EP1014395A2 - Method and apparatus for reducing the noise of electromagnetically operated devices - Google Patents
Method and apparatus for reducing the noise of electromagnetically operated devices Download PDFInfo
- Publication number
- EP1014395A2 EP1014395A2 EP99123805A EP99123805A EP1014395A2 EP 1014395 A2 EP1014395 A2 EP 1014395A2 EP 99123805 A EP99123805 A EP 99123805A EP 99123805 A EP99123805 A EP 99123805A EP 1014395 A2 EP1014395 A2 EP 1014395A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- switching
- transition function
- time
- electromagnet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2201/00—Electronic control systems; Apparatus or methods therefor
-
- 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
- H01F2007/1894—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings minimizing impact energy on closure of magnetic circuit
Definitions
- the invention relates to a method for reducing the Noise development when actuating electromagnetic actuated devices, wherein a switching operation of the Device in the area of a transition function with limited The current-time curve of the electromagnet increases.
- a method of the type mentioned is from DE-C2-3425574 known. It will cover the entire area between the minimum current (zero amps) and the maximum current of the Pass through the solenoid with a gradual increase.
- the point at which the plunger core of the electromagnet is connected its movement begins always in the range of the above Rise. If the period within which the Electromagnet should switch, is relatively short, this leads to make the current rise on a relatively steep slope must, which can lead to the switching of the Electromagnet occurs at a higher current than would be absolutely necessary. This would become undesirably stronger Cause noise and can increase wear.
- the invention has for its object an accurate Switching the electromagnet at the lowest possible Rate of change (slope) of the current enable.
- This object is achieved according to the invention in that the transition function only a part of the Current variation for initiating a switching operation, and that a time before and after the transition function Compared to the transition function steeper increase in current from a minimum value to the transition function or from the Transition function up to a maximum value of the current is made.
- Another advantage of the invention is that the Current from its lowest value, usually zero amps, up to the value at which the slope of the current curve which is different from a very big slope starts to go through very quickly. Besides, can the area between the stream at the end of the gradual Incline up to the maximum possible value of the current also run through very quickly (current jump).
- benefits lie in the fact that to generate the current in the Coil of the electromagnet used Semiconductor switch elements only in a relatively short time Work area where they have controlled resistance form; Noticeable heat is generated in this area according to the product UxI. This is the area where the current gradually increases (or decreases) over time. In the other areas, however, the current rises within very short time (limited by the available standing voltage and inductance), so that in this Areas of little heat are formed in the semiconductor switch element becomes.
- the current just reached at the end of the operation described its maximum value, and this takes place in that the semiconductor switch element in one as low-resistance state as possible (saturation range, nonlinear), in which hardly Electricity heat losses arise. Therefore, it can Semiconductor switch element the electromagnet in this Condition without hesitation for a long time, possibly many Hours hold without the semiconductor switch element is thermally endangered.
- the described type of control of the electromagnet in each case ensures that the Electromagnet switches as long as there is enough voltage Available.
- the time at which the electromagnet switches is detected by measurement, and that a regulation is provided is that ensures that the switching process in the area of gradual slope.
- Another advantage is that the time at which the switching process occurs can be restricted relatively narrowly.
- the Electromagnet switches to determine at which point of the current-time curve the Electromagnet switches, the entire current range in shape is traversed once on a gradually rising curve. Then a time and with respect to the current can then restricted area around the point of switching the Electromagnets are picked out around and the current can be from zero to the beginning of this range abruptly rise and continue from the end of this area jump to its maximum value.
- the one in between lying area of the curve can with a transition function the current-time curve can be given a smaller slope than in the entire traversing of the Current range in the form of an increasing curve.
- This Embodiment of the invention is particularly suitable for Devices that contain a circuit according to the invention manufacturing or after longer periods of time be checked automatically to find the optimal one Set the switching time of the electromagnet (again) or readjust (adaptation).
- the one with such Running through the entire current range determined values can be stored in permanent memory in the device that contains the electromagnet, is housed, stored become and stand even after long periods in which the electromagnet was not in use.
- a device according to the invention, the inventive Executes the procedure, has one regarding their Parameter controllable control device for influencing the Current course on, as well as advantageously a memory in which Parameters for the control device can be stored.
- Point in time at which the electromagnet switches can be. According to an embodiment of the invention this is done by examining the current or the Voltage applied to the coil of the electromagnet. In the moment the anchor or general that moving part of the electromagnet starts to move, changes namely the inductance of the magnet arrangement, and this turns into a sudden change in tension and Current change noticeable, the time recorded by measurement can be. In addition, according to one embodiment, the The amplitude of this current change or voltage change is detected become. The amount or energy content of this change is an indication of the size of the excess energy and thus the final speed of the anchor.
- the Switching process recognized by a pressure sensor.
- the Pressure sensor should be arranged so that it through the Movement of the movable valve part caused a change of the pressure in the fluid.
- other sensors can be used: e.g. a microphone, which is mounted so that in this example it corresponds to that of Solenoid and / or valve when switching (especially when Attaching the armature or a valve plate at Reaching its final state) or an accelerometer that shocks records.
- the microphone can also be mounted so that it detects the sound in the fluid. With a suitable selection, therefore the pressure sensor also take over the function of the microphone.
- Fig. 1 the switching on takes place between times t0 and t3, and switching off between times t4 and t7, on the other hand, in normal operation restricted areas t1 to t2 (switching on) or t5 to t6 (switch off).
- the current is zero.
- the current rises very quickly to a value IE1, in which a switching operation of the electromagnet with certainty not yet taking place.
- IE1 a linear ramp function or a gradual one Rise in current until time t2 when the current has the value IE2.
- the Electromagnet Within this ramp between the At times t1 and t2 the Electromagnet.
- that will Semiconductor switch element that acts as an actuator for the current serves to a largely low-resistance value switched, which leads to the maximum current Iein in FIG. 1.
- the current IA5 when switching off, the current IA5 is at the beginning the falling ramp at time t5 is lower than at t2; in other embodiments, the current IA5 could be the same how or even be greater than the current IE2. From the time t6 to t7 is zero current.
- Fig. 2 shows an arrangement 1 with a solenoid valve 3, the contains an electromagnet with a magnet coil 4.
- the Solenoid valve 3 is located in a pipe 7, in which a Fluid (in the example a gas) is from a Fluid source 8, which in the example with an electrical Compressor is equipped for air and air can provide different pressure through which Pipeline 7 conveyed to a container 9 under pressure becomes when the solenoid valve 3 is open (permeable) and the container 9 is to be filled. Will the pressure of the Fluid source 8 brought to a smaller value than in Container 9, so when the solenoid valve 3 is open, the container 9 emptied or the pressure in it reduced.
- To the Pipeline 7 is connected to a pressure sensor 11 on the one hand to ensure the operation of the arrangement and for any monitoring task, on the other hand also serves to switch the switching time of the solenoid valve detect.
- the current through the solenoid 4 of the solenoid valve 3 is regulated by a current control device that in connection with a controllable semiconductor switching element, namely in Example a transistor 17, which provides a current source.
- the control electrode (base) of transistor 17 is connected to the Output of an operational amplifier 19 connected.
- the Transistor 17 enables blocking, a low impedance Gating, or a continuous Change in resistance. His collector is in series production switched solenoid 4 with a positive Supply voltage UB connected.
- the pressure sensor 11 delivers a when recognized Change in pressure necessary for the start of a change in state of the Solenoid valve 3, more precisely for the start of the movement of the Anchor of the electromagnet is characteristic of a signal to a block 23 "adaptation", which is a control device contains that with an electronic memory 25th cooperates.
- Block 23 delivers a signal to one State transition controller 27 through which the current in the Solenoid 4 is regulated. It is also that Drawn possibility that the voltage UL at the Solenoid 4 is tapped and a block 29th "Stop detection" is supplied, which with block 23rd connected is. In addition to the time, a The change in voltage also detects its amplitude and results from it the end speed of the anchor closed.
- the state transition controller 27 contains a processor, which corresponds to the desired time course of the Current-time curve a pulse width modulated signal PWM signal) generated by integrating an analog Signal results, which is fed to the operational amplifier 19 becomes.
- the processor is assigned several circuits according to FIG. 2 together. Overall, the control is carried out so that the switching time as precisely as possible in the middle of the gradually increasing or falling part of the current-time curve is that this mentioned parts taking into account the necessary Switching accuracy and the possibility of malfunction in time are as short as possible, and that when faults occur during operation a regulation is made to just to achieve the conditions mentioned again as quickly as possible or to prevent a disturbing deviation.
- the rise (and fall) of the electricity need not be in the form of a linear ramp, but there is one here largely any curve shape (transition function) possible. This does not necessarily have to increase monotonously or sloping. It can have bends or kinks exhibit. According to the invention, this transition function or also the ramp practically at the moment when the The armature of the electromagnet sets in motion (especially when increasing current), which is detected by control one receive a briefly descending course so that the anchor is accelerated as little as possible.
- transition function curve shape
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Vermindern der Geräuschentwicklung bei der Betätigung von elektromagnetisch betätigten Vorrichtungen, wobei ein Schaltvorgang der Vorrichtung im Bereich einer Übergangsfunktion mit begrenzter Steigung der Strom-Zeit-Kurve des Elektromagnets erfolgt.The invention relates to a method for reducing the Noise development when actuating electromagnetic actuated devices, wherein a switching operation of the Device in the area of a transition function with limited The current-time curve of the electromagnet increases.
Elektromagnetisch betätigte Vorrichtungen sind unter anderem elektromagnetische Ventile (Magnetventile) und Relais. Sie weisen einen Elektromagnet mit einer Magnetspule auf. Ein Anker (= vom Elektromagnet angetriebenes bewegliches Teil) ändert seine Lage (dies wird hier als der Schaltvorgang des Elektromagnets bezeichnet), wenn ein Strom in der Magnetspule z.B. bei seinem Anstieg einen bestimmten Wert erreicht.Electromagnetically operated devices are among others electromagnetic valves (solenoid valves) and relays. she have an electromagnet with a magnetic coil. An anchor (= moving part driven by the electromagnet) changes its location (this is called the switching process of the Electromagnet) if there is a current in the solenoid e.g. reaches a certain value when it rises.
Ein Verfahren der eingangs genannten Art ist aus der DE-C2-3425574 bekannt. Es wird der gesamte Bereich zwischen dem minimalen Strom (Null Ampere) und dem maximalen Strom der Magnetspule mit einem allmählichen Anstieg durchlaufen. Dabei liegt der Punkt, an dem der Tauchkern des Elektromagnets mit seiner Bewegung beginnt, immer im Bereich des genannten Anstiegs. Wenn der Zeitraum, innerhalb von dem der Elektromagnet schalten soll, relativ kurz ist, so führt dies dazu, daß der Strom in einer relativ steilen Steigung ansteigen muß, was dazu führen kann, daß das Schalten des Elektromagnets bei einem höheren Strom erfolgt, als unbedingt nötig wäre. Dies würde zu unerwünscht starker Geräuschentwicklung führen und kann den Verschleiß erhöhen.A method of the type mentioned is from DE-C2-3425574 known. It will cover the entire area between the minimum current (zero amps) and the maximum current of the Pass through the solenoid with a gradual increase. Here is the point at which the plunger core of the electromagnet is connected its movement begins, always in the range of the above Rise. If the period within which the Electromagnet should switch, is relatively short, this leads to make the current rise on a relatively steep slope must, which can lead to the switching of the Electromagnet occurs at a higher current than would be absolutely necessary. This would become undesirably stronger Cause noise and can increase wear.
Der Erfindung liegt die Aufgabe zugrunde, ein genaues Schalten des Elektromagnets bei möglichst geringer Änderungsgeschwindigkeit (Steigung) des Stroms zu ermöglichen.The invention has for its object an accurate Switching the electromagnet at the lowest possible Rate of change (slope) of the current enable.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Übergangsfunktion nur einen Teilbereich der Stromvariation zum Veranlassen eines Schaltvorgangs umfaßt, und daß zeitlich vor und nach der Übergangsfunktion ein im Vergleich zur Übergangsfunktion steilerer Anstieg des Stroms von einem Minimalwert bis zur Übergangsfunktion bzw. von der Übergangsfunktion bis zu einem Maximalwert des Stroms vorgenommen wird.This object is achieved according to the invention in that the transition function only a part of the Current variation for initiating a switching operation, and that a time before and after the transition function Compared to the transition function steeper increase in current from a minimum value to the transition function or from the Transition function up to a maximum value of the current is made.
Ein Vorteil der Erfindung liegt darin, daß der Elektromagnet mit einer geringstmöglichen Energie geschaltet werden kann; dadurch ist der Energieüberschuß, der auf den Anker (= das bewegliche Teil der Magnetanordnung) des Elektromagnets übertragen wird, gering, und dies führt zu geringen Geräuschen und kann den Verschleiß (z. B. von Relaiskontakten) verringern.An advantage of the invention is that the electromagnet can be switched with the lowest possible energy; this is the excess energy that is on the anchor (= the movable part of the magnet arrangement) of the electromagnet transmitted, low, and this leads to low Noise and can wear (e.g. from Relay contacts).
Ein weiterer Vorteil der Erfindung liegt darin, daß der Strom von seinem geringsten Wert, normalerweise Null Ampere, bis zu demjenigen Wert, an dem die Steigung der Stromkurve, die von einer sehr großen Steigung unterschiedlich ist, beginnt, sehr schnell durchlaufen werden kann. Außerdem kann der Bereich zwischen dem Strom am Ende der allmählichen Steigung bis zum maximal möglichen Wert des Stroms ebenfalls sehr schnell durchlaufen werden (Stromsprung). Vorteile liegen hierbei darin, daß zum Erzeugen des Stroms in der Spule des Elektromagnets verwendete Halbleiter-Schalterelemente nur relativ kurzzeitig in einem Bereich arbeiten, in dem sie einen gesteuerten Widerstand bilden; in diesem Bereich entsteht nämlich merkliche Wärme entsprechend dem Produkt UxI. Dies ist der Bereich, in dem der Strom mit der Zeit allmählich ansteigt (oder abfällt). In den anderen Bereichen dagegen steigt der Strom innerhalb sehr kurzer Zeit an (begrenzt durch die zur Verfügung stehende Spannung und die Induktivität), so daß in diesen Bereichen wenig Wärme im Halbleiter-Schalterelement gebildet wird.Another advantage of the invention is that the Current from its lowest value, usually zero amps, up to the value at which the slope of the current curve which is different from a very big slope starts to go through very quickly. Besides, can the area between the stream at the end of the gradual Incline up to the maximum possible value of the current also run through very quickly (current jump). benefits lie in the fact that to generate the current in the Coil of the electromagnet used Semiconductor switch elements only in a relatively short time Work area where they have controlled resistance form; Noticeable heat is generated in this area according to the product UxI. This is the area where the current gradually increases (or decreases) over time. In the other areas, however, the current rises within very short time (limited by the available standing voltage and inductance), so that in this Areas of little heat are formed in the semiconductor switch element becomes.
Schließlich erreicht der Strom am Ende des soeben geschilderten Vorgangs seinen maximalen Wert, und dies erfolgt dadurch, daß das Halbleiter-Schalterelement in einen möglichst niederohmigen Zustand (Sättigungsbereich, nichtlinear) gebracht wird, in welchem kaum Stromwärmeverluste entstehen. Daher kann das Halbleiter-Schalterelement den Elektromagnet in diesem Zustand ohne Bedenken längere Zeit, möglicherweise viele Stunden, halten, ohne daß das Halbleiter-Schalterelement thermisch gefährdet wird.Finally, the current just reached at the end of the operation described its maximum value, and this takes place in that the semiconductor switch element in one as low-resistance state as possible (saturation range, nonlinear), in which hardly Electricity heat losses arise. Therefore, it can Semiconductor switch element the electromagnet in this Condition without hesitation for a long time, possibly many Hours hold without the semiconductor switch element is thermally endangered.
Weiterhin wird durch die geschilderte Art der Ansteuerung des Elektromagnets in jedem Falle sichergestellt, daß der Elektromagnet schaltet, soweit genügend Spannung zur Verfügung steht.Furthermore, the described type of control of the electromagnet in each case ensures that the Electromagnet switches as long as there is enough voltage Available.
Bei einer Ausführungsform der Erfindung ist vorgesehen, daß der Zeitpunkt, an dem der Elektromagnet schaltet, meßtechnisch erfaßt wird, und daß eine Regelung vorgesehen ist, die dafür sorgt, daß der Schaltvorgang im Bereich der allmählichen Steigung liegt. Ein Vorteil liegt darin, daß Änderungen der Eigenschaften des Elektromagnets oder der Umgebungsbedingungen, beispielsweise der Temperatur, die zu einem unterschiedlichen Ansprechen des Elektromagnets führen könnten (z.B. wegen der Temperaturabhängigkeit der mechanischen Reibung), wodurch der Schaltvorgang außerhalb des Bereichs der allmählichen Steigung zu liegen kommen könnte, sich nicht auf den Zeitpunkt oder Zeitbereich des Schaltvorgangs auswirken. Weiter ist hierbei von Vorteil, daß der Zeitpunkt, in dem der Schaltvorgang eintritt, relativ eng eingeschränkt werden kann.In one embodiment of the invention it is provided that the time at which the electromagnet switches is detected by measurement, and that a regulation is provided is that ensures that the switching process in the area of gradual slope. One advantage is that Changes in the properties of the electromagnet or Environmental conditions, such as temperature, too lead to a different response of the electromagnet could (e.g. because of the temperature dependence of the mechanical friction), making the switching process outside of the gradual slope range could not focus on the timing or time range of the Impact switching operation. Another advantage is that the time at which the switching process occurs can be restricted relatively narrowly.
Bei einer Ausführungsform der Erfindung ist vorgesehen, daß zum Feststellen, an welchem Punkt der Strom-Zeit-Kurve der Elektromagnet schaltet, der gesamte Strombereich in Form einer allmählich steigenden Kurve einmalig durchlaufen wird. Anschließend kann dann ein zeitlich und bezüglich des Stroms eingeschränkter Bereich um den Punkt des Schaltens des Elektromagnets herum herausgegriffen werden und der Strom kann vom Wert Null aus zum Beginn dieses Bereichs sprungartig ansteigen und vom Ende dieses Bereichs weiterhin sprungartig zu seinem Maximalwert ansteigen. Der dazwischen liegende Bereich der Kurve kann mit einer Übergangsfunktion der Strom-Zeit-Kurve mit geringerer Steigung versehen werden als bei dem soeben geschilderten gesamten Durchlaufen des Strombereichs in Form einer ansteigenden Kurve. Diese Ausführungsform der Erfindung eignet sich besonders dafür, Geräte, die eine erfindungsgemäße Schaltung enthalten, nach der Fertigung oder auch nach jeweils längeren Zeiträumen sich automatisch überprüfen zu lassen, um den optimalen Schaltzeitpunkt des Elektromagnets (wieder) einzustellen bzw. nachzuregeln (Adaption). Die bei einem derartigen Durchlaufen des gesamten Strombereichs ermittelten Werte können in einem dauerhaften Speicher, der in dem Gerät, das den Elektromagnet enthält, untergebracht ist, gespeichert werden und stehen dann auch nach längeren Zeiten, in denen der Elektromagnet nicht in Betrieb war, zur Verfügung.In one embodiment of the invention it is provided that to determine at which point of the current-time curve the Electromagnet switches, the entire current range in shape is traversed once on a gradually rising curve. Then a time and with respect to the current can then restricted area around the point of switching the Electromagnets are picked out around and the current can be from zero to the beginning of this range abruptly rise and continue from the end of this area jump to its maximum value. The one in between lying area of the curve can with a transition function the current-time curve can be given a smaller slope than in the entire traversing of the Current range in the form of an increasing curve. This Embodiment of the invention is particularly suitable for Devices that contain a circuit according to the invention manufacturing or after longer periods of time be checked automatically to find the optimal one Set the switching time of the electromagnet (again) or readjust (adaptation). The one with such Running through the entire current range determined values can be stored in permanent memory in the device that contains the electromagnet, is housed, stored become and stand even after long periods in which the electromagnet was not in use.
Eine erfindungsgemäße Vorrichtung, die das erfindungsgemäße Verfahren ausführt, weist hierzu eine hinsichtlich ihrer Parameter steuerbare Steuervorrichtung zum Beeinflussen des Stromverlaufs auf, sowie vorteilhaft einen Speicher, in dem Parameter für die Steuervorrichtung speicherbar sind.A device according to the invention, the inventive Executes the procedure, has one regarding their Parameter controllable control device for influencing the Current course on, as well as advantageously a memory in which Parameters for the control device can be stored.
Erfindungsgemäß bestehen zahlreiche Möglichkeiten, wie der Zeitpunkt, an dem der Elektromagnet schaltet, festgestellt werden kann. Gemäß einer Ausführungsform der Erfindung erfolgt dies durch Untersuchung des Stroms oder der Spannung, die an der Spule des Elektromagnets anliegt. In dem Augenblick, in dem sich der Anker oder allgemeinen das bewegliche Teil des Elektromagnets in Bewegung setzt, ändert sich nämlich die Induktivität der Magnetanordnung, und dies macht sich in einer plötzlichen Spannungsänderung und Stromänderung bemerkbar, deren Zeitpunkt meßtechnisch erfaßt werden kann. Zusätzlich kann gemäß einer Ausführungsform die Amplitude dieser Stromänderung oder Spannungsänderung erfaßt werden. Die Höhe bzw. der Energieinhalt dieser Änderung ist ein Hinweis auf die Größe der überschüssigen Energie und somit auf die Endgeschwindigkeit des Anker.According to the invention, there are numerous options such as Point in time at which the electromagnet switches can be. According to an embodiment of the invention this is done by examining the current or the Voltage applied to the coil of the electromagnet. In the moment the anchor or general that moving part of the electromagnet starts to move, changes namely the inductance of the magnet arrangement, and this turns into a sudden change in tension and Current change noticeable, the time recorded by measurement can be. In addition, according to one embodiment, the The amplitude of this current change or voltage change is detected become. The amount or energy content of this change is an indication of the size of the excess energy and thus the final speed of the anchor.
Bei einer anderen Ausführungsform der Erfindung wird der Schaltvorgang durch einen Drucksensor erkannt. Wenn der Elektromagnet Teil eines Ventils für ein Fluid ist, kann der Drucksensor so angeordnet sein, daß er eine durch die Bewegung des beweglichen Ventilteils verursachte Änderung des Drucks in dem Fluid erkennt. Zusätzlich oder stattdessen können andere Sensoren benutzt werden: z.B. ein Mikrophon, das so montiert ist, daß es in diesem Beispiel den vom Magnet und / oder Ventil beim Schalten (insbesondere beim Anschlagen des Ankers oder eines Ventiltellers beim Erreichen seines Endzustands) erzeugten Schall aufnimmt, oder ein Beschleunigungssensor, der Erschütterungen aufnimmt. Das Mikrophon kann auch so montiert sein, daß es den Schall im Fluid erfaßt. Bei geeigneter Auswahl mag daher der Drucksensor auch die Aufgabe des Mikrophons übernehmen.In another embodiment of the invention, the Switching process recognized by a pressure sensor. If the Electromagnet is part of a valve for a fluid, the Pressure sensor should be arranged so that it through the Movement of the movable valve part caused a change of the pressure in the fluid. In addition or instead other sensors can be used: e.g. a microphone, which is mounted so that in this example it corresponds to that of Solenoid and / or valve when switching (especially when Attaching the armature or a valve plate at Reaching its final state) or an accelerometer that shocks records. The microphone can also be mounted so that it detects the sound in the fluid. With a suitable selection, therefore the pressure sensor also take over the function of the microphone.
Weitere Möglichkeiten und Einrichtungen für das Feststellen des Schaltzeitpunkts des Ankers bestehen in einer Lichtschranke, Feststellung der Durchflußänderung des Fluids, Feststellung der Änderung eines Lastkreises, z.B. bei einem Relais.Other ways and facilities for detection of the switching time of the armature consist in one Light barrier, detection of the change in flow of the Fluids, detection of the change in a load circuit, e.g. with a relay.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus
der nachfolgenden Beschreibung von Ausführungebeispielen der
Erfindung anhand der Zeichnung, die erfindungswesentliche
Einzelheiten zeigt, und aus den Ansprüchen. Die einzelnen
Merkmale können je einzeln für sich oder zu mehreren in
beliebiger Kombination bei einer Ausführungsform der
Erfindung verwirklicht sein. Es zeigen
In Fig. 1 erfolgt das Einschalten zwischen Zeitpunkten t0 und t3, und das Ausschalten zwischen Zeitpunkten t4 und t7, und zwar beim normalen Betrieb in demgegenüber eingeschränkten Bereichen t1 bis t2 (Einschalten) bzw. t5 bis t6 (Ausschalten).In Fig. 1, the switching on takes place between times t0 and t3, and switching off between times t4 and t7, on the other hand, in normal operation restricted areas t1 to t2 (switching on) or t5 to t6 (switch off).
Zwischen diesen beiden Schaltvorgängen liegt ein Zeitbereich (t2 bis t5), bei dem der Strom seinen Maximalwert hat.There is a time period between these two switching operations (t2 to t5) at which the current has its maximum value.
Vom Zeitpunkt t0 bis zum Zeitpunkt t1 ist der Strom Null. Bei t1 steigt der Strom sehr rasch auf einen Wert IE1 an, bei dem ein Schaltvorgang des Elektromagnets mit Sicherheit noch nicht stattfindet. Anschließend folgt eine in diesem Beispiel etwa lineare Rampenfunktion oder ein allmählicher Anstieg des Stroms bis zum Zeitpunkt t2, an dem der Strom den Wert IE2 hat. Innerhalb dieser Rampe zwischen den Zeitpunkten t1 und t2 erfolgt das Einschalten des Elektromagnets. Anschließend wird das Halbleiter-Schalterelement, das als Stellglied für den Strom dient, auf einen weitestgehend niederohmigen Wert geschaltet, was zu dem Maximalstrom Iein in Fig. 1 führt. Beim Ausschalten liegt im Beispiel der Strom IA5 beim Beginn der fallenden Rampe im Zeitpunkt t5 niedriger als bei t2; bei anderen Ausführungsformen könnte der Strom IA5 gleich wie oder sogar größer als der Strom IE2 sein. Vom Zeitpunkt t6 bis t7 ist der Strom Null.From time t0 to time t1, the current is zero. At t1 the current rises very quickly to a value IE1, in which a switching operation of the electromagnet with certainty not yet taking place. Then one follows in this For example, a linear ramp function or a gradual one Rise in current until time t2 when the current has the value IE2. Within this ramp between the At times t1 and t2 the Electromagnet. Then that will Semiconductor switch element that acts as an actuator for the current serves to a largely low-resistance value switched, which leads to the maximum current Iein in FIG. 1. In the example, when switching off, the current IA5 is at the beginning the falling ramp at time t5 is lower than at t2; in other embodiments, the current IA5 could be the same how or even be greater than the current IE2. From the time t6 to t7 is zero current.
Fig. 2 zeigt eine Anordnung 1 mit einem Magnetventil 3, das
einen Elektromagnet mit einer Magnetspule 4 enthält. Das
Magnetventil 3 liegt in einer Rohrleitung 7, in der sich ein
Fluid (im Beispiel ein Gas) befindet, das von einer
Fluidquelle 8, die im Beispiel mit einem elektrischen
Kompressor für Luft ausgestattet ist und Luft mit
unterschiedlichem Druck bereitstellen kann, durch die
Rohrleitung 7 unter Druck zu einem Behälter 9 gefördert
wird, wenn das Magnetventil 3 offen (durchlässig) ist und
der Behälter 9 befüllt werden soll. Wird der Druck der
Fluidquelle 8 auf einen kleineren Wert gebracht als im
Behälter 9, so wird bei offenem Magnetventil 3 der Behälter
9 entleert bzw. der Druck in ihm vermindert. An die
Rohrleitung 7 ist ein Drucksensor 11 angeschlossen, der
einerseits zur Sicherstellung des Betriebs der Anordnung und
für beliebige Überwachungsaufgaben dient, andererseits auch
dazu dient, den Schaltzeitpunkt des Magnetventils zu
erkennen.Fig. 2 shows an
Der Strom durch die Magnetspule 4 des Magnetventils 3 wird
durch eine Stromregelvorrichtung geregelt, die in Verbindung
mit einem steuerbaren Halbleiter-Schaltelement, nämlich im
Beispiel einem Transistor 17, eine Stromquelle bereitstellt.
Die Steuerelektrode (Basis) des Transistors 17 ist mit dem
Ausgang eines Operationsverstärkers 19 verbunden. Der
Transistor 17 ermöglicht eine Sperrung, eine niederohmige
Durchschaltung, oder eine kontinuierliche
Widerstandsänderung. Sein Kollektor ist über die in Serie
geschaltete Magnetspule 4 mit einer positiven
Versorgungsspannung UB verbunden.The current through the
Eine Temperaturerfassung 21 erfaßt die Versorgungsspannung
UB und den durch den Transistor 17 (im niederohmigen Zustand
= Sättigungszustand) fließenden Strom unter Berücksichtigung
des Spannungsabfalls an einem Widerstand R mit bekanntem
Wert, der in die Zuleitung zum Emitter des Transistors 17
geschaltet ist. Bei bekanntem Widerstand des Transistors 17
im Sättigungszustand (bzw. bei bekanntem Spannungsabfall am
Transistor) wird der Widerstand der Magnetspule 4 ermittelt,
und durch Vergleich mit einem zuvor bei einer bekannten
Temperatur gemessenen (und gespeicherten) Spulenwiderstand
wird auf die augenblickliche Temperatur der Magnetspule
geschlossen. Die Temperaturerfassung 21 leitet dann, wenn
die Spulentemperatur eine vorgegebene Grenztemperatur
überschreitet, Schutzmaßnahmen oder Gegenmaßnahmen ein. Im
Beispiel wird in einem solchen Fall die Ansteuerung des
Operationsverstärkers 19 über eine Einrichtung
Temperaturschutz 22 geändert, wodurch eine Änderung des
Stromverlaufs in der Magnetspule 4 bewirkt wird. Wenn ein
Mikrocontroller mit einem Analogeingang zur Verfügung steht,
so kann ohne merklichen Mehraufwand die Spulentemperatur,
wie geschildert, erfaßt werden.A
Der Drucksensor 11 liefert beim Erkennen einer
Druckänderung, die für den Beginn einer Zustandsänderung des
Magnetventils 3, genauer für den Beginn der Bewegung des
Ankers des Elektromagnets charakteristisch ist, ein Signal
an einen Block 23 "Adaption", der eine Steuereinrichtung
enthält, die mit einem elektronischen Speicher 25
zusammenwirkt. Der Block 23 liefert ein Signal an eine
Zustandsübergangssteuerung 27, durch die der Strom in der
Magnetspule 4 geregelt wird. Es ist außerdem noch die
Möglichkeit eingezeichnet, daß die Spannung UL an der
Magnetspule 4 abgegriffen wird und einem Block 29
"Anschlagserkennung" zugeführt wird, der mit dem Block 23
verbunden ist. Dabei wird neben dem Zeitpunkt einer
Spannungsänderung auch deren Amplitude erfaßt und daraus auf
die Endgeschwindigkeit des Ankers geschlossen.The
Die Zustandsübergangssteuerung 27 enthält einen Prozessor,
der entsprechend dem gewünschten zeitlichen Verlauf der
Strom-Zeit-Kurve ein Pulsweiten-moduliertes Signal
PWM-Signal) erzeugt, das durch Integration ein analoges
Signal ergibt, das dem Operationsverstärker 19 zugeführt
wird. Bei anderen Ausführungsbeispielen ist der Prozessor
mehreren Schaltungen gemäß Fig. 2 gemeinsam zugeordnet.
Insgesamt erfolgt die Steuerung so, daß der Schaltzeitpunkt
möglichst genau in der Mitte des allmählich ansteigenden
bzw. abfallenden Teils der Strom-Zeit-Kurve liegt, daß diese
genannten Teile unter Berücksichtigung der erforderlichen
Schaltgenauigkeit und der Störungsmöglichkeiten zeitlich
möglichst kurz sind, und daß bei auftretenden Störungen
während des Betriebs eine Regelung erfolgt, um die soeben
genannten Bedingungen möglichst schnell wieder zu erreichen
bzw. eine störende Abweichung zu verhindern.The
Es kann durchaus sinnvoll sein, zusätzlich zu der Erkennung des Schaltvorgangs mittels Drucksensor auch eine Erkennung des Beginns der Bewegung des beweglichen Teil des Elektromagnets durch die Erfassung der Spannung (oder des Stroms) vorzusehen, wie dargestellt.It can make sense in addition to detection detection of the switching process by means of a pressure sensor the beginning of the movement of the moving part of the Electromagnet by detecting the voltage (or the Stroms) to be provided, as shown.
Der Anstieg (und Abfall) des Stroms muß nicht in Form einer etwa linearen Rampe erfolgen, sondern es ist hier eine weitgehend beliebige Kurvenform (Übergangsfunktion) möglich. Diese muß nicht notwendigerweise monoton ansteigend bzw. abfallend verlaufen. Sie kann Krümmungen oder Knicke aufweisen. Erfindungsgemäß kann diese Übergangsfunktion oder auch die Rampe praktisch in dem Augenblick, in dem sich der Anker des Elektromagnets in Bewegung setzt (besonders bei steigendem Strom), was erfaßt wird, durch Steuerung einen kurzzeitig abfallenden Verlauf erhalten, damit der Anker möglichst wenig beschleunigt wird.The rise (and fall) of the electricity need not be in the form of a linear ramp, but there is one here largely any curve shape (transition function) possible. This does not necessarily have to increase monotonously or sloping. It can have bends or kinks exhibit. According to the invention, this transition function or also the ramp practically at the moment when the The armature of the electromagnet sets in motion (especially when increasing current), which is detected by control one receive a briefly descending course so that the anchor is accelerated as little as possible.
Oben wurde beschrieben, daß zum Feststellen, an welchem Punkt der Strom-Zeit-Kurve der Elektromagnet schaltet, der gesamte Strombereich in Form einer allmählich steigenden Kurve einmalig durchlaufen wird. Dies erfolgt in Fig. 1 vom Zeitpunkt t0 bis zum Zeitpunkt t3.It was described above that to determine which Point of the current-time curve the electromagnet switches that entire current range in the form of a gradually increasing Curve is run through once. This is done in Fig. 1 from Time t0 to time t3.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19860272 | 1998-12-24 | ||
DE19860272A DE19860272B4 (en) | 1998-12-24 | 1998-12-24 | Method and device for reducing noise in electromagnetically actuated devices |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1014395A2 true EP1014395A2 (en) | 2000-06-28 |
EP1014395A3 EP1014395A3 (en) | 2001-11-14 |
EP1014395B1 EP1014395B1 (en) | 2006-04-12 |
Family
ID=7892813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99123805A Expired - Lifetime EP1014395B1 (en) | 1998-12-24 | 1999-12-01 | Method and apparatus for reducing the noise of electromagnetically operated devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US6560088B1 (en) |
EP (1) | EP1014395B1 (en) |
DE (2) | DE19860272B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007141294A1 (en) * | 2006-06-06 | 2007-12-13 | Continental Teves Ag & Co. Ohg | Method for activating hydraulic inlet valves which are activated in an analog fashion |
WO2012052206A1 (en) * | 2010-10-18 | 2012-04-26 | Robert Bosch Gmbh | Method for automatically braking a vehicle, and control unit in which the method is carried out |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10005424A1 (en) * | 2000-02-08 | 2001-08-09 | Bosch Gmbh Robert | Control circuit for fitting to a controllable electro-magnetic valve for a motor vehicle braking installation feeds actual control range values like deceleration, wheel slippage or vehicle speed back into preset tolerance band |
DE10124847A1 (en) * | 2001-05-22 | 2002-11-28 | Abb Patent Gmbh | Operating actuator drive e.g. for pipeline, involves maximum actuation speed during first phase, and reducing actuation speed continuously with defined gradient from predefined position in second phase |
DE10130335C1 (en) * | 2001-06-26 | 2003-02-13 | Zf Lemfoerder Metallwaren Ag | Locking and unlocking mechanism with electromagnet |
EP1430207B1 (en) * | 2001-08-16 | 2008-02-20 | Robert Bosch Gmbh | Method and device for controlling an electromagnetic consumer |
DE10140432B4 (en) * | 2001-08-17 | 2010-02-11 | GM Global Technology Operations, Inc., Detroit | Method and device for noise and vibration reduction on a solenoid valve |
WO2005051740A1 (en) * | 2003-11-26 | 2005-06-09 | Robert Bosch Gmbh | Method for controlling a two-stage selector valve |
US6889121B1 (en) * | 2004-03-05 | 2005-05-03 | Woodward Governor Company | Method to adaptively control and derive the control voltage of solenoid operated valves based on the valve closure point |
DE102004019152B4 (en) * | 2004-04-21 | 2007-05-31 | Robert Bosch Gmbh | Method for operating a solenoid valve for quantity control |
DE102005060414A1 (en) * | 2005-12-15 | 2007-06-21 | Bosch Rexroth Ag | Electro hydraulic control device e.g. for control devices, has valve with control electronics for electrical control of valve as function of control signal |
US20070230665A1 (en) * | 2006-03-31 | 2007-10-04 | General Electric Company | Noise reduction in brakes & clutches |
US7950622B2 (en) * | 2007-07-25 | 2011-05-31 | Honeywell International, Inc. | System, apparatus and method for controlling valves |
US8360394B2 (en) * | 2008-07-30 | 2013-01-29 | GM Global Technology Operations LLC | Control system and method for transitioning between position control and force control for multi-stage turbo engine turbine bypass valve |
US8149558B2 (en) * | 2009-03-06 | 2012-04-03 | Cobasys, Llc | Contactor engagement system and method |
US9435459B2 (en) * | 2009-06-05 | 2016-09-06 | Baxter International Inc. | Solenoid pinch valve apparatus and method for medical fluid applications having reduced noise production |
DE102010022536A1 (en) * | 2010-06-02 | 2011-12-08 | Continental Automotive Gmbh | Method and device for controlling a valve |
DE102012206419B4 (en) * | 2012-04-19 | 2021-08-12 | Magna Pt B.V. & Co. Kg | Control for a pressure regulating valve |
JP6266933B2 (en) * | 2013-09-25 | 2018-01-24 | 本田技研工業株式会社 | Braking device valve system |
DE102014220929B4 (en) * | 2014-10-15 | 2022-05-25 | Vitesco Technologies GmbH | Method for controlling an inductive actuator |
BR112017019909A2 (en) | 2015-03-20 | 2018-06-19 | Dana Automotive Systems Group | method for detecting the position of an armature in a solenoid and system for determining it |
DE102015219197B4 (en) | 2015-10-05 | 2019-07-04 | Conti Temic Microelectronic Gmbh | Pneumatic solenoid valve |
DE102015219176B3 (en) | 2015-10-05 | 2017-03-30 | Conti Temic Microelectronic Gmbh | Pneumatic solenoid valve |
DE102015219182B4 (en) | 2015-10-05 | 2019-07-04 | Conti Temic Microelectronic Gmbh | Pneumatic solenoid valve |
DE102016103249A1 (en) * | 2016-02-24 | 2017-08-24 | Truma Gerätetechnik GmbH & Co. KG | Gas valve and method for its control |
US10766557B2 (en) * | 2016-03-30 | 2020-09-08 | Honda Motor Co., Ltd. | Screen control device |
DE102017102637A1 (en) * | 2017-02-10 | 2018-08-16 | Pilz Gmbh & Co. Kg | Circuit arrangement for operating at least one relay |
DE102017207685A1 (en) * | 2017-05-08 | 2018-11-08 | Robert Bosch Gmbh | Method for controlling at least one solenoid valve |
DE102018202392A1 (en) * | 2018-02-16 | 2019-08-22 | Audi Ag | Method for laminating a noise of a motor vehicle and motor vehicle |
CN112585711A (en) * | 2018-08-15 | 2021-03-30 | 蒂科能源解决方案股份有限公司 | System and method for fast and low noise relay switch operation |
DE102018213998B4 (en) * | 2018-08-20 | 2020-12-10 | Continental Teves Ag & Co. Ohg | Method for controlling an electromagnetic valve and compressed air system with an electromagnetic valve |
CN113576563B (en) * | 2021-09-02 | 2022-10-04 | 深圳市理康医疗器械有限责任公司 | Electromagnetic ballistic impulse wave generator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1251165A (en) * | 1970-06-30 | 1971-10-27 | ||
US4641219A (en) * | 1983-07-12 | 1987-02-03 | Sharp Kabushiki Kaisha | Low noise solenoid drive |
DE19544207A1 (en) * | 1995-11-28 | 1997-06-05 | Univ Dresden Tech | Model-based measurement and control of electromagnetic actuator movements |
US5645097A (en) * | 1993-02-23 | 1997-07-08 | Robert Bosch Gmbh | Control circuit for a solenoid valve |
EP0662697B1 (en) * | 1994-01-07 | 1998-04-08 | Automobiles Peugeot | Method for controlling a bistable electromagnetic actuator and device to carry out such method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3843138A1 (en) * | 1988-12-22 | 1990-06-28 | Bosch Gmbh Robert | METHOD OF CONTROLLING AND DETECTING THE MOVEMENT OF AN ARMATURE OF AN ELECTROMAGNETIC SWITCHING DEVICE |
US5053911A (en) * | 1989-06-02 | 1991-10-01 | Motorola, Inc. | Solenoid closure detection |
DE4013393A1 (en) * | 1990-04-26 | 1991-10-31 | Lucas Ind Plc | Electromagnetic valve function monitoring method - measuring coil voltage and/or current fluctuations after applying actuating current |
DE4317109A1 (en) | 1993-05-21 | 1994-11-24 | Herion Werke Kg | Method for checking solenoid valves and associated measuring arrangement |
US5381297A (en) * | 1993-06-18 | 1995-01-10 | Siemens Automotive L.P. | System and method for operating high speed solenoid actuated devices |
GB9420617D0 (en) * | 1994-10-13 | 1994-11-30 | Lucas Ind Plc | Drive circuit |
DE19611885B4 (en) * | 1996-03-26 | 2007-04-12 | Robert Bosch Gmbh | Method and device for controlling an electromagnetic switching element |
DE19714518A1 (en) * | 1997-04-08 | 1998-10-15 | Bayerische Motoren Werke Ag | Current control method for an electromagnetically operated lift valve of an internal combustion engine |
DE19742038A1 (en) * | 1997-09-24 | 1999-03-25 | Wabco Gmbh | Solenoid valve state detection method |
US6031707A (en) * | 1998-02-23 | 2000-02-29 | Cummins Engine Company, Inc. | Method and apparatus for control of current rise time during multiple fuel injection events |
-
1998
- 1998-12-24 DE DE19860272A patent/DE19860272B4/en not_active Expired - Lifetime
-
1999
- 1999-12-01 DE DE59913326T patent/DE59913326D1/en not_active Expired - Lifetime
- 1999-12-01 EP EP99123805A patent/EP1014395B1/en not_active Expired - Lifetime
- 1999-12-24 US US09/472,707 patent/US6560088B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1251165A (en) * | 1970-06-30 | 1971-10-27 | ||
US4641219A (en) * | 1983-07-12 | 1987-02-03 | Sharp Kabushiki Kaisha | Low noise solenoid drive |
US5645097A (en) * | 1993-02-23 | 1997-07-08 | Robert Bosch Gmbh | Control circuit for a solenoid valve |
EP0662697B1 (en) * | 1994-01-07 | 1998-04-08 | Automobiles Peugeot | Method for controlling a bistable electromagnetic actuator and device to carry out such method |
DE19544207A1 (en) * | 1995-11-28 | 1997-06-05 | Univ Dresden Tech | Model-based measurement and control of electromagnetic actuator movements |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007141294A1 (en) * | 2006-06-06 | 2007-12-13 | Continental Teves Ag & Co. Ohg | Method for activating hydraulic inlet valves which are activated in an analog fashion |
WO2012052206A1 (en) * | 2010-10-18 | 2012-04-26 | Robert Bosch Gmbh | Method for automatically braking a vehicle, and control unit in which the method is carried out |
CN103153731A (en) * | 2010-10-18 | 2013-06-12 | 罗伯特·博世有限公司 | Method for automatically braking vehicle, and control unit in which the method is carried out |
US9043109B2 (en) | 2010-10-18 | 2015-05-26 | Robert Bosch Gmbh | Method for automatically braking a vehicle, and control unit in which the method is executed |
CN103153731B (en) * | 2010-10-18 | 2015-07-15 | 罗伯特·博世有限公司 | Method for automatically braking vehicle, and control unit operating the method |
Also Published As
Publication number | Publication date |
---|---|
DE59913326D1 (en) | 2006-05-24 |
US6560088B1 (en) | 2003-05-06 |
DE19860272A1 (en) | 2000-07-06 |
EP1014395A3 (en) | 2001-11-14 |
EP1014395B1 (en) | 2006-04-12 |
DE19860272B4 (en) | 2005-03-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1014395B1 (en) | Method and apparatus for reducing the noise of electromagnetically operated devices | |
EP0449852B1 (en) | Process and device for controlling and detecting the movement of an armature of an electromagnetic switching device | |
DE2811345C2 (en) | Pressure regulators for pneumatic pressures, in particular in vehicles | |
DE19533452B4 (en) | Method for adapting a control for an electromagnetic actuator | |
EP0203354B1 (en) | Process and circuit for the control of a valve | |
DE3817770C2 (en) | ||
EP0980575A1 (en) | Electronic control circuit | |
DE4013393C2 (en) | ||
DE102014203364B4 (en) | Method and device for operating a valve, in particular for an accumulator injection system | |
DE60101770T2 (en) | ELECTRICALLY ACTUATED MOTOR VALVE WITH OUTPUT OF A POSITION SIGNAL | |
DE4406250A1 (en) | Electronic status display for electromagnetic contactor | |
DE2805876C2 (en) | ||
EP1050891B1 (en) | A method for controlling the landing velocity of an armature of an electromagnetic actuator by controlling the current with a look-up table | |
DE19742038A1 (en) | Solenoid valve state detection method | |
DE19742037B4 (en) | Method for detecting the waste of a magnetically operated device | |
DE112010004891T5 (en) | Systems and methods for detecting electromagnetic armature movement | |
DE102007063479A1 (en) | Method for producing signal, involves displaying armature of electromagnets, which attain end position and current is measured continuously which is flowing by electromagnets | |
EP1165944B1 (en) | Method of determining the position of an armature | |
EP0225444A1 (en) | Process for the control of an electromagnet | |
EP3877683A1 (en) | Solenoid valve, control electronics for a solenoid valve, and method for controlling a solenoid valve | |
DE10315282B4 (en) | Circuit arrangement and method for driving a bistable solenoid valve | |
DE19641244A1 (en) | Adjusting electromagnetic actuator e.g. for IC engine gas-exchange valves | |
DE202008005238U1 (en) | Vacuum valve system with position detection | |
WO2008090047A1 (en) | Device and method for controlling an electromagnetic valve | |
DE69608348T2 (en) | Control circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Kind code of ref document: A2 Designated state(s): DE ES FR GB IT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20011201 |
|
17Q | First examination report despatched |
Effective date: 20020207 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTI TEMIC MICROELECTRONIC GMBH |
|
AKX | Designation fees paid |
Free format text: DE ES FR GB IT SE |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20060412 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 59913326 Country of ref document: DE Date of ref document: 20060524 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060712 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060723 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20060412 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20070115 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20181219 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20181231 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59913326 Country of ref document: DE |