EP0653693A2 - Appareil pour réguler la chute de tension aux bornes d'un utilisateur - Google Patents

Appareil pour réguler la chute de tension aux bornes d'un utilisateur Download PDF

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Publication number
EP0653693A2
EP0653693A2 EP94112798A EP94112798A EP0653693A2 EP 0653693 A2 EP0653693 A2 EP 0653693A2 EP 94112798 A EP94112798 A EP 94112798A EP 94112798 A EP94112798 A EP 94112798A EP 0653693 A2 EP0653693 A2 EP 0653693A2
Authority
EP
European Patent Office
Prior art keywords
current
consumer
voltage
voltage drop
appliance
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
EP94112798A
Other languages
German (de)
English (en)
Other versions
EP0653693B1 (fr
EP0653693A3 (fr
Inventor
Klaus Dressler
Andreas Dipl.-Ing. Koch (Fh)
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 EP0653693A2 publication Critical patent/EP0653693A2/fr
Publication of EP0653693A3 publication Critical patent/EP0653693A3/fr
Application granted granted Critical
Publication of EP0653693B1 publication Critical patent/EP0653693B1/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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/267—Current mirrors using both bipolar and field-effect technology
    • 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
    • F02D2041/2058—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 device for controlling a voltage drop across a consumer according to the preamble of the independent claim.
  • Devices for regulating a voltage are known in which the difference between a target voltage and the measured voltage is fed to a controller. This controller forms a manipulated variable to act upon an actuator.
  • the controllers used usually include operational amplifiers and capacitors.
  • the operational amplifiers in particular require a very high outlay on components and application.
  • Conventional controllers must be set so that they work stably.
  • the invention is based on the object of providing a voltage regulator in a device of the type mentioned at the outset, which is constructed as simply as possible. This object is achieved by the features characterized in the independent claim.
  • the device according to the invention has the advantage that the voltage regulator has only very few components that are easy to integrate. Furthermore, the voltage regulator works stably and does not tend to vibrate. In particular, the controller does not need to be specially designed. The dynamics of the controller are determined by just a few components and are therefore easy to control.
  • the invention is explained below with reference to the embodiment shown in the drawing.
  • the figure shows a schematic representation of the circuit arrangement.
  • the exemplary embodiment described is a device for regulating the voltage at a consumer, in particular at an electromagnetic consumer. It is particularly advantageous to use the device according to the invention in connection with internal combustion engines, in particular when metering fuel into a combustion chamber of the internal combustion engine. For this purpose, a solenoid valve can then be used in a particularly advantageous manner to control the metering of fuel into the internal combustion engine.
  • BIP Begin of Injection Period
  • the voltage applied to the solenoid valve is adjusted to a constant value by means of a voltage regulator. It is particularly advantageous if the device described below is used to determine a variable that characterizes the start of injection and / or the end of injection.
  • the consumer is a solenoid valve for determining the amount of fuel injected into an internal combustion engine.
  • the device is used to regulate the voltage at the solenoid valve in order to be able to determine the point in time at which the armature of the solenoid valve reaches its end position.
  • FIG. 1 essential elements of a device for controlling a solenoid-controlled fuel metering device are shown schematically.
  • a connection of a consumer 100 in particular an electromagnetic consumer, is connected to a voltage supply device (Ubat).
  • the second connection of the consumer 100 is connected to ground via a switching means 110 and a sensor 145.
  • the sensor 145 is connected to an evaluation circuit 140.
  • the switching means 110 is preferably implemented as a field effect transistor.
  • Voltage current transformers 421 and 422 tap the potential values present at the connections of the consumer 100.
  • the voltage current transformers 421 and 422 apply a current I H and I L to a block 400.
  • block 400 is connected to a reference voltage V CC via a current source 450.
  • An output of block 400 is connected to the gate of field effect transistor 110 via a gate resistor 423.
  • block 400 is shown in more detail in FIG. Elements already described in FIG. 1 are identified in FIG. 2 with corresponding reference symbols.
  • Ohmic resistors are used as voltage current transformers in the exemplary embodiment shown.
  • the voltage current transformers act on the block 400, which essentially comprise a first current mirror 410 and a second current mirror 420.
  • the voltage current transformers apply currents to the first current mirror 410.
  • the first current mirror 410 is in turn connected to a second current mirror 420. This is connected to the gate of field-effect transistor 110 via a gate resistor 423.
  • a current mirror is usually understood to mean the interconnection of two semiconductor elements in such a way that a current through one semiconductor element results in a corresponding or proportional current through the other semiconductor element. If two transistors are used for a current mirror circuit, the two switching paths of the transistors form two current paths.
  • a transistor 440 serves as the second current path and a transistor 445 as the first current path.
  • the potentials at the two connections of the consumer 100 are tapped via the two resistors 421 and 422.
  • the first resistor 421 is connected via a node 449 to the collector of the transistor 440 of the second current path of the first current mirror.
  • the second resistor 422 is connected via a node 448 to the collector of the transistor 445 of the first current path of the first current mirror.
  • Point 446 is also connected to point 448.
  • a transistor 430 forms the first current path.
  • the collector of transistor 430 is connected to point 449 via point 438.
  • a transistor 435 forms the second current path.
  • the base of transistor 430 is connected to the base of transistor 435 and point 436. This point 436 is connected to point 438.
  • the collector-emitter current of transistor 430 is impressed on transistor 435.
  • the second current path is connected to a reference voltage V CC via a current source 450.
  • the collector of transistor 435 is connected via node 439 to current source 450, to gate resistor 423 and thus to the gate of field effect transistor 110.
  • This device now works as a voltage regulator as follows.
  • the potential values at the consumer 100 are converted into currents by the resistors 421 and 422.
  • the first current mirror 410 forms the difference between the two current values. This actual current is a measure of the voltage drop across the consumer.
  • This actual current is applied to the first current path of the second current mirror 420.
  • This current is mirrored and compared with the target current supplied by the current source 450.
  • This setpoint current supplied by the current source 450 serves as the setpoint.
  • the gate of the field effect transistor is acted upon by the differential current between the target current and the actual current.
  • the desired current is selected such that a current flows through the second path of the current mirror 420 in the steady state, which corresponds to the desired value supplied by the current source 450. If these two currents are the same, that is to say the voltage drop across the consumer 100 corresponds to the target voltage, then no gate current flows and the switching means remains in its position.
  • the procedure is as follows.
  • the voltage to be regulated at the consumer 100 is converted into a current by the voltage current transformers 421 and 422 and the current mirror 410.
  • the current mirror 420 regulates the voltage drop across the consumer to the target current. This is done by mirroring the current supplied by the first current mirror 410 and subtracting it from the desired current at node 439.
  • This differential current is used to control the field effect transistor. This means that the current changes the gate charge and thus the state of the field effect transistor.
  • the voltage regulation has settled when the current established in the second current path is equal to the current supplied by the current source.
  • the second current mirror is used to adapt the I current to this current level.
  • the actual current would be compared directly with the target current.
  • the differential current would be fed to the second current mirror as an input variable.
  • the current provided by the current source 450 corresponds to the voltage drop across the consumer.
  • the voltage at the consumer can be influenced directly by changing the current value.
  • the second current mirror essentially works as a controller with proportional behavior. Due to the capacitances between the gate and source or between the gate and drain of the field effect transistor 110, there is also an integral behavior of the current control.
  • the dynamics of the controller are essentially determined by the current source and the capacitances of the field effect transistor 110.
  • the dynamics can therefore be influenced very easily. Since no operational amplifiers are used, there are no stability problems, which means that the controller does not tend to vibrate.
  • the component expenditure is reduced considerably compared to an implementation with operational amplifiers. Furthermore, the application effort for the controller is reduced since the control parameters do not have to be set.
  • the circuit shown in the figure in particular the current mirrors 410 and 420, can be easily integrated. All measuring voltages are immediately converted into currents. This has the advantage that there are no high voltages at the input of the integrated circuit. A high common mode rejection is possible due to the voltage current transformer.
  • the evaluation circuit determines the point in time at which the armature of the energized solenoid valve reaches an end position.
  • the time course of the current is evaluated at a constant voltage to determine whether this course has a kink or a significant change in the difference quotient of the current.
  • the voltage at the solenoid valve is regulated to a constant value by means of the device described.
EP94112798A 1993-10-20 1994-08-17 Appareil pour réguler la chute de tension aux bornes d'un utilisateur Expired - Lifetime EP0653693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335687A DE4335687A1 (de) 1993-10-20 1993-10-20 Vorrichtung zur Regelung einer an einem Verbraucher abfallenden Spannung
DE4335687 1993-10-20

Publications (3)

Publication Number Publication Date
EP0653693A2 true EP0653693A2 (fr) 1995-05-17
EP0653693A3 EP0653693A3 (fr) 1995-08-30
EP0653693B1 EP0653693B1 (fr) 2001-11-21

Family

ID=6500535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112798A Expired - Lifetime EP0653693B1 (fr) 1993-10-20 1994-08-17 Appareil pour réguler la chute de tension aux bornes d'un utilisateur

Country Status (5)

Country Link
US (1) US5572111A (fr)
EP (1) EP0653693B1 (fr)
JP (1) JP3638318B2 (fr)
DE (2) DE4335687A1 (fr)
ES (1) ES2168281T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726773A1 (de) * 1997-06-24 1999-01-07 Bosch Gmbh Robert Verfahren zum Abgleichen eines Stromreglers
DE10140706A1 (de) 2001-08-18 2003-02-27 Mahle Filtersysteme Gmbh Hochgeschwindigkeitsstelleinrichtung
US8438672B2 (en) 2005-11-11 2013-05-14 Masco Corporation Of Indiana Integrated electronic shower system
JP4715807B2 (ja) * 2007-05-24 2011-07-06 トヨタ自動車株式会社 燃料噴射装置の調整方法、及び燃料噴射装置の制御装置
DE102008007211B4 (de) 2008-02-01 2017-10-26 Continental Automotive Gmbh Schaltungsanordnung zum Ansteuern einer induktiven Last und Verwendung einer solchen Schaltungsanordnung
TWI358621B (en) * 2008-03-11 2012-02-21 Asustek Comp Inc Voltage adjusting apparatus
JP5493711B2 (ja) * 2009-10-29 2014-05-14 Ｊｆｅスチール株式会社 溶射補修材料

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405599A1 (de) * 1984-02-16 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Stromfuehler fuer den regelkreis eines schaltreglers
US5175489A (en) * 1989-10-02 1992-12-29 Kabushiki Kaisha Toshiba Current-detecting circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888632A (en) * 1956-08-23 1959-05-26 Baldwin Piano Co Transistor current regulating circuits
US2991407A (en) * 1958-02-17 1961-07-04 Sylvania Electric Prod Current supply apparatus
US3549983A (en) * 1968-06-18 1970-12-22 Union Carbide Corp High efficiency high power d.c. series type voltage regulator
US5237262A (en) * 1991-10-24 1993-08-17 International Business Machines Corporation Temperature compensated circuit for controlling load current
JPH07121252A (ja) * 1993-10-26 1995-05-12 Rohm Co Ltd 安定化電源回路内蔵ｉｃ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405599A1 (de) * 1984-02-16 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Stromfuehler fuer den regelkreis eines schaltreglers
US5175489A (en) * 1989-10-02 1992-12-29 Kabushiki Kaisha Toshiba Current-detecting circuit

Also Published As

Publication number Publication date
EP0653693B1 (fr) 2001-11-21
US5572111A (en) 1996-11-05
ES2168281T3 (es) 2002-06-16
EP0653693A3 (fr) 1995-08-30
JPH07279741A (ja) 1995-10-27
DE59409968D1 (de) 2002-01-03
JP3638318B2 (ja) 2005-04-13
DE4335687A1 (de) 1995-04-27

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