EP0986703A2 - Dispositif pour la commande d'un appareil de reglage electromecanique - Google Patents

Dispositif pour la commande d'un appareil de reglage electromecanique

Info

Publication number
EP0986703A2
EP0986703A2 EP98933511A EP98933511A EP0986703A2 EP 0986703 A2 EP0986703 A2 EP 0986703A2 EP 98933511 A EP98933511 A EP 98933511A EP 98933511 A EP98933511 A EP 98933511A EP 0986703 A2 EP0986703 A2 EP 0986703A2
Authority
EP
European Patent Office
Prior art keywords
coil
actuator
time
voltage
current
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
EP98933511A
Other languages
German (de)
English (en)
Other versions
EP0986703B1 (fr
Inventor
Christian Hoffmann
Richard Wimmer
Achim Koch
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0986703A2 publication Critical patent/EP0986703A2/fr
Application granted granted Critical
Publication of EP0986703B1 publication Critical patent/EP0986703B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F7/18—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
    • 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
    • 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
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0253—Fully variable control of valve lift and timing using camless actuation systems such as hydraulic, pneumatic or electromagnetic actuators, e.g. solenoid valves
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • 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
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle 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
    • F02D2041/2051—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
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/123—Guiding or setting position of armatures, e.g. retaining armatures in their end position by ancillary coil
    • 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 device for controlling an electromechanical actuator according to the preamble of the independent claim. It relates in particular to an actuator for controlling an internal combustion engine.
  • a known actuator (EP 0 400 389 A2) has an actuator and an actuator.
  • the actuator includes an electromagnet with a core and a coil.
  • the electromagnet is arranged in a housing.
  • An armature plate is arranged to be movable relative to the first electromagnet and is biased by a spring m to a predetermined rest position.
  • the coil is excited with a pull-in current.
  • the pull-in current causes an electromagnetic force that pulls the armature plate against the electromagnet against a force caused by the spring.
  • the actuator is assigned a two-point controller with hysteresis, the controlled variable of which is the current through the coil and the manipulated variable is a pulse-shaped voltage signal which is applied to the coil.
  • the object of the invention is to provide a device for controlling an electromechanical actuator which is simple and which ensures precise, in particular precise, control of the actuator.
  • the invention is solved by the features of the independent claim.
  • the solution is characterized in that a pulse width modulator is provided, which modulates the manipulated variable depending on the supply voltage. So a constant switching time is independent of fluctuations in the Supply voltage guaranteed.
  • the switching period is defined as the period of time that is required to bring the armature plate into contact with the electromagnet from a predetermined rest position against a spring force caused by the spring.
  • the constant switching time is an important advantage because the supply voltage, particularly in a motor vehicle, is subject to greater fluctuations.
  • Another advantage is that an expensive and complex voltage regulator can be dispensed with, since the current profile in the switch-on phase of the regulator, i.e. before the regulator reaches the control range, is always the same on average regardless of the supply voltage, although only one control by the Controller takes place.
  • Actuator designed as a gas exchange valve and the actuator m arranged in an internal combustion engine. This ensures constant switching times for the gas exchange valve regardless of the supply voltage and thus low-consumption and low-emission operation of the internal combustion engine.
  • Figure 1 shows an arrangement of an actuator with a first
  • Embodiment of the device according to the invention for controlling the control device in an internal combustion engine for controlling the control device in an internal combustion engine
  • FIG. 3 shows a further arrangement of a preferred embodiment of the control device with a further embodiment of the device according to the invention for controlling the control device.
  • An actuator 1 ( Figure 1) comprises an actuator 11 and an actuator, which is designed for example as a gas exchange valve and has a shaft 121 and a plate 122.
  • the actuator 11 has a housing 111 in which a first electromagnet is arranged.
  • the first electromagnet has a first core 112.
  • a first coil 113 is embedded in an annular groove of the first core 112.
  • the first core 112 has a recess 114a, which serves as a guide for the shaft 121.
  • An anchor plate 115 is movably arranged in the housing 111 relative to the first core 112.
  • a first spring 11 ⁇ a biases the anchor plate into a predetermined rest position R.
  • Actuator 1 is rigidly connected to a cylinder head 21.
  • An intake port 22 and a cylinder 23 with a piston 24 are assigned to the cylinder head 21.
  • the piston 24 is coupled to a crankshaft 26 via a connecting rod 25.
  • a control device 4 which detects signals from sensors and generates control signals for the actuator 11.
  • the sensors are preferably used as a position sensor 5, which detects a position X of the armature plate 115, as a first ammeter 7a, which detects the actual value I_AV1 of the current through the first coil 113, as a speed sensor 27, which detects the rotational speed N of the crankshaft 26 , or as a load detection sensor 28, which is preferably an air mass meter or a pressure sensor.
  • other sensors can also be present.
  • a voltage source 8 is provided, which is preferably used as a generator, as a battery or as a parallel connection of the Generator and the battery is formed and which generates a supply voltage.
  • the control device 4 comprises a controller, which is preferably designed as a two-point controller 41 with hysteresis, the controlled variable of which is the current through the coil 113 and the manipulated variable is a voltage which is applied to the coil 113.
  • the manipulated variable which is a voltage signal over time, is modulated by a pulse width modulator 42 depending on the supply voltage.
  • the modulated voltage signal is then fed to a driver 7a, which amplifies it and feeds it to the first coil 113.
  • FIG. 2a shows the time course of the carrier signal S ⁇ of the pulse width modulator 42.
  • FIG. 2 b shows the time course of the modulated and amplified voltage signal U1.
  • FIG. 2 c shows the associated course of the actual value I_AV of the current through the first coil 113.
  • FIG. 2 d shows the course over time of the position X of the armature plate 115.
  • the setpoint value of the current through the first coil 113 is a predetermined catch current I_F.
  • the anchor plate 115 comes into contact with the first core 112.
  • the setpoint value of the current through the first coil 113 is a predetermined holding current I_H.
  • the two-point controller 41 with hysteresis accordingly specifies a voltage pulse as a voltage signal from the time ti to the time t 5 , which is modulated with the carrier signal S ⁇ and then amplified by the driver 7a, so that the curve shown in FIG Time ti to t_ results.
  • the coil 113 is acted upon by the amplified and modulated voltage signal U1.
  • the resulting actual value I_AV of the current can be clearly seen in FIG. 2c.
  • the actual value I_AV of the current fluctuates from a point in time ti to a point in time t 5 around the time profile (dotted curve), as it results when the supply voltage has the minimum value U_Min.
  • armature plate 115 comes into contact with first core 112. From time t 6 to time t 7 , setpoint value I_SP1 of the current through the coil is holding current I_H.
  • the time t 6 is preferably chosen so that it is as close as possible to the time t 5a .
  • the impact of the anchor plate 115 is preferably determined by evaluating the position X. In a simple embodiment, the time interval between the times ti and t 6 can also be an experimentally determined, predetermined value.
  • the setpoint value of the current through the first coil 113 changes from zero to the capture current I_F.
  • the supply voltage has the minimum value U_Min.
  • the pulse width T P of the carrier signal S ⁇ is therefore equal to the period T ⁇ .
  • the carrier signal S ⁇ accordingly has a constant value from the time t 8 to the time ti 2 .
  • the time profile of the modulated and amplified voltage signal Ul corresponds to the time t 8 to time t 2 the change in the amplitude of the voltage signal caused by the amplification, that is to say the time course of the manipulated variable of the two-point controller 41.
  • the anchor plate 115 comes into contact with the first core 112. From the point in time tioa to the point in time t X2 , the setpoint is I_SP1 of the current through the coil 113, the holding current I_H.
  • the switching time which is determined by the time required to bring the anchor plate from its open position, which corresponds to the rest position R in this exemplary embodiment, into its closed position C, ie in the system with the first electromagnet, is therefore independent of that Value of the supply voltage and m approximately constant.
  • the time interval between the times ti and t 5a and between the times t 8 and tio is approximately the same. This is an important advantage since a precise switching duration is a prerequisite for precise filling control for the cylinder 23
  • FIG. 3 shows a further arrangement of the preferred embodiment of the control device 1 with a further embodiment of the control device 4 'according to the invention.
  • the actuator 11 differs from that in FIG. 1 in that it has a second electromagnet with a second core 117 and a second coil 118.
  • the second core 117 has a recess 114b which also serves as a guide for the shaft 121.
  • the anchor plate 115 is movably arranged in the housing 111 between the first core 112 and the second core 117.
  • the first spring 116a and the second spring 116b bias the anchor plate into a predetermined rest position R.
  • control device 4 ′ additionally has a further two-point regulator 43 with hysteresis, the controlled variable of which is the current through the second coil 118 and the manipulated variable is a voltage that is applied to the second coil 118.
  • the two-point controller 43 generates a further voltage signal, which is fed to a further pulse width modulator 44 as a modulation signal.
  • the further voltage signal is modulated in the further pulse width modulator 44 in the same way as in the pulse width modulator 42 and then amplified by the driver 7b.
  • the further modulated and corrected voltage signal is applied to the second coil 118.
  • the first or second coil only has to be acted upon with a significantly lower capture current I_F, since the spring-mass system can oscillate and only the losses due to friction have to be compensated for.
  • the actuator can also be designed as an injection valve.
  • the control device 4, 4 ' can be designed as a microcontroller, but it can also comprise a logic circuit or an analog circuit arrangement.
  • the controller or the further controller can also be designed, for example, as a single-point controller with a timing element or as a pulse width modulation controller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un dispositif pour la commande d'un appareil de réglage électromécanique comportant un actionneur et un mécanisme de commande. Le mécanisme de commande comprend un électroaimant avec un noyau (112) et une bobine (113), ainsi qu'une plaque d'induit (115) mobile. Le dispositif comporte un régulateur dont la grandeur réglée correspond au courant passant à travers la bobine (113) et dont la grandeur de réglage correspond à une tension appliquée à la bobine. Une source de tension (8) génère une tension d'alimentation. Un modulateur de durée d'impulsion (42) module la grandeur de réglage en fonction de la tension d'alimentation.
EP98933511A 1997-06-06 1998-05-12 Dispositif pour la commande d'un appareil de reglage electromecanique Expired - Lifetime EP0986703B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19723931 1997-06-06
DE19723931A DE19723931A1 (de) 1997-06-06 1997-06-06 Einrichtung zum Steuern eines elektromechanischen Stellgeräts
PCT/DE1998/001318 WO1998055748A2 (fr) 1997-06-06 1998-05-12 Dispositif pour la commande d'un appareil de reglage electromecanique

Publications (2)

Publication Number Publication Date
EP0986703A2 true EP0986703A2 (fr) 2000-03-22
EP0986703B1 EP0986703B1 (fr) 2002-10-02

Family

ID=7831702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98933511A Expired - Lifetime EP0986703B1 (fr) 1997-06-06 1998-05-12 Dispositif pour la commande d'un appareil de reglage electromecanique

Country Status (5)

Country Link
US (1) US6297941B1 (fr)
EP (1) EP0986703B1 (fr)
JP (1) JP2002506566A (fr)
DE (2) DE19723931A1 (fr)
WO (1) WO1998055748A2 (fr)

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DE10130335C1 (de) * 2001-06-26 2003-02-13 Zf Lemfoerder Metallwaren Ag Ver- und Entriegelungsmechanismus mit Elektromagnet
JP3851140B2 (ja) * 2001-10-30 2006-11-29 ボッシュ株式会社 流量制御用電磁比例制御弁の駆動方法
DE10155969A1 (de) * 2001-11-14 2003-05-22 Bosch Gmbh Robert Vorrichtung zur Ansteuerung eines elektromagnetischen Stellgliedes
DE10227278B4 (de) * 2002-06-19 2012-01-26 Robert Bosch Gmbh Ansteuerschaltung für ein elektromagnetisches Stellglied
DE10315585A1 (de) * 2003-04-05 2004-10-14 Mahle Filtersysteme Gmbh Verfahren zum Betätigen einer elektromagnetischen Stelleinrichtung
DE10358858A1 (de) * 2003-12-16 2005-07-14 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben einer induktiven Last mit unterschiedlichen elektrischen Spannungen
JP2007071186A (ja) * 2005-09-09 2007-03-22 Toyota Motor Corp 電磁駆動弁
JP2009523257A (ja) * 2006-01-11 2009-06-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ エレクトロウェッティングレンズの制御
CN101866737A (zh) * 2009-04-14 2010-10-20 杨泰和 高压启动低压通电保持的电磁致动装置
DE102010001004A1 (de) * 2010-01-19 2011-07-21 Robert Bosch GmbH, 70469 Verfahren und Vorrichtung zur Ansteuerung von Aktuatoren
CN102493886B (zh) * 2011-11-30 2014-04-30 潍柴动力股份有限公司 一种喷油器开启时间修正方法及装置
US20150167589A1 (en) * 2013-12-13 2015-06-18 Hyundai Motor Company Method and apparatus for controlling high pressure shut-off valve
JP6056804B2 (ja) * 2014-04-18 2017-01-11 株式会社デンソー 電磁弁制御装置
US9546069B2 (en) 2015-04-09 2017-01-17 Microsoft Technology Licensing, Llc Drive for electromechanical control of lines
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Also Published As

Publication number Publication date
DE59805814D1 (de) 2002-11-07
JP2002506566A (ja) 2002-02-26
WO1998055748A2 (fr) 1998-12-10
WO1998055748A3 (fr) 1999-03-11
US6297941B1 (en) 2001-10-02
DE19723931A1 (de) 1998-12-10
EP0986703B1 (fr) 2002-10-02

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