EP1116283A1 - Procede de compensation d'ondes sonores et dispositif correspondant - Google Patents

Procede de compensation d'ondes sonores et dispositif correspondant

Info

Publication number
EP1116283A1
EP1116283A1 EP99969535A EP99969535A EP1116283A1 EP 1116283 A1 EP1116283 A1 EP 1116283A1 EP 99969535 A EP99969535 A EP 99969535A EP 99969535 A EP99969535 A EP 99969535A EP 1116283 A1 EP1116283 A1 EP 1116283A1
Authority
EP
European Patent Office
Prior art keywords
actuators
drive element
clamping
piezos
actuator
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Withdrawn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
EP99969535A
Other languages
German (de)
English (en)
Inventor
Hans Richter
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1116283A1 publication Critical patent/EP1116283A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/101—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using intermittent driving, e.g. step motors

Definitions

  • the invention relates to a method for compensating sound waves emanating from electro-actuator drives, in particular piezo drives, according to the preamble of claim 1, and devices for carrying out the method.
  • Piezo actuators are used that compensate for the vibrations of the wings by generating counter-vibrations on them, controlled accordingly.
  • electro-actuator motors which generate rotary movements or linear movements with oscillating piezo actuators. These or similar motors have the disadvantage that they emit undesirable noises that hinder their use.
  • the task is to improve electro-actuator motors so that they largely do not emit any noise to the environment.
  • Figure 1 is a side view of an electro-actuator motor according to the principle of DE 94 19 802.0 Ul with a separate actuator for sound compensation.
  • FIG. 2 shows a section A - A through FIG. 1;
  • Fig. 2a shows a section BB through Fig. 1;
  • FIG. 3 shows a side view of an embodiment with a noise-compensating second drive element
  • Fig. 4 shows a section A - A through Fig. 4;
  • FIG. 5 shows a side view of an embodiment with a noise-compensating integrated second drive element
  • FIG. 5a shows a section BB through FIG. 5;
  • FIG. 6 shows a section A - A through FIG. 5;
  • FIG. 9 is a view of a preferred embodiment of the cages and FIG. 10 is a view corresponding to FIG. 9 to explain a further mode of operation
  • the drive element 1 according to FIG. 1 consists of two pairs of lifting piezos Hl and H2 and two pairs of clamping piezos Kl and K2, each of which is clamped in a cage 4 and a cage 4 'running at right angles thereto .
  • this piezo arrangement is connected axially four times in a common drive element body 5 to drive element 1.
  • the drive element body 5 is continuous in the area of the outer bridges 6 and 6 'and axially and radially separated in the rest of the area by three slots 8, so that the four partial areas 14 thus formed can oscillate independently of one another, driven by the stroke piezos H1 and H2.
  • the bridge 6 for the Klemmpiezos Kl and K2 is pressed by the wedge tension 7 and 7 'over a rubber intermediate layer 11 in the direction of the output drum 10 and is supported against the housing 9.
  • the four running shoes 12 of the four partial areas 14 of the drive element body 5 come into cyclical contact with the drive drum 10.
  • the running shoes 12 of the drive element body 5 take the driven drum 10 by friction so that it rotates.
  • the clamping piezos Kl and K2 alternately generate an air gap 13 between the running shoe 12 and the driven wheel 10.
  • the running shoes 12, each relieved by an air gap 13 can swing back without contact by actuating the associated lifting piezos H2 or Hl, while the clamping clamping piezos Kl or K2 are moved in the drive direction (see arrow) by the associated lifting piezos Hl or H2.
  • the noise generated during this process can be compensated for by the additional piezo 15, which is accommodated in the housing 9.
  • this type of compensation can only be optimally designed with an optimally functioning electronic control which detects the emitting sound waves without a significant time delay and converts them in the piezo 15 in such a way that they can compensate the emitting sound waves in good time.
  • the sound waves arise primarily when the pairs of running shoes hit the drum 10 cyclically.
  • a counter-phase sound wave is preferably generated by the compensation piezo 15.
  • the direction of action of the piezo 15 preferably runs in the direction of action of the clamping piezos K1 and K2.
  • a second drive element 17 is added to a first drive element 16.
  • Both drive elements each of which corresponds to drive element 1 according to FIGS. 1 and 2, are driven out of phase by approximately 90 ° according to the diagram according to FIG. 7, so that their sound waves largely compensate.
  • the clamping piezo K3 of the drive element 17 is driven offset by 90 ° to the clamping piezo Kl of the drive element 16, which also applies to H3 in relation to Hl, to K4 in relation to K2 and H4 in relation to H2.
  • the drive element 16 is arranged offset by 180 ° to the drive element 17 the sound cannot be completely compensated for.
  • the two drive elements can only be arranged at a finite distance from one another and thus the sound cannot be compensated for directly at the point of origin.
  • the inevitable space creates uncompensatable radiation.
  • the drive elements 1 and 1 ' are inserted into one another and work with each other to a certain extent without a spatial distance.
  • the clamping and lifting piezos are only half as wide as in the arrangement in FIGS. 1 and 2.
  • the partial regions 14, each formed by a clamping piezo K and a lifting piezo H with associated running shoe 12, are correspondingly formed by the Slots 8 separated.
  • the oscillation range of the piezos K1, K2, Hl, H2 oscillates 90 ° out of phase with the oscillation range of the piezos K3, K4, H3, H4. This provides optimal sound compensation at the point of origin by completely extinguishing the sound waves according to FIG. 8.
  • FIG. 9 shows a section through a drive element body 5 along a slot 8.
  • the cage 4 for the clamping piezos K is elastic in the direction of action of these clamping piezos and has the shape of an O.
  • This cage 4 is connected to the running shoe 12 via two thin webs 20. These webs 20 taper towards one another in the direction of the running shoe 12.
  • the cage 4 'for the lifting piezos H also has the shape of an O and is thus designed to be elastic in the direction of action of the lifting piezos H.
  • the end of the cage 4 'facing away from the bridge 6' bears against another O-shaped cage 21, which is likewise designed to be elastic in the effective direction of the lifting piezos H.
  • This further cage 21 is connected to the running shoe 12 via a thin web 22. It is also possible to connect the cage 4 'directly to the running shoe 12 via the web 22.
  • each column of the lifting piezo pairs H1 and H2 is divided into halves HA and HB, which are controlled separately from one another, with a phase response corresponding to the desired respective drive speed.
  • the piezos of the halves HA and HB can have different polarities. All piezos of the halves HA and HB resonate at full stroke, but in mutually different phases that can be changed.
  • the effective stroke is the sum of the stroke of the one half HA or HB plus that by the Phase difference of reduced hubs of the other half HB or HA.
  • Mechanical step size can thus be adjusted by changing the phase difference. This means that all piezos can vibrate above the hearing threshold of 20 kHz.
  • One of the halves HA or HB can thus be regarded as a further actuator 15.
  • the phase shift between HA and HB can be one or more oscillation periods large, so that in successive strokes of z.

Landscapes

  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

L'invention concerne un mécanisme d'entraînement à commande électrique possédant des actionneurs oscillants logés dans un boîtier (9). Ces actionneurs constituent un élément d'entraînement (1) composé de deux paires d'actionneurs (K, H). Chaque paire d'actionneurs comprend un actionneur de serrage (K) et un actionneur de levage (H) qui sont placés perpendiculairement l'un par rapport à l'autre. Les actionneurs de serrage (K) agissent de façon cyclique sur un composant (10) à entraîner. Les actionneurs de serrage et de levage (K, H) d'une paire sont placés en formant un angle de 90° et les paires d'actionneurs sont commandées avec décalage de 180° entre elles. Pour compenser les ondes sonores ainsi produites, le boîtier (9) abrite un autre actionneur (15) qui est commandé en opposition de phase par rapport aux actionneurs de serrage (K) et qui est logé dans le boîtier (9) de façon sensiblement parallèle à la direction d'action des actionneurs de serrage (K).-
EP99969535A 1998-09-21 1999-09-18 Procede de compensation d'ondes sonores et dispositif correspondant Withdrawn EP1116283A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19843004 1998-09-21
DE19843004 1998-09-21
DE19928140 1999-06-19
DE19928140A DE19928140A1 (de) 1998-09-21 1999-06-19 Verfahren zur Kompensation von Schallwellen und Vorrichtung zur Durchführung des Verfahrens
PCT/EP1999/006921 WO2000017944A1 (fr) 1998-09-21 1999-09-18 Procede de compensation d'ondes sonores et dispositif correspondant

Publications (1)

Publication Number Publication Date
EP1116283A1 true EP1116283A1 (fr) 2001-07-18

Family

ID=26048956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969535A Withdrawn EP1116283A1 (fr) 1998-09-21 1999-09-18 Procede de compensation d'ondes sonores et dispositif correspondant

Country Status (5)

Country Link
US (1) US20010011861A1 (fr)
EP (1) EP1116283A1 (fr)
AU (1) AU5979399A (fr)
DE (1) DE19928140A1 (fr)
WO (1) WO2000017944A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009833B3 (de) * 2015-08-03 2017-01-19 Kocks Technik Gmbh & Co Kg "Lager für einen Walzenzapfen einer Walze oder für eine Walzenwelle eines Walzgerüsts und Walzgerüst"

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004513310A (ja) * 2000-11-05 2004-04-30 リヒター、ハンス 電力喪失時の自動的解除機能を有する圧電式アクチュエータ
DE10117465A1 (de) * 2001-04-06 2002-10-10 Hans Richter Piezoelektrischer Antrieb
US7187103B2 (en) * 2001-06-06 2007-03-06 Miniswys Sa Piezoelectric drive
DE10148603B4 (de) * 2001-10-02 2004-02-19 Siemens Ag Aktoreinheit mit wenigstens zwei Aktorelementen
FR2885060A1 (fr) * 2005-04-29 2006-11-03 Peugeot Citroen Automobiles Sa Dispositif de controle actif pour compenser des efforts generateurs de vibrations et vehicule automobile comprenant un tel dispositif
US8498669B2 (en) 2005-06-16 2013-07-30 Qualcomm Incorporated Antenna array calibration for wireless communication systems
CN101371430B (zh) * 2005-12-12 2012-06-13 伯塔·里克特 用于汽车驱动、执行机构等的压电式电机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4613782A (en) * 1984-03-23 1986-09-23 Hitachi, Ltd. Actuator
DE9419802U1 (de) * 1994-12-10 1996-04-04 Richter, Hans, 86163 Augsburg Schrittmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0017944A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009833B3 (de) * 2015-08-03 2017-01-19 Kocks Technik Gmbh & Co Kg "Lager für einen Walzenzapfen einer Walze oder für eine Walzenwelle eines Walzgerüsts und Walzgerüst"

Also Published As

Publication number Publication date
AU5979399A (en) 2000-04-10
DE19928140A1 (de) 2000-03-23
US20010011861A1 (en) 2001-08-09
WO2000017944A1 (fr) 2000-03-30

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