EP1819566A1 - Appareil de regulation a commande electromagnetique et procede pour le realiser et/ou le regler - Google Patents

Appareil de regulation a commande electromagnetique et procede pour le realiser et/ou le regler

Info

Publication number
EP1819566A1
EP1819566A1 EP05813527A EP05813527A EP1819566A1 EP 1819566 A1 EP1819566 A1 EP 1819566A1 EP 05813527 A EP05813527 A EP 05813527A EP 05813527 A EP05813527 A EP 05813527A EP 1819566 A1 EP1819566 A1 EP 1819566A1
Authority
EP
European Patent Office
Prior art keywords
valve
actuator
closing
spacer
opening
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.)
Withdrawn
Application number
EP05813527A
Other languages
German (de)
English (en)
Inventor
Joachim Bohn
Holger Kollmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1819566A1 publication Critical patent/EP1819566A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3655—Continuously controlled electromagnetic valves
    • B60T8/366—Valve details
    • B60T8/367—Seat valves, e.g. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • 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
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a control device according to the preamble of claim 8.
  • the generic control device is in particular an analogized digital control valve (A / D valve) in a brake control system for motor vehicles with at least ABS functionality.
  • ABS control units for motor vehicle brake systems, but also in so-called vehicle dynamics controllers with additional functions such as ESP, etc., to use electromagnetically controllable analogized valves for improved control or noise reduction.
  • An analogized switching valve is a, usually via a PWM current control, driven solenoid valve, which is designed for complete opening or closing, but je ⁇ is operated by targeted current setting so that this has analog control properties.
  • the pressure gradient or flow G of a corresponding analogized switching valve can be adjusted as a function of the differential pressure by varying the current through the magnetic coil of the valve.
  • the adjustment of the volume flow Q in the area of the control must be carried out very precisely.
  • the main influencing variables are the differential pressure ⁇ p, the current I through the Solenoid of the valve and a whole set of mechanically predetermined, usually tainted with valve parameters.
  • the invention preferably relates to a method with which a particularly suitable air gap is set.
  • the characteristic (force / displacement characteristic) of the restoring element can be adjusted with a spacing element inserted into the actuating device so that a specific air gap region is maintained at the operating point of the valve.
  • this has proven to be more advantageous by displacing the valve seat.
  • At least one electromagnetic property of the actuator is measured and the measured electromagnetic property itself or a quantity derived therefrom is used as a guide for determining the insertion depth 1 of the spacer element relative to the armature bearing surface 17 (FIG. 2) used in the direction of movement of the return element.
  • the spring preload of the restoring element can be adjusted to a defined value at the operating point.
  • the term actuators means valves and valves for adjusting a fluid flow. Particularly preferably, the actuators used are valves.
  • a fluid in addition to air and a suitable hydraulic fluid into consideration, which is in particular a commercial brake fluid when using a brake.
  • the actuating device comprises an electromechanical arrangement and a valve actuating device with a closing element.
  • a closing element is preferably provided which is mechanically connected to an armature or is in operative connection therewith.
  • the closing element is preferably a plunger.
  • the closure element is moved back by a return element when no current flows through the exciter coil.
  • the restoring element is preferably a return spring.
  • the actuator preferably has a completely open and a completely closed position.
  • the actuator takes one of these positio NEN, caused by a return element.
  • a suitable reset element may preferably be a spring which has a largely predefined force / displacement characteristic.
  • the method according to the invention is preferably used for the manufacture of valves for an electrohydraulic brake control device for motor vehicles, such as an ABS / ESP brake control device.
  • the measured electromagnetic property used for the adjustment is preferably one or more properties of the actuator from the group:
  • Inductance L of the electromechanical arrangement the force acting on the valve actuator electrically measured magnetic force F magn or da ⁇ associated with magnetic flux, required for opening or closing holding current Ihait or required for opening or closing opening current I o ff ,
  • an adjustment of the Feder ⁇ bias can also be carried out in particular by determining the distance 1 or the insertion depth of the spring stop. Instead of measuring the insertion depth, a measurement of the spring force, for example via a force sensor, is particularly expedient.
  • the opening current, the holding current, the magnetic resistance or the inductance is preferably set by a regulator. This can be done, for example, with fully closed actuator or in defined controlled states of the actuator.
  • the spring preload in the mechanical arrangement is reduced by shifting the spacing element until the magnetic flux corresponds to a desired value.
  • a further object of the invention is to obtain the lowest possible scattering or a uniform behavior in the electrical characteristic curves in relation to the set pressure value during a production process. Vorzugswei ⁇ se this is a characteristic that determines the relationship between opening current and differential pressure. Therefore, according to a further preferred embodiment of the method, the adjusting device is exposed during production or adjustment to a precisely defined predetermined differential pressure and / or a precisely defined predetermined flow.
  • the total magnetic resistance R m of the magnetic circuit in the electromagnetic arrangement is measured.
  • the inductance L of the corresponding magnetic circuit with reference to the number of turns N of the coil, as an equivalent physical variable, is correspondingly used for carrying out the invention.
  • the method according to the invention can be used.
  • At least one additional measuring element in particular at least one measuring coil, is preferably provided with which the inductance, the magnetic flux or the magnetic resistance can be measured.
  • a measuring element in addition to a coil, it is also possible, in principle, to use other known magnetic field-dependent sensors, such as Hall sensors, MR sensors, etc., if they are suitable for detecting the effective magnetic flux.
  • the use of a coil appears particularly modal ⁇ moderately due to the possibility of cost-effective production.
  • the measuring coil described above can be electrically independent of the drive coil. However, according to a preferred embodiment it is possible to switch the measuring coil electrically in series with the driving coil. This has the advantage that only three control lines are required.
  • the flow G of the actuating device or valve is determined in prin ⁇ zip next to the differential pressure and the geometric Strö ⁇ mungseigenschaften by the force acting on the plunger of the relevant actuator (ram force).
  • the magnetic force F magn which is caused by the fluid (eg pneumatic or hydraulic) pressure-dependent force F hyd and the force F Fe exerted by the return element , acts on the tappet of the valve. In equilibrium of force (tappet stands still) These jointly acting forces cancel each other out. In this state, in the case of a magnetic force generated via an excitation coil, the so-called holding current I ha i t -
  • fertilization consists in that preferably a measurement of the magnetic flux is carried out and, in particular, also regulated according to this. This is useful because the magnetic force, which corresponds to the spring force in equilibrium, is directly dependent on the magnetic flux.
  • the spacer element a little magnetizable metal, such as in particular an austenitic steel, wherein the said material may in principle also be useful for the production of other parts of the actuating device.
  • a little magnetizable metal such as in particular an austenitic steel
  • Fig. 1 shows an analog valve according to the described earlier PCT patent application in cross section
  • Fig. 2 shows an analog valve according to the invention in cross-section.
  • FIG. 1 shows a solenoid valve 10 for an electrohydraulic brake system in a motor vehicle with ABS / ESP functionality.
  • Armature 6, housing 7, sleeve 8 and coil 13 are components of the electromagnetic arrangement, which acts mechanically on the actual valve. More precisely, armature 6 is moved by the magnetic field of valve spool 13, whereby it acts mechanically on plunger 5. Plunger 5 closes off the opening in valve seat 3.
  • return spring 9 this spring is not shown in the figures throughout
  • the remaining space between armature and housing is referred to as the residual air gap d.
  • a stop 12 for spring 9 which is materially united with housing 7.
  • 14 arranged in the housing check valve.
  • the in ⁇ nergur of check valve 14 arranged ball 15 is held by ring 16 in the intended position.
  • non-inventive solenoid valve in Fig. 1 can be mechanically adjusted in a production facility already with respect to a uniform opening flow behavior by displacement of the valve seat 3. In this case, for example, with an automaton a consideration of the magnetic rule resistance in the closed valve position or the opening current made.
  • Fig. 2 shows a solenoid valve 10, wherein the valve seat facing the stop 11 of the return spring 9 is moved with a Ab ⁇ spacers 1 in the direction of the armature for adjusting the spring force (spring 9 is not drawn throughout the figures because of the simpler graphic representation
  • a predetermined area for the air gap d can also be advantageously maintained with the same magnetic flux during series production of the valves.
  • a mounting device is axially moved into the housing during assembly by means of a production machine instead of the check valve plate 4, which constitutes a stop for the valve pin in the axial direction and at the same time includes the possibility of displacement of the stop sleeve 4 .
  • the preassembled assembly anchor / plunger is inserted into the housing, the residual air gap is adjusted and caulked.
  • the valve is switched.
  • the current signal e- lektrisch evaluated and formed from a size, which is used as a measure of the insertion of the stop sleeve.
  • the current evaluation is carried out either by integrating the induced voltage or, more particularly, by measuring the coil current after switching off the current control.
  • the adjustment method described can be carried out several times in succession for a particularly high accuracy in principle.
  • the method described above can be carried out in particular also with additional Druckbe ⁇ aufschlagung the valve, resulting in advantages in the signal quality.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

La présente invention concerne un procédé pour réaliser et/ou régler un appareil de régulation à commande électromagnétique qui convient pour réguler le débit d'un liquide, en particulier pour régler une soupape analogique hydraulique ou pneumatique ou une soupape de commutation analogisée (10). Selon le procédé, les propriétés de la soupape sont réglées par insertion d'un élément d'espacement (1). L'élément d'espacement (1) permet au moins le déplacement d'une butée de l'élément de rappel dans une direction axiale correspondant au mouvement d'induit. L'invention présente l'avantage qu'une propriété électromagnétique de l'appareil de régulation est mesurée, et la propriété mesurée elle-même ou une grandeur dérivée de celle-ci, est utilisée comment valeur réelle pour un réglage d'une grandeur de réglage. Le grandeur de réglage est utilisée directement pour la réalisation ou le réglage de l'appareil de régulation. L'invention a également pour objet un appareil de régulation tel que décrit précédemment, qui permet la mise en oeuvre du procédé.
EP05813527A 2004-11-26 2005-11-28 Appareil de regulation a commande electromagnetique et procede pour le realiser et/ou le regler Withdrawn EP1819566A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004057134 2004-11-26
PCT/EP2005/056268 WO2006056611A1 (fr) 2004-11-26 2005-11-28 Appareil de regulation a commande electromagnetique et procede pour le realiser et/ou le regler
DE200510056776 DE102005056776A1 (de) 2004-11-26 2005-11-28 Elektromagnetisch ansteuerbares Stellgerät und Verfahren zu dessen Herstellung und/oder Justage

Publications (1)

Publication Number Publication Date
EP1819566A1 true EP1819566A1 (fr) 2007-08-22

Family

ID=35539287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05813527A Withdrawn EP1819566A1 (fr) 2004-11-26 2005-11-28 Appareil de regulation a commande electromagnetique et procede pour le realiser et/ou le regler

Country Status (6)

Country Link
US (1) US20080210896A1 (fr)
EP (1) EP1819566A1 (fr)
JP (1) JP2008522107A (fr)
KR (1) KR20070084562A (fr)
DE (1) DE102005056776A1 (fr)
WO (1) WO2006056611A1 (fr)

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DE102008015147A1 (de) 2007-11-28 2009-06-04 Continental Teves Ag & Co. Ohg Elektromagnetventil

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Also Published As

Publication number Publication date
JP2008522107A (ja) 2008-06-26
WO2006056611A1 (fr) 2006-06-01
KR20070084562A (ko) 2007-08-24
US20080210896A1 (en) 2008-09-04
DE102005056776A1 (de) 2006-06-08

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