EP0424280B1 - Elektronische Ansteuerungsschaltung für einen gleichstromgespeisten Schwingmotor - Google Patents

Elektronische Ansteuerungsschaltung für einen gleichstromgespeisten Schwingmotor Download PDF

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Publication number
EP0424280B1
EP0424280B1 EP19900420426 EP90420426A EP0424280B1 EP 0424280 B1 EP0424280 B1 EP 0424280B1 EP 19900420426 EP19900420426 EP 19900420426 EP 90420426 A EP90420426 A EP 90420426A EP 0424280 B1 EP0424280 B1 EP 0424280B1
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EP
European Patent Office
Prior art keywords
coil
circuit
signal
control
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.)
Expired - Lifetime
Application number
EP19900420426
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English (en)
French (fr)
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EP0424280A1 (de
Inventor
Alain Kobilsek
Dominique Villard
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.)
Merlin Gerin SA
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Merlin Gerin SA
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Publication date
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0424280A1 publication Critical patent/EP0424280A1/de
Application granted granted Critical
Publication of EP0424280B1 publication Critical patent/EP0424280B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3021—Charging means using unidirectional coupling

Definitions

  • the invention relates to an electronic circuit for controlling a vibrating motor comprising a control coil, means for controlling the passage of current through the coil causing, when a control signal from the vibrating motor is applied to them, alternately the supply in coil current during an active period and non-supply of coil current during a rest period.
  • the vibrating motor control coil is supplied by a periodic current.
  • a rectified alternating current is applied to the coil.
  • the object of the invention is to provide an electronic circuit for controlling a vibrating motor supplied from a direct supply voltage, the supply voltage possibly varying relatively considerably within different ranges.
  • the means for controlling the passage of current through the coil comprise a static switch, connected in series with the coil across a continuous supply voltage and comprising an electrode control connected to the output of an astable multivibrator, said astable multivibrator producing a binary signal making the static switch conductive during said active period, of a duration less than a predetermined value (T2 max), the control means also comprising means for controlling the duration of the active period to the current passing through the coil, said electronic control circuit comprising means for rapidly discharging, during the blocking of the static switch, the energy stored in the coil.
  • control means comprise a measurement resistor arranged in series with the static switch and the coil, and a comparator receiving on a first input a signal representative of the voltage across the terminals of the measurement resistance and on a second reference signal input, the output of which is applied to a servo input of the astable multivibrator so as to control a transition of the output signal of the astable multivibrator from its active period to its rest period when the current passing through the coil reaches a predetermined value.
  • the control coil 10 for controlling a vibrating motor (not shown) of a known type is supplied from a DC voltage source V1.
  • the coil 10 is connected in series with a transistor T, preferably of the MOS type, and a measurement resistor R1 between the terminals 12 and 14 of the power source.
  • the coil 10 is therefore supplied only when the transistor T is made conductive by the control circuit.
  • the coil 10 is supplied with a periodic signal, the transistor T being, in the presence of a control signal from the vibrating motor, made alternately conductive and non-conductive and the palette of the vibrating motor being attracted by coil when the transistor T is conductive and returned by a spring when the transistor is blocked.
  • a switch 16 normally open, connecting the DC voltage source V1 to a circuit 18 for supplying the control circuit, is closed in the presence of the vibrating motor control signal.
  • the switch 16 and its control can be achieved by any suitable means.
  • the supply circuit 18 supplies an astable multivibrator 20 with a stabilized DC voltage V2.
  • the astable multivibrator 20 comprises an astable multivibrator producing a signal A intended to be applied to the gate of the transistor T.
  • the signal A is a binary type signal passing alternately from a high state to a low state and vice versa, with a certain ratio cyclic.
  • a conventional multivibrator (fig. 2) comprises an operational amplifier 22, supplied by the voltage V2, and whose non-inverting input receives a reference voltage (signal B) taking two distinct states as a function of the output voltage.
  • this reference voltage is obtained by means of a voltage divider constituted by two resistors R2 and R3, in series across the supply voltage V2, the non-inverting input being, moreover, connected to the output A1 of the amplifier 22 by a resistor R4.
  • the inverting input of the operational amplifier is connected to ground by a capacitor C1 and to the output A1 of the amplifier by a resistor R5.
  • a limiting resistor R6 connects the output of amplifier 22 to the gate of transistor T.
  • the durations of the high and low states of such an astable circuit are fixed, proportional respectively to the charge and discharge durations of the capacitor C1.
  • the stabilized supply voltage V2 being fixed, for example equal to 15 V, the increase in the supply voltage V1 of the vibrating motor within a determined range can lead to harmful overheating. Indeed, the duration of the passage of the current in the coil 10 being fixed, independently of the value of the voltage V1, the current crossing the coil is all the more important as the voltage V1 is important.
  • the duration of the high state of the output signal A of the astable multivibrator 20 is controlled by the current passing through the coil 10.
  • the voltage C across the measurement resistor R1 (fig. 1), representative of this current, is applied to a servo input of the astable multivibrator 20.
  • the voltage C is applied to the non-inverting input of an operational amplifier 24, supplied by the voltage V2 and whose inverting input is connected to a voltage Cref reference.
  • an operational amplifier 24 supplied by the voltage V2 and whose inverting input is connected to a voltage Cref reference.
  • the latter is obtained by means of a voltage divider constituted by two resistors R7 and R8 in series between the ground and the voltage V2.
  • the output of the operational amplifier 24 is connected to the anode of a diode D1, the cathode of which is connected to the inverting input of the operational amplifier 22.
  • FIG. 3 illustrates the waveforms obtained at various points of the astable multivibrator according to FIG. 2.
  • V2 15 V and the resistors R2, R3 and R4 are identical, so that the signal B applied to the non-inverting input of the amplifier 22 passes from a low reference value (5V ) to a high reference value (10V) when the signal A1 passes respectively from its low state (0V) to its high state (15V).
  • the chopper then operates normally, as in the absence of servo-control: signal E, corresponding to the voltage across the capacitor, which is at its maximum reference value (10V) at the start (t0, t2, t4, t6, t8) of the rest period (T1) of the control signal A1, tends to 0 with a predetermined time constant R5 C1 (discharge of C1).
  • the output A1 of the operational amplifier 22 switches and takes its high value (15V).
  • the signal B then goes to its high reference value (10V), the hysteresis of the reference values not allowing a new switching of the signal A1 until the signal E has not reached its maximum reference value (10V).
  • the capacitor C1 charges through the resistor R5, the voltage E at its terminals tending towards 15V (value of A1) with a fixed time constant R5 C1.
  • T2 of the signal A1 where it is in the high state, the transistor T is conductive and a current flows through the coil 10 and the measurement resistance R1.
  • FIG. 3 shows the signals C obtained during the period T2 respectively with a supply voltage V1 close to the nominal voltage (24V) (t1-t2), with a voltage V1 lower than this nominal voltage (t5- t6) and with a voltage V1 greater than this nominal voltage (t3-t4 and t7-t8).
  • the end of the active period T2 is therefore determined by the moment when the current passing through the coil 10 reaches a predetermined peak value Ic, that is to say when the voltage C reaches the reference voltage Cref.
  • This active period T2 nevertheless remains always less than the period T2max obtained when the astable multivibrator operates without slaving.
  • a protection and discharge circuit is arranged in parallel on the transistor T and the resistor R1 so as to limit the overvoltages at the terminals of the transistor and to rapidly discharge the coil 10 when the transistor is blocked. It is indeed essential to protect the transistor against overvoltages created by a rapid variation of the current in the coil and to quickly evacuate the energy stored in the coil so that a spring recalls the palette of the vibrating motor during the rest period (T1).
  • Such a circuit is preferably constituted (fig. 1) by a diode D2 of the Transil type arranged in series with a power resistor R9 between the drain of the transistor T and the ground.
  • the same control circuit can be used for different supply voltage ranges of the coil (10).
  • four ranges of DC voltage are generally used: 24-30V, 48-60V, 100-125V and 220-250V.
  • Each voltage range is associated with a vibrating motor having a coil whose resistance varies from one range to another.
  • the measurement resistance R1 is determined, taking into account the resistance of the coil, so as to allow correct servoing in all ranges.
  • the astable multivibrator 20 could be supplied with power permanently, the supply voltage V1 being applied to the coil only in the presence of a command signal from the vibrating motor. Furthermore, the functions of decoupling by the MOS transistor (T) and of measuring the current by the resistor R1 can be fulfilled by a MOS transistor with internal current measurement.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Stepping Motors (AREA)

Claims (8)

  1. Elektronische Steuerschaltung eines Vibrationsmotors mit einer Steuerspule (10) sowie Mitteln (16, 18, 20, T) zur Steuerung des Stromflusses in der Spule, die bei Beaufschlagung mit einem Steuersignal des Vibrationsmotors abwechselnd die Stromversorgung der Spule während einer aktiven Phase (T2) und die Unterbrechung der Stromversorgung der Spule während einer Ruhephase (T1) bewirken, dadurch gekennzeichnet, daß die Mittel zur Steuerung des Stromflusses in der Spule einen mit der Spule (10) in Reihe liegenden Halbleiterschalter (T) umfassen, der an die Klemmen einer Gleichspannungsquelle (V1) angeschlossen ist und eine an den Ausgang eines astabilen Multivibrators (20) angeschlossene Steuerelektrode aufweist, wobei der genannte astabile Multivibrator (20) ein binäres Signal (A) erzeugt, das den Halbleiterschalter (T) während der genannten aktiven Phase (T2), deren Dauer unterhalb eines festgelegten Wertes (T2 max) liegt, in den leitenden Zustand schaltet, die Steuermittel darüber hinaus Mittel (R1, 24, D1) zur Regelung der Dauer der aktiven Phase in Abhängigkeit von dem die Spule durchfließenden Strom aufweisen und die genannte elektronische Steuerschaltung Mittel (D2, R9) zur schnellen Abführung der während des Sperrzustands des Halbleiterschalters (T) in der Spule gespeicherten Energie umfaßt.
  2. Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß die Regelungsmittel einen mit dem Halbleiterschalter (T) und der Spule (10) in Reihe liegenden Meßwiderstand (R1) sowie einen Komparator (24) umfassen, dessen erster Eingang mit einem der Spannung an den Klemmen des Meßwiderstands (R1) proportionalen Signal (C) und dessen zweiter Eingang mit einem Referenzsignal (Cref) beaufschlagt werden, und dessen Ausgangssignal einem Regeleingang der astabilen Schaltung zugeführt wird, so daß ein Übergang des Ausgangssignals (A) der astabilen Schaltung von seiner aktiven Phase (T2) in seine Ruhephase (T1) gesteuert wird, wenn der die Spule durchfließende Strom einen bestimmten Wert erreicht.
  3. Schaltung nach Anspruch 2, dadurch gekennzeichnet, daß der astabile Multivibrator (20) einen ersten, mit einem vom Ausgangssignal (Al) abhängigen Referenzsignal (B) beaufschlagten Eingang (+) sowie einen zweiten, den genannten Regeleingang bildenden und über einen Kondensator (C1) mit Masse sowie über einen Widerstand R5 mit dem Ausgang des Multivibrators verbundenen zweiten Eingang (E) aufweist, wobei die Regelmittel eine zwischen den Ausgang des Komparators und den Regeleingang des astabilen Multivibrators (20) geschaltete Diode (D1) umfassen.
  4. Schaltung nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie eine stabilisierte Stromversorgungsschaltung (18) umfaßt, die mit einem über das Steuersignal des Vibrationsmotors angesteuerten Schaltkontakt (16) in Reihe liegt und an die Klemmen der Gleichspannungsquelle (V1) angeschlossen ist.
  5. Schaltung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Halbleiterschalter als MOS-Transistor ausgeführt ist.
  6. Schaltung nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sie eine Schutzschaltung (D2, R9) umfaßt, die parallel zu den mit der Spule (10) in Reihe liegenden und an die Klemmen der Spannungsquelle (V1) angeschlossen Komponenten (T, R1) geschaltet ist.
  7. Schaltung nach Anspruch 6, dadurch gekennzeichnet, daß die Schutzschaltung (D2, R9) parallel zum Halbleiterschalter (T) und zu einem Meßwiderstand (R1) geschaltet ist.
  8. Schaltung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß die Schutzschaltung (D2, R9) als Reihenschaltung aus einer Begrenzerdiode (D2) und einem Leistungs-Entladewiderstand (R9) ausgeführt ist.
EP19900420426 1989-10-17 1990-10-03 Elektronische Ansteuerungsschaltung für einen gleichstromgespeisten Schwingmotor Expired - Lifetime EP0424280B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913665A FR2653275B1 (fr) 1989-10-17 1989-10-17 Circuit electronique de commande d'un moteur vibrant alimente en courant continu.
FR89136665 1989-10-17

Publications (2)

Publication Number Publication Date
EP0424280A1 EP0424280A1 (de) 1991-04-24
EP0424280B1 true EP0424280B1 (de) 1994-08-03

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Application Number Title Priority Date Filing Date
EP19900420426 Expired - Lifetime EP0424280B1 (de) 1989-10-17 1990-10-03 Elektronische Ansteuerungsschaltung für einen gleichstromgespeisten Schwingmotor

Country Status (3)

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EP (1) EP0424280B1 (de)
DE (1) DE69011269D1 (de)
FR (1) FR2653275B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104505214A (zh) * 2014-12-19 2015-04-08 安阳凯地电磁技术有限公司 一种大推力低温升无噪音交流电磁铁

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729005A1 (fr) * 1994-12-28 1996-07-05 Schneider Electric Sa Dispositif electrique de commande d'ouverture et de fermeture d'un interrupteur ou d'un disjoncteur
US6107702A (en) * 1999-03-29 2000-08-22 Siemens Energy & Automation, Inc. Electrical control module for a circuit breaker stored energy operator assembly
ES2636771T3 (es) * 2011-07-25 2017-10-09 Abb Schweiz Ag Actuador para un disyuntor
US9184014B2 (en) * 2013-02-01 2015-11-10 General Electric Company Electrical operator for circuit breaker and method thereof

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US3870931A (en) * 1974-02-04 1975-03-11 Sun Chemical Corp Solenoid servomechanism
DE3112621A1 (de) * 1981-03-30 1982-10-21 Elektroteile GmbH, 7772 Uhldingen-Mühlhofen "schaltungsanordnung zur ansteuerung von elektromagneten"
DE3233536A1 (de) * 1982-09-10 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum getakteten regeln eines eine spule durchfliessenden stromes
FR2593323B1 (fr) * 1986-01-17 1990-10-26 Merlin Gerin Electro-aimant a armature vibrante d'armement d'un ressort d'un appareil de coupure de courant
US4720762A (en) * 1986-12-29 1988-01-19 Motorola, Inc. Current drive circuit
DE3701985A1 (de) * 1987-01-23 1988-08-04 Knorr Bremse Ag Vorschaltelektronik fuer ein gleichspannungserregbares geraet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104505214A (zh) * 2014-12-19 2015-04-08 安阳凯地电磁技术有限公司 一种大推力低温升无噪音交流电磁铁
CN104505214B (zh) * 2014-12-19 2016-08-24 安阳凯地电磁技术有限公司 一种大推力低温升无噪音交流电磁铁

Also Published As

Publication number Publication date
FR2653275B1 (fr) 1991-12-13
EP0424280A1 (de) 1991-04-24
FR2653275A1 (fr) 1991-04-19
DE69011269D1 (de) 1994-09-08

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