EP3224465B1 - Procédé pour déterminer le trajet d'armature d'un actionneur magnétique - Google Patents

Procédé pour déterminer le trajet d'armature d'un actionneur magnétique Download PDF

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Publication number
EP3224465B1
EP3224465B1 EP15787557.6A EP15787557A EP3224465B1 EP 3224465 B1 EP3224465 B1 EP 3224465B1 EP 15787557 A EP15787557 A EP 15787557A EP 3224465 B1 EP3224465 B1 EP 3224465B1
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Prior art keywords
magnetic
armature
curve section
magnetic actuator
end position
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EP15787557.6A
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German (de)
English (en)
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EP3224465A1 (fr
Inventor
Marco Beier
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/063—Lift of the valve needle
    • 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

Definitions

  • the invention relates to a method for determining the armature stroke of a magnetic actuator having at least one air gap and an armature, and also to a device suitable for carrying out such a method.
  • Such actuators can be used, for example, in diesel injection valves or fuel injectors, where the armature of the actuator is mechanically coupled to a valve needle of the injector and the armature stroke determines the opening and closing behavior of the injector and therefore the injection quantity metering.
  • the armature stroke may change during operation, which may also change the performance of the entire injection system. For example, if the armature stroke is too small, undesired throttling of the injection valve occurs, whereas if the armature stroke is too high, e.g. as a result of signs of wear, so-called closing bumpers occur to a greater extent, which can considerably impair the valve function.
  • a method which is used for determining the time of commencement of a movement of a coil drive having a fuel injector for an internal combustion engine of a motor vehicle.
  • the method includes the steps of detecting a current waveform through a coil of the coil drive, detecting a voltage waveform of a voltage applied to the coil, determining a magnetic hysteresis curve based on the detected current waveform and the detected voltage waveform, comparing the magnetic hysteresis curve with a first one predetermined magnetic hysteresis curve characteristic of a fuel injector fixed in a first end position, and determining the time of commencement of the movement based on the comparing step.
  • the method with the features of claim 1 has the advantage that the armature stroke of a magnetic actuator with relatively low metrological and computational effort can be determined.
  • the method comprises the steps of determining a magnetic hysteresis curve of the magnetic actuator, selecting a curve section in the magnetic hysteresis curve embossed by a transition of the armature from a first stationary end position to a second stationary end position, determining the magnetic energy state of the magnetic actuator in the second stationary one End position of the armature on the basis of the curve of the selected curve section, generating a curve section in the interval of the selected curve section, the generated curve section simulates the magnetic actuator with the fixed in its first end position anchor to determine a corresponding magnetic energy state of the magnetic actuator, and the comparison of the two energy states of the magnetic actuator based on the curves of the selected curve section and the generated curve section in order to determine the armature stroke based thereon.
  • the method according to the invention is also advantageously suitable for magnetic actuators designed as injectors in order to continuously monitor or
  • the interlinked magnetic flux ⁇ is detected as a function of the current I through a coil of the magnetic actuator.
  • the chained magnetic flux is proportional to the integral ⁇ U ind dt and by measuring the in a measuring coil of the Magnetactor induced voltage and subsequent time integration metrologically relatively easily determined.
  • the generation of the curve section is effected by means of at least one polynomial, wherein the coefficients and the order of the polynomial are selected such that a smooth transition is achieved in each case at connection points of the magnetic hysteresis curve predetermined by interval boundaries of the selected curve section.
  • a smooth transition is to be understood as meaning that the function generating the curve section has continuous first derivatives at the transition points or interpolation points or boundary points to the detected hysteresis curve.
  • the generated curve section can be fitted without discontinuities in the connection points of the hysteresis curve.
  • the extrapolation interval for the at least one polynomial is decomposed into at least two subintervals, wherein the position of a node between the subintervals is determined by projecting a point of the selected curve section onto a coordinate axis, the point being approximately one Event corresponds to where the anchor reaches its second stationary end position.
  • the at least one polynomial is formed as a cubic spline function in the extrapolation interval predetermined by the interval boundaries of the selected curve segment.
  • An embodiment variant of the invention that is particularly easy to implement provides for selecting a curve section that is caused by a drop in the armature from its first stationary end position to its second stationary end position.
  • the drop motion of the armature in the hysteresis loop of the magnetic actuator is much more pronounced and identifiable than the opposite armature pull motion, since the latter typically runs into the magnetic saturation region of the hysteresis loop and is relatively weak due to the rather flat curve.
  • a preferred embodiment of the method according to the invention is that the profile of the curve section generated by at least one polynomial in the first sub-interval has a constant slope, which is determined by means of a physical characteristic characterizing the Ankerhub the magnetic actuator and defined by the quotient .DELTA.I /,, where .DELTA.I a current strength difference, which is defined by the difference between a current I 'by the magnetic actuator at the first stationary end position dropped anchor and a current I "by the magnetic actuator fixed in the first stationary end position anchor, while with ⁇ one of the current intensity difference .DELTA.I
  • This physical parameter is on the one hand a theoretically deducible and on the other hand an experimentally obtainable auxiliary variable with which the coefficients of the polynomial in the first subinterval can be determined. To obtain this characteristic or auxiliary quantity, two series of measurements are sufficient, which are carried out once for each type of magnet actuator.
  • ⁇ E is the magnetic energy difference between the energy states corresponding to the selected curve segment and the generated curve segment
  • n is the number of windings of the coil of the magnetic actuator
  • ⁇ 0 is the magnetic permeability of the vacuum
  • ⁇ is the concatenated magnetic flux
  • a 1 and A 2 Cross-sectional areas of the air gap are designated.
  • a suitable apparatus for carrying out the method according to the invention comprises a signal generating means for driving the Magnetaktors and a detection device for determining a hysteresis of the controlled Magnetaktors and a computing and evaluation, wherein the evaluation device is adapted to select one of a transition of the armature from a first stationary end position in a second stationary end position embossed curve section in the magnetic hysteresis curve, for determining the magnetic energy state of the magnetic actuator in the second stationary end position of the armature based on the course of the selected curve section, for generating a curve section in the interval of the selected curve section, wherein the generated curve section with the magnetic actuator with simulates the fixed in its first end position anchor to determine a corresponding magnetic energy state of the magnetic actuator, and for comparing the two energy states of the magnetic actuator based on the curves of the selected curve section and the generated curve section to determine the armature stroke based thereon.
  • Fig. 1 to illustrate the principle of the inventive method, the course of the ⁇ characteristic of a magnetic circuit as a hysteresis loop 10 as a function of current I.
  • the current I is plotted on the abscissa by the excitation coil of the magnetic circuit, while on the ordinate of the chained magnetic flux ⁇ is applied.
  • the chained magnetic flux ⁇ is determined by integration of the voltage U ind induced in a measuring coil of the magnetic circuit over the time t, that is, by the integral ⁇ U ind dt.
  • the invention is based on the finding that movements of the armature relative to the air gap and thus the associated switching operations of the magnetic circuit or actuator manifest themselves on the curve of the hysteresis loop 10.
  • Such armature movements are characterized by falling or tightening of the armature relative to the air gap of the actuator.
  • the switch operation of the actuator correspondingly associated with drop of the armature from the area of the air gap is impressed on a curve section of the hysteresis curve 10 and can be seen from a depression 11 in the course of the upper returning curve branch 13 in the first quadrant of the diagram; a contrast opposite movement of the armature, so tightening the armature in the direction of the air gap manifests itself, for example, in the case of negative function values of ⁇ and I in the course of the upper returning curve branch 13 in the third quadrant of the diagram with reference to a curve with a slight slope 14 in the vicinity of the saturation region 15 '.
  • the hysteresis loop 10 thus shows in each case two anchor dropping movements and two anchor pulling movements, ie a total of four switching operations, which are characterized by local ⁇ changes.
  • Fig. 2 shows the upper or returning curve branch 13 of the hysteresis curve or ⁇ characteristic curve 10 of the magnetic circuit or magnetic actuator in the first quadrant of the diagram of FIG Fig. 1 ,
  • the curve branch 13 has - at current levels below saturation 15 - a curve section 20, which is characterized by the drop of the armature from its end position on a magnetic core towards an end position or rest position away from the magnetic core.
  • this energy state E 1 can be determined by the area between the course of the curve section 20 and the ⁇ -axis is calculated by integration within the limiting the curve section 20 interval limits, as will be explained in detail below.
  • This energy state E 2 can also be determined by calculating the area between the course of this extrapolated curve section 22 and the ⁇ -axis by integration within the interval limits delimiting the extrapolated curve section 22, as will be explained in detail below. Since the cross-sectional area of the air gap remains constant both in the lowered and in the tightened armature position, the armature stroke can be determined from the difference between the two energy states E 1 -E 2 , taking into account the cross-sectional area of the air gap. In order to form the curve section 22 between the interval boundaries K and P2 by extrapolation, a function F is generated which is formed by at least one polynomial.
  • a smooth transition should be understood to mean that the function has continuous first derivatives at the transition points or interpolation points or boundary points to the detected hysteresis curve.
  • the approximation interval [K, P2] of the generated curve section is divided into two subintervals, wherein a first subinterval [K, P1] with a function F1 generated therein covers the range of relatively small current intensities from K to P1 (I 1 , ⁇ 1 ), while a second subinterval [P1, P2] adjoins the first subinterval to higher current intensities and with a function F2 generated therein from the point P1 (I 1 , ⁇ 1 ) to the point P2 (I 2 , ⁇ 2 ) extends.
  • the two functions F1 and F2 are subfunctions of the function F.
  • the position of the node P1 between the two subintervals results from the analysis of the selected curve section 20, because in the selected curve section 20 the point at the current value I1 marks the rest position of the armature in the fallen state, because the anchor at P2 a there incurring waste movement, which is superimposed by oscillations 27 due to Ankerprellvor réellen; These oscillations 27 are at least approximately decayed at the current value I1.
  • the projection of this point in the curve of the selected curve section 20, where the oscillations have subsided 27 and thus the armature is in its rest position, on the horizontal coordinate axis thus determines the position of the node P1 between the sub-intervals F1 and F2.
  • a polynomial of first order ie a straight line segment with constant slope
  • the physical characteristic variable AKG characterizing the armature stroke behavior of the magnetic actuator which serves as a physical auxiliary variable for extrapolation in this subinterval, to a good approximation has a constant course, as in the rest of the Fig. 4 illustrated diagram, and thus represents a measure of the slope .DELTA.I / ⁇ of the straight segment.
  • a polynomial is selected whose order and coefficients are so dimensioned that the respective slope of the function F2 at the subinterval boundaries P1, P2 coincides with the slopes there and a practically flowing course is achieved therebetween ,
  • f is the function of the detected hysteresis curve in the curve connecting piece 24 at current levels I ⁇ I2 towards the saturation region 15, where the armature of the magnetic actuator is still in the tightened position.
  • F 2 I 2 f I 2
  • I K f I K
  • the coefficients of the polynomials assigned to the subfunctions F1 and F2 are calculated or set in order to insert or adapt the generated curve section 22 into the connection points K and P2 of the measured hysteresis curve 10.
  • the function F composed of the subfunctions F1 and F2 is designed as a cubic spline function in the two subintervals.
  • an iteration process is initialized in the first subinterval between K and P1, wherein the predetermined by the physical characteristic AKG slope is inserted into the polynomial and then this starting value is varied until in the Interaction with the polynomial acting in the second subinterval, minimizing the deviations in the boundary points K and P2 and thereby allowing a continuous course of the generating function F over both subintervals - without discontinuities at the boundary points.
  • the profile of the selected curve section 20 is integrated within the limits of the first subinterval and, on the other hand, the course of the generated curve section 22 is integrated within the limits of the first subinterval, the respective integration via the Differential d ⁇ occurs.
  • the first subinterval as the integration region for the two integrations, oscillations caused by armature bounce movements in the second subinterval of the selected curve section 20 are not considered in the calculation of the integrals and thus can not falsify the calculation.
  • a coordinate transformation or coordinate shift is performed such that the curve sections 20 and 22 pass through the coordinate zero point.
  • the two integrations are performed to calculate the two energy states, whereupon the difference between the two integration results is formed, which is a measure of the energy difference .DELTA.E Ankerhub represents.
  • the air gap cross section of the magnetic actuator is additionally taken into account.
  • ⁇ E is the magnetic energy difference between the energy states E 1 and E 2 corresponding to the selected curve segment 20 and the generated curve segment 22, where n is the number of windings of the coil of the magnetic actuator, ⁇ 0 is the magnetic permeability, ⁇ is the concatenated magnetic flux and A1 and A2 cross-sectional areas of the air gap, respectively.
  • the magnetic permeability ⁇ 0 of the vacuum is defined as 1.26 ⁇ 10 -6 VsA -1 m -1 .
  • H is the magnetic field strength
  • B denotes the magnetic field.
  • B ⁇ 0 H
  • B ⁇ / (n A)
  • H 1 and h 2 denote the different heights of the air gap as a function of the anchor end position.
  • the integrand I denotes the current flow of the function in the first subinterval, while d ⁇ denotes the differential.
  • FIG. 3A, 3B and 4 illustrate the physical principles on which the inventive method is based.
  • Fig. 3A shows the characteristic curves for two different magnetic core materials of a magnetic circuit or magnetic actuator, each with different sized air gaps d1, d2 and d3, wherein the concatenated magnetic flux ⁇ is plotted as a function of the current I through the magnetic circuit.
  • the first magnetic core material is shown by dashed curves, while the second magnetic core material is shown by solid curves.
  • Fig. 3B shows a diagram in which for the two different magnetic core materials of the respective magnetic circuit or magnetic actuator of Fig. 3A the magnetic field B is plotted as a function of the magnetic field strength H, wherein the first magnetic core material is shown by a dashed curve, while the second magnetic core material is shown by a solid curve. Thereafter, as H increases, the first magnetic core material has a lower B value and hence a lower energy density than the second magnetic core material. So it's off FIGS. 3A and 3B it can be seen that the different magnetic properties of the two Magnetic core materials energetically manifest in the two characteristics shown.
  • Fig. 4 shows the course of the physical characteristic AKG as a function of the concatenated magnetic flux ⁇ for a designed as a solenoid valve with armature magnetic actuator or magnetic circuit in different embodiments, which comprise two different magnetic core materials and two determined by different sized air gaps armature strokes.
  • the physical characteristic AKG is plotted in the unit A • V -1 • s -1 .
  • the abscissa represents the concatenated magnetic flux ⁇ in the unit V • s.
  • the AKG characteristics for the magnetic actuator formed with a first magnetic core material are shown by two dashed curves 28, 28 ', while the AKG characteristics for the magnetic actuator formed with a second magnetic core material are illustrated by two solid curves 29, 29'.
  • the two lower characteristic curves 28, 29 differ from the two upper characteristic curves 28 ', 29' in that the air gap in the two upper characteristic curves 28 ', 29' is dimensioned to be greater in the lowered armature position than in the two lower characteristic curves 28, 29.
  • Fig. 5 shows a flowchart with the essential process steps of the inventive method 100.
  • the hysteresis loop ie the ⁇ -characteristic of the magnetic actuator measured by the current traversed and thereby detected for each set current value each induced in a measuring coil voltage U ind is determined in order to determine ⁇ values assigned to the set current values on the basis of the integral ⁇ U ind dt and store the value pairs (I, ⁇ ) determined overall in a memory field.
  • a curve segment is selected from the hysteresis loop detected in this way, which is characterized by a transition of the armature, preferably by a drop motion of the armature from the air gap, wherein the value pairs (I, ⁇ ) lying in the interval of the selected curve segment are extracted become.
  • the magnetic energy E 1 of the magnetic actuator is calculated on the basis of the course of the selected curve section.
  • a function is generated in the interval of the selected curve section, which simulates the magnetic actuator in an armature position in which the armature remains fixed in its first initial position, that is preferably fixed to the magnetic core.
  • a polynomial preferably a cubic spline function
  • the magnetic energy E 2 of the magnetic actuator is calculated based on the course of the generated function.
  • Step 107 the armature stroke is determined by means of the energy difference determined in the previous step 106 and the cross-sectional area of the air gap of the magnetic actuator.
  • Fig. 6 shows a diagram 30 with a voltage profile 31 and a current profile 32 for symmetrically driving a magnetic actuator by means of a preferably designed as an electronic control unit signal generator, the signal amplitude A of the voltage applied to the coil of the solenoid actuator voltage U and the current flowing through the coil I as a function of Time t is shown.
  • the voltage is exemplified as a square wave signal having a positive signal level + U ECU and a negative signal level -U ECU (ECU: electronic control unit), while the current I is set in a ramp shape.
  • Fig. 7A shows a diagram 40 with a voltage profile 41 and a current profile 42 for one-sided control of a magnetic actuator by means of a preferably designed as an electronic control unit signal generator, wherein plotted on the ordinate, the signal amplitude A of the voltage and the current is while on the abscissa the time t is shown.
  • This control differs from the in Fig. 6 shown control in that only positive rectangular pulses with a signal level + U ECU for the voltage U and positive current ramps for the current I are provided.
  • the determination of the coil resistance R of the magnetic actuator takes place in the constant current range 42 '.
  • This modified embodiment of the control is also suitable for determining the armature stroke in a magnetic actuator designed as an injection valve or injector.
  • the ⁇ characteristic as a function of the current I detected as a hysteresis curve in the case of single-sided control is restricted exclusively to the first quadrant and in FIG Fig. 7B shown. Since the determination of the ⁇ values takes place by temporal integration of the induced voltage U ind , the one-sided control with positive voltage and current signals, the integration constant of this integration remains indefinite, so that the curve for both the leading and the returning branch passes through the coordinate zero point , in reality, however, by the remanent magnetization value shifted the ordinate intersects.
  • the leading branch 16 is obtained by increasing the current to the saturation region 15, wherein before the saturation region 15 is the current threshold at which the anchor suit occurs, while the returning branch results from the saturation region 15 by reducing the current, wherein the armature drop at a current threshold below the saturation region.
  • the extrapolated curve section 22 is calculated for the selected curve section.
  • the device intended for carrying out the method according to the invention comprises a signal generating device for driving the magnetic actuator and a detection device for determining a hysteresis curve 10 of the controlled magnetic actuator and a computing and evaluation device, wherein the computing and evaluation is designed to select one of a transition of the armature a first stationary end position in a second stationary end position embossed curve section 20 in the magnetic hysteresis curve 10, for determining the magnetic energy state of the magnetic actuator in the second stationary end position of the armature based on the course of the selected curve section 20, for generating a curve section 22 in the interval of the selected curve section 20, wherein the generated curve section 22 simulates the magnetic actuator with the fixed in its first end position anchor to a corresponding magnetic energy state of the magnetic actuator and to compare the two energy states of the magnetic actuator based on the curves of the selected curve section 20 and the generated curve section 22 to determine the armature stroke based thereon.
  • the detection device is expediently designed as a current / voltage measuring device.
  • the computing and evaluation device preferably has a processor with at least one memory in which, on the one hand, the method according to the invention is stored as a computer program and, on the other hand, measurement data and calculated data are temporarily stored.
  • the computing and evaluation can be designed as a computer.

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Claims (11)

  1. Procédé d'identification de la course d'induit d'un actionneur magnétique qui possède au moins un entrefer et un induit, comprenant les étapes de procédé suivantes :
    - détermination d'une courbe d'hystérésis (10) magnétique de l'actionneur magnétique,
    - sélection d'une portion de courbe (20) dans la courbe d'hystérésis (10) magnétique marquée par une transition de l'induit d'une première position d'extrémité fixe en une deuxième position d'extrémité fixe,
    - détermination de l'état d'énergie magnétique de l'actionneur magnétique dans la deuxième position d'extrémité fixe de l'induit à l'aide du tracé de la portion de courbe (20) sélectionnée,
    - génération d'une portion de courbe (22) sur l'intervalle de la portion de courbe (20) sélectionnée, la portion de courbe (22) générée simulant l'actionneur magnétique avec l'induit immobilisé dans sa première position d'extrémité en vue de déterminer un état d'énergie magnétique correspondant à cela de l'actionneur magnétique,
    - comparaison des deux états d'énergie de l'actionneur magnétique en se basant sur les tracés de la portion de courbe (20) sélectionnée et de la portion de courbe (22) générée afin d'identifier la course d'induit en s'appuyant sur ceux-ci.
  2. Procédé selon la revendication 1, caractérisé en ce que la différence des deux états d'énergie est formée en vue de les comparer.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la génération de la portion de courbe (22) est effectuée au moyen d'au moins un polynôme, les coefficients et l'ordre du polynôme étant choisis de telle sorte qu'une transition lisse est à chaque fois obtenue au niveau de points de raccordement (K, P2) de la courbe d'hystérésis (10) magnétique prédéfinis par des limites d'intervalle de la portion de courbe (20) sélectionnée.
  4. Procédé selon la revendication 3, caractérisé en ce que l'intervalle pour l'au moins un polynôme est décomposé en au moins deux intervalles partiels, la position d'un noeud (P1) entre les intervalles partiels étant déterminée par la projection d'un point de la portion de courbe (20) sélectionnée sur un axe de coordonnée, le point correspondant approximativement à un événement où l'induit arrive dans sa deuxième position d'extrémité fixe.
  5. Procédé selon la revendication 4, caractérisé en ce que le tracé de la portion de courbe (22) générée au moyen d'au moins un polynôme présente une pente constante dans un premier intervalle partiel, laquelle est fixée au moyen d'une grandeur caractéristique physique caractérisant le comportement de courbe d'induit de l'actionneur magnétique et définie par le quotient ΔI/ψ, ΔI désignant une différence d'intensités de courant qui est définie par la différence entre un courant I' à travers l'actionneur magnétique lorsque l'induit a chuté hors de la première position d'extrémité fixe et un courant I'' à travers l'actionneur magnétique lorsque l'induit est immobilisé dans la première position d'extrémité fixe, alors que ψ désigne un flux magnétique composé associé à la différence d'intensités de courant AI.
  6. Procédé selon l'une des revendications 3 à 5, caractérisé en ce que l'au moins un polynôme, dans l'intervalle d'extrapolation prédéfini par les limites d'intervalle de la portion de courbe (20) sélectionnée, est réalisé sous la forme d'une fonction spline cubique.
  7. Procédé selon l'une des revendications 4 à 6, caractérisé en ce que l'état d'énergie de la portion de courbe (20, 22) respective est déterminé en effectuant une intégration sur le tracé de la plage de courbe (20, 22) respective à l'intérieur des limites d'intervalle du premier intervalle partiel.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la détermination de la courbe d'hystérésis (10) magnétique de l'actionneur magnétique est effectuée en détectant le flux magnétique composé ψ en fonction du courant I à travers une bobine de l'actionneur magnétique.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'une portion de courbe (20) est sélectionnée, laquelle est marquée par une chute de l'induit de sa première position d'extrémité fixe dans sa deuxième position d'extrémité fixe.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que l'identification de la course d'induit est effectuée en prenant en compte la surface de section transversale totale de l'au moins un entrefer par un calcul de la course d'induit Δh conformément à l'équation suivante : Δ ⁢ h = 2 ⋅ Δ ⁢ E ⋅ n 2 ⋅ μ 0 Ψ 2 ⋅ 1 A 1 + 1 A 2 ,
    Figure imgb0014
     ΔE désignant la différence d'énergie magnétique entre les états d'énergie correspondant à la portion de courbe (20) désignant sélectionnée et à la portion de courbe (22) générée, n désignant le nombre de spires de la bobine de l'actionneur magnétique, µ0 désignant la perméabilité magnétique du vide, ψ désignant le flux magnétique composé, et A1 et A2 désignant les surfaces de section transversale de l'entrefer.
  11. Arrangement pour mettre en oeuvre le procédé selon l'une des revendications 1 à 10, comprenant un dispositif de génération de signal destiné à exciter l'actionneur magnétique et un dispositif de détection destiné à déterminer une courbe d'hystérésis (10) de l'actionneur magnétique excité ainsi qu'un dispositif de calcul et d'interprétation, le dispositif d'interprétation étant configuré pour sélectionner une portion de courbe (20) dans la courbe d'hystérésis (10) magnétique marquée par une transition de l'induit d'une première position d'extrémité fixe en une deuxième position d'extrémité fixe, pour déterminer l'état d'énergie magnétique de l'actionneur magnétique dans la deuxième position d'extrémité fixe de l'induit à l'aide du tracé de la portion de courbe (20) sélectionnée, pour générer une portion de courbe (22) sur l'intervalle de la portion de courbe (20) sélectionnée, la portion de courbe (22) générée simulant l'actionneur magnétique avec l'induit immobilisé dans sa première position d'extrémité en vue de déterminer un état d'énergie magnétique correspondant à cela de l'actionneur magnétique, et pour comparer les deux états d'énergie de l'actionneur magnétique en se basant sur les tracés de la portion de courbe (20) sélectionnée et de la portion de courbe (22) générée afin d'identifier la course d'induit en s'appuyant sur ceux-ci.
EP15787557.6A 2014-11-27 2015-10-27 Procédé pour déterminer le trajet d'armature d'un actionneur magnétique Active EP3224465B1 (fr)

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DE102014224321.1A DE102014224321A1 (de) 2014-11-27 2014-11-27 Verfahren zum Ermitteln des Ankerhubs eines Magnetaktors
PCT/EP2015/074903 WO2016083050A1 (fr) 2014-11-27 2015-10-27 Procédé pour déterminer le trajet d'armature d'un actionneur magnétique

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DE102015226189A1 (de) 2015-12-21 2017-06-22 Robert Bosch Gmbh Ankerhubbestimmung durch Messung magnetischer Hysteresekurven
DE102017212774A1 (de) * 2017-07-25 2019-01-31 Zf Friedrichshafen Ag Steuerung eines Reluktanzaktuators
DE102017218076A1 (de) 2017-10-11 2019-04-11 Robert Bosch Gmbh Verfahren zur Herstellung eines elektromagnetisch betätigbaren Steuerventils, elektromagnetisch betätigbares Steuerventil sowie Kraftstoffinjektor
DE102017125005B3 (de) * 2017-10-25 2019-01-31 Ilmenauer Mechatronik GmbH Modellbasierte Bestimmung und Auswertung von Funktionszuständen eines sensorlosen elektromagnetischen Aktors
DE102019103362A1 (de) * 2019-02-11 2020-08-13 Liebherr-Components Deggendorf Gmbh Injektoreinheit zum Einspritzen von Kraftstoff und Verfahren zum Betreiben einer solchen
DE102022212456A1 (de) 2022-11-22 2024-05-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Ermitteln eines Hubverlaufs eines Ankers in einem Magnetaktor

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DE10034830C2 (de) * 2000-07-18 2003-02-27 Isermann Rolf Verfahren zur Rekonstruktion der Ankerbewegung eines elektromagnetischen Aktors
DE10332595B4 (de) * 2003-07-17 2008-02-14 Siemens Ag Vorrichtung und Verfahren zum Ansteuern elektrischer Schaltgeräte
DE102006012657A1 (de) * 2006-03-20 2007-09-27 Siemens Ag Steuergerät mit einem Regler zur Regelung des elektrischen Spulenstroms eines Regelmagnetventils
DE102009042777B4 (de) * 2009-09-25 2014-03-06 Kendrion (Donaueschingen/Engelswies) GmbH Elektromagnetischer Aktor
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DE102014224321A1 (de) 2016-06-02
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EP3224465A1 (fr) 2017-10-04

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