EP1005051A2 - Procédé et dispositif de commande d'un consommateur electromagnetique - Google Patents

Procédé et dispositif de commande d'un consommateur electromagnetique Download PDF

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Publication number
EP1005051A2
EP1005051A2 EP99114827A EP99114827A EP1005051A2 EP 1005051 A2 EP1005051 A2 EP 1005051A2 EP 99114827 A EP99114827 A EP 99114827A EP 99114827 A EP99114827 A EP 99114827A EP 1005051 A2 EP1005051 A2 EP 1005051A2
Authority
EP
European Patent Office
Prior art keywords
time window
time
current
consumer
window
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
Application number
EP99114827A
Other languages
German (de)
English (en)
Other versions
EP1005051A3 (fr
EP1005051B1 (fr
Inventor
Klaus Zimmermann
Michael Straehle
Tobias Lang
Bernd Wichert
Klaus Sassen
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1005051A2 publication Critical patent/EP1005051A2/fr
Publication of EP1005051A3 publication Critical patent/EP1005051A3/fr
Application granted granted Critical
Publication of EP1005051B1 publication Critical patent/EP1005051B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator

Definitions

  • the invention relates to a method and a device to control an electromagnetic consumer according to the preambles of the independent claims.
  • a method and a device for controlling a electromagnetic consumers are from DE-OS 44 20 282 known.
  • a device for Controlling a consumer described the comprises movable element. It is with the consumer a solenoid valve to control the Fuel metering in an internal combustion engine.
  • a switching time is recognized when which the movable element reaches a certain position. This is done by evaluating the time course a size that is the current flowing through the consumer flows, corresponds.
  • the voltage, to the consumer to a constant value is regulated or controlled.
  • the invention is based, with one Method and a device for controlling a electromagnetic consumer of the type mentioned the duration of the time window within which the Switching time is detected to specify appropriately.
  • the Time window should be large enough for the Switching time can be detected.
  • that's supposed to Time window should be so small that it doesn't become one Current increase to impermissible values and thus to one The power stage is switched off.
  • the time window within which the switching time is recorded is specified in such a way that on the one hand a detection of the switching time is possible and on the other hand the current is not too high Values increases.
  • FIG. 1 shows a schematic illustration of the final stage
  • FIG. 2 various signals plotted over time
  • FIG. 3 a flowchart to illustrate the invention Method.
  • the invention is illustrated below using the example of a Described by the consumer. It is with the consumer is in particular a solenoid valve for controlling the Fuel metering in an internal combustion engine.
  • the Consumer includes a movable element that is at a Solenoid valve is usually referred to as a valve needle.
  • the device according to the invention is based a block diagram.
  • a consumer is 100 with a first connection with a supply voltage Ubat connected, the second port of consumer 100 stands with the first connection of a switching means 110 in Connection.
  • the second connection of the switching means 110 is with the first connection of a current measuring means 120 in Connection.
  • the second connection of the current measuring means is in contact with ground.
  • the connections of the consumer 100 and the connections of the Current measuring means 120 act on a control unit 130 with signals, which in turn the switching means 110 with a Control signal A is applied.
  • the consumer is 100, the switching means 110 and the current measuring means 120 in connected in series in this order. That order is chosen only as an example.
  • the three elements can too be arranged in a different order. So it can Switching means also between the supply voltage and the Be arranged consumers.
  • it can Current measuring means 120 between the switching means 110 and the Consumer 100 or between the consumer 100 and the Supply voltage can be arranged. Furthermore, it is possible that further switching means, especially a between the consumer 100 and the supply voltage, are provided.
  • the switching means 110 is preferably a transistor, realized in particular as a field effect transistor.
  • the Current measuring means 120 is preferably an ohmic resistor educated.
  • the consumer 100 is preferably around the coil of a solenoid valve that for Metering of fuel is used.
  • sub-figure 2a is the current I through the Consumer 100 flows, and preferably through that Current measuring means 120 is detected, plotted over time.
  • FIG. 2a shows a metering or a Injection process shown. The starts at time t1 Control of consumer 100.
  • the current I rises steeply.
  • a first value S1 is reached. To this The switching means opens at this point in time. If the current drops by one determined value, the switching means 110 and the current rises again to the value S1.
  • the value S1 is also referred to as starting current.
  • the period between time t1 and time t2 is known as a free power-up. On this the regulation follows the starting current.
  • a time window begins within which Switching means 110 are constantly in its closed Condition. As a result, the current increases.
  • the moveable one Element its new end position due to the magnetic force. This has a change in the inductance of the consumer Episode. This causes a change in the current rise.
  • the Time t4 ends the time window.
  • a second value S2 for the Electricity regulated is also called the holding current designated.
  • the control of the consumer ends at Time t5 at which the switching means 110 is opened and the current drops to 0 by time t6.
  • the current flow is only shown schematically and can other types of solenoid valves or others Control procedures also accept other courses.
  • the behavior while reaching the new one End position at time tBIP can be different. It is essential that at the switching time tBIP Current flow a kink and / or a discontinuity having. Usually this kink is caused by a Current evaluation recognized.
  • the times t3 and t4 define a time window within which the switching time is recorded. It is provided that the switching means within the time window 110 is in its closed state. By Evaluation of the current curve within the time window the switching time tBIP is recognized. During the Time window defined by the times t3 and t4 is, the consumer 100 with the supply voltage Ubat charged and the temporal course of the current to Determination of the switching time evaluated. The fact that the Consumers in the time window with supply voltage is applied, the control is simplified in Time window essential, voltage regulation is not required.
  • the limits for the time window t3 and t4 are preferably specified based on the switching time tBIP of the previous activation and the width B of the time window.
  • the width B of the time window becomes, as in FIG. 3 described, specified.
  • the time window i.e. the time interval between times t3 and t4 the current rise during the time window is limited. This takes place in particular when the internal combustion engine is started.
  • sub-figure 2b is the time course of the duration of the Time window plotted with a solid line.
  • the maximum value IB of the current I, which is just before the time t4 is detected is with a dashed line applied.
  • the threshold value SW is one Double line applied. It is the conditions in the normal undisturbed operation.
  • a minimum value BMIN for the duration of the time window i.e. specified at a distance between t3 and t4.
  • the maximum value IB of the current is clearly below the threshold value SW. This has the consequence that the next injection a larger value is specified for the time window. This means the duration B of the time window increases over time several levels until a maximum value BMAX is reached.
  • the value BMIN is chosen so that even with unfavorable ones Conditions the maximum current IB is not greater than that Threshold value is SW.
  • the maximum value IB of the current also increases.
  • the maximum but does not reach the threshold value SW.
  • the threshold value SW is chosen so that it is slightly smaller than the maximum permissible current value at which the current monitoring appeals.
  • FIG. 2b also shows that the threshold value SW is not constant, but depends on the Battery voltage Ubat, which is applied by the consumer is specified. As can be seen in FIG. 2b, this value increases slowly during the starting process.
  • the procedure according to the invention is shown in FIG a flow chart explained.
  • the Procedure according to the invention only once after the start performed the internal combustion engine. This means after at the start of the internal combustion engine, the program begins in Step 300.
  • the value B for the Time window set to the minimum value BMIN.
  • Which Subsequent query 320 checks whether the maximum value of the Current IB is greater than the threshold value SW. Is this not the case, i.e. is the maximum value IB of the current less than the threshold value SW, so in step 330 Time window B increased by the value X.
  • the maximum value IB of the current corresponds to the current value that is present at time t4. Cannot measure this or difficult to detect, a current value can also be immediately before time t4 as the maximum value IB be used.
  • the maximum value IB of the current corresponds the largest current value measured in the time window.
  • the maximum value IB of the current I is preferred recorded immediately before the end of the time window (t4).
  • the subsequent query 340 checks whether the width B of the time window is greater than the maximum value BMAX. Is if this is the case, the program ends in step 350.
  • query 320 occurs again In normal operation, program steps 320, 330 and Go through 340 several times until the width B of the time window has reached the maximum value BMAX. If this ends the procedure.
  • Query 320 recognizes that the maximum value IB of the current is greater than the threshold value SW, then in step 360 the width B of the window is reduced by the value Y.
  • the subsequent query 370 checks whether the width B is less than or equal to the minimum value BMIN. Is this If this is not the case, query 320 is repeated. If this is the case the case, the width B is set to the step 380 Minimum value BMIN is set, and query 320 takes place again.
  • the width of the window B is around decreases the value Y until the maximum value IB of the current is less than the threshold.
  • the lower value did not fall below the BMIN becomes.
  • the duration of the time window increases when the current is less than the threshold.
  • the duration of the Time window is increased until a maximum value (BMAX) is reached for the duration.
  • the duration of the Time window is reduced if the current is greater than is the threshold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electromagnets (AREA)
EP99114827A 1998-11-25 1999-07-29 Procédé de commande d'un consommateur électromagnétique Expired - Lifetime EP1005051B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19854305A DE19854305A1 (de) 1998-11-25 1998-11-25 Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE19854305 1998-11-25

Publications (3)

Publication Number Publication Date
EP1005051A2 true EP1005051A2 (fr) 2000-05-31
EP1005051A3 EP1005051A3 (fr) 2002-03-20
EP1005051B1 EP1005051B1 (fr) 2007-03-07

Family

ID=7888919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114827A Expired - Lifetime EP1005051B1 (fr) 1998-11-25 1999-07-29 Procédé de commande d'un consommateur électromagnétique

Country Status (5)

Country Link
US (1) US20010048087A1 (fr)
EP (1) EP1005051B1 (fr)
JP (1) JP2000164425A (fr)
DE (2) DE19854305A1 (fr)
ES (1) ES2281153T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012123445A1 (fr) * 2011-03-17 2012-09-20 Continental Automotive Gmbh Commande électrique modifiée d'un actionneur pour déterminer le moment d'une arrivée en butée de l'armature

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033151A1 (de) * 2005-07-13 2007-01-18 Robert Bosch Gmbh Vorrichtung zur Ansteuerung einer elektromagnetischen Aktuatorik und Verfahren zum Testen einer ersten Induktivität einer elektromagnetischen Aktuatorik
DE102006044080B4 (de) 2006-09-20 2023-10-12 Robert Bosch Gmbh Verfahren zum Betreiben eines Reagenzmittel-Dosierventils und Vorrichtung zur Durchführung des Verfahrens
JP5233967B2 (ja) * 2009-11-20 2013-07-10 オムロンヘルスケア株式会社 血圧測定装置
CN101806255B (zh) * 2010-03-19 2013-01-02 清华大学 一种柴油机电磁阀驱动方法及其驱动系统
DE102011004309A1 (de) 2011-02-17 2012-08-23 Robert Bosch Gmbh Verfahren und Steuergerät zur Bestimmung eines Schaltzeitpunkts eines Magnetventils
CN109058574B (zh) * 2018-08-30 2020-10-27 宁波奕力电磁技术有限公司 具有位置状态监测的低功耗电磁阀的控制方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8703213A1 (es) * 1985-04-25 1987-02-16 Kloeckner Wolfgang Dr Procedimiento para el accionamiento de una maquina motriz de combustion interna
DE4420282A1 (de) * 1994-06-10 1995-12-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012123445A1 (fr) * 2011-03-17 2012-09-20 Continental Automotive Gmbh Commande électrique modifiée d'un actionneur pour déterminer le moment d'une arrivée en butée de l'armature

Also Published As

Publication number Publication date
ES2281153T3 (es) 2007-09-16
EP1005051A3 (fr) 2002-03-20
DE59914240D1 (de) 2007-04-19
DE19854305A1 (de) 2000-05-31
US20010048087A1 (en) 2001-12-06
JP2000164425A (ja) 2000-06-16
EP1005051B1 (fr) 2007-03-07

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