500/50236—Adaptations of the clutch characteristics, e.g. curve clutch capacity torque - clutch actuator displacement
-
- 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
- F16D2500/50245—Calibration or recalibration of the clutch touch-point
- F16D2500/50248—During assembly
Definitions
- the invention relates to a method having the features according to the preamble of claim 1 and a device having the features according to the preamble of claim 12.
- the transferable torque of a clutch can be determined according to the prior art from a hysteresis characteristic curve of the clutch position and the speed of the clutch actuator.
- the hysteresis characteristic is based on a simple nominal characteristic which is characterized by the following parameters:
- Touch point Corresponds to the coupling position at which 5 Nm torque can be transmitted.
- Coefficient of friction Scaling factor with which the slope of the characteristic above the moment at the touch point can be changed.
- Form factors Scaling factors with which the torque values at the support points above the touch point can be changed.
- the characteristic is influenced by two further factors:
- Position hysteresis Represents a parallel shift of the modified nominal characteristic in the position direction as a function of the speed of the clutch actuator.
- Torque hysteresis superimposes a torque-dependent scaling on the parallel shift of the modified nominal characteristic in the position direction. This can be achieved at higher moments a larger hysteresis width.
- FIGS. 1 to 3 show the effects of the form factors, the position hysteresis and the torque hysteresis on the characteristic curve.
- the filled marker represents the support point that corresponds to the touch point.
- FIG. 1 shows the effects of the form factors (characteristic curve 20) on the nominal characteristic curve 10.
- the tactile points, the coefficients of friction, the shape factors and the two hysteresis factors are adapted by algorithms for both clutches.
- the characteristic curve shown in FIG. 3 according to the characteristic curves 40 shown is used for the evaluation of the moment as a function of the position and the determination of the position from the moment according to the prior art.
- the invention has for its object to further enhance ride comfort, especially immediately after the first commissioning of a new car by the customer.
- the object is achieved by a method having the features according to claim 1 and a device having the features according to claim 12.
- the method according to the invention provides for the determination of clutch parameters during initial startup of a friction clutch in a motor vehicle, wherein in a first phase the clutch is moved from an open to a closed and back to an open state at a given, constant slip of the clutch (when torque transmission is present) , During movement, the position of the clutch is determined and stored when predetermined clutch torque thresholds are reached.
- a second phase in a first step from the positions determined a touch point, a position hysteresis and a torque hysteresis and in a second step a provisional coefficient of friction and in a third step provisional form factors and in a fourth step a final coefficient of friction and in a fifth step final Form factors determined.
- the clutch torque threshold values are distributed equidistantly over the clutch torque range available through the clutch.
- the touch point is determined in a preferred embodiment of the average of the endpoints of the hysteresis width for the smallest clutch torque threshold.
- the position hysteresis is determined in a preferred embodiment from the average of several hysteresis widths for small clutch torque thresholds.
- the torque hysteresis is determined in a preferred embodiment from the average of several hysteresis widths for large clutch torque thresholds. - A -
- the provisional coefficient of friction is determined in a preferred embodiment from the mean value of the determined positions of the end points of the hysteresis width of the largest coupling torque threshold values.
- the provisional friction value determined and the nominal clutch characteristic curve in a preferred embodiment the scaled clutch characteristic curve will be determined without form factor.
- the preliminary form factors are determined in a preferred embodiment from the ratio of the torque values at the support points of the scaled clutch characteristic curve without form factors and the associated torque values of the characteristic line of the hysteresis center points.
- the final coefficient of friction is determined in a preferred embodiment from the provisional coefficient of friction by correction by a factor in which the mean of the provisional form factors is received.
- the preliminary form factors are corrected for the mean of the preliminary shape factors by subtracting the averaged value and scaling the resulting values by a factor such that the values resulting from scaling satisfy predetermined conditions and are the final shape factors ,
- the predetermined conditions are that the final form factors within a band are distributed around zero and differences between two form factors are also distributed in a band around zero.
- a device is also proposed with a control device for determining clutch parameters when first starting up a friction clutch in a motor vehicle.
- the control device is provided so that in a first phase, the clutch is moved from an open to a closed and back to an open state at a given, constant slip of the clutch when torque transmission is present.
- the position of the clutch is determined and stored when predetermined clutch torque thresholds are reached.
- a second phase in a first step from the positions determined a touch point, a position hysteresis and a torque hysteresis and in a second step a provisional coefficient of friction and in a third step provisional form factors and in a fourth step, a final coefficient of friction and determined in a fifth step final form factors.
- the invention serves to determine the coupling parameters at the end of the belt on a transmission test bench.
- the vehicle already has very good driving characteristics, especially immediately after the first startup of the new car by the customer.
- Figure 4 and Figure 5 show curves when determining the coupling parameters.
- the clutch When ramping the clutch by successively increasing the position, the torque will inevitably have to increase, as constant slip is given.
- the clutch is closed up to a maximum torque. It is going to the whole Available torque range defines a fixed number of equidistantly distributed torque thresholds. If the measured torque exceeds the torque threshold, the associated current clutch position is stored. When the clutch is opened, falling below the torque thresholds is used to determine the corresponding position.
- FIG. 4 shows the nominal clutch characteristic (curve 110) and the measured clutch torque (curve 130). The positions found at the torque thresholds are clearly highlighted with endpoints of the hysteresis width (points 100) in FIG. These points are the direct result of the evaluation in phase 1.
- Step 1 Determination of the touch point, the position and the torque hysteresis
- the touch point is calculated from the mean value of the endpoints of the hysteresis width for the lowest torque threshold. Alternatively, one can consider several torque thresholds near the touch-point torque, and be aware of the result to be less sensitive to measurement noise.
- the position hysteresis is determined from the mean value of several hysteresis ranges in the lower torque range.
- the averaging makes the determination of the parameters again less sensitive to measurement noise.
- the choice of the torque thresholds in the lower torque range results from the fact that the hysteresis width in the upper region can again become smaller, and thus becomes smaller.
- the determination of the position hysteresis will always fail due to the smallest hysteresis width.
- the hysteresis widths will always be narrower in the upper range at the transition from the rising to the falling branch of the hysteresis than in the middle range.
- the position or moment calculation based on the curves shown in Figure 3 takes into account this behavior in the control unit software.
- the torque hysteresis is determined from the mean value of several hysteresis ranges in the upper torque range. Again, the averaging makes the detection less sensitive to measurement noise. Step 2: Determination of a provisional coefficient of friction
- the provisional friction coefficient is calculated from the mean of the positions of the endpoints of the hysteresis width for the highest torque threshold. Alternatively, one can consider several torque thresholds near the uppermost torque threshold and report the result in order to become less sensitive to measurement noise.
- the nominal clutch characteristic (curve 110) can be changed.
- the touch point causes a shift in the position direction and the coefficient of friction a scaling above the moment of contact.
- the nominal clutch characteristic (curve 110) is compressed or stretched so that it goes through this average of the endpoints of the hysteresis width of the uppermost torque threshold.
- the coefficient of friction corresponds to a scaling factor.
- the nominal coefficient of friction may have a value of 270, for example
- Step 3 Determination of the preliminary form factors
- Form factors are calculated for the moment reference points of the nominal curve above the touch point. These result from the ratio of the torque values at the support points of the scaled clutch characteristic curve without form factors and the associated torque values of the characteristic curve of the hysteresis center points (FIG. 4, curve 120).
- the first form factor is determined from the second form factor by halving.
- the mean value is first determined.
- Step 4 Determination of the final coefficient of friction.
- the provisional coefficient of friction is corrected by the mean of the provisional form factors by multiplying the provisional coefficient of friction by a factor.
- the mean of the provisional form factors e.g. as a percentage change
- Step 5 Determine the final form factors.
- the preliminary shape factors are also corrected by the mean of the preliminary shape factors by subtracting the determined average.
- the result is then scaled by a factor, so that e.g. Points 1 and 2 of the specific conditions for the final form factors are met.
- FIG. 5 shows the opening and closing branches of the hystereses (curve 220, curve 230) as they result after application of the position and torque hysteresis to the scaled clutch characteristic with shape factors (curve 210).
- the torque thresholds are not distributed equidistantly over the entire area, but z. B. to the touch moment or other significant points, such as the range in which the torque hysteresis is evaluated to choose denser distances at the torque thresholds. In this case, a minimum distance should be ensured, so that sufficient measurement data for determining the positions are available.
- the clutch characteristic can be evaluated offline on a test bench computer in the manner described above and the parameters are then recorded via an interface in the control unit.
- the customer starts a diagnostic service that causes the clutch to close on the test bench with constant controlled slip.
- the ECU software takes on measurement data - with the typical control unit problems of limited memory and limited runtime - and determines the coupling parameters for the touch point, the coefficient of friction, the position and the torque hysteresis, as well as the form factors by the described method. The parameters are taken over when the control unit shuts down in the EEprom memory. During the first drive, all parameters of the clutch model are optimally stored and allow a very pleasant test drive of the end customer.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010001657.7T DE112010001657B4 (de) | 2009-04-17 | 2010-03-25 | Verfahren und Vorrichtung zur Ermittlung von Kupplungsparametern |
KR1020117024200A KR101774599B1 (ko) | 2009-04-17 | 2010-03-25 | 클러치 파라미터 |
US13/272,375 US8892322B2 (en) | 2009-04-17 | 2011-10-13 | Clutch parameters |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009017557.1 | 2009-04-17 | ||
DE102009017557 | 2009-04-17 | ||
DE102009030440 | 2009-06-25 | ||
DE102009030440.1 | 2009-06-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/272,375 Continuation US8892322B2 (en) | 2009-04-17 | 2011-10-13 | Clutch parameters |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010118724A1 true WO2010118724A1 (de) | 2010-10-21 |
Family
ID=42316073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/000354 WO2010118724A1 (de) | 2009-04-17 | 2010-03-25 | Kupplungsparameter |
Country Status (4)
Country | Link |
---|---|
US (1) | US8892322B2 (de) |
KR (1) | KR101774599B1 (de) |
DE (2) | DE102010012756A1 (de) |
WO (1) | WO2010118724A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103477107A (zh) * | 2011-04-15 | 2013-12-25 | 舍弗勒技术股份两合公司 | 用于离合器参数适配的方法 |
CN103837341A (zh) * | 2014-01-24 | 2014-06-04 | 中国北方车辆研究所 | 通过变接触刚度测试获取摩擦片齿部周向载荷分布的方法 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011103474B4 (de) | 2010-06-24 | 2023-04-20 | Schaeffler Technologies AG & Co. KG | Verfahren zur Ermittlung von Kupplungsparametern, insbesondere von Kupplungshystereseparametern, bei der Erstinbetriebnahme einer Kupplung auf einem Getriebeprüfstand |
DE102011081210A1 (de) | 2010-09-09 | 2012-03-15 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Ermittlung von Kupplungsparametern |
WO2012139547A1 (de) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur inbetriebnahme einer kupplung |
DE112013001098B4 (de) * | 2012-02-22 | 2019-04-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur Steuerung einer Reibungskupplung |
CN104160170B (zh) * | 2012-03-12 | 2017-06-20 | 舍弗勒技术股份两合公司 | 用于启动摩擦离合器的方法 |
DE102013213900A1 (de) | 2012-07-17 | 2014-01-23 | Schaeffler Technologies AG & Co. KG | Verfahren zur Ermittlung von Parametern einer Reibungskupplungseinrichtung |
US9488267B2 (en) * | 2012-09-14 | 2016-11-08 | Ford Global Technologies, Llc | Line pressure control with input shaft torque measurement |
KR101393872B1 (ko) | 2012-10-30 | 2014-05-12 | 기아자동차주식회사 | 차량의 건식클러치 전달토크 예측 방법 |
CN105143701B (zh) * | 2013-04-25 | 2017-10-03 | 舍弗勒技术股份两合公司 | 用于确定离合器操作的滞后的方法 |
DE102015218691A1 (de) | 2014-10-28 | 2016-04-28 | Schaeffler Technologies AG & Co. KG | Verfahren zur Bestimmung eines Reibwertes einer Kupplung eines Doppelkupplungsgetriebesystems |
DE102015210635B4 (de) * | 2015-06-10 | 2017-05-04 | Zf Friedrichshafen Ag | Verfahren zum Einstellen von Initialreibwerten von Schaltelementen eines Getriebes |
US10874208B1 (en) | 2019-08-01 | 2020-12-29 | CKnapp Sales, Inc. | Adjustable laptop mount |
CN111677783B (zh) * | 2020-05-08 | 2021-11-02 | 中国北方车辆研究所 | 一种离合器滑磨点初始位置参数阈值的标定方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10201982A1 (de) * | 2001-01-24 | 2002-07-25 | Luk Lamellen & Kupplungsbau | Verfahren zum Steuern und/oder Regeln einer Automatisierten Kupplung eines Fahrzeuges |
US20050257632A1 (en) * | 2004-05-21 | 2005-11-24 | Runde Jeffrey K | Method of determining initial transmission calibration |
DE102006008755A1 (de) * | 2006-02-24 | 2007-08-30 | Daimlerchrysler Ag | Verfahren und Einrichtung zur Ansteuerung einer Reibungskupplung eines lastschaltbaren automatischen Getriebes eines Kraftfahrzeugs |
EP2116736A2 (de) * | 2008-05-09 | 2009-11-11 | ZF Friedrichshafen AG | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4223255B2 (ja) * | 2002-09-24 | 2009-02-12 | 富士重工業株式会社 | 4輪駆動車のスリップ制御装置 |
EP1467127B1 (de) * | 2003-04-08 | 2019-05-29 | Getrag Ford Transmissions GmbH | Mehrstufenwechselgetriebe sowie Verfahren zu dessen Steuerung |
-
2010
- 2010-03-25 WO PCT/DE2010/000354 patent/WO2010118724A1/de active Application Filing
- 2010-03-25 DE DE102010012756A patent/DE102010012756A1/de not_active Withdrawn
- 2010-03-25 DE DE112010001657.7T patent/DE112010001657B4/de active Active
- 2010-03-25 KR KR1020117024200A patent/KR101774599B1/ko active IP Right Grant
-
2011
- 2011-10-13 US US13/272,375 patent/US8892322B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10201982A1 (de) * | 2001-01-24 | 2002-07-25 | Luk Lamellen & Kupplungsbau | Verfahren zum Steuern und/oder Regeln einer Automatisierten Kupplung eines Fahrzeuges |
US20050257632A1 (en) * | 2004-05-21 | 2005-11-24 | Runde Jeffrey K | Method of determining initial transmission calibration |
DE102006008755A1 (de) * | 2006-02-24 | 2007-08-30 | Daimlerchrysler Ag | Verfahren und Einrichtung zur Ansteuerung einer Reibungskupplung eines lastschaltbaren automatischen Getriebes eines Kraftfahrzeugs |
EP2116736A2 (de) * | 2008-05-09 | 2009-11-11 | ZF Friedrichshafen AG | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103477107A (zh) * | 2011-04-15 | 2013-12-25 | 舍弗勒技术股份两合公司 | 用于离合器参数适配的方法 |
CN103477107B (zh) * | 2011-04-15 | 2016-10-05 | 舍弗勒技术股份两合公司 | 用于离合器参数适配的方法 |
CN103837341A (zh) * | 2014-01-24 | 2014-06-04 | 中国北方车辆研究所 | 通过变接触刚度测试获取摩擦片齿部周向载荷分布的方法 |
Also Published As
Publication number | Publication date |
---|---|
US20130116902A1 (en) | 2013-05-09 |
KR101774599B1 (ko) | 2017-09-04 |
US8892322B2 (en) | 2014-11-18 |
DE112010001657B4 (de) | 2019-12-19 |
KR20120002588A (ko) | 2012-01-06 |
DE102010012756A1 (de) | 2010-10-21 |
DE112010001657A5 (de) | 2012-12-20 |
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