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EP0837479A3 - Driver circuit for electromagnet - Google Patents

Driver circuit for electromagnet Download PDF

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Publication number
EP0837479A3
EP0837479A3 EP97117371A EP97117371A EP0837479A3 EP 0837479 A3 EP0837479 A3 EP 0837479A3 EP 97117371 A EP97117371 A EP 97117371A EP 97117371 A EP97117371 A EP 97117371A EP 0837479 A3 EP0837479 A3 EP 0837479A3
Authority
EP
European Patent Office
Prior art keywords
current
signal
value
signal value
coil
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
EP97117371A
Other languages
German (de)
French (fr)
Other versions
EP0837479A2 (en
EP0837479B1 (en
Inventor
Trent Lynn Goodnight
Vijay Manilal Dharia
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP0837479A2 publication Critical patent/EP0837479A2/en
Publication of EP0837479A3 publication Critical patent/EP0837479A3/en
Application granted granted Critical
Publication of EP0837479B1 publication Critical patent/EP0837479B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H01F2007/1855—Monitoring or fail-safe circuits using a stored table to deduce one variable from another

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Magnetically Actuated Valves (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Feedback Control In General (AREA)
  • Color Printing (AREA)
  • Control Of Linear Motors (AREA)
  • Electromagnets (AREA)

Abstract

Es wird eine elektrische Schaltung zum Anlegen eines oszillierenden elektrischen Stromes an eine Spule (L1) eines Elektromagneten beschrieben, durch die der Elektromagnet in Abhängigkeit von Führungssignalen ansteuerbar ist. Bei dem Elektromagneten handelt es sich vorzugsweise um den Elektromagneten eines Hydrauliksteuerventils.There will be an electrical circuit for applying a oscillating electrical current to a coil (L1) of a Electromagnets described by which the electromagnet in Dependency on command signals can be controlled. In which Electromagnets are preferably the Solenoid of a hydraulic control valve.

Um einen Durchschnittsstrom zu erzeugen, der in linearem Zusammenhang mit dem Eingangs- oder Führungssignal steht wird vorgeschlagen, daß die Treiberschaltung die Spule (L1) mit einem Strom versorgt, welcher veränderliche obere und untere Grenzstromwerte (V-PU, V-PL) aufweist. Dabei nimmt der untere Grenzstromwert (V-PL) im wesentlichen einen konstanten Prozentsatz des oberen Grenzstromwerts (V-PU) ein.To generate an average current that is in linear Is related to the input or command signal proposed that the driver circuit connect the coil (L1) with a Power supplied, which variable upper and lower Limit current values (V-PU, V-PL). The lower one takes Limit current value (V-PL) essentially a constant Percentage of the upper limit current value (V-PU).

Beispielsweise enthält die Schaltung einen Signalteiler (R8, R9), der aus dem Eingangssignal (V-CMD) einen oberen Signalwert (V-PU) und einen unteren Signalwert (V-PL) erzeugt, wobei der untere Signalwert (V-PL) einen konstanten Prozentwert des oberen Signalwertes (V-PU) einnimmt. Ein Stromsensor (R2) erzeugt ein Strommeßsignal (VSENSE), welches den Strom durch die Spule (L1) repräsentiert. Ein erster Komparator (14) vergleicht das Strommeßsignal (VSENSE) mit dem oberen Signalwert (V-PU), und ein zweiter Komparator (16) vergleicht das Strommeßsignal (VSENSE) mit dem unteren Signalwert (V-PL). Eine Leistungsschalteinrichtung (28) ist an eine Spannungsquelle und die Magnetspule (L1) angeschlossen und verbindet oder trennt diese in Abhängigkeit der Ausgangssignale des ersten und des zweiten Komparators (14, 16).

Figure 00000001
For example, the circuit contains a signal divider (R8, R9) which generates an upper signal value (V-PU) and a lower signal value (V-PL) from the input signal (V-CMD), the lower signal value (V-PL) one takes a constant percentage of the upper signal value (V-PU). A current sensor (R2) generates a current measurement signal (VSENSE), which represents the current through the coil (L1). A first comparator (14) compares the current measurement signal (VSENSE) with the upper signal value (V-PU), and a second comparator (16) compares the current measurement signal (VSENSE) with the lower signal value (V-PL). A power switching device (28) is connected to a voltage source and the magnetic coil (L1) and connects or disconnects them depending on the output signals of the first and second comparators (14, 16).
Figure 00000001
EP97117371A 1996-10-16 1997-10-08 Driver circuit for electromagnet Expired - Lifetime EP0837479B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US731472 1996-10-16
US08/731,472 US5748431A (en) 1996-10-16 1996-10-16 Solenoid driver circuit

Publications (3)

Publication Number Publication Date
EP0837479A2 EP0837479A2 (en) 1998-04-22
EP0837479A3 true EP0837479A3 (en) 1999-01-13
EP0837479B1 EP0837479B1 (en) 2003-01-15

Family

ID=24939650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117371A Expired - Lifetime EP0837479B1 (en) 1996-10-16 1997-10-08 Driver circuit for electromagnet

Country Status (10)

Country Link
US (1) US5748431A (en)
EP (1) EP0837479B1 (en)
JP (1) JP3068043B2 (en)
AR (1) AR010497A1 (en)
AU (1) AU693746B2 (en)
BR (1) BR9705040A (en)
CA (1) CA2209425C (en)
DE (1) DE59709139D1 (en)
ES (1) ES2185854T3 (en)
MX (1) MX9707840A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5818678A (en) * 1997-10-09 1998-10-06 Delco Electronics Corporation Tri-state control apparatus for a solenoid having on off and PWM control modes
US6256185B1 (en) 1999-07-30 2001-07-03 Trombetta, Llc Low voltage direct control universal pulse width modulation module
US6407902B1 (en) 2000-02-29 2002-06-18 Dietrich Industries, Inc. Control system for a solenoid valve driver used to drive a valve of a compression cylinder
US6538345B1 (en) 2000-10-24 2003-03-25 Trombetta, Llc Load bank alternating current regulating control
US7740225B1 (en) * 2000-10-31 2010-06-22 Nordson Corporation Self adjusting solenoid driver and method
US6978978B2 (en) * 2000-10-31 2005-12-27 Nordson Corporation PWM voltage clamp for driver circuit of an electric fluid dispensing gun and method
FR2848019A1 (en) * 2002-11-28 2004-06-04 Johnson Controls Tech Co ELECTROMAGNETIC RELAY CONTROL
US6765412B1 (en) 2003-05-01 2004-07-20 Sauer-Danfoss Inc. Multi-range current sampling half-bridge output driver
US7124047B2 (en) 2004-09-03 2006-10-17 Eaton Corporation Mathematical model useful for determining and calibrating output of a linear sensor
WO2007016151A2 (en) * 2005-07-29 2007-02-08 Graco Minnesota Inc. Reciprocating pump with electronically monitored air valve having battery and solenoid electronic monitoring
US8059382B2 (en) * 2008-04-18 2011-11-15 Siemens Industry, Inc. Intrinsically safe circuit for driving a solenoid valve at low power
EP2662554A1 (en) 2012-05-11 2013-11-13 Continental Automotive GmbH Driving circuit for a magnetic valve
DE102012212670B3 (en) * 2012-07-19 2014-02-13 Continental Automotive Gmbh Circuit device for actuation of solenoid injection valve in battery of motor car, has comparator whose non-inverting input is connected with nodal point, negative pole of supply voltage source and control unit outputs through resistors
DE102013103387A1 (en) 2013-04-05 2014-10-09 Continental Automotive Gmbh Method and device for controlling a solenoid valve
US20150167589A1 (en) * 2013-12-13 2015-06-18 Hyundai Motor Company Method and apparatus for controlling high pressure shut-off valve
WO2016085476A1 (en) * 2014-11-25 2016-06-02 Aerojet Rocketdyne, Inc. Actuator controller
CN104633225B (en) * 2014-12-05 2017-02-22 中国航空工业集团公司第六三一研究所 Drive and control circuit for fast solenoid valve
US11621134B1 (en) 2020-06-02 2023-04-04 Smart Wires Inc. High speed solenoid driver circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764840A (en) * 1986-09-26 1988-08-16 Motorola, Inc. Dual limit solenoid driver control circuit
DE4329917A1 (en) * 1993-09-04 1995-03-09 Bosch Gmbh Robert Set arrangement for the switched feeding of an electromagnetic load

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2964900D1 (en) * 1978-08-24 1983-03-31 Lucas Ind Plc Control circuits for solenoids
JPS5579679A (en) * 1978-12-08 1980-06-16 Hitachi Ltd Controller for transistor chopper
DE2916322A1 (en) * 1979-04-23 1980-11-13 Vdo Schindling Overload protection semiconductor circuit - has AND=gate driven by signals due to drop across protective resistor and by delayed input
FR2548840B1 (en) * 1983-07-08 1986-07-18 Peugeot STATIC CIRCUIT BREAKER
DE3338764A1 (en) * 1983-10-26 1985-05-09 Robert Bosch Gmbh, 7000 Stuttgart Circuit arrangement for switching electrical loads on and off and monitoring them
EP0251529B1 (en) * 1986-06-14 1991-01-30 Massey-Ferguson Services N.V. Tractor hitch control system
GB8616965D0 (en) * 1986-07-11 1986-08-20 Lucas Ind Plc Drive circuit
DE3741765A1 (en) * 1987-12-10 1989-06-22 Wabco Westinghouse Fahrzeug CURRENT CONTROLLER
US4964014A (en) * 1989-01-06 1990-10-16 Deere & Company Solenoid valve driver
US5075568A (en) * 1991-01-22 1991-12-24 Allegro Microsystems, Inc. Switching bipolar driver circuit for inductive load

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764840A (en) * 1986-09-26 1988-08-16 Motorola, Inc. Dual limit solenoid driver control circuit
DE4329917A1 (en) * 1993-09-04 1995-03-09 Bosch Gmbh Robert Set arrangement for the switched feeding of an electromagnetic load

Also Published As

Publication number Publication date
MX9707840A (en) 1998-04-30
CA2209425C (en) 2000-02-22
AR010497A1 (en) 2000-06-28
JP3068043B2 (en) 2000-07-24
JPH10125529A (en) 1998-05-15
AU3996197A (en) 1998-05-14
CA2209425A1 (en) 1998-04-16
DE59709139D1 (en) 2003-02-20
ES2185854T3 (en) 2003-05-01
US5748431A (en) 1998-05-05
EP0837479A2 (en) 1998-04-22
EP0837479B1 (en) 2003-01-15
AU693746B2 (en) 1998-07-02
BR9705040A (en) 1999-03-30

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