WO2008140347A1 - Dispositif pour exciter et stabiliser automatiquement des oscillations par résonance de systèmes ultrasoniques - Google Patents

Dispositif pour exciter et stabiliser automatiquement des oscillations par résonance de systèmes ultrasoniques Download PDF

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Publication number
WO2008140347A1
WO2008140347A1 PCT/RU2007/000699 RU2007000699W WO2008140347A1 WO 2008140347 A1 WO2008140347 A1 WO 2008140347A1 RU 2007000699 W RU2007000699 W RU 2007000699W WO 2008140347 A1 WO2008140347 A1 WO 2008140347A1
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
feedback circuit
oscillations
input
phase shifter
Prior art date
Application number
PCT/RU2007/000699
Other languages
English (en)
Russian (ru)
Inventor
Vladimir Konstantinovich Astashev
Nikolai Alekseevich Andrianov
Vitalii Lvovich Krupenin
Original Assignee
Zakrytoe Akcionernoe Obshestvo 'nacionalnaya Tehnologicheskaya Gruppa'
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 Zakrytoe Akcionernoe Obshestvo 'nacionalnaya Tehnologicheskaya Gruppa' filed Critical Zakrytoe Akcionernoe Obshestvo 'nacionalnaya Tehnologicheskaya Gruppa'
Priority to CN2007800532020A priority Critical patent/CN101687221B/zh
Priority to EP07866949A priority patent/EP2151283A4/fr
Priority to EA200901362A priority patent/EA014548B1/ru
Publication of WO2008140347A1 publication Critical patent/WO2008140347A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0261—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken from a transducer or electrode connected to the driving transducer

Definitions

  • the invention relates to the field of automation of technological processes and is intended to obtain mechanical vibrations of the ultrasonic frequency using electrical energy.
  • State of the art
  • a known ultrasonic generator with phase-locked loop containing a serially connected master oscillator and a power amplifier connected to an ultrasonic transducer connected to the output of the current sensor, as well as a phase locked loop connected to the control element, the output connected to the input of the master oscillator (patent RU 25699 , CL B 06 V 1/0, 10.20.2002).
  • a disadvantage of the known device is the inability to realize the entire amplitude-frequency characteristic, since there are branches that are unstable in forced oscillation modes. For this reason, the device does not have sufficient stability, which reduces the possible technological load.
  • FIG. Thin solid lines show the skeletal curves a, which determine the dependence of the eigenfrequency of the nonlinear system on the oscillation amplitude, and the line of limiting amplitudes b, which is the envelope of the resonance curves.
  • the closest technical solution is a device for the excitation and automatic stabilization of resonant vibrations of ultrasonic systems, containing an electro-acoustic transducer and an oscillation sensor connected to an amplifier included in the feedback circuit and a power source (copyright certificate SU 483148, class B 06 V 1/02 09/151975).
  • a vibration sensor a microphone is used, installed with a gap with respect to the free end of the oscillating system, excited by an electro-acoustic transducer.
  • the disadvantage of this device is the structural complexity of installing a microphone in the housing of the oscillatory system, due to the need to ensure radiation of the traveling wave by the free end of the oscillatory system, since any wave reflections from the walls of the case lead to the formation of standing waves and make the device inoperative.
  • the objective of the invention is to remedy these disadvantages.
  • the technical result achieved by the implementation of the invention is to simplify the design of the device for exciting and stabilizing ultrasonic systems, increasing the possible technological load and increasing the stability of the device.
  • the problem is solved, and the technical result is achieved by the fact that the device for excitation and automatic stabilization of the resonant oscillations of ultrasonic systems, containing an electro-acoustic transducer connected to an amplifier included in the feedback circuit, and a power source, is equipped with a current sensor in the power circuit of the electro-acoustic transducer, organized by a feedback circuit, which is equipped with a phase shifter, the input of which is connected to a current sensor, and the output is connected to amplifier input.
  • the proposed device is devoid of the lack of a prototype, since the feedback is organized by electrical rather than mechanical parameters.
  • Figure l shows a change in the amplitude-frequency characteristics of an ultrasonic technological system operating on a non-linear technological load when it changes;
  • figure 2 shows a block diagram of a device; in Fig.Z - characteristic of the amplifier. _
  • a device for exciting and automatically stabilizing the resonant vibrations of ultrasonic systems contains an oscillating system, the ultrasonic vibrations of which are excited by an electro-acoustic, for example, a piezoelectric transducer 1 connected to an amplifier 2 included in the feedback circuit, and a power source 3.
  • the current sensor 4 is included in the power circuit electro-acoustic transducer I 3 organized by means of a feedback circuit.
  • the reverse circuit is also equipped with a phase shifter 5, the input of which is connected to the current sensor 4, and the output is connected to the input of the amplifier 2.
  • An alternating voltage is applied to the plates of the converter 1. As a result, mechanical vibrations are excited, which are transmitted to the working tool mounted on the free end of the concentrator.
  • the whole system is pressed to the workpiece (marked by hatching) with the static force P (Fig. 2).
  • a vibrating tool performs a technological operation.
  • the efficiency of the process depends mainly on the magnitude of the clamping force and the amplitude of the oscillations of the tool. The larger these values, the higher the performance of the device.
  • the oscillation frequency of the device is not imposed on the device from the outside.
  • the system does not work in forced oscillation mode, but in self-oscillation mode.
  • the oscillations are excited using a positive feedback circuit.
  • the positive feedback circuit is built using electrical parameters, namely the current strength in the power supply circuit of the Converter.
  • a phase shifter is included in the feedback circuit, which provides a phase shift corresponding to the resonant mode between the current and the supply voltage of the converter.
  • the nonlinear amplifier is constructed in such a way as to ensure self-excitation of the oscillations.
  • Self-excitation occurs if the initial gain is large enough. With a relay characteristic, self-excitation always occurs.
  • the amplitude of the oscillations is regulated by the level of limitation of the characteristics of the amplifier (Fig.Z), where U d is the sensor voltage proportional to the current strength in the power circuit, and U in is the supply voltage of the electro-acoustic transducer.
  • the slope of the initial portion of the characteristic determines the initial gain. When a certain value of the initial gain is exceeded, self-excitation of self-oscillations occurs.
  • the amplitude of steady-state self-oscillations is determined by the level of saturation U in .
  • the oscillations of the ultrasonic system occur at its resonant frequency even when it changes due to changes in the parameters of the system or technological load over a wide range.
  • the claimed device Due to the implementation of the self-oscillating mode in the device, by changing the phase in the feedback circuit, it is possible to realize the entire amplitude-frequency characteristic, including the branches that are unstable in the modes of forced oscillations. It is for this reason that the claimed device has absolute stability and allows tens of times to increase the technological load in comparison with systems operating in forced oscillation modes at their equal power.
  • the specified device can be used for turning, wire drawing, surface hardening, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

L'invention concerne le domaine de l'automatisation de processus technologiques et est destinée à produire des oscillations mécaniques à fréquence ultrasonique en utilisant l'énergie électrique. Le dispositif pour exciter des oscillations ultrasoniques à régulation automatique de fréquence pendant le fonctionnement comprend un convertisseur électroacoustique connecté à un amplificateur inséré dans un circuit à rétroaction ainsi qu'une source d'alimentation. Le dispositif est muni d'un capteur d'intensité de courant dans le circuit d'alimentation formée au moyen du circuit à rétroaction doté d'un variateur de phase. L'entrée du variateur de phase est connectée au capteur d'intensité de courant et sa sortie est reliée à l'entrée de l'amplificateur; le dispositif permet d'assurer une stabilité élevée et d'augmenter la charge technologique.
PCT/RU2007/000699 2007-05-11 2007-12-12 Dispositif pour exciter et stabiliser automatiquement des oscillations par résonance de systèmes ultrasoniques WO2008140347A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2007800532020A CN101687221B (zh) 2007-05-11 2007-12-12 用于自动激励和稳定超声波系统的谐振的装置
EP07866949A EP2151283A4 (fr) 2007-05-11 2007-12-12 Dispositif pour exciter et stabiliser automatiquement des oscillations par résonance de systèmes ultrasoniques
EA200901362A EA014548B1 (ru) 2007-05-11 2007-12-12 Устройство для возбуждения и автоматической стабилизации резонансных колебаний ультразвуковых систем

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2007117548/28A RU2350405C2 (ru) 2007-05-11 2007-05-11 Устройство для возбуждения и автоматической стабилизации резонансных колебаний ультразвуковых систем
RU2007117548 2007-05-11

Publications (1)

Publication Number Publication Date
WO2008140347A1 true WO2008140347A1 (fr) 2008-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000699 WO2008140347A1 (fr) 2007-05-11 2007-12-12 Dispositif pour exciter et stabiliser automatiquement des oscillations par résonance de systèmes ultrasoniques

Country Status (5)

Country Link
EP (1) EP2151283A4 (fr)
CN (1) CN101687221B (fr)
EA (1) EA014548B1 (fr)
RU (1) RU2350405C2 (fr)
WO (1) WO2008140347A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052283A1 (de) * 2011-07-29 2013-01-31 Herrmann Ultraschalltechnik Gmbh & Co. Kg Verfahren zur Berechnung der Schwingungsamplitude einer Sonotrode
DE102017107151A1 (de) * 2017-04-03 2018-10-04 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultraschallbearbeitungsmaschine mit zwei Sonotroden und Verfahren zum Betreiben einer solchen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU483148A1 (ru) 1970-08-31 1975-09-05 Государственный Научно-Исследовательский Институт Машиноведения Устройство дл автоматической поднастройки частоты генератора ультразвукового станка
SU557825A1 (ru) * 1976-02-11 1977-05-15 Предприятие П/Я А-3602 Ультразвуковой генератор с автоподстройкой частоты
SU612356A1 (ru) * 1976-03-24 1978-06-25 Ростовский-На-Дону Институт Сельскохозяйственного Машиностроения Самонастраивающа с электромеханическа резонирующа система
JPH04275075A (ja) * 1991-03-04 1992-09-30 Nec Corp 超音波モータの駆動方式
JPH10226196A (ja) * 1997-02-17 1998-08-25 Honda Electron Co Ltd 超音波マーキング装置
RU25699U1 (ru) 2002-05-23 2002-10-20 Закрытое акционерное общество Научно-производственное объединение "Медприбор" Ультразвуковой генератор с фазовой автоподстройкой частоты

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743868A (en) * 1970-10-12 1973-07-03 Denki Onkyo Co Ltd Driving apparatus for piezoelectric ceramic elements
FR2618031A1 (fr) * 1987-07-07 1989-01-13 Thomson Csf Oscillateur a resonateur piezo-electrique
IT1228767B (it) * 1989-03-29 1991-07-03 Electronsystem Spa Avvisatore acustico per autoveicoli pilotato elettronicamente.
US7017506B2 (en) * 2003-01-22 2006-03-28 Single Buoy Moorings, Inc. Marginal gas transport in offshore production
CN100387363C (zh) * 2004-08-31 2008-05-14 中国科学院声学研究所 水中音乐体感振动发射压电型换能器
DE602005022843D1 (de) * 2005-06-06 2010-09-23 Technology Partnership Plc Mel System zur Kontrolle eines elektronischen Treibers für einen Vernebler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU483148A1 (ru) 1970-08-31 1975-09-05 Государственный Научно-Исследовательский Институт Машиноведения Устройство дл автоматической поднастройки частоты генератора ультразвукового станка
SU557825A1 (ru) * 1976-02-11 1977-05-15 Предприятие П/Я А-3602 Ультразвуковой генератор с автоподстройкой частоты
SU612356A1 (ru) * 1976-03-24 1978-06-25 Ростовский-На-Дону Институт Сельскохозяйственного Машиностроения Самонастраивающа с электромеханическа резонирующа система
JPH04275075A (ja) * 1991-03-04 1992-09-30 Nec Corp 超音波モータの駆動方式
JPH10226196A (ja) * 1997-02-17 1998-08-25 Honda Electron Co Ltd 超音波マーキング装置
RU25699U1 (ru) 2002-05-23 2002-10-20 Закрытое акционерное общество Научно-производственное объединение "Медприбор" Ультразвуковой генератор с фазовой автоподстройкой частоты

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2151283A4 *

Also Published As

Publication number Publication date
CN101687221B (zh) 2011-08-03
EP2151283A1 (fr) 2010-02-10
CN101687221A (zh) 2010-03-31
RU2350405C2 (ru) 2009-03-27
EA200901362A1 (ru) 2010-04-30
EA014548B1 (ru) 2010-12-30
RU2007117548A (ru) 2008-11-20
EP2151283A4 (fr) 2011-12-07

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