EP2151283A1 - Vorrichtung zum automatischen erregen und stabilisieren von resonanzschwingungen von ultraschallsystemen - Google Patents

Vorrichtung zum automatischen erregen und stabilisieren von resonanzschwingungen von ultraschallsystemen Download PDF

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Publication number
EP2151283A1
EP2151283A1 EP07866949A EP07866949A EP2151283A1 EP 2151283 A1 EP2151283 A1 EP 2151283A1 EP 07866949 A EP07866949 A EP 07866949A EP 07866949 A EP07866949 A EP 07866949A EP 2151283 A1 EP2151283 A1 EP 2151283A1
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EP
European Patent Office
Prior art keywords
oscillations
feedback circuit
amplifier
resonance
current intensity
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Withdrawn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
EP07866949A
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English (en)
French (fr)
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EP2151283A4 (de
Inventor
Vladimir Konstantinovich Astashev
Nikolai Alekseevich Andrianov
Vitalii Lvovich Krupenin
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.)
Zakrytoe Akcionernoe Obshestvo "Nacionalnaya Tehnologicheskaya Gruppa''
Original Assignee
Zakrytoe Akcionernoe Obshestvo "Nacionalnaya Tehnologicheskaya Gruppa''
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Publication date
Application filed by Zakrytoe Akcionernoe Obshestvo "Nacionalnaya Tehnologicheskaya Gruppa'' filed Critical Zakrytoe Akcionernoe Obshestvo "Nacionalnaya Tehnologicheskaya Gruppa''
Publication of EP2151283A1 publication Critical patent/EP2151283A1/de
Publication of EP2151283A4 publication Critical patent/EP2151283A4/de
Withdrawn legal-status Critical Current

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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 production process automation and is directed at producing mechanical ultrasonic oscillations by using electric energy.
  • An ultrasonic phase stabilized oscillator comprising serially connected driving oscillator and power amplifier, connected to an ultrasonic converter, connected to a current sensor output and a phase locked loop connected to an adjusting element, its output connected to the driving oscillator input (patent RU 25699 , cl. B 06 B 1/0, 20.10.2002)
  • the disadvantage of the known device is an impossibility to implement the entire amplitude-frequency response, as there are branches instable is forced oscillation regimes. Precisely for this reason the device does not have sufficient stability what decreases possible technologic load.
  • the closest technical solution is the device for exciting and automatic stabilization of resonance oscillations of ultrasonic systems, comprising an electroacoustic converter and oscillation sensor connected to an amplifier, which is integrated into a feedback circuit, and a power supply (certificate of authorship SU 483148 , cl. B 06 B 1/02, 05.09.1975).
  • a microphone gapped with regard to a free butt-end of the oscillating system, excited by the electroacoustic converter, is used as an oscillation sensor.
  • the disadvantage of this device is constructive complexity of microphone installation into the oscillating system package, due to the necessity to ensure running wave emission by the free butt-end of the oscillating system because any wave reflections from the package walls result is standing waves generation and make the device unable to work.
  • the purpose of the invention is to remove the above disadvantages.
  • the technical result of the invention implementation is simplification of the construction of the device for exciting and stabilization of ultrasonic systems, enhancement of a possible technological load and increase of the device operation stability.
  • the set task is solved and the technical result is achieved by the fact that the device for exciting and automatic stabilization of resonance oscillations of ultrasonic systems, comprising an electroacoustic converter connected to an amplifier, which is integrated into a feedback circuit, and a power supply is equipped with a current intensity sensor in the power circuit of the electroacoustic converter which is formed by means of the feedback circuit equipped with the phase shifter, the input thereof is connected to the current intensity sensor and the output thereof is connected to the amplifier input.
  • the proposed device does not have the prior art disadvantages, because the feedback is arranged using electric parameters instead of mechanic ones.
  • the device for exciting and automatic stabilization of resonance oscillations of ultrasonic systems comprises an oscillation system, its oscillations are excited by electroacoustic converter, piezoelectric converter 1, connected to amplifier 2, which is integrated into a feedback circuit, and power supply 3.
  • Current intensity sensor 4 is connected to electroacoustic converter power circuit I 3 which is formed by means of the feedback circuit.
  • the feedback circuit is also equipped with phase shifter 5, the input thereof is connected to the current intensity sensor 4 and the output thereof is connected to the amplifier input 2.
  • Alternative electric voltage is fed to converter 1 coatings what results in exciting of mechanical oscillations that are transferred to a tool installed at a free end of the concentrator.
  • the whole system is squeezed up against the work piece (marked by section lining) by static force ( Fig.2 ).
  • a vibrating tool performs the technological operation.
  • the technology process execution efficiency depends mainly on amount of pressure effort and tool oscillation amplitude. The more are these amounts the higher is the performance of the device.
  • This circuit lacks the driving oscillator, and the oscillation frequency is not imposed on the device from the outside.
  • the system operates in the self-excited oscillation regime instead of that of forced oscillations. In this case the oscillations are excited using the positive feedback circuit.
  • the positive feedback circuit is made using electric parameters, i.e. the intensity of current in the converter power circuit.
  • a phase shifter is integrated into the feedback circuit, ensuring phase shift between the converter supply current and voltage, corresponding to the resonance regime.
  • the non-linear amplifier is constructed so as to ensure the self-excitation of oscillations.
  • Self-excitation occurs if the initial amplification factor is big enough.
  • the self-excitation occurs always in case of relay characteristic.
  • the oscillation amplitude is adjusted by amplifier response limiting level ( Fig.3 ), where U S is sensor voltage, proportional to the current intensity in the power circuit and U H is electroacoustic converter supply voltage.
  • the slope of the initial part of the response defines the initial amplification factor. If a certain value of the initial amplification factor is exceeded the self-excitation of oscillations occurs.
  • the amplitude of steady oscillations is determined by U V saturation level.
  • the oscillations of the ultrasonic system occur at its resonance frequency even if it changes owing to change of system or technologic load parameters over a wide range.
  • the claimed device Owing to its implementation in the self-oscillation regime device, by changing the phase in the feedback circuit the entire amplitude-frequency response can be implemented, including the branches instable in the forced oscillation regime. Due to precisely this reason the claimed device is absolutely stable and allows to increase the technologic load in tens of times compared to equally powerful systems operating in the forced oscillation regime. This device can be used for turning, wire drawing, strengthening surface treatment, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transducers For Ultrasonic Waves (AREA)
EP07866949A 2007-05-11 2007-12-12 Vorrichtung zum automatischen erregen und stabilisieren von resonanzschwingungen von ultraschallsystemen Withdrawn EP2151283A4 (de)

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

Publications (2)

Publication Number Publication Date
EP2151283A1 true EP2151283A1 (de) 2010-02-10
EP2151283A4 EP2151283A4 (de) 2011-12-07

Family

ID=40002427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07866949A Withdrawn EP2151283A4 (de) 2007-05-11 2007-12-12 Vorrichtung zum automatischen erregen und stabilisieren von resonanzschwingungen von ultraschallsystemen

Country Status (5)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017452A3 (de) * 2011-07-29 2013-07-25 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 (4)

* 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
US4906948A (en) * 1987-07-07 1990-03-06 Thomson-Csf Oscillator with piezoelectric resonator
US5109212A (en) * 1989-03-29 1992-04-28 Bruno Cortinovis Electronically controlled horn for motor vehicles
WO2006131460A1 (en) * 2005-06-06 2006-12-14 The Technology Partnership Plc System for controlling an electronic driver for a nebuliser

Family Cites Families (8)

* 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
JP2737420B2 (ja) * 1991-03-04 1998-04-08 日本電気株式会社 超音波モータの駆動方式
JP3051689B2 (ja) * 1997-02-17 2000-06-12 本多電子株式会社 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
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

Patent Citations (4)

* 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
US4906948A (en) * 1987-07-07 1990-03-06 Thomson-Csf Oscillator with piezoelectric resonator
US5109212A (en) * 1989-03-29 1992-04-28 Bruno Cortinovis Electronically controlled horn for motor vehicles
WO2006131460A1 (en) * 2005-06-06 2006-12-14 The Technology Partnership Plc System for controlling an electronic driver for a nebuliser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008140347A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017452A3 (de) * 2011-07-29 2013-07-25 Herrmann Ultraschalltechnik Gmbh & Co. Kg Verfahren zur berechnung der schwingungsamplitude einer sonotrode
US9423291B2 (en) 2011-07-29 2016-08-23 Herrmann Ultraschalltechnik Gmbh & Co. Kg Method for calculating the oscillation amplitude of a sonotrode
DE102017107151A1 (de) * 2017-04-03 2018-10-04 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultraschallbearbeitungsmaschine mit zwei Sonotroden und Verfahren zum Betreiben einer solchen

Also Published As

Publication number Publication date
RU2350405C2 (ru) 2009-03-27
EA014548B1 (ru) 2010-12-30
WO2008140347A1 (fr) 2008-11-20
RU2007117548A (ru) 2008-11-20
CN101687221B (zh) 2011-08-03
EA200901362A1 (ru) 2010-04-30
EP2151283A4 (de) 2011-12-07
CN101687221A (zh) 2010-03-31

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