FI90374C - Proportional Mechatronic actuator - Google Patents

Proportional Mechatronic actuator Download PDF

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Publication number
FI90374C
FI90374C FI911256A FI911256A FI90374C FI 90374 C FI90374 C FI 90374C FI 911256 A FI911256 A FI 911256A FI 911256 A FI911256 A FI 911256A FI 90374 C FI90374 C FI 90374C
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FI
Finland
Prior art keywords
spindle
actuator
control
positioner
pressure
Prior art date
Application number
FI911256A
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Finnish (fi)
Swedish (sv)
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FI911256A (en
FI90374B (en
FI911256A0 (en
Inventor
Ilkka Ahonoja
Markku Luomaranta
Original Assignee
Nestepaine Ab Oy
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Application filed by Nestepaine Ab Oy filed Critical Nestepaine Ab Oy
Priority to FI911256A priority Critical patent/FI90374C/en
Publication of FI911256A0 publication Critical patent/FI911256A0/en
Priority to PCT/FI1992/000067 priority patent/WO1992016756A1/en
Priority to AU13426/92A priority patent/AU1342692A/en
Priority to DE69206610T priority patent/DE69206610T2/en
Priority to AT92906082T priority patent/ATE131256T1/en
Priority to EP92906082A priority patent/EP0577628B1/en
Publication of FI911256A publication Critical patent/FI911256A/en
Publication of FI90374B publication Critical patent/FI90374B/en
Application granted granted Critical
Publication of FI90374C publication Critical patent/FI90374C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B2013/0409—Position sensing or feedback of the valve member

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Position Or Direction (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Networks Using Active Elements (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a proportional mechanical actuator for a device linearly controllable by a pressure fluid, the actuator being intended to be connected between a pressure source (P) and the device (60) to be controlled, comprising a proportional magnet (1); a pilot control spindle (3) arranged to be movable in a pilot control body (5) by the proportional magnet (1) for opening and closing different pressure fluid conduits (A, B, P, T); a positioner (11) for the device (60), the positioner (11) being linearly controllable in two directions by the pilot control spindle (3) so that the spindle (3) tends to keep the positioner (11) at each particular moment in a predetermined position corresonding to a control signal supplied by an electric control unit (70) of the actuator so as to linearly control the device (60) through a control spindle (14) or other similar external coupling device of the actuator. A position sensor (13) electrically sensing the position of the positioner (11) is provided in a substantially cylindrical means (12) defining a space where the positioner (11) moves, the position sensor comprising a winding fitted around the means (12).

Description

1 S03741 S0374

Proportionaalinen mekatroninen toimilaiteProportional Mechatronic actuator

KeksintO koskee proportionaalista mekatronista toi-milaitetta painevåliaineella lineaarisesti ohjattavaa lai-5 tetta vårten, joka toimilaite on tarkoitettu liitett&vaksi painelShteen ja ohjattavan laitteen vSliin, kasittaen pro-portionaalimagneetin; esiohjauskaran, joka on jarjestetty esiohjausrungossa proportionaalimagneetin avulla liikutel-tavaksi eri painevSliainelikanavien avaamiseksi ja sulke-10 miseksi; ja asennoitinelimen ohjattavaa laitetta vårten, joka elin on ohjattavissa lineaarisesti kaksisuuntaisesti esiohjauskaran avulla siten, etta esiohjauskara pyrkii pitamaan asennoitinelimen kullakin hetkelia tietyssa, toi-milaitteen sMhkOisen ohjausyksikOn antamaa ohjaussignaalia 15 vastaavassa asemassa, lineaarisen ohjauksen aikaansaami-seksi ohjattavalle laitteelle ohjauskaran tai vastaavan toimilaitteen ulkoisen kytkentaiaitteen kautta.The invention relates to a proportional mechatronic actuator for a device which is linearly controlled by a pressure medium, which actuator is intended to be connected to a pressure source and a controlled device, comprising a proportional magnet; a pre-guide spindle arranged in the pre-guide body to be moved by means of a proportional magnet to open and close the different pressure medium channels; and a controllable device for the positioning member, the member being linearly bi-directionally controlled by the pre-control spindle such that the pre-control spindle tends to hold the positioning member at each instant .

Tamantyyppinen laite on tunnettu esimerkiksi EP-patenttijulkaisusta 0 151 174, jossa kuvatussa laitteessa 20 esiohjauskara ja asennoitinelin ovat mekaanisessa koske-tuksessa toisiinsa, asennoitinelimen asennon maarityksen ollessa epatarkkaa ja sen reagoinnin ollessa suhteellisen hidasta.A device of this type is known, for example, from EP 0 151 174, in which in the described device 20 the pre-guide spindle and the positioning member are in mechanical contact with each other, the positioning of the positioning member being inaccurate and its response relatively slow.

Esilia olevan keksinnOn tarkoituksena on tunnetussa ; 25 tekniikassa esiintyvien epakohtien poistaminen. Tahan paa-maaraan paastaan keksinnOn mukaisella toimilaitteella, jolle on tunnusomaista, etta asennoitinelimen liikkumati-lan rajoittamaan olennaisesti sylinterin muotoiseen eli-meen on jarjestetty sahkOisesti asennoitinelimen aseman : 30 tunnistava asema-anturi, joka muodostuu elimen ymparille sovitetusta kaamityksesta.The object of the present invention is known in the art; 25 Elimination of technical shortcomings. The actuator according to the invention, characterized in that a substantially cylindrical member limited by the movement space of the positioning member, is electrically arranged with a actuator according to the invention, a position sensor consisting of a scraper arranged around the member.

KeksinnOn mukainen venttiili on kytkettavissa mihin tahansa venttiiliin, erityisen hyvin se soveltuu esimerkiksi mobilesuuntaventtiilin ohjaukseen.The valve according to the invention can be connected to any valve, it is particularly well suited for controlling, for example, a mobile directional valve.

35 Seuraavassa keksintoa selitetaan lahemmin oheisiin 2 90374 piirustuksiin viitaten, joissa kuviot la, 2a, 3a ja 4a esittavat keksinnOn mukais-ta toimilaitetta slvukuvana ja osittain leikattuna er i toiminta-asennolssa, ja 5 kuviot lb, 2b, 3b ja 4b edellisissa kuvioissa esi- tettyihin toiminta-asentoihin liittyvia painelinjojen peittokuvioita.The invention will now be described in more detail with reference to the accompanying drawings 2 90374, in which Figures 1a, 2a, 3a and 4a show the actuator according to the invention in a plan view and partly sectioned in a different operating position, and Figures 1b, 2b, 3b and 4b in the previous figures. pressure line overlap patterns associated with the specified operating positions.

Kuvioissa la, 2a, 3a ja 4a esitetty proportionaali-nen mekatroninen toimilaite kasittaa proportionaalimagnee-10 tin 1, esiohjausyksikOn 30, asennoitinyksikOn 40, paineva-liaineen syOttO- ja paluuosan 50 ja elektroniikkayksikOn 70, jotka kaikki on liitetty kiinteåsti toisiinsa kompak-tiksi toimilaitekokonaisuudeksi.The proportional mechatronic actuator shown in Figures 1a, 2a, 3a and 4a handles the proportional magnet 1, the pre-control unit 30, the positioner unit 40, the pressure medium supply and return section 50 and the electronics unit 70, all of which are integrally connected in a compact manner.

EsiohjausyksikkO 30 kasittaa rungon 5, jossa on 15 sylinterimainen poraus 6, johon on sovitettu pystysuunnas-sa liikkuva esiohjauskara 3. Karassa 3 on ylempi rengas-mainen olake 7, alempi rengasmainen olake 8 ja niiden va-linen rengasmainen kanava 9. Poraukseen 6 esiohjauskaran 3 alapuolelle on asennettu jousi 4, jonka jénnitysta vastaan 20 proportionaalimagneetin 1 kara 2 liikuttaa esiohjauskaraa 3. Rungossa 5 on lisaksi poraukseen 6 ja painevMliaineen sybttb- ja paluuosaan 50 yhteydessa olevat painevSliaine-kanava P ja paluukanava T painevSliainetta vårten. SyttttO-ja paluuosa 50 sijaitsee vålittiimasti esiohjausyksikttn 30 ; 25 alapuolella.The pre-control unit 30 feeds a body 5 with a cylindrical bore 6 15 in which a vertically movable pre-guide spindle 3 is arranged. The spindle 3 has an upper annular shoulder 7, a lower annular shoulder 8 and an annular channel 9 therebetween. A spring 4 is mounted below, against the tension of which the mandrel 2 of the proportional magnet 20 moves the pre-guide spindle 3. The body 5 additionally has a pressure medium channel P and a return channel T in connection with the bore 6 and the pressure medium sybttb and return part 50. The ignition and return section 50 is located temporarily in the pre-control unit 30; 25 below.

AsennoitinyksikkO 40 kasittaa koteion 10, joka on kiinnitetty esiohjausyksikOn 30 kylkeen. Koteion 10 lapi on tehty pyOrahdyssymmetrinen ontelo, jonka toiseen pååhan sen sisalle esiohjausyksikOn 30 puolelle on kiinnitetty : 30 epamagneettista materiaalia oleva sylinteriputki 12. Sy-linteriputken 12 ymparille sen ulkopintaan on upotettu kuparilankakaamitys eli kela 13, ja sylinteriputken 12 sisalle sen sisapintaa vasten tiivistetysti liukuvasti on sovitettu asennoitinelin 11, jonka siihen paahan, joka 35 suuntautuu esiohjausyksikOsta 30 poispain, on kiinnitetty I! 3 90374 ohjauskara 14, Jolla ohjataan asennoitinyksikdn 40 tahan paahån kiinnitettåvaa venttiilia 60. Koteloon 10 on onte-lon vastaavaan paahan sen sisalle on asennettu jousijar-jestely 15-18, joka pyrkii keskittémaan asennoitinelimen 5 11, sita jompaankumpaan suuntaan liikutettaessa. Kotelo 10 on kiinnitetty esiohjausrungon 5 kylkeen siten, ettå esi-ohjauskaran 3 ja asennoitinelimen 11 akselit ovat kohti-suorassa toisiaan vastaan. Sylinteriputki 12 muodostaa puolestaan sisaansa toisen ontelon, jonka asennoitinelin 10 11 jakaa kahteen painetilaan A1 ja B1, joista toinen tila A1 vaikuttaa asennoitinelimen 11 etupuolelle (vasemmalle puolelle) ja toinen tila B1 asennoitinelimen 11 takapuolel-le (oikealle puolelle). Painetila A1 on yhteydessa esioh-jausyksikdn 30 poraukseen 6 rungon 5 lapi tehdyn kanavan A 15 valityksella ja painetila B1 koteloon 10 ja runkoon 5 tehdyn kanavan B valityksella. Painetila B1 on eristetty tii-visteellå 19 siita koteion 10 ontelon osasta, joka sisai-taa jousijarjestelyn 15-18.The positioner unit 40 mounts a housing 10 attached to the side of the pre-control unit 30. The housing 10 is provided with a rotationally symmetrical cavity, at the other end of which is attached to the side of the pre-control unit 30: a cylinder tube 12 of non-magnetic material 12. A a fitted positioning member 11, which is attached to the head 35 which is directed away from the pre-control unit 30, I! 3 90374 a guide spindle 14 for controlling a valve 60 to be attached to any head of the positioner unit 40. A housing arrangement 15-18 is mounted inside the housing 10 in the corresponding head of the cavity, which tends to concentrate when the positioner member 5 11 is moved in either direction. The housing 10 is attached to the side of the pre-guide body 5 so that the axes of the pre-guide spindle 3 and the positioning member 11 are perpendicular to each other. The cylinder tube 12, in turn, forms a second cavity which is divided by the positioning member 10 11 into two pressure states A1 and B1, one state A1 acting in front of the positioning member 11 (left side) and the other state B1 acting on the back side (right side) of the positioning member 11. The pressure space A1 is connected to the bore 6 of the pre-control unit 30 by the channel A 15 made of the body 5 and the pressure space B1 by the channel B made to the housing 10 and the body 5. The pressure space B1 is insulated by a seal 19 from the part of the cavity of the housing 10 which contains the spring arrangement 15-18.

Edelia kuvatut sylinteriputki 12, sita ymparOiva 20 kela 13, kelasydamena toimiva asennoitinelin 11 ja tarvit-tava elektroniikkayksikdssa 70 oleva elektroniikka, johon kela 13 on liitetty sahkOisesti, muodostavat yhdessa koko-naisuuden, jolla mitataan mantamåisesti toimivan asennoitinelimen 11 asemaa. Kela 13 ja elin 11 sijoittautuvat ; 25 toisiinsa nahden siten, etta kelan 13 sisalle jaavan eli-men 11 osuuden pituus muuttuu elimen 11 aseman mukaisesti. Mittausalueella toimittaessa kutakin elimen 11 asemaa vas-taa siis tietty pituus kelan 13 sisaan tyOntynytta elinta 11. Kun elin 11 on valmistettu materiaalista, johon hel-• : 30 posti syntyy pyiirrevirtoja, muuttuu kelan 13 induktanssi jatkuvasti aseman funktiona. Syntyvien pyOrrevirtojen voi-makkuuteen - ja siten myOs anturijarjestelyn herkkyyteen -voidaan vaikuttaa mm. ohjaamalla ja voimistamalla halu-tulla tavalla kelan 13 magneettikentan voimaviivojen kul-35 kua.The above-described cylinder tube 12, the surrounding coil 13, the coil core positioning member 11 and the necessary electronics in the electronics unit 70 to which the coil 13 is electrically connected together form a whole for measuring the position of the grounding positioning member 11. Coil 13 and body 11 are located; 25 relative to each other so that the length of the portion of the member 11 dividing inside the coil 13 changes according to the position of the member 11. Thus, when operating in the measuring range, each position of the member 11 corresponds to a certain length of the member 11 inserted inside the coil 13. When the member 11 is made of a material in which circular currents are easily generated, the inductance of the coil 13 changes continuously as a function of position. The intensity of the resulting circular currents - and thus the sensitivity of the myOs sensor arrangement - can be affected by e.g. controlling and amplifying in a desired manner the passage of the magnetic field lines of the coil 13.

4 y 0 3744 y 0 374

Esilia olevassa keksinnOssa kelan 13 kulloinenkln Induktanssi - ja siis elimen 11 asema - mitataan ja muute-taan pulssinpituusmoduloiduksi signaaliksi mikroprosesso-rin avulla.In the present invention, the current inductance of the coil 13 - and thus the position of the member 11 - is measured and converted into a pulse length modulated signal by a microprocessor.

5 Toimilaitekokonaisuuden toiminta on seuraava:5 The operation of the actuator assembly is as follows:

Kuviossa la on esltetty laitteen lepotila. Kun pro-portionaalimagneetti 1 on virraton, pitaa palautusjousi 4 esiohjauskaran 3 ja magneetin 1 karan 2 ylimmSssa aari-asennossa, ns. turva-asennossa (kuvio lb). TailOln esioh-10 jauskaran 3 olake 8 pitaa painevaiiainekanavan P suljettu-na, mutta kanava A seka kanava B ovat yhteydessa paluudl-jykanavaan T. Asennoitinelin 11 on keskitysjousen 15 vai-kutuksesta keskiasennossaan ja sita voidaan liikuttaa roe-kaanisesti ulkoisen voiman vaikutuksesta.Figure 1a shows the sleep state of the device. When the proportional magnet 1 is de-energized, the return spring 4 holds the pre-guide spindle 3 and the spindle 2 of the magnet 1 in the uppermost position, the so-called in the safety position (Figure 1b). The shoulder 8 of the TailOl pre-control 10 spindle 3 keeps the pressure medium channel P closed, but the channel A and the channel B are connected to the return channel T. The positioning member 11 is in its central position under the action of the centering spring 15 and can be moved roe mechanically by external force.

15 Kuvioissa 2a, 3a ja 4b laite on esltetty toimin- tatilassa. Kuviossa 3a magneetille 1 tuodaan virtaa, jol-loin se tyOntaa esiohjauskaran 3 ns. keskiasentoon (kuvio 3b), jossa olake 7 estaa kanavan A ja paluukanavan T vaii-sen virtauksen, mutta jolloin painevaiiainekanavan P ja 20 kanavan B valinen virtaus on mahdollista. Asento tunniste-taan edelia kuvatulla, elimen 11 ja mikroprosessorin ka-sitteleman signaalin avulla. Esiohjauskara 3 jaa tahan asentoon odottamaan ohjaussignaalia, ja se voi liikkua joko alaspain (kuvio 4b) tai ylttspain (kuvio 2b), ulkoisen ; 25 ohjaussignaalin ja asennoitinelimen 11 antaman ohjaussig-naalin vaiisesta erosta riippuen.In Figures 2a, 3a and 4b, the device is shown in an operating state. In Fig. 3a, a current is applied to the magnet 1, whereby it pushes the so-called spindle 3. to the middle position (Fig. 3b), where the shoulder 7 prevents the silent flow of the channel A and the return channel T, but whereby a flow between the pressure medium channel P and the channel B is possible. The position is identified by the signal described above, processed by the member 11 and the microprocessor. The pre-control spindle 3 divides into any position to wait for the control signal, and can move either down (Fig. 4b) or reach (Fig. 2b), external; 25 depending on the silent difference between the control signal and the control signal given by the positioning member 11.

Kuvion 2a mukaisesti esiohjauskaran 3 liikkuessa yliSspain mainitun ulkoisen ohjaussignaalin ja asennoitinelimen 11 antaman asemasignaalin eron vuoksi, yhdistyy 30 painevSliainekanava P kanaviin A ja B. Olake 7 pitaa pa-luuOljykanavan T suljettuna (kuvio 2b). Asennoitinelin 11 liikkuu oikealle painetilojen A1 ja B1 pinta-alojen eron vuoksi, kunnes kelan 13 antama signaali vastaa ohjaussignaalin suuruutta, jolloin esiohjauskara 3 palautuu keski-35 asentoon (kuvio 3b). Asennoitinelin 11 jaa tahan uuteen li 5 90374 asemaan niin kauan kuin kyseiseen asemaan verrannollista ohjaussignaalia pidetaan ylia. Ohjaussignaalin poistuessa syntyva signaaliero siirtaa esiohjauskaran 3 keskiasennos-ta (kuvio 3b) kuvion 4a asentoon, jolloin painevéliaineka-5 nava P yhdistyy kanavaan B ja paluukanava T kanavaan A. Asennoltinelin 11 liikkuu vasemmalle, kunnes kelan 13 an-tama slgnaall vastaa kesklasennon signaalin suuruutta, jolloin esiohjauskara 3 palautuu keskiasentoon (kuvio 3b).According to Fig. 2a, as the pre-control spindle 3 moves over the spain due to the difference between said external control signal and the position signal from the positioning member 11, the pressure medium channel P connects to the channels A and B. The shoulder 7 keeps the return oil channel T closed (Fig. 2b). The positioning member 11 moves to the right due to the difference in the areas of the pressure states A1 and B1 until the signal given by the coil 13 corresponds to the magnitude of the control signal, whereby the pre-control spindle 3 returns to the middle position (Fig. 3b). The positioning member 11 divides into any new position 90374 as long as the control signal proportional to that position is considered to be exceeded. The signal difference generated when the control signal exits moves the pre-control spindle 3 from the center position (Fig. 3b) to the position of Fig. 4a, whereby the pressure medium terminal P connects to the channel B and the return channel T to the channel A. The positioning member 11 moves to the left until the coil 13 whereby the pre-guide spindle 3 returns to the middle position (Fig. 3b).

Esiohjauskaran 3 liikkuessa alaspSin, kuvion 4a 10 mukaisesti, ulkoisen ohjaussignaalin ja asennoitinelimen 11 antaman asemasignaalin eron vuoksi, yhdistyy painevSli-ainekanava P kanavaan B ja paluuttljykanava T kanavaan A (kuvio 4b). Asennoitinelin 11 liikkuu vasemmalle paineti-lojen A1 ja B1 paine-eron vuoksi, kunnes kelan 13 antama 15 signaali vastaa ohjaussignaalin suuruutta, jolloin esiohjauskara 3 palautuu keskiasentoon (kuvio 3b). Asennoitinelin 11 jaa tåhån uuteen asemaan niin kauan kuin kyseiseen asemaan verrannollista ohjaussignaalia pidetaan ylia. Ohjaussignaalin poistuessa syntyva signaaliero siirtaa esi-20 ohjauskaran 3 keskiasennosta (kuvio 3b) kuvion 2a asentoon, jolloin painevaiiainekanava P yhdistyy kanaviin A ja B. Olake 7 pitaa paluukanavan T suljettuna. Asennoitinelin 11 liikkuu oikealle painetilojen A1 ja B1 pinta-alojen eron vuoksi, kunnes kelan 13 antama signaali vastaa keskiasen-! 25 non signaalin suuruutta, jolloin esiohjauskara 3 palautuu keskiasentoon (kuvio 3b).As the pre-control spindle 3 moves downwards, according to Fig. 4a 10, due to the difference between the external control signal and the position signal from the positioning member 11, the pressure medium channel P connects to the channel B and the return oil channel T to the channel A (Fig. 4b). The positioning member 11 moves to the left due to the pressure difference of the pressure states A1 and B1 until the signal 15 provided by the coil 13 corresponds to the magnitude of the control signal, whereby the pre-control spindle 3 returns to the middle position (Fig. 3b). The positioning member 11 divides into this new position as long as the control signal proportional to that position is considered to be exceeded. The signal difference generated when the control signal exits moves the pre-20 control spindle 3 from the center position (Fig. 3b) to the position of Fig. 2a, whereby the pressure medium channel P connects to the channels A and B. The shoulder 7 keeps the return channel T closed. The positioning member 11 moves to the right due to the difference in the areas of the pressure states A1 and B1 until the signal given by the coil 13 corresponds to the middle position. 25 non signal size, whereby the pre-control spindle 3 returns to the middle position (Fig. 3b).

Keksinndn mukaiselle toimilaitteelle on ominaista, etta se toimii tilavuusvirtaohjatusti, niin etta sen ol-lessa kytkettyna paineiahteeseen siina vallitsee jatkuvas-‘ 30 ti sama paine kuin paineiahteessa. Toisin sanoen paineiah- teen koko paine on ohjauksen alkaessa vaiittfimasti kaytet-tavissa asennoitinelimen 11 liikuttamiseen.The actuator according to the invention is characterized in that it operates in a volumetric flow-controlled manner, so that when it is connected to the pressure vessel there is a constant pressure therein. In other words, at the beginning of the control, the entire pressure of the pressure supercharger can be used silently to move the positioning member 11.

Jos tilavuusvirtaohjausta verrataan jousta vastaan vaikuttavaan paineohjaukseen, saavutetaan silia huomatta-35 vaa toiminnallista etua. Paineohjatulle laitteelle on omi- 6 90374 naista, etta tietyn alkuohjausaseman saavuttamiseksi tar-vittava ohjauspaine voi olla esim. neljasosa vaadittavasta loppupaineesta (alkupaine esim. 6 bar, loppupaine 25 bar); tamS aiheuttaa tunnetusti kylmaiia Oljylia viskositeetista 5 johtuvia kayttbhairiOita, ja jopa laitteen toimimatto-muutta.If the volume flow control is compared to the pressure control against the spring, a considerable 355 functional advantage is achieved. The pressure-controlled device is characterized in that the control pressure required to reach a certain initial control position can be, for example, a quarter of the required final pressure (initial pressure e.g. 6 bar, final pressure 25 bar); tamS is known to cause cold operating conditions due to viscosity 5, and even inoperability of the device.

lili

Claims (5)

1. Proportionellt mekatroniskt mandvreringsorgan fOr en anordning som styrs lineårt med hjålp av ett medi- 5 um, vilket manOvreringsorgan år avsett att kopplas mellan en tryckkålla (P) och anordningen (60) som skall styras, omfattande: - en proportionalmagnet (1), - en forstyrspindel (3) som år anordnad att fOr-10 flyttas i en fOrstyrstomme (5) med hjalp av proportionalmagneten (1) fOr att Oppna eller sluta olika tryckmedie-kanaler (A, B, P, T), ett stållorgan (11) fOr anordningen (60) som skall styras, vilket organ (11) kan med hjålp av fOrstyr-15 spindeln (3) styras lineårt i två riktningar, så att fOr-styrspindeln (3) stråvar att i varje stund hålla ståll-organet (11) i en viss position som motsvarar styrsignalen som manOvreringsorganets elektriska styrenhet (70) avger, fOr att åstadkomma lineår styrning fOr anordningen (60) 20 som skall styras via en styrspindel (14) eller liknande kopplingsanordning utanfOr manOvreringsorganet, kånnetecknat dårav att i ett våsentli-gen cylindriskt organ (12) som avgrånsas av stållorganets (11) spelrum har anordnats en positionsgivare (13) som ; 25 avkånner stållorganets (11) position elektriskt, vilken positionsgivare (13) utgttrs av en omkring organet (12) anordnad lindning.A proportionally mechatronic maneuvering means for a device which is controlled linearly with the aid of a medium, said actuator being intended to be coupled between a pressure source (P) and the device (60) to be controlled, comprising: - a proportional magnet (1), - a guide spindle (3) arranged to be moved in a guide frame (5) with the aid of the proportional magnet (1) to open or close various pressure media channels (A, B, P, T), a steel member (11). ) for the device (60) to be controlled, which means (11) can be guided linearly in two directions by means of the guide spindle (3), so that the feed guide spindle (3) strives to hold the steel member (3) at each moment. 11) in a certain position corresponding to the control signal emitted by the actuator's electric control unit (70), to provide linear year control for the device (60) to be controlled via a control spindle (14) or similar coupling device outside the actuator, characterized in that in a a central cylindrical member (12) defined by the clearance of the steel member (11) has provided a position sensor (13) which; 25, the position of the steel member (11) senses electrically, which position sensor (13) is provided by a winding arranged around the member (12). 2. ManOvreringsorgan enligt patentkrav 1, k å n -netecknat dårav att positionsgivaren (13) år in- 30 båddad i yttre ytan av ett omkring stållorganet (11) an-ordnat cylinderrOr (12).2. An actuator according to claim 1, characterized in that the position sensor (13) is embedded in the outer surface of a cylinder tube (12) arranged around the steel member (11). 3. ManOvreringsorgan enligt patentkrav 2, k å n -netecknat dårav att cylinder rtjret (12) år av ett omagnetiskt material. 35 ίο 903743. An actuator according to claim 2, characterized in that the cylinder earth (12) is made of an non-magnetic material. 35 or 90374 4. ManOvreringsorgan enligt patentkrav 2 eller 3, kannetecknat darav att stailorganets (11) hOl-je (10) år fast bredvid forstyrstommen (5), så att forstyr spindelns (3) och stailorganets (11) axlar ar vasent-5 ligen vinkelrata mot varandra, och att en hålighet som cylinderrOret (12) bildar uppvisar på stailorganets (11) fram- och baksida verkande tryckrum (A1, B1), vilka via en tryckmediekanal (A, B) åt gången står i forbindelse med det utrymme dar fOrstyrspindeln (3) rOr sig och som står i 10 forbindelse (P) till tryckkailan (P). Il4. An actuator according to claim 2 or 3, characterized in that the housing (10) of the styling member (11) is fixed next to the guide frame (5), so that the axes of the spindle (3) and the styling member (11) are substantially angular to the each other, and that a cavity formed by the cylinder tube (12) has on the front and rear side operating pressures (A1, B1) of the styling member (11) which are connected at one time via a pressure medium channel (A, B) to the space provided by the guide stem ( 3) moves and is in communication (P) to the pressure plate (P). Il
FI911256A 1991-03-13 1991-03-13 Proportional Mechatronic actuator FI90374C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI911256A FI90374C (en) 1991-03-13 1991-03-13 Proportional Mechatronic actuator
PCT/FI1992/000067 WO1992016756A1 (en) 1991-03-13 1992-03-11 Proportional mechano-electronic actuator means
AU13426/92A AU1342692A (en) 1991-03-13 1992-03-11 Proportional mechano-electronic actuator means
DE69206610T DE69206610T2 (en) 1991-03-13 1992-03-11 PROPORTIONAL ELECTRONIC-MECHANICAL ACTUATOR.
AT92906082T ATE131256T1 (en) 1991-03-13 1992-03-11 PROPORTIONAL ELECTRONIC-MECHANICAL ACTUATING DEVICE.
EP92906082A EP0577628B1 (en) 1991-03-13 1992-03-11 Proportional mechano-electronic actuator means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911256 1991-03-13
FI911256A FI90374C (en) 1991-03-13 1991-03-13 Proportional Mechatronic actuator

Publications (4)

Publication Number Publication Date
FI911256A0 FI911256A0 (en) 1991-03-13
FI911256A FI911256A (en) 1992-09-14
FI90374B FI90374B (en) 1993-10-15
FI90374C true FI90374C (en) 1994-01-25

Family

ID=8532114

Family Applications (1)

Application Number Title Priority Date Filing Date
FI911256A FI90374C (en) 1991-03-13 1991-03-13 Proportional Mechatronic actuator

Country Status (6)

Country Link
EP (1) EP0577628B1 (en)
AT (1) ATE131256T1 (en)
AU (1) AU1342692A (en)
DE (1) DE69206610T2 (en)
FI (1) FI90374C (en)
WO (1) WO1992016756A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0886380A (en) * 1994-09-13 1996-04-02 Smc Corp Pilot valve
JP3468457B2 (en) * 1999-07-14 2003-11-17 Ｓｍｃ株式会社 Switching valve with position detection function
JP3696075B2 (en) * 2000-10-06 2005-09-14 Ｓｍｃ株式会社 Switching valve with magnetic sensor
CN110173478B (en) * 2019-06-05 2020-05-05 浙江厚达智能科技股份有限公司 Actuating mechanism for traditional Chinese medicine production

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674232A (en) * 1952-05-28 1954-04-06 Bendix Aviat Corp Latching mechanism
US3136224A (en) * 1960-11-04 1964-06-09 North American Aviation Inc Dual flow-synchronized electrohydraulic servo
US3279323A (en) * 1964-09-28 1966-10-18 North American Aviation Inc Electrohydraulic actuator
DE2904573C2 (en) * 1979-02-07 1983-01-27 Mannesmann Rexroth GmbH, 8770 Lohr Hydraulic valve operated by an adjustable solenoid
US4569273A (en) * 1983-07-18 1986-02-11 Dynex/Rivett Inc. Three-way proportional valve
CH675752A5 (en) * 1988-10-25 1990-10-31 Sulzer Ag

Also Published As

Publication number Publication date
FI911256A (en) 1992-09-14
DE69206610D1 (en) 1996-01-18
FI90374B (en) 1993-10-15
WO1992016756A1 (en) 1992-10-01
FI911256A0 (en) 1991-03-13
AU1342692A (en) 1992-10-21
EP0577628B1 (en) 1995-12-06
EP0577628A1 (en) 1994-01-12
DE69206610T2 (en) 1996-05-23
ATE131256T1 (en) 1995-12-15

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