FR2606229A1 - System for controlling a single-phase asynchronous motor intended for driving an object such as a blind of the type with orientable slats - Google Patents

System for controlling a single-phase asynchronous motor intended for driving an object such as a blind of the type with orientable slats Download PDF

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Publication number
FR2606229A1
FR2606229A1 FR8615070A FR8615070A FR2606229A1 FR 2606229 A1 FR2606229 A1 FR 2606229A1 FR 8615070 A FR8615070 A FR 8615070A FR 8615070 A FR8615070 A FR 8615070A FR 2606229 A1 FR2606229 A1 FR 2606229A1
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FR
France
Prior art keywords
triac
motor
circuit
blind
phase asynchronous
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Granted
Application number
FR8615070A
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French (fr)
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FR2606229B1 (en
Inventor
Franck Cieslik
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SARI INGENIERIE
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SARI INGENIERIE
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Priority to FR8615070A priority Critical patent/FR2606229B1/en
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Publication of FR2606229B1 publication Critical patent/FR2606229B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6836—Control using sensors sensing obstacle
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6845—Control using sensors sensing position

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Power Engineering (AREA)
  • Blinds (AREA)

Abstract

The invention relates to a system for controlling a single-phase asynchronous motor. This system is characterised in that the circuit supplying the motor 1 comprises a regulating unit such as a triac 2 whose turn-on device comprises means for varying the conduction angle 11, 13. The invention can be used for controlling a blind with orientable slats.

Description

La présente invention concerne un système de commande d'un moteur asynchrone monophasé destiné à l'entratnement d'un objet tel qu'un store du type à lames orientables. The present invention relates to a control system for a single-phase asynchronous motor intended for driving an object such as a blind of the type with adjustable slats.

Les sytèmes de commande connus, qui utilisent généralement des circuits intégrés spécialisés pour l'entraSnement des stores présentent l'inconvénient majeur qu'ils ne permettent pas un réglage en douceur de l'inclinaison des lames. Known control systems, which generally use specialized integrated circuits for driving blinds, have the major drawback that they do not allow smooth adjustment of the inclination of the slats.

La présente invention a pour but de proposer un système de commande d'un moteur asynchrone monophasé qui présente une structure simple tout en permettant un tel réglage de l'inclinaison des lames. The present invention aims to provide a control system for a single-phase asynchronous motor which has a simple structure while allowing such adjustment of the inclination of the blades.

Pour atteindre ce but, le système de commande selon la présente invention est caractérisé en ce que le circuit d'alimentation du moteur comprend un organe gradateur tel qu'un triac dont le dispositif d'amorçage comprend des moyens de variation de l'angle de conduction. To achieve this object, the control system according to the present invention is characterized in that the motor supply circuit comprises a dimming member such as a triac whose priming device comprises means for varying the angle of conduction.

Selon une caractéristique avantageuse de l'invention, le dispositif d'amorçage comprend des moyens d'amorçage du triac par demi-alternances tels qu'une diode de redressement montée avantageusement dans le circuit d'un diac relié à l'électrode de commande du triac. According to an advantageous characteristic of the invention, the starting device comprises means for starting the triac by half-vibrations such as a rectifying diode advantageously mounted in the circuit of a diac connected to the control electrode of the triac.

Selon encore une autre caractéristique avantageuse de l'invention, le dispositif d'amorçage comprend une résistance avantageusement ajustable en parallèle à la diode de redressement et un condensateur, ce dernier formant avec la résistance un circuit RC de retardement ajustable d'amorçage du triac pendant la demi-alternance de blocage de la diode.  According to yet another advantageous characteristic of the invention, the ignition device comprises a resistance advantageously adjustable in parallel to the rectifying diode and a capacitor, the latter forming with the resistance an adjustable RC delay circuit for ignition of the triac during half-wave blocking of the diode.

Selon encore une autre caractéristique avantageuse, le dispositif d'amorçage comprend des moyens interrupteurs actionnables à l'aide de circuits à basse tension, tel que des optotriacs. According to yet another advantageous characteristic, the priming device comprises switch means operable by means of low voltage circuits, such as optotriacs.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparattront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels
- la figure 1 montre sous forme d'un schéma bloc un système de commande d'un moteur asynchrone monophasé selon la présente invention ; et
- la figure 2 montre schématiquement la courbe d'un signal d'alimentation du moteur selon la figure 1, produit par le système représenté à la figure 1.The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a mode of the invention and in which
- Figure 1 shows in the form of a block diagram a control system of a single-phase asynchronous motor according to the present invention; and
FIG. 2 schematically shows the curve of a motor supply signal according to FIG. 1, produced by the system represented in FIG. 1.

Le système de commande selon la présente invention sera décrit dans son application à des moteurs asynchrones monophasés destinés à des stores vénitiens, à savoir du type à lames orientables, pour imprimer à ceux-ci leur mouvement de descente et de montée. The control system according to the present invention will be described in its application to single-phase asynchronous motors intended for Venetian blinds, namely of the type with adjustable slats, for printing on them their downward and upward movement.

En se réfèrant à la figure 1, on constate que le moteur asynchrone monophasé 1 est relié au réseau de par exemple de 220 volts par l'intermédiaire d'un organe gradateur tel qu'un triac 2. Pour déterminer le sens de rotation du moteur et ainsi la direction du mouvement du store (descente ou montée) un dispositif de sélection du sens de rotation permet de relier le triac 2 à des phases différentes 4 ou 5 du moteur. Ce dispositif sélecteur 3 comprend deux commutateurs à relais 6 et 7 dont chacun peut être excité par l'actionnement d'un organe de commande approprié 8 ou 9, tel que par exemple un bouton-poussoir.  Referring to Figure 1, we see that the single-phase asynchronous motor 1 is connected to the network of for example 220 volts via a dimmer such as a triac 2. To determine the direction of rotation of the motor and thus the direction of movement of the blind (lowering or raising) a device for selecting the direction of rotation makes it possible to connect the triac 2 to different phases 4 or 5 of the motor. This selector device 3 comprises two relay switches 6 and 7, each of which can be excited by the actuation of an appropriate control member 8 or 9, such as for example a push button.

Le dispositif d'amorçage du triac 2 comprend un diac 11 et un montage en parallèle de deux circuits 12 et 13 de commande du diac dont chacun comporte un interrupteur formé par un optotriac indiqué en 15 et 16 et actionnable chacun à l'aide d'un organe de commande respectivement 22 et 23, tel qu'un bouton-poussoir monté dans un circuit de basse tension. La réalisation des interrupteurs sous forme d'optotriacs permet d'isoler galvaniquement la partie de basse tension de commande de la partie de puissance. The triac 2 ignition device comprises a diac 11 and a parallel mounting of two circuits 12 and 13 for controlling the diac, each of which comprises a switch formed by an optotriac indicated at 15 and 16 and which can each be actuated using a control member 22 and 23 respectively, such as a push button mounted in a low voltage circuit. The realization of the switches in the form of optotriacs makes it possible to galvanically isolate the low-voltage control part from the power part.

Le circuit de commande 12 du diac 11 est adapté pour rendre le triac conducteur pendant les deux demialternances. Ce circuit ne comporte, à part de l'optotriac 15, qu'une résistance 17 de faible valeur destinée à protéger l'optotriac contre des impulsions. The control circuit 12 of the diac 11 is adapted to make the triac conductive during the two half-cycles. This circuit comprises, apart from the optotriac 15, only a resistance 17 of low value intended to protect the optotriac against pulses.

Le circuit de commande 13 du diac 11 comprend essentiellement une diode de redressement 18 et un montage du type Ra, comportant un montage en série d'une résistance 19 et d'une résistance ajustable 20 et un condensateur 21. Les résistances sont disposées en parallèle à la diode 18 tandis que le condensateur 21 est monté entre la cathode de la diode et l'entrée du triac 2. En outre, on constate qu'une résistance 26 est associée à l'optotriac 16 pour protéger celui-ci contre des impulsions. The control circuit 13 of the diac 11 essentially comprises a rectifying diode 18 and a Ra type circuit, comprising a series circuit of a resistor 19 and an adjustable resistor 20 and a capacitor 21. The resistors are arranged in parallel to the diode 18 while the capacitor 21 is mounted between the cathode of the diode and the input of the triac 2. In addition, it can be seen that a resistor 26 is associated with the optotriac 16 to protect the latter against pulses .

Pour compléter la description du schéma électrique selon la figure 1, les symboles de référence 24 et 25 désignent respectivement des circuits de protection électrique contre des surtensions et antiparasitage. Il s'agit des circuits de protection du réseau et du triac 2 connus en soi. To complete the description of the electrical diagram according to FIG. 1, the reference symbols 24 and 25 respectively designate electrical protection circuits against overvoltage and interference suppression. These are the network protection circuits and the triac 2 known per se.

On décrira ci-après le fonctionnement du système représenté à la figure 1.  The operation of the system shown in FIG. 1 will be described below.

Il convient de rappeler tout d'abord que les stores vénitiens sont conçus de telle façon que lorsqu'on commande leur montée, les lames effectuent tout d'abord un mouvement autour de leur axe selon un angle d'environ 1800 avant que début le mouvement de montée. It should first of all be recalled that the Venetian blinds are designed in such a way that when they are ordered mounted, the slats first of all move around their axis at an angle of around 1800 before the movement begins. climb.

Le système de commande selon la présente invention permet un mouvement du moteur 1 et ainsi des stores à deux vitesses, grâce à la présence des deux circuits de commande 12 et 13 parallèles du diac 11. The control system according to the present invention allows movement of the motor 1 and thus of the two-speed blinds, thanks to the presence of the two parallel control circuits 12 and 13 of the diac 11.

Lorsque l'utilisateur actionne le bouton de commande 22 associé à l'optotriac 15 du circuit 12, le diac 11 est conducteur pendant les deux demi-alternances de la tension du réseau et assure ainsi l'alimentation du moteur 1 par le signal complet du réseau. Le moteur tourne ainsi à sa vitesse maximale dans le sens de la montée ou de la descente du store selon que l'utilisateur ait actionné l'organe de commande 8 ou 9.When the user actuates the control button 22 associated with the optotriac 15 of the circuit 12, the diac 11 is conductive during the two half-vibrations of the network voltage and thus ensures the supply of the motor 1 by the complete signal from the network. The motor thus rotates at its maximum speed in the direction of raising or lowering of the blind, depending on whether the user has actuated the control member 8 or 9.

Si par contre l'utilisateur commande la fermeture du circuit de commande 13 du diac 11, par excitation de l'optotriac 16 à l'aide de l'organe de commande 23 (le circuit de commande 12 étant ouvert), la diode de redressement 18 ne laisse passer qu'une demi-alternance du signal alternatif. Pendant l'autre demi-alternance que la diode 18 bloque, le condensateur 21 se charge selon la constante de temps déterminée par sa valeur de capacité et la valeur des résistances 19 et 20, de sorte que le diac 11 ne peut devenir conducteur qu'à l'instant où la tension du condensateur 21 dépasse le seuil d'amorçage du diac.Par conséquent, le triac 2 est passant pendant une demi-alternance et pendant une durée de temps h t à la fin de l'autre demi-alternance, l'intervalleiX t étant déterminé par la constante de temps du circuit RC de commande du diac 11. La figure 2 illustre la tension U du signal présent à la sortie du triac 2. Ainsi le système selon la présente invention fonctionne en variateur à angle de conduction, ce qui permet de faire varier la vitesse de rotation du moteur 1. If, on the other hand, the user orders the closure of the control circuit 13 of the diac 11, by excitation of the optotriac 16 using the control member 23 (the control circuit 12 being open), the rectifying diode 18 only allows half an alternation of the alternating signal to pass. During the other half-wave that the diode 18 blocks, the capacitor 21 charges according to the time constant determined by its capacitance value and the value of the resistors 19 and 20, so that the diac 11 can only become conductive at the moment when the voltage of the capacitor 21 exceeds the starting threshold of the diac. Consequently, the triac 2 is on for half a half-wave and for a period of time ht at the end of the other half-half-wave, the interval iX t being determined by the time constant of the RC control circuit of the diac 11. FIG. 2 illustrates the voltage U of the signal present at the output of the triac 2. Thus the system according to the present invention operates as a variator with angle of conduction, which makes it possible to vary the speed of rotation of the motor 1.

Si le store qu'équipe le motor 1 se trouve dans sa position basse, l'actionnement de l'organe de commande 18 et par conséquent la mise en oeuvre de la fonction de variation à angle de conduction du système selon l'invention permet un mouvement de rotation des lames autour de leur axe à une vitesse suffisamment faible pour permettre un réglage en douceur de la position angulaire, c'est-à-dire de l'inclinaison des lames. Selon que l'on actionne l'organe de commande 8 et 9 de sélection du sens de rotation du moteur 1, on peut faire varier l'inclinaison des lames dans l'un ou l'autre sens. If the blind fitted to the motor 1 is in its low position, the actuation of the control member 18 and therefore the implementation of the function of variation in conduction angle of the system according to the invention allows a rotational movement of the blades around their axis at a sufficiently low speed to allow a smooth adjustment of the angular position, that is to say the inclination of the blades. Depending on whether one actuates the control member 8 and 9 for selecting the direction of rotation of the motor 1, the inclination of the blades can be varied in one or the other direction.

En résumé, la diode de redressement 18 permet d'amorcer le triac par demi-alternance, tandis que le circuit RC procure une certaine accélération du moteur, ce qui améliore le fonctionnement du moteur et permet d'éliminer le risque de vibrations éventuelles.  In summary, the rectifying diode 18 makes it possible to initiate the triac by half-wave, while the RC circuit provides a certain acceleration of the motor, which improves the operation of the motor and makes it possible to eliminate the risk of possible vibrations.

Claims (6)

REVENDICATIONS 1. Système de commande d'un moteur asynchrone monophasé destiné à l'entraSnement d'un objet tel qu'un store du type à lames orientables, caractérisé en ce que le circuit d'alimentation du moteur (1) comprend un organe gradateur tel qu'un triac (2) dont le dispositif d'amorçage comprend des moyens de variation de l'angle de conduction (11, 13). 1. Control system of a single-phase asynchronous motor intended for driving an object such as a blind of the type with orientable slats, characterized in that the motor supply circuit (1) comprises a dimming member such a triac (2), the priming device of which comprises means for varying the conduction angle (11, 13). 2. Système selon la revendication 1, caractérisé en ce que le dispositif d'amorçage précité comprend des moyens d'amorçage du triac (2) par demi-alternances, tels qu'une diode de redressement (18) montée dans un circuit (13) d'amorçage du triac (2) comprenant avantageusement un diac (11) relié à l'électrode de commande du triac (2). 2. System according to claim 1, characterized in that the aforementioned initiating device comprises means for initiating the triac (2) by half-vibrations, such as a rectifying diode (18) mounted in a circuit (13 ) initiating the triac (2) advantageously comprising a diac (11) connected to the triac control electrode (2). 3. Système selon la revendication 2, caractérisé en ce que le dispositif d'amorçage comprend une résistance (19, 20) avantageusement ajustable, en parallèle à la diode de redressement (18), et un condensateur (21), ce dernier formant avec la résistance (19,20) un circuit RC de retardement ajustable d'amorçage du triac (2) pendant la demi-alternance de blocage de la diode (18). 3. System according to claim 2, characterized in that the priming device comprises a resistor (19, 20) advantageously adjustable, in parallel with the rectifying diode (18), and a capacitor (21), the latter forming with the resistor (19,20) an adjustable RC delay circuit for tripping the triac (2) during the half-cycle of blocking of the diode (18). 4. Système selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'amorçage du triac (2) comprend des moyens interrupteurs actionnables à l'aide de circuits à basse tension, tels que des optotriacs (15, 16). 4. System according to one of the preceding claims, characterized in that the triac priming device (2) comprises switch means operable by means of low voltage circuits, such as optotriacs (15, 16). 5. Système selon l'une des revendications 2 à 4, caractérisé en ce que le dispositif d'amorçage du triac (2) comprend un circuit d'amorçage (12) par les deux demi-alternances, qui est monté en parallèle aux moyens de variation de l'angle de conduction.  5. System according to one of claims 2 to 4, characterized in that the triac priming device (2) comprises a priming circuit (12) by the two half-waves, which is mounted in parallel to the means variation of the conduction angle. 6. Système selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un dispositif de sélection (3) du sens de rotation du moteur (1) avantageusement formé par un dispositif à relais (6 et 7) destiné à relier le triac (2) alternativement à deux entrées de phase différentes (4,5) du moteur.  6. System according to one of the preceding claims, characterized in that it comprises a device for selecting (3) the direction of rotation of the motor (1) advantageously formed by a relay device (6 and 7) intended to connect the triac (2) alternately at two different phase inputs (4,5) of the motor.
FR8615070A 1986-10-29 1986-10-29 CONTROL SYSTEM FOR A SINGLE PHASE ASYNCHRONOUS MOTOR FOR DRIVING AN OBJECT SUCH AS A STEERING BLADE TYPE STORE Expired - Fee Related FR2606229B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8615070A FR2606229B1 (en) 1986-10-29 1986-10-29 CONTROL SYSTEM FOR A SINGLE PHASE ASYNCHRONOUS MOTOR FOR DRIVING AN OBJECT SUCH AS A STEERING BLADE TYPE STORE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8615070A FR2606229B1 (en) 1986-10-29 1986-10-29 CONTROL SYSTEM FOR A SINGLE PHASE ASYNCHRONOUS MOTOR FOR DRIVING AN OBJECT SUCH AS A STEERING BLADE TYPE STORE

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Publication Number Publication Date
FR2606229A1 true FR2606229A1 (en) 1988-05-06
FR2606229B1 FR2606229B1 (en) 1990-05-04

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FR8615070A Expired - Fee Related FR2606229B1 (en) 1986-10-29 1986-10-29 CONTROL SYSTEM FOR A SINGLE PHASE ASYNCHRONOUS MOTOR FOR DRIVING AN OBJECT SUCH AS A STEERING BLADE TYPE STORE

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2808834A1 (en) * 2000-05-12 2001-11-16 Four Group M Control of motorized doors or shutters, uses time of connection in programming mode to select one from a number of predefined stored menus
AT409907B (en) * 1999-01-21 2002-12-27 Hans Hawlan Motor drive for moving or movable objects
CN102624318A (en) * 2012-04-23 2012-08-01 黑龙江大学 Online space vector state display device for monopole asynchronous motor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075773A5 (en) * 1970-01-15 1971-10-08 Griesser Ag
US3673479A (en) * 1971-04-30 1972-06-27 Barber Colman Co Single triac reversible motor control
DE2355566A1 (en) * 1973-11-07 1975-05-15 Walter Dr Schade Control cct. for reversible motors - has reversing switch replaced by two triacs with cross-coupled quenching capacitors
JPS5815489A (en) * 1981-07-22 1983-01-28 Hitachi Ltd Capacitor motor
WO1986004109A1 (en) * 1985-01-10 1986-07-17 V. Kann Rasmussen Industri A/S Electric control of venetian blind

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075773A5 (en) * 1970-01-15 1971-10-08 Griesser Ag
US3673479A (en) * 1971-04-30 1972-06-27 Barber Colman Co Single triac reversible motor control
DE2355566A1 (en) * 1973-11-07 1975-05-15 Walter Dr Schade Control cct. for reversible motors - has reversing switch replaced by two triacs with cross-coupled quenching capacitors
JPS5815489A (en) * 1981-07-22 1983-01-28 Hitachi Ltd Capacitor motor
WO1986004109A1 (en) * 1985-01-10 1986-07-17 V. Kann Rasmussen Industri A/S Electric control of venetian blind

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 88 (E-170)[1233], 12 avril 1983; & JP-A-58 15 489 (HITACHI SEISAKUSHO K.K.) 28-01-1983 *
TOUTE L'ELECTRONIQUE, no. 478, novembre 1982, pages 48-56, Paris, FR; J.N.ROUSSET: "Applications spéciales des photocoupleurs" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409907B (en) * 1999-01-21 2002-12-27 Hans Hawlan Motor drive for moving or movable objects
FR2808834A1 (en) * 2000-05-12 2001-11-16 Four Group M Control of motorized doors or shutters, uses time of connection in programming mode to select one from a number of predefined stored menus
EP1160415A1 (en) * 2000-05-12 2001-12-05 M Four Group Control device for motor driven darkening systems with program selection
CN102624318A (en) * 2012-04-23 2012-08-01 黑龙江大学 Online space vector state display device for monopole asynchronous motor
CN102624318B (en) * 2012-04-23 2014-03-26 黑龙江大学 Online space vector state display device for monopole asynchronous motor

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