WO2018082949A1 - Dispositif pour faire fonctionner un actionneur électromagnétique et en déterminer l'état de fonctionnement, ainsi que dispositif d'embrayage et chaîne cinématique de véhicule automobile - Google Patents

Dispositif pour faire fonctionner un actionneur électromagnétique et en déterminer l'état de fonctionnement, ainsi que dispositif d'embrayage et chaîne cinématique de véhicule automobile Download PDF

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Publication number
WO2018082949A1
WO2018082949A1 PCT/EP2017/076942 EP2017076942W WO2018082949A1 WO 2018082949 A1 WO2018082949 A1 WO 2018082949A1 EP 2017076942 W EP2017076942 W EP 2017076942W WO 2018082949 A1 WO2018082949 A1 WO 2018082949A1
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WO
WIPO (PCT)
Prior art keywords
actuator
current
operating state
operating
determining
Prior art date
Application number
PCT/EP2017/076942
Other languages
German (de)
English (en)
Inventor
Florian WEINL
Martin Ruider
Michael Pantke
Thomas Speh
Thomas Schwegler
Lothar Kiltz
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2018082949A1 publication Critical patent/WO2018082949A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
    • 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
    • F16D48/064—Control of electrically or electromagnetically actuated 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1021—Electrical type
    • F16D2500/1022—Electromagnet
    • 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
    • F16D2500/3022—Current
    • 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
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3028—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/316—Other signal inputs not covered by the groups above
    • F16D2500/3166—Detection of an elapsed period of time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/316—Other signal inputs not covered by the groups above
    • F16D2500/3168—Temperature detection of any component of the control system
    • 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
    • F16D2500/501—Relating the actuator
    • F16D2500/5012—Accurate determination of the clutch positions, e.g. treating the signal from the position sensor, or by using two position sensors for determination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/702—Look-up tables
    • F16D2500/70205—Clutch actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/702—Look-up tables
    • F16D2500/70205—Clutch actuator
    • F16D2500/70223—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/702—Look-up tables
    • F16D2500/70205—Clutch actuator
    • F16D2500/70235—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
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/708—Mathematical model
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/1855—Monitoring or fail-safe circuits using a stored table to deduce one variable from another

Definitions

  • the invention relates to a device for operating and for determining an operating state of an electromagnetic actuator.
  • the invention also relates to a coupling device with a coupling means for selectively mechanically connecting and disconnecting two components and an electromagnetic actuator for actuating the coupling.
  • the invention also relates to a motor vehicle drive train with such a coupling device.
  • the object of the present invention is to improve the state of the art.
  • a device for operating an electromagnetic actuator and for determining an operating state of the actuator has a two-position controller for operating the actuator and a determination means.
  • the determining means is designed to determine a time profile of a control signal output by the two-point controller and to determine therefrom the operating state. In particular, a dynamic of the drive signal is determined.
  • the device On the basis of the activation signal, the device is designed to supply the actuator with an electric current, also referred to below as "actuator current."
  • a characteristic time profile of the actuator current is formed in accordance with the time profile of the activation signal, in which the operating state of the actuator is inherently contained because it essentially determines the speed with which the actuator current builds up and degrades again, as well as the maximum and average height of the actuator current.
  • the electromagnetic actuator is in particular an electromagnetic linear actuator.
  • the electromagnetic actuator can in particular via have at least or exactly one coil. Through this coil (s), an armature of the actuator is magnetically movable. This movement can be tapped on the actuator and used mechanically as an actuating movement of the actuator.
  • the actuator position corresponds to a position of the armature within the actuator or a positioning position which the actuator occupies externally.
  • an actuator temperature and / or an actuator position of the actuator can be determined. These form accordingly the sought operating state of the actuator.
  • the proposed concept offers the advantage that only a few means need be used to obtain information about the current operating state of the actuator. This information can be processed immediately, for example, to control or regulate the actuator. By using the integrated sensor effects of the actuator, the tolerance chain can be shortened compared to normally used external sensors.
  • the two-position controller is preferably an analog two-position controller.
  • this may be a discrete, ie hardware, two-position controller.
  • the analog two-point controller can also be designed as a software module, for example a control device or another microcontroller.
  • the two-position controller an upper current limit and a lower
  • the current limits can be predetermined for example by a microcontroller the two-step controller.
  • the output from the RS flip-flop signal for the start and the end of the energization of the actuator is preferably used as the drive signal for a bridge driver of a bridge circuit, in particular a so-called H-bridge circuit.
  • This bridge circuit serves to provide the actuator current.
  • the outputs of the bridge circuit are thus accordingly electrically connected to the inputs of the actuator, in particular the coil of the actuator.
  • the bridge driver controls the bridge circuit according to the drive signal. This in turn causes a corresponding electrical energization of the actuator with the actuator current. This results in the time course of the actuator current.
  • the specification of the upper and lower current limit results in a current band in which the actuator is operated.
  • the current band results in a characteristic dynamics of the current and current breakdown, in which the information about the operating state of the actuator, in particular its position and temperature, is included.
  • This dynamics over the frequency or the period and the duty cycle or the duty cycle (also called duty-cycle or DC), ie the ratio of the duty cycle to the switching period, the output from the two-level control signal can be extracted.
  • the determining means can thus close the operating state of the actuator from the frequency or period and the duty cycle or the duty cycle of the drive signal.
  • the determination means has, for example, a so-called capture input with which it picks up the drive signal from the two-position controller.
  • a capture input is an input, for example in a microprocessor, with which the switching times of binary signals can be determined with high accuracy.
  • the determining means may be designed to determine a duty cycle of the drive signal and to determine the temperature of the actuator from the duty cycle. An extra temperature sensor is therefore not required.
  • the thus determined actuator temperature reflects a temperature of the coil of the actuator again. This changes namely their temperature and material dependent their electrical resistance. With the conductor materials commonly used in coils, such as copper, the electrical resistance increases with increasing temperature. To be able to provide a specific, required actuator current under a constant supply voltage, the duty cycle must therefore be adapted to the actuator temperature. Thus, a high actuator temperature requires a comparatively long duty cycle, while a low actuator temperature requires a comparatively short duty cycle in order to provide the same actuator current. So there is a clear relationship between the duty cycle and the actuator temperature. Thus, the actuator temperature can be determined based on the duty cycle or, equivalently, the duty cycle.
  • the actuator temperature determined by the determining means (11 C) can be used to change the electric power supplied to the actuator.
  • the electric power supplied to the actuator can be selectively reduced.
  • the determining means can also be designed to determine a frequency of the drive signal and the actuator current, as well as to determine a position of the actuator from the frequency and the actuator current. Thus, the actuator position can be determined easily.
  • the determining means is also designed to include a current supply voltage of the actuator in the determination of the operating state.
  • the supply voltage is essentially constant. Then changes in the supply voltage need not be taken into account when determining the operating state. In some cases, however, the supply voltage may fluctuate. Then it is advantageous to consider these in the determination of the operating state.
  • the determination means preferably has at least one look-up table, a map or another function and is accordingly designed to determine drive state from the drive signal.
  • the relation between the switch-on duration and the actuator temperature as well as the relation between actuator position, actuator current and frequency can each be stored in a look-up table or a characteristic field or another function.
  • the dependence on the supply voltage can then be stored in the look-up table or the characteristic field or the other function.
  • the look-up table or the characteristic field or the other function may in particular have been determined empirically beforehand or have been determined in advance on the basis of model calculations.
  • the dependence of the current build-up dynamics of the actuator on the operating condition can be optimized with respect to the operating state monitoring.
  • a good electrically conductive material such as aluminum or copper
  • the proposed procedure / device basically evaluates position-dependent eddy current effects within the actuator.
  • the coupling device has the proposed device for operating and for determining the operating state of the actuator. Thus, no extra sensors are needed to determine the operating state of the actuator.
  • the two components may be, for example, waves.
  • One of the components may be fixed and the other be movable relative thereto, for example rotatable or displaceable.
  • both components in the non-coupled state relative to each other can be rotatable or displaceable.
  • the coupling means movable by the actuator may be, for example, a coupling sleeve or a clutch disc or a clutch pressure plate.
  • the coupling device may in particular be a coupling device of a motor vehicle drive train, for example for a passenger or truck.
  • the coupling device can be realized for example in or for a motor vehicle transmission. Such a motor vehicle drive train with such a coupling device is therefore also proposed.
  • the hardware logic can be implemented in software with fast sampling rate (FPGA, DSP, fast ⁇ ).
  • the specification of the upper and lower current limit can be varied, for example to bring the working frequency in targeted, advantageous areas and / or to keep constant there.
  • the actuator can be optimized with regard to its sensitivity in order to be able to determine the operating status more precisely. For example, a targeted model-based development of the actuator via FEM simulation is possible.
  • the determined operating states of the actuator can be compared with expected operating states or intervals of tolerable operating states. In this way, it is possible, for example, to monitor the actuator for malfunctions or wear (diagnosis or condition monitoring).
  • the determined actuator temperature can be used to switch off the actuator before overheating occurs.
  • Fig. 4 shows another map.
  • the actuator 1 serves to move a coupling means 7 in a coupling device 2.
  • the actuator 1 has, for example, a single magnetic coil 3 and a linearly movable armature 4.
  • the actuator 1 is thus a linear actuator.
  • the mobility of the armature 4 is illustrated by the double arrow.
  • a magnetic force acting against the magnetic force can be applied, for example, by a spring means.
  • the position of the armature 4 in the actuator 1 then results.
  • a vortex flow ring 5 This consists of an electrically conductive material, for example of a copper or aluminum material.
  • the coil 3 is arranged stationarily in a housing 6.
  • the armature 4 is guided in the housing 6 at least linearly movable.
  • the armature 4 acts on the coupling means 7, which is exemplified here as a coupling sleeve. At least the linear movement of the armature 4 is thus transmitted to the coupling means 7.
  • the coupling means 7 is thus moved linearly with the armature 4.
  • the coupling means 7 is designed to connect two components 8, 9 optional mechanical and separate.
  • the components 8, 9 are exemplary here waves, which are rotatable relative to each other in the separated state and are rotatable only in the coupled state together. For this purpose, they are rotatably mounted in the housing 6 by corresponding bearing means 10, for example rolling bearings.
  • An axis of rotation of the components 8, 9 is marked with the reference symbol L.
  • the coupling device 2 shown in Fig. 1 is preferably used in a motor vehicle drive train, such as a motor vehicle transmission, for the optional mechanical connection and separation of two waves.
  • the housing 6 may then be, for example, a transmission housing.
  • extra sensors can be used.
  • external sensors can be used to determine the actuator temperature.
  • FIG. 2 shows a system for operating an electromagnetic actuator 1, in particular that of FIG. 1.
  • the system has a microcontroller 1 1.
  • an analog two-point controller 12 is provided, as well as a bridge driver 13.
  • a bridge circuit 14 is provided. This serves for electrical energization of the actuator.
  • the actuator 1 is shown in Fig. 2 as electrical equivalent circuit diagram, consisting of a network of resistors and inductances, shown.
  • the elements 1 1, 12, 13, 14 of the system have corresponding inputs and outputs, which are each shown in FIG. 2 and designated.
  • the microcontroller 1 1 has two modules 1 1 A, 1 1 B, for example. These can be designed, for example, as software modules or hardware modules. Module 1 1 A contains in this case a superimposed control logic.
  • Module 1 1 A thus contains, for example, control functions, such as, in particular, a functional software.
  • Module 1 1 B contains a desired current determination, which has a current regulator, an actual current processing and a determination means 1 1 C for determining the operating state of the actuator.
  • module 1 1 B contains, for example, basic functions, such as in particular a basic software.
  • the electrical current underlying the desired current determination, the current controller and the actual current conditioning forms the actuator current, that is, the electric current supplied to the actuator 1 by the bridge circuit 14.
  • the setpoint current determination with current controller a required electric current for the actuator 1 (setpoint current, setpoint actuator current) is determined.
  • a current to the actuator 1 supplied electric current is processed for processing in the microcontroller 1 1 and the target current determination with current controller and the determining means 1 1 C provided.
  • the setpoint current determination with current controller transmits corresponding control signals, referred to in FIG. 2 as "PWM Out 1", "PWM Out 2", to the analog two-position controller 12.
  • the two-position controller consists of a comparator circuit 12A and an RS flip-flop 12B.
  • the two-position controller 12 is constructed here as a discrete hardware circuit. Alternatively, assuming a sufficiently fast sampling rate, it can also be designed as a software module, in particular of the microcontroller 1 1.
  • the two-step controller 12 allows the actuator current with the help of the comparator 12A and the RS flip-flop 12B between defined current limits toggle, so fluctuate. These current limits, in detail a lower and an upper current limit, are specified by the microcontroller 11.
  • the signal for the supply and Entstromung of the actuator is output as control signals H1, H2 from the two-point controller 12 to the bridge driver 13.
  • the bridge driver 13 operates the bridge circuit 14.
  • the actuator 1 is electrically energized in accordance with the drive signals H1, H2.
  • the bridge circuit is formed by way of example as an H-bridge circuit. Accordingly, the bridge driver 13 has a driver per bridge branch. These drivers are designated as "H1 drivers” and “H2 drivers” in FIG.
  • the current actuator current is supplied to the two-position controller 12, in detail to the comparator circuit 12A, so that the actuator current, as described above, is kept between the predetermined current limits.
  • the specification of the upper and lower current limit results in a predetermined current band, in which the actuator current resides, in which he actuator is thus operated.
  • a predetermined current band results in a characteristic dynamics of current and current reduction.
  • Fig. 2 such current and current degeneration is exemplified within the block of the comparator circuit 12A.
  • the information about the operating state of the actuator 1, in particular the actuator position and the actuator temperature, is implicitly contained in this dynamic.
  • This dynamic is also due to the special control characteristic of the two-level controller 12 in its drive signals H1, H2 again. So you can choose from the frequency and Duty cycle of the drive signals H1, H2 are extracted.
  • the microcontroller 1 1 is therefore supplied with at least one of the drive signals H1, H2 via a capture input. In Fig. 2, this is the drive signal H1.
  • the capture input is designated as "PWM-In 1" in FIG. 2.
  • the tap for the drive signal H1 is located, for example, at the respective output of the RS flip-flop 12B or the two-point controller 12 (in FIG upper output).
  • the drive signal H1 is fed to the detection means 1 1 C via the capture input of the microcontroller 1 1.
  • the currently applied supply voltage is supplied to the determination means 1 1 C via a further input of the microcontroller 1 1 (referred to as "ADC-In 2" in FIG. 2)
  • the determination means 1 1 C also receives from the actual current conditioning of the Module 1 1 B is the current supplied to the actuator (actual actuator current).
  • the determining means 1 1 C one or more maps on. It is designed to determine the operating state of the actuator so.
  • FIG. 3 and FIG. 4 Examples of such maps are shown in FIG. 3 and FIG. 4 as an example. These may have been determined empirically in advance, for example.
  • the determination means 1 1 C can determine the actuator position ("position, mm") on the basis of the actuator current ("current, A”) and the frequency of the drive signal H 1 ("frequency, Hz") Each value pair of current and frequency can be assigned exactly one actuator position.
  • Corresponding maps may alternatively or additionally be provided for the actuator temperature, which results in particular from the duty cycle and the supply voltage. Such a map represents the clear relationship between the actuator temperature and the duty cycle.
  • optional filters 15 may be provided in addition to the explicitly described or named components.
  • the elements 16 each represent an optional signal conditioning for the two-position controller 12.
  • Coupling device coupling sleeve component, shaft

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

L'invention concerne un dispositif pour faire fonctionner un actionneur électromagnétique (1) et en déterminer l'état de fonctionnement. Ce dispositif comprend un régulateur à deux positions (12) pour faire fonctionner l'actionneur (1) et un moyen de détermination (11C). Le moyen de détermination (11C) est conçu pour déterminer une variation, dans le temps, du signal de commande (H1) généré par le régulateur à deux positions (12) et à déterminer l'état de fonctionnement à partir de cette variation. La présente invention concerne en outre un dispositif d'embrayage (2) comprenant un tel dispositif et une chaîne cinématique de véhicule automobile comportant un tel dispositif d'embrayage (2).
PCT/EP2017/076942 2016-11-02 2017-10-23 Dispositif pour faire fonctionner un actionneur électromagnétique et en déterminer l'état de fonctionnement, ainsi que dispositif d'embrayage et chaîne cinématique de véhicule automobile WO2018082949A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016221477.2 2016-11-02
DE102016221477.2A DE102016221477A1 (de) 2016-11-02 2016-11-02 Vorrichtung zum Betreiben und zur Ermittlung eines Betriebszustands eines elektromagnetischen Aktors sowie Kupplungsvorrichtung und Kraftfahrzeugantriebsstrang

Publications (1)

Publication Number Publication Date
WO2018082949A1 true WO2018082949A1 (fr) 2018-05-11

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US11022218B2 (en) 2018-03-02 2021-06-01 Zf Friedrichshafen Ag Parking interlock in a vehicular transmission
US11261967B2 (en) 2019-12-05 2022-03-01 Zf Friedrichshafen Ag Device for locking a piston rod of a piston of an actuator which is pressurizable in order to disengage a parking lock and is spring-loaded in order to engage the parking lock
US11746902B2 (en) 2019-04-17 2023-09-05 Zf Friedrichshafen Ag Device for actuating a parking lock means of an automatic transmission and method for operating such a device
US11767914B2 (en) 2019-12-05 2023-09-26 Zf Friedrichshafen Ag Device for locking a piston rod of a piston of an actuator which is pressurizable in order to disengage a parking lock and is spring-loaded in order to engage the parking lock

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DE102019217495A1 (de) * 2019-11-13 2021-05-20 Zf Friedrichshafen Ag Parksperrensystem, Fahrzeug mit einem Parksperrensystem, sowie Verfahren zum Betreiben eines Parksperrensystems
DE102019218966A1 (de) * 2019-12-05 2021-06-10 Zf Friedrichshafen Ag Vorrichtung mit einem Aktor
DE102019135209A1 (de) * 2019-12-19 2021-06-24 Fte Automotive Gmbh Verfahren zur Ermittlung einer Position eines Ankers innerhalb einer Magnetspule sowie Hubmagnetaktor
DE102020216233A1 (de) 2020-12-18 2022-06-23 Zf Friedrichshafen Ag Analoge Komparator-Schaltung für Kommunikationsschnittstellen innerhalb eines Fahrzeugs

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11022218B2 (en) 2018-03-02 2021-06-01 Zf Friedrichshafen Ag Parking interlock in a vehicular transmission
US11746902B2 (en) 2019-04-17 2023-09-05 Zf Friedrichshafen Ag Device for actuating a parking lock means of an automatic transmission and method for operating such a device
US11261967B2 (en) 2019-12-05 2022-03-01 Zf Friedrichshafen Ag Device for locking a piston rod of a piston of an actuator which is pressurizable in order to disengage a parking lock and is spring-loaded in order to engage the parking lock
US11767914B2 (en) 2019-12-05 2023-09-26 Zf Friedrichshafen Ag Device for locking a piston rod of a piston of an actuator which is pressurizable in order to disengage a parking lock and is spring-loaded in order to engage the parking lock

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