WO2012139546A1 - Verfahren zur adaption von parametern einer kupplung - Google Patents
Verfahren zur adaption von parametern einer kupplung Download PDFInfo
- Publication number
- WO2012139546A1 WO2012139546A1 PCT/DE2012/000322 DE2012000322W WO2012139546A1 WO 2012139546 A1 WO2012139546 A1 WO 2012139546A1 DE 2012000322 W DE2012000322 W DE 2012000322W WO 2012139546 A1 WO2012139546 A1 WO 2012139546A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- pressure
- determined
- path
- parameters
- Prior art date
Links
Classifications
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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
- F16D29/00—Clutches and systems of clutches involving both fluid and magnetic actuation
- F16D29/005—Clutches and systems of clutches involving both fluid and magnetic actuation with a fluid pressure piston driven by an electric motor
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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
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
-
- 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
- F16D48/02—Control by fluid pressure
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
- F16D2048/0251—Electric motor driving a piston, e.g. for actuating the master cylinder
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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
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
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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
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/108—Gear
- F16D2500/1086—Concentric shafts
-
- 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
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3024—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
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3026—Stroke
-
- 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
-
- 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
- F16D2500/5116—Manufacture, testing, calibrating, i.e. test or calibration of components during or soon after assembly, e.g. at the end of the production line
Definitions
- the invention relates to a method having the features according to the preamble of claim 1.
- the invention serves to determine the adaptive parameters of a hydrostatic clutch system at the belt end.
- Hydrostatic clutch systems are designed with a clutch actuator having a pressure sensor, this is shown for example in Figure 1, in DE 10 2010 047 800 A1 and DE 10 2010 047 801 A1.
- the clutch actuator is a so-called hydrostatic clutch actuator HCA (Hydrostatic Clutch Actuator).
- HCA Hydrostatic Clutch Actuator
- Under such a hydrostatic actuator is an actuator with a hydrostatic transmission path, for example, a pressure line with hydraulic fluid to understand. The pressure in the pressure line is detected by the pressure sensor.
- hydraulic fluid is moved in the transmission path or the pressure line, for example caused by a piston in a master cylinder, which moves a piston in a slave cylinder coupled by the hydraulic fluid. If the element is to hold its position, the hydraulic fluid in the transmission path rests so that there is a hydrostatic state of the hydraulic fluid that gives its name to this actuator.
- Touch point clutch position at which a given small moment (e.g.
- leaf spring force with the coupling open (snubb hole in the hydraulic section closed, however)
- position-pressure curve and path-pressure curve and the two terms position-force curve and path-force curve are used interchangeably in this document.
- path or position refer to the Aktorweg along which, the clutch moving part of the actuator - for example, a piston in the master cylinder - moves.
- German patent application DE 10 2011 081 195 does not describe the learning process for the above-mentioned adaptive parameters with sufficient accuracy.
- other adaptive parameters whose learning process is not described in the German patent application DE 10 2011 081 195.8. Al! E Coupling parameters must be determined during commissioning at the end of the belt (vehicle or test stand) or in the best possible service so that they can be stored in the EEprom memory for further use during driving.
- a method for adapting parameters of a clutch of a dual-clutch transmission system which is a hydrostatic
- Clutch actuator having a pressure sensor, provided in a motor vehicle. According to the invention, it is provided that the following steps are carried out:
- the parameter adaptation can also take place without a transmission test bench.
- the adaptation of the parameters during initial commissioning of the dual clutch transmission system and / or recommissioning of the dual clutch transmission system and / or commissioning of the vehicle and / or the decommissioning of the Vehicle is carried out in particular in the wake and / or while driving the vehicle, the parameters "base pressure hysteresis”, “pressure-pressure hysteresis”, “touch point”, “stiffness”, “form factors”, “leaf spring force preload” are.
- the clutch is retracted to a predetermined threshold value of the pressure and is then fully driven up again and / or that the clutch is driven up to a predetermined threshold value of the pressure and then completely closed again.
- a path-pressure characteristic curve of the clutch is determined from the detected pressure curve, and that from the determined path-pressure curve a Weg-Eingurkraft- characteristic of the clutch is determined and that in the Position range of the Weg- Eingurkraft characteristic in which the clutch is operated in the region of the clearance and still does not transmit torque, an approximation is performed with a straight line representing a Weg leaf spring force characteristic, wherein from the Weg leaf spring force characteristic of the parameter "Leaf spring force preload" as the function value of the straight line at a position where the clutch is completely open and no torque is transmitted and the piston in the slave cylinder has passed the sniffer opening in the direction of the clutch closing, so that no connection of the pressure medium to the expansion tank is detected.
- a path-pressure curve for closing the clutch and a path-pressure curve for opening the clutch at predetermined position support points where then path-pressure value pairs be present and that the parameter "basic pressure hysteresis" as an average of the differences of the path-pressure curve for closing and the path-pressure curve for opening at the position support points, which are in a position range in which the path Pressure curves have a gradient that is smaller than a predetermined minimum gradient threshold is determined.
- the parameter "pressure-pressure hysteresis" as differences of the value of the path-pressure curve for closing and the value of the path-pressure characteristic for the opening, with maximum actuator position in the direction of coupling Close, is determined.
- a clamping force characteristic of the clutch is determined by subtracting the determined path leaf spring force characteristic of the clutch from the determined path-Einschkraft- characteristic of the clutch.
- the parameter "touch point position" is determined by interpolation of the determined clamping force characteristic for a given contact point force, wherein upon specification of a Tast Vietnamesemoments a conversion into a corresponding force occurs.
- the clamping force characteristic of the coupling is displaced in the position direction such that the predetermined position on the position axis corresponding to the touch point corresponds to the determined parameter "touch point position" and at position reference points at which path-pressure value pairs in each case the quotient of two force values is determined, wherein in each case one force value is determined as interpolation of the determined clamping force characteristic and respectively the second force value as interpolation of the shifted clamping force characteristic and wherein the value of the quotient respectively a parameter of "preliminary form factors" is.
- the parameter "rigidity” is determined as the mean value from the determined parameters of the "preliminary form factors”. In a further preferred embodiment of the invention it is provided that the parameters "final shape factors” are determined from the parameters "preliminary shape factors” by subtracting the parameter "rigidity”.
- a scaling factor is additionally taken into account when determining the parameters.
- the relationship between the clamping force of the clutch and the torque which can be transmitted by the clutch is detected by means of a torque signal during commissioning or in the subsequent operation of the clutch.
- Figure 1 shows a schematic structure of a hydrostatic coupling system
- FIG. 3 Modeling: Travel-pressure characteristic with pressure hysteresis
- FIG. 4 Identification of the adaptive parameters of the pressure hysteresis
- FIG. 1 schematically shows the structure of a hydraulic coupling system 1 using the example of a hydraulic, hydrostatic clutch actuator (HCA), which is known from the prior art and shown schematically.
- HCA hydraulic, hydrostatic clutch actuator
- the hydraulic clutch system 1 comprises on the Encoder 15 a control unit 2, which drives an actuator 3. At a
- the volume of the cylinder 4 is changed, whereby a pressure P is built up in the cylinder 4, via a pressure medium 7 via a hydraulic line 9 to the slave side 16 of the hydraulic clutch system 1 is transmitted.
- the hydraulic line 9 is adapted with respect to its length and shape of the installation space situation of the vehicle.
- On the slave side 16 causes the pressure P of the pressure means 7 in a cylinder 4 'a path change, which is transmitted to a clutch 8 to actuate this.
- the pressure P in the cylinder 4 on the encoder side 15 of the hydraulic clutch system 1 can be determined by means of a first sensor 5.
- the first sensor 5 is preferably a pressure sensor.
- the path traveled by the actuator 3 along the Aktorweges is determined by means of a second sensor 6.
- hydrostatic coupling system can be determined by suitable methods. This will be explained below.
- a finite number (eg 20) of path-pressure value pairs 230, 240 stored.
- fixed path values or path differences can be specified for determination.
- the specification of fixed pressure values or pressure differences is conceivable.
- the path-pressure curves 210, 220 have large gradient changes, a combination of path and pressure specification or path difference and pressure difference specification is advantageous. For example, a new path-pressure value pair is saved if either the path has changed by 1 mm or the pressure has changed by 1 bar.
- the path-pressure characteristic curve 210, 220 is well represented by the finite number of value pairs 230, 240, as shown in FIG.
- the path-pressure curves 230, 240 are stored in separate data arrays.
- Basic force hysteresis Represents a parallel displacement of the displacement-force characteristic in the direction of force as a function of the actuator movement direction.
- Force-force hysteresis Additional displacement of the force-displacement curve in the direction of force as a function of the given force. This can be achieved at higher forces a larger hysteresis width.
- Step 1 Determination of the pressure hysteresis (see FIG. 4)
- the measured pressure hysteresis results from the difference between the path-pressure curves 230, 240 for closing and opening the clutch.
- the base pressure hysteresis 440, 420 can be determined by averaging.
- the pressure-pressure hysteresis 430 can be determined by linear approximation.
- the adaptive parameter of the pressure-pressure hysteresis 450 corresponds to the value at maximum actuator position ⁇ see FIG. 4).
- the current pressure hysteresis value results from the sum of basic pressure hysteresis 420 and current pressure-pressure hysteresis 430.
- the pressure-pressure hysteresis increases from zero at the touch point to the adaptive parameter of the pressure-pressure hysteresis at maximum actuator position, preferably linearly.
- Step 2 Determining the touch point
- the determination of the clamping force characteristic 530 is carried out according to the German patent application DE 10 2011 081 195 as follows.
- the path-pressure curve 210 in FIG. 2 shows a typical hysteresis, which is undesirable for the determination of the clamping force characteristic 530. Therefore, in a first step, the path-pressure curve 210 is approximated by a unique assignment, such as a mean-fit approximation so that a mean pressure curve is obtained.
- the mean pressure characteristic is converted by multiplication with the surface of the slave piston 19 of the clutch actuator into an engagement force FEngage 510 (FIG. 5) of the clutch.
- the result is a similar curve as the path-force characteristic curve, as shown by the path-pressure curve 210.
- the further procedure is analogous to the method with the path-pressure curve 210.
- the path-force characteristic curve is therefore approximated by a unique assignment, such as by the mean-fit approximation described above, so that a course analogous to Figure 5, namely, the engagement force FEngage 510 of the clutch as a function of the clutch position 550 results.
- a characteristic 510 of the engagement force FEngage of the clutch as a function of the clutch position 550 has resulted both with a pressure sensor and with a force sensor.
- the further procedure can be identical in both cases.
- the force sensor used may be integrated, for example, in the clutch actuator, or located between the clutch actuator and clutch, so in particular between clutch actuator and pressure plate of the clutch are, for example, as a separate component for detecting the transmitted from the actuator to the clutch force.
- the further procedure therefore consists in separating FEngage 510 into a leaf spring force FLeafSpring 520 and the clamping force FCIamp. 530. This process is illustrated with reference to FIG.
- the engagement force 510 has a very low gradient. This range can be approximated by a straight line 520 (leaf spring force FLeafSpring 520 in FIG. 5).
- the pitch and the value of the leaf spring force preload as the adaptive parameter Blattfederkraftvorlast the function value of the straight line 520 results in a position at which the clutch is fully open and the piston 19 in the slave cylinder 4, the sniffer opening 18 in the direction of clutch closing over. has drive, so there is no connection of the pressure medium 7 to the expansion tank 17.
- the clamping force curve 530 is obtained by subtracting the leaf spring force curve 520 from the engagement force curve 510. The result is illustrated by the clamping force characteristic (FCIamp curve) 530 in FIG.
- the touch point position is now obtained by interpolation of the clamping force characteristic 530 for a given contact point force. If, on the other hand, a touch point torque-for example 5 Nm-is specified, then this must first be converted into a touch-point force.
- Step 3 Determination of the preliminary form factors
- the nominal clamping force characteristic (standard clamping force characteristic curve for the respective coupling without adjustments) stored in the control unit is shifted in the position direction such that the touch point corresponds to the previously determined value.
- force values are subsequently determined by interpolation of the measured, above-determined clamping force characteristic curve 530. The quotients of these force values and the corresponding forces of the nominal clamping force characteristic give the provisional form factors.
- the stiffness is the ratio of the slopes of the measured clamping force characteristic and the nominal clamping force characteristic.
- Step 5 Determine the final form factors
- the final form factors are derived from the preliminary form factors by subtracting from them the previously calculated average. Due to the integer arithmetic a scaling factor is optionally considered.
- the method is not limited to being performed only at the end of the tape.
- a regular implementation would also be advantageous while driving, especially before driving (but reduces the availability) or immediately after the ride (in the wake).
- Basic pressure hysteresis + pressure-pressure hysteresis clutch closing Basic pressure hysteresis + pressure-pressure hysteresis: opening the clutch Pressure hysteresis measured
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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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014504156A JP6177229B2 (ja) | 2011-04-15 | 2012-03-28 | クラッチのパラメータの適応方法 |
CN201280018384.9A CN103477107B (zh) | 2011-04-15 | 2012-03-28 | 用于离合器参数适配的方法 |
DE112012001718.8T DE112012001718B4 (de) | 2011-04-15 | 2012-03-28 | Verfahren zur Adaption von Parametern einer Kupplung |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011017286 | 2011-04-15 | ||
DE102011017286.6 | 2011-04-15 | ||
DE102011081195 | 2011-08-18 | ||
DE102011081195.8 | 2011-08-18 | ||
DE102011088430.0 | 2011-12-13 | ||
DE102011088430 | 2011-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012139546A1 true WO2012139546A1 (de) | 2012-10-18 |
Family
ID=46025278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2012/000322 WO2012139546A1 (de) | 2011-04-15 | 2012-03-28 | Verfahren zur adaption von parametern einer kupplung |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6177229B2 (de) |
CN (1) | CN103477107B (de) |
DE (2) | DE102012204940A1 (de) |
WO (1) | WO2012139546A1 (de) |
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KR20170005412A (ko) * | 2014-05-09 | 2017-01-13 | 섀플러 테크놀로지스 아게 운트 코. 카게 | 히스테리시스를 고려하는 클러치 제어 |
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CN114151468A (zh) * | 2021-12-01 | 2022-03-08 | 中国第一汽车股份有限公司 | 离合器迟滞模型构建方法、控制方法、装置、设备、介质 |
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DE102017100927A1 (de) | 2017-01-18 | 2018-07-19 | Schaeffler Technologies AG & Co. KG | Verfahren zur Adaption eines Tastpunktes einer Reibkupplung |
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Also Published As
Publication number | Publication date |
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CN103477107A (zh) | 2013-12-25 |
JP6177229B2 (ja) | 2017-08-09 |
JP2014514514A (ja) | 2014-06-19 |
CN103477107B (zh) | 2016-10-05 |
DE102012204940A1 (de) | 2012-10-18 |
DE112012001718A5 (de) | 2014-01-16 |
DE112012001718B4 (de) | 2021-11-04 |
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