WO2014206407A2 - Verfahren zur betätigung eines planetengetriebes - Google Patents
Verfahren zur betätigung eines planetengetriebes Download PDFInfo
- Publication number
- WO2014206407A2 WO2014206407A2 PCT/DE2014/200255 DE2014200255W WO2014206407A2 WO 2014206407 A2 WO2014206407 A2 WO 2014206407A2 DE 2014200255 W DE2014200255 W DE 2014200255W WO 2014206407 A2 WO2014206407 A2 WO 2014206407A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reference position
- brake
- distance
- actuator
- actuating
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
- F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
-
- 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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
- F16H63/3043—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force comprising friction clutches or brakes
-
- 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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H2061/2823—Controlling actuator force way characteristic, i.e. controlling force or movement depending on the actuator position, e.g. for adapting force to synchronisation and engagement of gear clutch
Definitions
- the invention relates to a method for actuating a planetary gear with a connected to a first shaft sun gear, a ring gear and a meshing between sun and ring gear planet rotatably receiving, connected to a second shaft planet carrier, an electrically operated actuator with an axially displaceable actuator, which by Displacement along a distance actuated a brake between a ring gear and a fixed component, wherein the distance is detected by a relative path changes detecting displacement sensor by a control unit and the brake of the actuating element along the distance between an open position with freely rotating ring gear and a closed position with the Fixed component braked ring gear is shifted, and a computing device for assigning a detected relative path position to an absolute reference position of the route.
- Planetary gear with a sun gear, planets, a rotatably receiving this planetary carrier and a ring gear in a simple manner form a planetary gear between two waves.
- a planetary gear can be formed switchable, for example, if sun gear and planet carrier are each associated with a shaft and the ring gear rotates freely or is braked fixed to the housing. In this way, two switchable translations between the waves.
- such a shiftable planetary gear is arranged, for example, in a hybrid drive train between a crankshaft of an internal combustion engine and a pulley plane, in which the ring gear is automatically actuated by means of an electric actuator, for example, an electric machine as a starter of the internal combustion engine, to operate from this driven generator and as a drive for ancillaries with a stationary internal combustion engine with different ratios to the crankshaft.
- an electric actuator for example, an electric machine as a starter of the internal combustion engine
- the path of an actuating element of the actuator for actuating the brake is determined by means of a relative distance sections detecting displacement sensor, such as an incremental encoder.
- An absolute position can not be easily measured. Since the absolute position is changed, for example, in the case of a parked actuator can, without this can be determined via the incremental encoder, the determination of an absolute path position is not sufficient only by the incremental encoder. In addition, a reference position must be reliably determined.
- the path coordinate system determined by the relative path signals of the incremental encoder is subsequently shifted so that the reference position coincides with a predetermined absolute position and thus eliminates possible errors, for example a loss of increments or an erroneous recognition of increments and after each correct determination of the reference position, the relative path signals absolute position positions can be assigned.
- the relative path signals absolute position positions can be assigned. For this purpose, for example from DE 10 2012 220 712 A1 a method for controlling a planetary gear with a referencing of the planetary gear switching actuator known.
- the object of the invention is the advantageous development of a method for actuating a planetary gear, in particular for referencing a controlled by relative displacement signals actuator.
- the proposed method is provided for actuating a planetary gear with a sun gear connected to a first shaft, a ring gear and a meshing between sun and ring gear planet rotatably receiving, connected to a second shaft planet carrier.
- an actuator operated electrically, for example by means of an electric motor, displaces an axially displaceable, preferably self-locking, actuating element, so that a set path position can be maintained without energizing the electric drive.
- the actuating element may, for example, be a spindle nut displacing axially on a spindle driven by an electric motor.
- the actuator actuated by the displacement thereof by means of the actuator along a path between a ring gear and a fixed component arranged brake, wherein the distance by means of a relative path changes detected displacement sensor, such as an incremental encoder, which in the e-lektrischen drive in the form of an electric motor in an advantageous manner can be integrated in these and at the same time can serve its electronic commutation, is determined by a control unit and the brake of the actuating element along the distance between an opening position is shifted with freely rotating ring gear and a closed position with braked against the fixed component ring gear.
- detected displacement sensor such as an incremental encoder
- the detected, relative path signals are assigned in a for example in the control unit integrated computing device during referencing an absolute reference position of the route, for example, by a behavior of an electrical operating variable, such as the operating current, an operating voltage, load development and / or the like examined for changes and is recognized in a corresponding change of this reference position, for example, if the actuator at the reference position by running on an obstacle requires more electrical energy and thus requires more power, a supply voltage breaks.
- the behavior of the relative displacement signals can be evaluated even with constant operation of the actuator and a reaching of the energy storage can be detected if no change in the relative displacement signals occurs more.
- the actuator is shifted with the brake open against a hard stop e- energy store with rising against the hard stop characteristic curve with a smaller force than a spring force of the energy storage and the reference position is set upon reaching the energy storage.
- the entire available distance for actuating the brake with a load characteristic curve extending over it is formed by a hard stop with small actuation paths when the brake is open, the "lower” stop, which is preceded by the prestressed axially effective energy store and the so-called “upper”"Stop limited, in which the brake is closed maximum. Due to wear of the brake pads of the brake, the distance can extend.
- a wear compensating device is automatically provided for this purpose which automates the occurring wear.
- the load characteristic namely an area in the closing direction of the brake, compared to a base load occurring in a central region of the travel path after overcoming the tactile position at which the brake begins to transmit moment and an area lying opposite this with decreasing distance with steeply rising load when touching the biased energy storage to overcome its biasing force, overcome this biasing force, the load continues to increase with further decreasing distance, until the "bottom" stop is reached, at which the load on the hard stop rises steeply and against the actuator are not displaced should.
- the actuating element when an approach of the reference position, the actuating element with a smaller force, for example by regulation to a correspondingly low voltage, as the biasing force against the energy storage displaced, so that the actuator comes to this stop and due to substantially constant displacement signals of the relative displacement sensor and / or, for example, increasing operating current, the reference position is detected on the energy storage.
- a plausibility of the determined reference position is preferably made after determining the reference position.
- the reference position can be plausibilinstrument by the actuator is speed controlled against the energy storage is actuated and based on the behavior of an electrical load variable, a correlation with the characteristic of the energy storage is evaluated. Due to the preferably rising linearly against the hard stop characteristic of the energy storage can be detected due to an evaluation of an example decreasing operating voltage or increasing operating current, extended pulse widths of a pulse width controlled electric motor, reaching a maximum path difference of the characteristic of the energy storage and / or the like that the Actuating element is compressed under compression of the energy store in the opening direction of the brake, that is against the "lower" stop .
- a secured position can be determined on the basis of an evaluation of a constant over a distance electrical load size, for example, operating current or voltage of the actuator.
- a secured position can be detected if a distance covered is greater than a distance of the energy store, which is not loaded by the actuating element and is completely loaded.
- a secured position can be detected if a running time of the actuating element is greater than a transit time for the complete compression of the energy store.
- the existing coordinate system is changed to the current mapped coordinate position system, so that an updated path exists, based on the unique positions are predictably adjustable.
- the actuating element is displaced in preparation for the next closing operation of the brake to a designated at a predetermined distance to the reference position zero point. From this zero point, a definite load characteristic field of the braking torque to be transmitted via the brake can be calculated in advance while the probing position is still plausible.
- the touch point is located at a predetermined distance to the zero point.
- the torque characteristic curve between the touch position and the maximum transferable braking torque can be stored in the control unit path-dependent, temperature-dependent, operating time-dependent and / or dependent on further operating parameters and be adapted continuously. A change in the touch position can be adapted in the same way continuously.
- a displacement of the actuating element during a determination of the reference position in the direction of the closed position of the brake can be made voltage-limited, wherein a voltage limit is set such that a transmission of a predetermined braking torque of the brake excluded becomes.
- a displacement of the actuating element during a determination of the reference position in the direction of the closed position of the brake can take place exclusively if an operation of the planetary gear-dependent setting of a closed position of the brake is indifferent. This means that an eventual closing of the brake for the operation of the planetary gear is harmless and uncritical.
- the actuated by the process planetary gear can be provided with a between the two waves, for example, between sun gear and shaft effectively arranged freewheel.
- the reference position can be determined during a switching over of the freewheel between a blocking function and a rollover function.
- the actuated by the proposed method devices such as planetary gear with or without freewheel, hybrid powertrains according to the features of DE 10 201 1 087 697 A1 and DE 10 2012 220 712 A1 and the like in conjunction and in the scope of for the Implementation of the method necessary device features of the invention are included.
- FIG. 1 shows a load curve 1 of the actuating force F via the actuating travel s of an actuating element for actuating a brake of the ring gear of a planetary gear against a fixed component.
- Tastposition T p at the beginning of torque transfer of the brake in the fully opened brake, a biased between the hard stop A- ⁇ and the zero position P 0 energy storage, such as a preloaded spring with increasing in the direction of the stop A- ⁇ characteristic curve 2 with the force difference AF P attached, which leads to the force jump 3 in the load curve 1 with subsequent linearly increasing force difference AF R.
- the reference position P r is thus in this actuator, the position at which the preloaded spring is touched and this leads to the force jump 3 in the load curve 1.
- the reference position P r is approached with a defined voltage of greater distances in the opening direction of the brake, which is not sufficient to shift the actuator into the energy storage and thus to compress this.
- the thus determined stop is then recognized and adopted as the reference position P r .
- This reference position P r is then plausibilized.
- the actuating element of the planetary gear actuator is further speed-controlled with a force limitation in the direction of the "lower" mechanical stop A.
- the distance difference As f between the determined reference position P r and the maximum plausibility position Ppmax in the region of the "lower" stop A-. ⁇ is used to check the plausibility of the reference P r evaluated. If the load behavior of the actuator correlates with the characteristic curve 2 of the energy store, the reference position P r is regarded as being successfully plausibility-checked.
- Reference position no fixed mechanical stop, such. B. is the lever actuator, but is formed by a preloaded spring.
- the approach of this spring may thus be carried out only in a manner that ensures that only the intended for referencing position is approached and not undesirable the spring is further pressed by the start and thus a too low reference position is determined.
- a misalignment of the reference position P r may occur when the actuator is in an unintentional manner in the path distance difference As f and thus beyond the reference position P r . If a new determination of the reference position P r is to be carried out in this case, then the actual position within the path distance difference As f would be determined as the new reference position P r , since the referencing takes place as shown with a voltage which is not sufficiently high to shift the actuator within the curve 2 in the direction of the stop A- ⁇ .
- the actuator is moved to an end position outside the path difference As f
- a plausibility of the reference position P r is considered successful, that is, for example, as a Wegumblendifferenz As f between the reference position P r and the maximum plausibility position P pma x as expected, then the operation selement shifted after the successful plausibility position-controlled to the zero position P 0 .
- the actuating element is displaced in the closing direction of the brake until a position difference greater than a predetermined threshold is detected or a maximum time for such a displacement, this action is achieved, wherein the threshold is, for example, greater than the path distance difference As f .
- the closing of the brake in this case is voltage-controlled with a voltage which allows the displacement of the actuating element from the path difference As f , however, is less than a threshold for actuation of the brake beyond a predetermined braking torque. Furthermore, it can be limited to states of the planetary gear, in which a closing of the brake is harmless or uncritical, for example, when both shafts, such as a crankshaft and a generator shaft of a hybrid powertrain of the planetary gear stand still.
- the closing of the brake in the event of a failed plausibility check can alternatively take place up to a predetermined, smaller threshold beyond the determined reference position P r .
- a faulty, too low reference position which is within the path distance difference As f
- by closing in response to the reference position P r although not guaranteed that the actuator is completely displaced out of the Wegumblendifferenz As f out.
- a higher reference position would be determined, so that the actuator is successively moved out of the path difference As f by successive referencing until a referencing with a starting point outside the path distance As f can again be successfully plausibilized.
- a referencing is only successful if first a movement of the actuating process is detected before the referencing process. If the actuator is, for example, directly in front of the force jump 3 or within the path difference As f , no displacement of the actuating element is detected, so that at this point of the process the referencing process can already be stopped without plausibility. Subsequent to such a failed referencing process, the actuator is displaced by a small distance, for example a few increments in the closing direction of the brake and eventually initiated by repeating the process finally a referencing with standing before the force jump 3 actuator. As a result, the processing operations of referencing and plausibility must be performed only once.
- the position of the force characteristic curve 4 is dependent on the wear of the brake linings of the brake so that they can shift along the path difference As f to the dashed lines shown characteristic curve 4 'Here, a wear compensating device may be provided, which again reduces the Wegumblendifferenz As f before reaching the force curve 4' Accordingly, the maximum Wegumblendifferenz As of the actuating element for actuating the brake starting from the zero position P 0, the actuating element can thereby be safely displaced within the path distance difference As s without actuating the brake while the brake is being actuated within the path distance difference As k nd a referencing and plausibility check with rotating waves so can not be approached safely.
- the planetary gearbox has a freewheel that is effectively arranged between the two, it can be provided that the freewheeling system switches over within the path length difference As f .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transmission Devices (AREA)
- Retarders (AREA)
- Braking Systems And Boosters (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014002988.2T DE112014002988B4 (de) | 2013-06-28 | 2014-06-11 | Verfahren zur Betätigung eines Planetengetriebes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013212663.8 | 2013-06-28 | ||
DE102013212663 | 2013-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014206407A2 true WO2014206407A2 (de) | 2014-12-31 |
WO2014206407A3 WO2014206407A3 (de) | 2015-04-16 |
Family
ID=51136278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2014/200255 WO2014206407A2 (de) | 2013-06-28 | 2014-06-11 | Verfahren zur betätigung eines planetengetriebes |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102014211152A1 (de) |
WO (1) | WO2014206407A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014212163A1 (de) | 2013-07-19 | 2015-01-22 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Betätigung eines Planetengetriebes |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011087697A1 (de) | 2010-12-24 | 2012-06-28 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Steuerung eines schaltbaren Planetengetriebes in einer Riemenscheibenebene eines Antriebsstrangs |
DE102012220712A1 (de) | 2011-12-08 | 2013-06-13 | Schaeffler Technologies AG & Co. KG | Verfahren zur Steuerung eines Aktors zur Betätigung einer Bremse eines Startergetriebes zum Starten eines Kraftfahrzeugmotors sowie Startergetriebeanordnung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2369869B (en) * | 1997-05-30 | 2002-07-24 | Luk Getriebe Systeme Gmbh | Method and device for controlling a clutch |
BR0015355A (pt) * | 1999-11-04 | 2002-07-16 | Luk Lamellen & Kupplungsbau | Dispositivo de ativação para um equipamento de embreagem |
DE102005027602A1 (de) * | 2004-06-30 | 2006-02-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Verfahren zum Abgleichen einer Inkrementalwegmesseinrichtung in einer Betätigungsvorrichtung einer zugedrückten Kupplung sowie Betätigungsvorrichtung |
EP1614922A3 (de) * | 2004-07-06 | 2009-12-23 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Verfahren und Vorrichtung zum Referenzieren eines Inkrementalwegsensors in einer elektronisch gesteuerten Betätigungsvorrichtung einer Kupplung |
WO2007093144A1 (de) * | 2006-02-16 | 2007-08-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Verfahren und vorrichtung zum referenzieren der stellung eines betätigungsgliedes |
DE102010009735A1 (de) * | 2009-03-12 | 2010-09-16 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Erfassung der Aktorposition |
WO2012097774A2 (de) * | 2011-01-20 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Verfahren zur steuerung eines planetengetriebes in einem riementrieb und riementrieb |
-
2014
- 2014-06-11 DE DE201410211152 patent/DE102014211152A1/de not_active Withdrawn
- 2014-06-11 WO PCT/DE2014/200255 patent/WO2014206407A2/de active Application Filing
- 2014-06-11 DE DE112014002988.2T patent/DE112014002988B4/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011087697A1 (de) | 2010-12-24 | 2012-06-28 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Steuerung eines schaltbaren Planetengetriebes in einer Riemenscheibenebene eines Antriebsstrangs |
DE102012220712A1 (de) | 2011-12-08 | 2013-06-13 | Schaeffler Technologies AG & Co. KG | Verfahren zur Steuerung eines Aktors zur Betätigung einer Bremse eines Startergetriebes zum Starten eines Kraftfahrzeugmotors sowie Startergetriebeanordnung |
Also Published As
Publication number | Publication date |
---|---|
WO2014206407A3 (de) | 2015-04-16 |
DE112014002988B4 (de) | 2020-06-18 |
DE112014002988A5 (de) | 2016-04-07 |
DE102014211152A1 (de) | 2014-12-31 |
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