WO2020175899A1 - Dispositif et procédé pour générer un signal de réponse du type choc destiné à supprimer une vibration - Google Patents

Dispositif et procédé pour générer un signal de réponse du type choc destiné à supprimer une vibration Download PDF

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Publication number
WO2020175899A1
WO2020175899A1 PCT/KR2020/002717 KR2020002717W WO2020175899A1 WO 2020175899 A1 WO2020175899 A1 WO 2020175899A1 KR 2020002717 W KR2020002717 W KR 2020002717W WO 2020175899 A1 WO2020175899 A1 WO 2020175899A1
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WO
WIPO (PCT)
Prior art keywords
vibration
response signal
signal
shock
control unit
Prior art date
Application number
PCT/KR2020/002717
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English (en)
Korean (ko)
Inventor
노승훈
Original Assignee
금오공과대학교 산학협력단
주식회사 티브이에스
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Application filed by 금오공과대학교 산학협력단, 주식회사 티브이에스 filed Critical 금오공과대학교 산학협력단
Publication of WO2020175899A1 publication Critical patent/WO2020175899A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
    • G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/02—Details

Definitions

  • the present invention relates to a vibration control device and method, and more particularly, to a shock-type response signal generating device and method capable of suppressing vibration.
  • vibration is a transient response that disappears over time because there is no supply of continuous external force such as centrifugal force after an impact is applied as shown in Fig. 1 and the amplitude generated from the centrifugal force of the rotating body is kept constant as shown in Fig.
  • transient vibration include increased noise, vibration caused by instantaneous acceleration and deceleration, and flow induced vibrations such as snoring and piping vibration.
  • Steady-state vibration is the vibration of machinery or equipment having rotating bodies such as motors, spindles, helicopter/wind generator rotors, ship propellers, monitors, and screws.
  • dampers are most widely used, and the dampers are manual.
  • a manual damper is a device that absorbs vibration by dissipating the internal stress and friction energy of a vibrating object by adding a spring or a vibration absorber to the vibration part.
  • a manual damper if a manual damper is installed, the rigidity of the structure is lowered.
  • the overall size of the resulting copper may be larger, which may reduce product quality, durability and reliability.
  • An active damper is a device that senses vibration from a sensor, generates a response signal by a signal generator, transmits it to the actuator, and then reduces the vibration by supplying a response signal through the actuator operation.
  • an active damper kit Kit. It can be divided into a case where a vibration analysis is performed and a case where a vibration analysis is not performed, a case where a response signal is set in advance by performing a vibration analysis and a response signal is immediately supplied when a vibration occurs.
  • an expensive frequency analyzer (at least KRW 10,000 or more) is essential, and the bulky controller, sensor, and
  • the frequency analyzer is an effective device capable of accurate analysis of vibration, but the calculation process is complex, so it takes 2 to 4 seconds only to analyze the signal (the time to convert the time domain signal to the frequency domain signal). After several tens of cycles (if the frequency is 10 Hz, 20 to 40 cycles), the response (output of the corresponding signal) is 2020/175899 1»(:1 ⁇ 1 ⁇ 2020/002717 Since it becomes possible, real-time vibration control is not possible, and there is a problem of low control efficiency.
  • the frequency analyzer analyzes the vibration signal measured by the sensor to obtain finite frequency components, and the frequency analyzer, control box, or the like in the active damping kit indicated by the red box. It analyzes the motion signal through other measuring equipment and transmits the vibration wave of reverse phase to the actuator by the signal generator. In this way, the measured vibration signal meets and cancels the reverse signal supplied by the actuator to relieve the vibration.
  • Vibration signal (corresponding signal with exactly opposite phase to each other (the purpose is to supply blood,
  • the measured signal from the sensor (1) passes through the phase inverters (31, 32), and the actuator (2) is driven by a signal of the opposite phase (indicated by the red box) to respond to the vibrating body (4). Supply the signal.
  • this method coincides with the operating frequency of the corresponding signal and the natural frequency of the vibrating body, so that the resonance between the actuator and the vibrating body inevitably occurs.
  • signal processing is an operation on an input signal, but it is not as long as the frequency analysis process as in the case of Fig. 4, but the time required for signal processing increases as the signal becomes more complex. Exactly due to the vibration of a complex signal In the process of generating a signal of the opposite phase, noise, error, and delay time are very likely to occur.
  • [18]-Step 1 Perform a vibration analysis on the vibrating body in advance, and determine the finite (1 ⁇ 3) frequency components that have the largest amplitude among the infinite frequency component vibrations. Then, based on the analysis result, the corresponding signal Set in advance.
  • Step 2-Step 3 When the vibration signal is transmitted to the control unit, a preset response signal is
  • This technology proposes a method of responding to the response signal in the opposite phase to the entire vibration signal as shown in Fig. 8 and a method of supplying the response signal only for a part of the cycle (1/4 cycle) as shown in Fig. 9.
  • the actuator In order to respond, the actuator must be attached to the vibrating body, and resonance occurs because the two signals are vibrations of the same frequency component.
  • the response signal In the case of Fig. 9, the response signal is supplied only for a part of the cycle (1/4 cycle). It is the simplest form, but it is possible that some parts of the period coincide and resonate. The biggest problem is that the response signal is continuous, so a short response signal is instantaneously
  • Figure 11 shows the vibration at the point of supplying a corresponding signal to the generated transient vibration.
  • FIG. 12 shows the result of supplying all of the simplified five intermittent response signals shown in FIG. 10 to the vibration signal.
  • the vibration is abnormally chained by supply of the first response signal in time. 2020/175899 1»(:1 ⁇ 1 ⁇ 2020/002717
  • the vibration is reduced, but at time /2 , the vibration reappears due to the secondary response signal.
  • the vibration amplitude decreases as there is no additional response signal between the times /2 and /3 , but again, the movement size becomes larger due to the additional response signal supply at /3 , /4 , and /5 .
  • the continuous response signal supply has a side effect of increasing the vibration more than the simplified 5 response signals as shown in FIG.
  • the shock type signal since the shock type signal has no frequency component, there is no possibility of resonance at all, and there is no phase difference problem due to the delay time, since the time of supplying the corresponding signal is determined in advance of the delay time, and the signal continues after the vibration is controlled. Since there is no supply, there is no possibility of increasing the vibration. Therefore, when supplying a response signal to suppress the vibration signal, it is desirable to control the vibration by supplying it as a shock-type signal instead of continuously supplying it.
  • the present invention for achieving the above object is a sensor 100 that detects vibration from the vibrating body 10; a control unit 200 that generates and transmits a shock response signal to cancel the detected vibration. ); and an actuator 300 driven by the transmitted corresponding signal.
  • the sensor 100 senses the generation and magnitude of vibration and transmits it to the control unit 200.
  • the control unit 200 generates an impact response signal based on preset data, and transmits it to the actuator 300.
  • the actuator 300 is driven by the transmitted signal and supplies a shock response signal to suppress vibration.
  • the control unit includes a repeat execution unit (0) capable of additionally executing the control unit 200 when the residual vibration after output is large.
  • the frequency component having the largest vibration among various frequency components constituting the motion signal through vibration measurement as shown in Fig. 14 is selected. 2020/175899 1» (:1 ⁇ 1 ⁇ 2020/002717)
  • the characteristic (frequency, period) and the corresponding signal supply point are programmed in advance in the control unit 200.
  • the frequency component with the greatest vibration corresponds to the vibration characteristic of the vibrating body. Therefore, when measuring the vibration, it appears consistently as the natural frequency or operating frequency of the vibrating body.
  • the point at which the corresponding signal is supplied (2) is the time required from sensor detection to actuator response.
  • the time when the sensor 100 detects the vibration and transmits the signal to the control unit the time when the control unit 200 generates a response signal and transmits it to the actuator 300, and the actuator 300 It corresponds to the reaction time.
  • control unit 200 generates a shock signal corresponding to the vibration magnitude of the frequency component previously identified in the first step and transmits it to the actuator 300
  • FIG. 15 is an exemplary diagram showing the vibration signal, the shock response signal, and the result.
  • the vibration signal on the left is the same as in Fig. 14 (the signal of the frequency component having the largest vibration determined through vibration measurement), and an enlarged view of the blue circle portion is shown for detailed confirmation.
  • the corresponding signal in the center is the vibration characteristic determined in advance.
  • the shock signal that can extinguish the vibration at 2 is generated by the control unit 200 and transmitted to the actuator 300, and the actuator 300 is driven to supply a response signal.
  • the result signal on the right the shock signal is generated. It can be confirmed that the vibration disappears from the supplied 2.
  • the shock for a very short time (0.001 to 0.02 8 ) as shown in Fig. 17 is used.
  • 2020/175899 1»(:1/10 ⁇ 020/002717 Vibration can be suppressed with a response signal, so the following side effects in the conventional technology do not occur.
  • Fig. 1 is an example of transient vibration.
  • [57 Fig. 3 is an example of a technique in which vibration analysis is performed in an active damper.
  • [58 Fig. 4 is a mechanism of the active damper in Fig. 3, which is the opposite of the vibration signal (A).
  • Fig. 5 is an example of a technology in which vibration analysis is not performed in an active damper.
  • FIG. 6 is an example diagram in which a phase difference occurs due to a longer delay time, and in the worst case (phase difference 180°) the amplitude is doubled.
  • FIG. 7 is a conceptual diagram of the mechanism of an active damper that performs vibration analysis.
  • FIG. 8 is an exemplary diagram showing a method of supplying a corresponding signal to the vibration signal and the entire vibration signal introduced in the active damper technology of FIG. 7.
  • FIG. 9 is an exemplary diagram showing a vibration signal introduced in the active damper technology of FIG. 7 and a corresponding signal supplied during a quarter cycle.
  • Fig. W is an example diagram of a simplified successive response signal into five shocks.
  • FIG. 11 is an exemplary diagram in which a shock response signal is supplied to the vibration signal once.
  • FIG. 12 is an exemplary view showing that the vibration signal is supplied with a signal corresponding to five shocks and the vibration is increased.
  • FIG. 13 is an exemplary diagram showing a corresponding signal generating apparatus.
  • 15 is an exemplary diagram in which a vibration signal and a single shock response signal are supplied.
  • 16 is an exemplary diagram showing the characteristics of the visual point sunlight vibration signal.
  • Fig. 17 is a diagram showing abuse of the shock response signal at temperature 15.
  • FIG. 18 shows the frequency components and the largest
  • Fig. 19 is an exemplary diagram of transient vibration control, shock band fusion signal, and supply.
  • Fig. 20 is an attempt to supply the shock response signal rule for the temperature steady state vibration control.
  • Fig. 21 is a conceptual diagram of the experiment
  • the new meaning of a broader meaning takes the form of a compound word.
  • the word “conversation” and the word “channel” are combined to form a dialogue channel as this 3 ⁇ 4 of communication.
  • the embodiment presented in the specification is a preferred embodiment for implementation, and in some cases, other configurations may be added or the original configuration may be omitted.
  • the configuration includes or includes a configuration. Can be implemented.
  • an apparatus for generating a shock response signal generates and transmits a shock response signal capable of extinguishing the vibration detected by the controller 200 after sensing the vibration by the sensor 100, and using the transmitted response signal.
  • the actuator 300 is driven.
  • the above shock response signal is a vibration measurement that has the greatest vibration
  • the characteristic of the frequency component and the timing of supplying the corresponding signal are identified and transferred to the control unit 200.
  • the signal of the frequency component that has the greatest vibration due to the bandwidth of 1 sub-band by filtering the signal rules (0 ⁇ 10 is 1 3 2!, 10 ⁇ 2 is 1 1.3, 30 ⁇ 7 is 1) There is no large frequency component, and in case of 101 at 100, 101. ⁇ 2,
  • the vibrations of the frequency components are shown separately. It can be seen that most of the vibrations can be eliminated if the corresponding signal responds to one or two frequency components of the largest vibration. [[Therefore, the shock response signal is generated to remove the frequency component with the greatest vibration.
  • Fig. 16 describes the process of generating a large angular signal in detail.
  • Fig. 23 is an enlarged picture of the front part of the frequency component signal with the greatest vibration, 1 is the time when the vibration occurs, and 2 is the deal and II time (vibration It is the time when the response signal is supplied, taking into account the time of detection and until the actuator half-fusion (intermediate band fusion signal generation/supply), 3 is the point at which the second amplitude reaches the second amplitude after vibration (1/4 cycle), and 4 is the point at which one cycle passes.
  • the amplitude at 2 can be predicted in advance through the inclination of the signal after vibration detection. Therefore, when the sensor (100) is transmitted to the vibration level rule control unit (200) at 1, the tilt rule It can be generated and transmitted by determining the magnitude of the shock response signal that can extinguish the vibration. With the transmitted response signal, the actuator 300 is driven and supplied to the shock response signal/vibrator 10 to suppress the vibration.
  • the repeating execution unit 210 repeats the process performed by the control unit 200 when a large residual vibration remains even after the shock response signal is supplied, and the actuator 300 applies an additional shock-to-fusion signal rule for the magnitude of the vibration. Can supply.
  • vibration is composed of several frequency components.
  • Fig. 23 is an example of finding the largest frequency component.
  • four frequencies In the steady state vibration composed of components, the frequency component of the largest vibration can be checked.
  • the shock treatment signal is supplied, referring to rule 19, after the occurrence of vibration.
  • the magnitude of the vibration gradually decreases due to friction and air resistance as time goes by. After the vibration is generated, it is possible to ensure that the vibration is immediately extinguished when a response signal in the form of an impact that can suppress the vibration is supplied once. have.
  • Figure 21 shows the experimental configuration and experimental video of 168!
  • Fig. 22 shows the actual results of Fig. 21, and in the figure, for the visible effect
  • the vibration was controlled by supplying a response signal rule one cycle after the occurrence of the vibration, but in the real case, the response signal and supply can be provided immediately after the vibration occurs.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

La présente invention concerne un dispositif et un procédé pour générer un signal de réponse du type choc par lequel une vibration peut être supprimée. Les caractéristiques (une fréquence, une amplitude de vibration de fréquence et une pente) d'une composante de fréquence ayant la plus grande vibration, parmi des composantes de fréquence constituant un signal de vibration, sont déterminées par mesure de vibration, puis l'application d'un signal de réponse du type choc est préprogrammée dans une unité de commande (200) conjointement avec un instant d'application de signal de réponse. De plus, lorsque l'apparition d'une vibration et son intensité sont détectées par un capteur (100) et sont transférées à l'unité de commande (200), un signal de réponse du type choc correspondant à l'amplitude de vibration de la composante de fréquence, qui a été prédéterminée dans l'unité de commande (200), est généré et transféré, et un actionneur (300) est attaqué par le signal transféré. Par conséquent, par application du signal de réponse du type choc, une vibration peut être efficacement supprimée sans effet secondaire selon lequel la vibration devient plus forte. Lorsqu'une vibration subsiste après que le signal de réponse du type choc a été appliqué, l'unité de commande (200) peut être utilisée de façon répétée pour appliquer un signal de réponse supplémentaire.
PCT/KR2020/002717 2019-02-28 2020-02-26 Dispositif et procédé pour générer un signal de réponse du type choc destiné à supprimer une vibration WO2020175899A1 (fr)

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KR10-2019-0023566 2019-02-28
KR1020190023566A KR102194265B1 (ko) 2019-02-28 2019-02-28 진동억제를 위한 충격 형태의 대응신호 생성 장치 및 방법

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000020139A (ja) * 1998-06-29 2000-01-21 Tokai Rubber Ind Ltd アクティブ制御装置
KR20120130471A (ko) * 2011-05-23 2012-12-03 엘지전자 주식회사 잔여 진동 제어 장치
JP2015175461A (ja) * 2014-03-17 2015-10-05 Ｎｅｃプラットフォームズ株式会社 車載振動抑制装置
KR20170001077A (ko) * 2015-06-25 2017-01-04 백옥경 건물의 자체 충격 또는 진동 신호를 이용한 일체형 층간소음 완화 장치, 그 방법 및 내진장치
KR20180094568A (ko) * 2017-02-16 2018-08-24 주식회사 티브이에스 진동 제어 장치 및 방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009114821A (ja) 2007-11-09 2009-05-28 Toyoda Gosei Co Ltd 建物用制振装置
KR100979244B1 (ko) 2008-04-30 2010-08-31 주식회사 하이닉스반도체 반도체 소자의 캐패시터 형성방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000020139A (ja) * 1998-06-29 2000-01-21 Tokai Rubber Ind Ltd アクティブ制御装置
KR20120130471A (ko) * 2011-05-23 2012-12-03 엘지전자 주식회사 잔여 진동 제어 장치
JP2015175461A (ja) * 2014-03-17 2015-10-05 Ｎｅｃプラットフォームズ株式会社 車載振動抑制装置
KR20170001077A (ko) * 2015-06-25 2017-01-04 백옥경 건물의 자체 충격 또는 진동 신호를 이용한 일체형 층간소음 완화 장치, 그 방법 및 내진장치
KR20180094568A (ko) * 2017-02-16 2018-08-24 주식회사 티브이에스 진동 제어 장치 및 방법

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KR102194265B1 (ko) 2020-12-22

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