EP0916828A2 - Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers - Google Patents
Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers Download PDFInfo
- Publication number
- EP0916828A2 EP0916828A2 EP98113661A EP98113661A EP0916828A2 EP 0916828 A2 EP0916828 A2 EP 0916828A2 EP 98113661 A EP98113661 A EP 98113661A EP 98113661 A EP98113661 A EP 98113661A EP 0916828 A2 EP0916828 A2 EP 0916828A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- consumer
- current
- setpoint
- time window
- voltage
- 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
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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
-
- 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
- F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
-
- 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
- F02D2041/2031—Control of the current by means of delays or monostable multivibrators
-
- 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
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
-
- 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
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
Definitions
- the invention relates to a method and a device to control an electromagnetic consumer the preambles of the independent claims.
- a method and a device for controlling a electromagnetic consumer are from the 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 at which the movable element changes its position. This is done by the evaluation of the time course of a variable that the Current that flows through the consumer corresponds. While of the time window in which the current is evaluated the voltage applied to the consumer to one constant value regulated or controlled.
- the supply lines to the consumer are in the cold start phase low impedance so that the currents enter at constant voltage reach a higher level than in normal operation. Is a Current monitoring provided that from a certain Threshold of the current switches off the output stage, this can cause the power amplifier from the current monitor is switched off.
- the invention is based, with one Method and a device for controlling a electromagnetic consumer of the type mentioned a suitable one during the switching time detection Specify voltage value at which none Safety shutdown of the output stage takes place and in which the Valve remains securely in position.
- FIG. 1 shows a schematic representation of the final stage and Figure 2 a Flow chart to illustrate the invention Method.
- the invention is illustrated below using the example of a Described by the consumer.
- the consumer includes one movable element.
- the consumer is especially a solenoid valve to control the Fuel metering in an internal combustion engine.
- a Solenoid valve becomes the movable element as a valve needle designated.
- FIG. 1 the device according to the invention is shown using a block diagram.
- a consumer 100 is connected with its first connection to a supply voltage U bat .
- the second connection of the consumer 100 is connected to the first connection of a switching means 110.
- the second connection of the switching means 110 is connected to a first connection of a current measuring means 120.
- the second terminal of the current measuring means 120 is in contact with ground.
- 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 110 also between the supply voltage and be arranged to the consumer. Furthermore, it can Current measuring means 120 between the switching means and the Consumer or between the consumer and the Supply voltage can be arranged.
- 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 used for Metering of fuel is used.
- the control connection of the switching means 110 is with a Switch 130 connected.
- the changeover switch switches optionally the output signal of a current regulator 140 or that Output signal of a voltage regulator 160 to the Control connection of the switching means.
- the switchover takes place depending on a controller 135.
- the current controller 140 receives the output signal as the setpoint ISN a setpoint specification 145 and as actual value II Output signal fed to a current determination 150.
- the Output signal of the current determination 150 also arrives a second current controller 170, which also the actual value IS a second setpoint specification 175 is processed.
- the second current regulator 170 acts on the voltage regulator 160 with a setpoint US.
- the actual value UI of the Voltage regulator 160 is determined by a voltage determination 165 provided.
- the voltage determination 165 is with the first and second Connection of the consumer connected.
- the current determination 150 is with the first and second connection of the current measuring means 120 connected.
- the current I that flows through the consumer 100 becomes by means of the current measuring means 120 and the current determination 150 detected.
- the fourth setpoint specification 145 gives a setpoint ISN before.
- the setpoint ISN and the actual value II are compared and depending on this comparison gives the first Current controller 140 a control signal to act on the Switching means 110 before.
- To determine the switching time at which the Valve needle reaches a certain position is usually during a time window in which the switching time is expected to change from a current regulation to a Voltage regulation and / or a voltage control passed over.
- the time window is defined by two points in time. This are the start and end of the time window.
- the beginning the time window is, for example, by a fixed or predeterminable time period starting from the beginning of the Control defined.
- the end of the time window is for example by a fixed or predeterminable period of time defined starting from the beginning of the time window.
- the Control 135 the switch 130 in the dashed Position.
- This means in the time window is the Voltage regulator 160 active.
- the voltage regulator 160 compares the voltage UI applied to the consumer, which is provided by the voltage determination 165 with a setpoint US. Controls based on this comparison the controller 160 switches the switching means 110 accordingly.
- the Switching time by evaluating the time course a size equal to the current flowing through the consumer flows, corresponds.
- the switching time detected when the current curve kinks over time having.
- the setpoint US for the voltage of one predetermined second current regulator 170.
- a second Setpoint specification 175 a setpoint IS for the current during of the time window that is selected so that the Solenoid valve needle during energization with the maximum possible force is held in position without an overcurrent shutdown occurs.
- This setpoint is compared to that during the time window measured current II compared and dependent on this Current comparison becomes a setpoint US for the voltage regulator 160 specified.
- the actual value II is measured preferably in the area of the switching time. The measurement the actual value occurs shortly before, during or shortly after Switching time. It is particularly advantageous if a weighted average current for each solenoid valve as Actual value is used.
- controller 170 which is preferably has an integral behavior to an applicable Current setpoint introduced.
- the voltage to which is regulated during the time window from one Basic value that can be specified depending on the battery voltage, and an offset value.
- the offset value is thereby determined by the controller 170. So that vibrations in Control loop avoided. For example, at short-term heavily loaded battery the I-part of the Controller too high. This would be the following Relief of the battery in turn to a power cut to lead.
- FIG. 2 shows a particularly advantageous embodiment the invention illustrated by a flowchart.
- a time counter in step 200 t set to 0.
- the time counter t becomes one increased.
- the subsequent query 210 checks whether the time counter t is greater than a threshold t1. Is if this is not the case, step 205 follows again. If the If the time counter t is greater than the threshold t1, step follows 220.
- the threshold t1 corresponds to the lower value of the Time window within which the injection is expected occurs. This time threshold t1 is preferred depending on at least the switching time of the previous injection and other operating parameters given.
- step 220 Control 135 of the switch 130 driven so that a current control to a voltage control becomes.
- step 225 the actual value II measured for the current. It is particularly advantageous if the current current value at the time of switching as actual value II is used.
- the subsequent query 230 checks whether the actual value II equal to the setpoint IS, that of the second setpoint specification 175 is specified. If this is the case, it ends Program in step 280. If not, do so Inquiry 235 checks whether the actual value is greater than that Setpoint is. If this is the case, then in step 240 the The setpoint and the voltage US are reduced by the value ⁇ U. A query 245 then follows, which checks whether the Setpoint US is less than a lower threshold UMI. Is if this is not the case, the program ends in step 280. If the value is less than the lower threshold, then in Step 250 set the setpoint US to the value UMI.
- Query 235 recognizes that the actual value is not greater than is the target value IS, the value US for the voltage increases by the value ⁇ U.
- the subsequent one Request 265 checks whether the setpoint US for the voltage greater than an upper threshold UMA. If so, so the setpoint US for the voltage becomes the value UMA set. If the threshold is not greater than the upper one Threshold UMA, the program also ends in step 280.
- the voltage is at lower and upper maximum values limited.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims (7)
- Verfahren zur Ansteuerung eines elektromagnetischen Verbrauchers, der ein bewegliches Element umfaßt, insbesondere eines Magnetventils zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine, wobei innerhalb eines Zeitfensters ein Schaltzeitpunkt ermittelt wird, bei dem das bewegliche Element eine bestimmte Lage erreicht, dadurch gekennzeichnet, daß innerhalb des Zeitfensters die am Verbraucher anliegende Spannung auf einen adaptierbaren Sollwert steuerbar und/oder regelbar ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Sollwert für die Spannung ausgehend von einem Stromregler vorgebbar ist.
- Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß der Stromregler einen Istwert des Strom während des Zeitfensters auf einen vorgebbaren Wert einstellt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Istwert im Bereich des Schaltzeitpunkts erfaßt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Sollwert für die Spannung auf Maximalwerte begrenzt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ermittlung des Schaltzeitpunkts durch Auswertung des zeitlichen Verlaufs einer Größe, die dem Strom, der durch den Verbraucher fließt, entspricht, erfolgt.
- Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers, der ein bewegliches Element umfaßt, insbesondere eines Magnetventils zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine, mit Mitteln, die innerhalb eines Zeitfensters ein Schaltzeitpunkt ermitteln, bei dem das bewegliche Element eine bestimmte Lage erreicht, dadurch gekennzeichnet, daß Regelmittel vorgesehen sind, die innerhalb des Zeitfensters die am Verbraucher anliegende Spannung auf einen adaptierbaren Sollwert steuern und/oder regeln.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19750027 | 1997-11-12 | ||
DE19750027A DE19750027A1 (de) | 1997-11-12 | 1997-11-12 | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0916828A2 true EP0916828A2 (de) | 1999-05-19 |
EP0916828A3 EP0916828A3 (de) | 2000-08-02 |
EP0916828B1 EP0916828B1 (de) | 2004-05-26 |
Family
ID=7848427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98113661A Expired - Lifetime EP0916828B1 (de) | 1997-11-12 | 1998-07-22 | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
Country Status (4)
Country | Link |
---|---|
US (1) | US6097585A (de) |
EP (1) | EP0916828B1 (de) |
JP (1) | JPH11241663A (de) |
DE (2) | DE19750027A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078161A1 (de) | 2011-03-03 | 2012-09-06 | Robert Bosch Gmbh | Verfahren zur Erkennung einer Nadelbewegung eines Dosierventils und entsprechendes Kontrollmodul |
US9752990B2 (en) | 2013-09-30 | 2017-09-05 | Honeywell International Inc. | Low-powered system for driving a fuel control mechanism |
RU2561509C1 (ru) * | 2014-04-29 | 2015-08-27 | Федеральное государственное унитарное предприятие "Научно-исследовательский технологический институт имени А.П. Александрова" | Способ управления группой электромагнитных механизмов, преимущественно запорных клапанов, и устройство для его реализации |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4420282A1 (de) | 1994-06-10 | 1995-12-14 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5813133A (ja) * | 1981-07-18 | 1983-01-25 | Hitachi Ltd | インジエクタ駆動回路 |
DE3811670A1 (de) * | 1988-04-07 | 1989-10-19 | Rexroth Mannesmann Gmbh | Verfahren zur kompensation der durch temperaturbedingte widerstandsaenderungen verursachten aenderung der stellkraft eines elektromagnetischen antriebs fuer ein proportionalventil |
US4922878A (en) * | 1988-09-15 | 1990-05-08 | Caterpillar Inc. | Method and apparatus for controlling a solenoid operated fuel injector |
US5632250A (en) * | 1994-09-20 | 1997-05-27 | Honda Giken Kogyo Kabushiki Kaisha | Gas fuel supply system for vehicle |
-
1997
- 1997-11-12 DE DE19750027A patent/DE19750027A1/de not_active Withdrawn
-
1998
- 1998-07-22 DE DE59811458T patent/DE59811458D1/de not_active Expired - Lifetime
- 1998-07-22 EP EP98113661A patent/EP0916828B1/de not_active Expired - Lifetime
- 1998-11-11 JP JP10320700A patent/JPH11241663A/ja active Pending
- 1998-11-12 US US09/191,053 patent/US6097585A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4420282A1 (de) | 1994-06-10 | 1995-12-14 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
Also Published As
Publication number | Publication date |
---|---|
JPH11241663A (ja) | 1999-09-07 |
EP0916828A3 (de) | 2000-08-02 |
US6097585A (en) | 2000-08-01 |
DE59811458D1 (de) | 2004-07-01 |
EP0916828B1 (de) | 2004-05-26 |
DE19750027A1 (de) | 1999-05-20 |
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