DE19543131A1 - Regulating distance booster for piezoelectric and magnetostrictive power converters - Google Patents

Regulating distance booster for piezoelectric and magnetostrictive power converters

Info

Publication number
DE19543131A1
DE19543131A1 DE1995143131 DE19543131A DE19543131A1 DE 19543131 A1 DE19543131 A1 DE 19543131A1 DE 1995143131 DE1995143131 DE 1995143131 DE 19543131 A DE19543131 A DE 19543131A DE 19543131 A1 DE19543131 A1 DE 19543131A1
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DE
Germany
Prior art keywords
chamber
bellows
travel
piezoelectric
membrane
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.)
Withdrawn
Application number
DE1995143131
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German (de)
Inventor
Heinz Schmidt
Daniel J Dr Ing Jendritza
Hartmut Prof Dr Ing Janocha
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1995143131 priority Critical patent/DE19543131A1/en
Publication of DE19543131A1 publication Critical patent/DE19543131A1/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/04Constructional details
    • H02N2/043Mechanical transmission means, e.g. for stroke amplification

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  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

The incompressible liquid (7) in the hydraulic amplifier (1) is enclosed in an hermetically sealed chamber (3). The seal can be in the form of a bellows, preferably a metal bellows (4), a metal membrane or similar device. The joint between bellows or membrane and the chamber can be formed by gluing, soldering or welding, rendering the chamber absolutely leak free. The angle between the direction of the primary transducer stroke (9a) and the converted output stroke (9b) can be any angle between 0 deg. and 180 deg..

Description

Die Erfindung betrifft eine Einheit zur Übersetzung von Wegen piezoelektrischer oder ma­ gnetostriktiver Energiewandler als Stellglieder zur aktiven Schwingungsdämpfung, zum Ein­ satz in Hydraulikventilen, als Motorlager oder dergleichen.The invention relates to a unit for translating paths piezoelectric or ma gnetostrictive energy converter as actuators for active vibration damping, for on set in hydraulic valves, as engine mounts or the like.

Stellwegübersetzer, die mit einem hydraulischen Medium arbeiten, sind bereits bekannt (USP; Nr. 4,803,393) oder (EP; Nr. 0 477 400 A1). Diese bekannten hydraulischen Systeme wei­ sen eine Hydraulikkammer auf, die über O-Ringe abgedichtet wird. Sie erfordern einen Vor­ ratsbehälter zur Kompensation von auftretenden Ölverlusten.Travel range translators that work with a hydraulic medium are already known (USP; No. 4,803,393) or (EP; No. 0 477 400 A1). These known hydraulic systems white sen a hydraulic chamber, which is sealed by O-rings. They require a fore Storage tank to compensate for oil losses.

Der Erfindung liegt die Aufgabe zugrunde, einen Stellwegübersetzer der eingangs genannten Art zu entwickeln, der durch eine neue Art der Kammerabdichtung Ölverluste vermeidet, und so den Bauraum für zusätzliche Ölvorratsbehälter einspart.The invention is based on the object, a travel translator of the aforementioned To develop a type that avoids oil loss through a new type of chamber sealing, and this saves space for additional oil storage tanks.

Diese Aufgabe löst die Erfindung dadurch, daß sie statt O-Ringe Metallfaltenbälge 4 und Metallmembranen 2 einsetzt, die an den Dichtflächen 8 verklebt, verlötet oder verschweißt werden und somit eine leckagefreie Hydraulikkammer 3 garantieren. Diese Metallfaltenbälge und Membranen können so dimensioniert werden, daß der erforderliche Hub und Druck er­ reicht wird. Sie sind unter Heliumatmosphäre auf Dichtheit überprüft.The invention solves this problem by using metal bellows 4 and metal membranes 2 instead of O-rings, which are glued, soldered or welded to the sealing surfaces 8 and thus guarantee a leak-free hydraulic chamber 3 . These metal bellows and membranes can be dimensioned so that the required stroke and pressure is sufficient. They are checked for leaks in a helium atmosphere.

Nach dem hier beschriebenen Prinzip kann eine Wegrichtungsänderung zwischen Ein- (9a) und Ausgangssignal (9b) unter praktisch jedem Winkel erfolgen. Das dynamische Verhalten dieser Erfindung kann durch das übertragende Fluid, mit dem die Kammer gefüllt ist, auf den jeweiligen Anwendungsfall angepaßt werden.According to the principle described here, a change of direction between input ( 9 a) and output signal ( 9 b) can take place at practically any angle. The dynamic behavior of this invention can be adapted to the respective application by means of the transmitting fluid with which the chamber is filled.

Mögliche Realisierungen zeigen nachfolgende Beschreibungen anhand der Figuren. Dabei zeigt:Possible implementations are shown in the following descriptions based on the figures. It shows:

Fig. 1 Prinzipschaltbild eines hydraulischen Stellwegvergrößerers, wobei der Aus­ gangsweg (9b) in Richtung des eingeleiteten Weges (9a) ist. Fig. 1 schematic diagram of a hydraulic travel path enlarger, the output path ( 9 b) in the direction of the initiated path ( 9 a).

Fig. 2 Prinzipschaltbild eines hydraulischen Stellwegvergrößerers mit 90°-Wegum­ lenkung, der nach dem gleichen Prinzip wie der in Fig. 1 dargestellte Stell­ wegvergrößerer funktioniert. Fig. 2 Schematic diagram of a hydraulic actuation enlarger with 90 ° -Wegum steering, which works on the same principle as the actuating travel enlarger shown in Fig. 1.

Sehr wichtig ist es, wenn die Hydraulikkammer ohne Lufteinschluß mit Öl gefüllt ist, um eine maximale Steifigkeit zu erreichen. Die Kammer muß flexibel sein in Richtung des Ein- und Ausgangsweges und trotzdem volumenkonstant. Dies wird in der hier beschriebenen Erfin­ dung dadurch erreicht, daß die Kammer 3 auf Ein- und Ausgangsseite mit einer Metallmem­ brane 2 bzw. einem Metallfaltenbalg 4 verschlossen ist, wie in Fig. 1 dargestellt ist. Der elektromechanische Wandler 1 wirkt über eine Metallmembrane 2 auf eine eingeschlossene inkompressible Flüssigkeit 7. Die Flüssigkeit wird durch die Membrane 2 verdrängt und wird aufgrund ihrer Volumenkonstanz in den Metallfaltenbalg 4 hineingedrückt, wodurch dieser sich verlängert und den Abtriebskolben 5 anhebt. Über eine Schraubendruckfeder 6 kann das System so vorgespannt werden, daß nach Abschalten des Wandlers das System in den Aus­ gangszustand zurückgestellt wird.It is very important if the hydraulic chamber is filled with oil without air in order to achieve maximum rigidity. The chamber must be flexible in the direction of the entry and exit path and still constant in volume. This is achieved in the inven tion described here in that the chamber 3 on the input and output side with a Metallmem membrane 2 or a metal bellows 4 is closed, as shown in Fig. 1. The electromechanical transducer 1 acts on an enclosed incompressible liquid 7 via a metal membrane 2 . The liquid is displaced through the membrane 2 and, due to its constant volume, is pressed into the metal bellows 4 , thereby lengthening it and lifting the driven piston 5 . About a helical compression spring 6 , the system can be biased so that the system is reset to the initial state after switching off the converter.

Das Verhältnis aus der Querschnittsfläche der Metallmembrane 2 und der Querschnittsfläche des Metallfaltenbalgs 4 ergibt den Faktor, um den der Stellweg des elektromechanischen Wandlers 1 übersetzt wird.The ratio of the cross-sectional area of the metal diaphragm 2 and the cross-sectional area of the metal bellows 4 gives the factor by which the actuating path of the electromechanical transducer 1 is translated.

Bei den Ausführungsbeispielen in den Fig. 1 und 2, sind die Faltenbälge 4 jeweils in einem Führungsrohr 5 geführt, um ein Ausknicken der Faltenbälge zu verhindern. Die Führungsroh­ re 5 sind ihrerseits verschiebbar und bilden zugleich den Abtriebskolben 5.In the exemplary embodiments in FIGS . 1 and 2, the bellows 4 are each guided in a guide tube 5 in order to prevent the bellows from buckling. The guide tubes 5 are in turn displaceable and at the same time form the output piston 5 .

Claims (4)

1. Stellwegvergrößerer zur Übersetzung von Stellwegen piezoelektrischer und magnetostrik­ tiver Energiewandler oder dergleichen, dadurch gekennzeichnet, daß das Fluid in einer hermetisch abgedichteten Kammer eingeschlossen ist.1. travel enlarger for translation of travel piezoelectric and magnetostrive energy converter or the like, characterized in that the fluid is enclosed in a hermetically sealed chamber. 2. Stellwegvergrößerer nach einem der vorangehenden Ansprüche, dadurch gekenn­ zeichnet, daß die Hydraulikkammer mit einem Faltenbalg, vorzugsweise Metall-Falten­ balg (5), einer Metallmembran oder ähnlichem, abgeschlossen ist.2. travel enlarger according to one of the preceding claims, characterized in that the hydraulic chamber with a bellows, preferably metal bellows ( 5 ), a metal membrane or the like, is completed. 3. Stellwegvergrößerer nach einem der vorangehenden Ansprüche, dadurch gekenn­ zeichnet, daß die Verbindung zwischen Faltenbalg bzw. Membran und Kammer durch Verkleben, Verlöten oder Verschweißen der Dichtstelle erfolgt und somit die Kammer ab­ solut leckagefrei ist.3. travel enlarger according to one of the preceding claims, characterized is characterized by the connection between the bellows or membrane and chamber The sealing point is glued, soldered or welded and thus the chamber off is absolutely leak-free. 4. Stellwegvergrößerer nach einem der vorangehenden Ansprüche, dadurch gekenn­ zeichnet, daß zwischen der Richtung des primären Wandlerhubs und des übersetzten Ausgangshubs ein beliebiger Winkel zwischen 0° und 180° liegt4. travel enlarger according to one of the preceding claims, characterized records that between the direction of the primary converter stroke and the translated Starting strokes are any angle between 0 ° and 180 °
DE1995143131 1995-11-18 1995-11-18 Regulating distance booster for piezoelectric and magnetostrictive power converters Withdrawn DE19543131A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995143131 DE19543131A1 (en) 1995-11-18 1995-11-18 Regulating distance booster for piezoelectric and magnetostrictive power converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995143131 DE19543131A1 (en) 1995-11-18 1995-11-18 Regulating distance booster for piezoelectric and magnetostrictive power converters

Publications (1)

Publication Number Publication Date
DE19543131A1 true DE19543131A1 (en) 1996-10-02

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DE1995143131 Withdrawn DE19543131A1 (en) 1995-11-18 1995-11-18 Regulating distance booster for piezoelectric and magnetostrictive power converters

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DE (1) DE19543131A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19714292A1 (en) * 1997-04-07 1998-10-15 Siemens Ag Device for transferring piezoelectric actuator deflection e.g. for motor vehicle fuel injection valve
FR2765634A1 (en) * 1997-07-01 1999-01-08 Siemens Ag COMPENSATING ELEMENT OF LENGTH VARIATIONS OF AN OBJECT UNDER THE EFFECT OF TEMPERATURE
DE19936732A1 (en) * 1999-08-06 2001-02-15 Deutsch Zentr Luft & Raumfahrt Bar shaped element of changeable length with an integrated piezoelectric actuator comprises at least one additional piezoelectric actuator, two bars arranged in series and displacement amplifier
US6194812B1 (en) 1996-09-30 2001-02-27 Siemens Aktiengesellschaft Controller with an actuator of controllable length and device for transmitting the deflection of an actuator
WO2002084119A1 (en) * 2001-04-10 2002-10-24 Newlands Technology Limited Actuator with hydraulics
WO2012045819A1 (en) * 2010-10-08 2012-04-12 Epcos Ag Arrangement of a piezo actuator and method for operating a piezo actuator
CN103078552A (en) * 2013-01-07 2013-05-01 大连理工大学 Harmonic motor
DE102011121423A1 (en) * 2011-12-17 2013-06-20 Audi Ag Semi-active articulated support for selectively coupling or decoupling of stabilizer and wheel-guiding element of vehicle, has piezoelectric element which acts on push rod in coupled state by clamping element
DE102014219604A1 (en) * 2014-09-26 2016-03-31 Siemens Aktiengesellschaft Lifting system, electrical testing method, vibration damper and machine unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
EP0477400A1 (en) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Device for compensating the tolerance in the lift direction of the displacement transformer of a piezoelectric actuator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
EP0477400A1 (en) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Device for compensating the tolerance in the lift direction of the displacement transformer of a piezoelectric actuator

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6194812B1 (en) 1996-09-30 2001-02-27 Siemens Aktiengesellschaft Controller with an actuator of controllable length and device for transmitting the deflection of an actuator
DE19714292A1 (en) * 1997-04-07 1998-10-15 Siemens Ag Device for transferring piezoelectric actuator deflection e.g. for motor vehicle fuel injection valve
DE19714292C2 (en) * 1997-04-07 2000-10-26 Siemens Ag Device for transmitting a deflection of an actuator
FR2765634A1 (en) * 1997-07-01 1999-01-08 Siemens Ag COMPENSATING ELEMENT OF LENGTH VARIATIONS OF AN OBJECT UNDER THE EFFECT OF TEMPERATURE
DE19936732A1 (en) * 1999-08-06 2001-02-15 Deutsch Zentr Luft & Raumfahrt Bar shaped element of changeable length with an integrated piezoelectric actuator comprises at least one additional piezoelectric actuator, two bars arranged in series and displacement amplifier
DE19936732C2 (en) * 1999-08-06 2001-05-31 Deutsch Zentr Luft & Raumfahrt Length-variable rod-shaped element with piezo actuator
WO2002084119A1 (en) * 2001-04-10 2002-10-24 Newlands Technology Limited Actuator with hydraulics
WO2012045819A1 (en) * 2010-10-08 2012-04-12 Epcos Ag Arrangement of a piezo actuator and method for operating a piezo actuator
DE102011121423A1 (en) * 2011-12-17 2013-06-20 Audi Ag Semi-active articulated support for selectively coupling or decoupling of stabilizer and wheel-guiding element of vehicle, has piezoelectric element which acts on push rod in coupled state by clamping element
DE102011121423B4 (en) * 2011-12-17 2018-11-15 Audi Ag Semi-active pendulum support
CN103078552A (en) * 2013-01-07 2013-05-01 大连理工大学 Harmonic motor
CN103078552B (en) * 2013-01-07 2014-12-24 大连理工大学 Harmonic motor
DE102014219604A1 (en) * 2014-09-26 2016-03-31 Siemens Aktiengesellschaft Lifting system, electrical testing method, vibration damper and machine unit

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