Articoli di riviste: "Réduction active de vibration"

1

Elliott, Stephen J., Philip A. Nelson e Ian M. Stothers. "Active vibration control". Journal of the Acoustical Society of America 94, n. 2 (agosto 1993): 1177. http://dx.doi.org/10.1121/1.406937.

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2

Harper, Mark F. L. "Active vibration control". Journal of the Acoustical Society of America 94, n. 6 (dicembre 1993): 3533. http://dx.doi.org/10.1121/1.407156.

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3

Schilling, Hermann. "Active vibration damper". Journal of the Acoustical Society of America 99, n. 2 (1996): 644. http://dx.doi.org/10.1121/1.414582.

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4

Baker, E. Bruce. "Active vibration suppressor". Journal of the Acoustical Society of America 82, n. 5 (novembre 1987): 1857. http://dx.doi.org/10.1121/1.395785.

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5

Ichikawa, Hiroyuki, e Takehiko Fushimi. "Active vibration insulator". Journal of the Acoustical Society of America 122, n. 6 (2007): 3148. http://dx.doi.org/10.1121/1.2822942.

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6

Pinson, George T. "Active vibration isolator". Journal of the Acoustical Society of America 80, n. 4 (ottobre 1986): 1280. http://dx.doi.org/10.1121/1.394450.

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7

Yasuda, Takayoshi. "Active vibration insulator". Journal of the Acoustical Society of America 126, n. 2 (2009): 933. http://dx.doi.org/10.1121/1.3204347.

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8

Yang, Dong-Ho, Moon-K. Kwak, Jung-Hoon Kim, Woon-Hwan Park e Sang-Hoon Oh. "Active Vibration Control Experiment on Automobile Using Active Vibration Absorber". Transactions of the Korean Society for Noise and Vibration Engineering 21, n. 8 (20 agosto 2011): 741–51. http://dx.doi.org/10.5050/ksnve.2011.21.8.741.

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9

R RASID, Syed Mamun, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA e Daisuke YAMAGUCHI. "Active Vibration Isolation System with an Active Dynamic Vibration Absorber". Proceedings of the Dynamics & Design Conference 2016 (2016): 422. http://dx.doi.org/10.1299/jsmedmc.2016.422.

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10

Karnopp, D. "Active and Semi-Active Vibration Isolation". Journal of Mechanical Design 117, B (1 giugno 1995): 177–85. http://dx.doi.org/10.1115/1.2836452.

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Abstract (sommario):

In the five decades since the founding of the ASME Design Engineering Division, the important problem of vibration isolation has been attacked first through the design of passive spring-damper suspensions and later by the use of active and semi-active elements. This paper reviews the historical development of theoretical concepts necessary for the design of isolation systems and indicates how control theory began to influence vibration isolation in the last half of this period. Practical active and semi-active suspensions have only recently become possible with the advent of powerful but relatively inexpensive signal processors. To illustrate these developments for engineers who have not been intimately involved with active systems, only simple vibrational system models will be discussed, although some modern hardware will be shown which is now being applied to complex systems. Instead of attempting to review the many theoretical concepts which have been proposed for active systems, this article will focus on a relatively simple idea with which the author has been associated over the past thirty years; namely the “skyhook” damper. This idea came through purely theoretical studies but is now used in combination with other concepts in production suspension systems. Two quite different application areas will be discussed. The first involves stable platforms to provide extreme isolation for delicate manufacturing operations against seismic inputs and the second involves automotive suspensions. Although similar concepts are found in these two application areas, the widely varying requirements result in very different suspension hardware. The special case of the semi-active damper, which requires very little control power and is presently reaching production, will also be discussed.

11

Karnopp, D. "Active and Semi-Active Vibration Isolation". Journal of Vibration and Acoustics 117, B (1 giugno 1995): 177–85. http://dx.doi.org/10.1115/1.2838660.

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Abstract (sommario):

In the five decades since the founding of the ASME Design Engineering Division, the important problem of vibration isolation has been attacked first through the design of passive spring-damper suspensions and later by the use of active and semi-active elements. This paper reviews the historical development of theoretical concepts necessary for the design of isolation systems and indicates how control theory began to influence vibration isolation in the last half of this period. Practical active and semi-active suspensions have only recently become possible with the advent of powerful but relatively inexpensive signal processors. To illustrate these developments for engineers who have not been intimately involved with active systems, only simple vibrational system models will be discussed, although some modern hardware will be shown which is now being applied to complex systems. Instead of attempting to review the many theoretical concepts which have been proposed for active systems, this article will focus on a relatively simple idea with which the author has been associated over the past thirty years; namely the “skyhook” damper. This idea came through purely theoretical studies but is now used in combination with other concepts in production suspension systems. Two quite different application areas will be discussed. The first involves stable platforms to provide extreme isolation for delicate manufacturing operations against seismic inputs and the second involves automotive suspensions. Although similar concepts are found in these two application areas, the widely varying requirements result in very different suspension hardware. The special case of the semi-active damper, which requires very little control power and is presently reaching production, will also be discussed.

12

Rouch, Keith E. "Active vibration control device". Journal of the Acoustical Society of America 94, n. 2 (agosto 1993): 1177. http://dx.doi.org/10.1121/1.406936.

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13

Staple, Alan E., e Bruce A. MacDonald. "Active vibration control systems". Journal of the Acoustical Society of America 94, n. 6 (dicembre 1993): 3533. http://dx.doi.org/10.1121/1.407158.

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14

Marshall, Phillip. "Active vibration isolation system". Journal of the Acoustical Society of America 94, n. 6 (dicembre 1993): 3532. http://dx.doi.org/10.1121/1.407184.

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15

Walkowc, Janusz. "Active torsional vibration damper". Journal of the Acoustical Society of America 102, n. 6 (1997): 3248. http://dx.doi.org/10.1121/1.420166.

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16

Sawada, Hideshi, e Hisashi Sano. "Active vibration control system". Journal of the Acoustical Society of America 98, n. 6 (dicembre 1995): 3026. http://dx.doi.org/10.1121/1.413833.

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17

Harper, Mark F. L. "Active control of vibration". Journal of the Acoustical Society of America 99, n. 2 (1996): 643. http://dx.doi.org/10.1121/1.414580.

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18

Sutcliffe, Sean G. C., Graham P. Eatwell e Stephen M. Hutchins. "Active control of vibration". Journal of the Acoustical Society of America 92, n. 1 (luglio 1992): 627. http://dx.doi.org/10.1121/1.404093.

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19

Sandercock, John R. "Active vibration isolation systems". Journal of the Acoustical Society of America 90, n. 6 (dicembre 1991): 3387. http://dx.doi.org/10.1121/1.401376.

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20

Ichikawa, Hiroyuki, e Yoshinori Watanabe. "Active vibration damping device". Journal of the Acoustical Society of America 124, n. 1 (2008): 25. http://dx.doi.org/10.1121/1.2960789.

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21

Huston, Dryver R. "Active vibration damping system". Journal of the Acoustical Society of America 126, n. 6 (2009): 3383. http://dx.doi.org/10.1121/1.3274285.

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22

Hansen, Colin H. "Active control of vibration". Applied Acoustics 49, n. 4 (dicembre 1996): 419–20. http://dx.doi.org/10.1016/s0003-682x(97)84212-0.

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23

Hannsen Su, Jen-Houne. "Passive-active vibration isolation". Journal of the Acoustical Society of America 107, n. 6 (2000): 2946. http://dx.doi.org/10.1121/1.429374.

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24

Bowler, C., A. J. Medland e C. W. Stammers. "Vehicle Vibration — Active Control". Measurement and Control 34, n. 4 (maggio 2001): 109. http://dx.doi.org/10.1177/002029400103400406.

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25

Kanestrom, R. K., e O. Egeland. "Nonlinear active vibration damping". IEEE Transactions on Automatic Control 39, n. 9 (1994): 1925–28. http://dx.doi.org/10.1109/9.317126.

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26

Viteckova, Miluse, Antonin Vitecek e Jiri Tuma. "ACTIVE ROTOR VIBRATION CONTROL". Mechanics and Control 32, n. 2 (2013): 77. http://dx.doi.org/10.7494/mech.2013.32.2.77.

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27

Hill, Wayne, e Lev S. Tsimring. "Active vibration control system". Journal of the Acoustical Society of America 120, n. 3 (2006): 1168. http://dx.doi.org/10.1121/1.2355963.

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28

Fuller, C. R., S. J. Elliott, P. A. Nelson e Jiri Tichy. "Active Control of Vibration". Physics Today 50, n. 5 (maggio 1997): 64. http://dx.doi.org/10.1063/1.881838.

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29

SETO, Kazuto. "Active Vibration and Noise Control. Trends on Active Vibration and Noise Control." Journal of the Japan Society for Precision Engineering 64, n. 5 (1998): 641–45. http://dx.doi.org/10.2493/jjspe.64.641.

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30

Biermann, Jan-Welm, Alessandro Fortino, Michael Reke e Ufuk Bakirdogen. "Active Vibration Control By Electro-active Polymers". ATZ worldwide 115, n. 7-8 (13 giugno 2013): 10–14. http://dx.doi.org/10.1007/s38311-013-0080-0.

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31

FUJITA, Takafumi. "Active Vibration and Noise Control. Active Vibration Control of Buildings with Smart Structures." Journal of the Japan Society for Precision Engineering 64, n. 5 (1998): 655–59. http://dx.doi.org/10.2493/jjspe.64.655.

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32

Mizuno, Takeshi, Masuo Hannuki, Yuji Ishino, Toshiro Higuchi e Makoto Murayama. "ACTIVE VIBRATION ISOLATION SYSTEM USING AN ACTIVE DYNAMIC VIBRATION ABSORBER AS AN ACCELEROMETER". Proceedings of the International Conference on Motion and Vibration Control 6.2 (2002): 673–77. http://dx.doi.org/10.1299/jsmeintmovic.6.2.673.

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33

Jacquiet, Philippe, C. Mulato, A. Thiam, Samba Gueye e D. Cheikh. "Efficacité et rémanence de l'amitraz (Taktic R) sur les adultes de Hyalomma dromedarii chez le dromadaire : preliminary study". Revue d’élevage et de médecine vétérinaire des pays tropicaux 47, n. 2 (1 febbraio 1994): 219–22. http://dx.doi.org/10.19182/remvt.9113.

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Abstract (sommario):

L'amitraz (concentré émulsifiable à 12,5 %) a été testé comme moyen de contrôle de Hyalomma dromedarii sur dromadaire dans un troupeau de chamelles laitières de la périphérie de Nouakchott (Mauritanie) à la concentration de 0,025 % de matière active. L'efficacité et la rapidité d'action sont nettes sur les tiques adultes: 95 % de réduction en moins de 8 h, tandis que les nymphes semblent plus résistantes: 50 % de réduction seulement 8 h après traitement. La rémanence de I'amitraz sur dromadaire est très faible: moins de 24 h. De plus, le traite-ment n'a aucun effet sur la survie, la ponte et l'éclosion des oeufs des femelles qui se fixent dans les jours qui suivent la pulvérisation de I'amitraz. Les causes probables de cette faible rémanence sont discutées.

34

Zhang, Li, Shi Ming Ji, Yi Xie e Qiao Ling Yuan. "Study of Active Vibration Control for Flexible Beam’s Vibration". Advanced Materials Research 69-70 (maggio 2009): 685–89. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.685.

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The attenuation of structure vibration is very slow when flexible strucure is stirred external force. It seriously affected the life of flexible structure. Smart structures used piezoelectric ceramics as actuators are an effective manner to solve the problem. This paper uses Fiber Bragg Grating (FBG) as sensors and piezoelectric ceramics as actuators to study the active vibration control for the resonance of the smart beam. Two groups of piezoelectric ceramics will be used for vibration exciter and vibration abatement, respectively. The fiber smart beam is excited to a sharp vibration nearby the particular resonance frequency by controlling the frequency of the vibration excitation. The vibration signal is measured by the FBG sensors and the close loop feedback control is fulfilled by the vibration abatement group, and the vibration amplitude of the fiber smart beam is abated. The experiment results show that the resonance amplitude of the beam is obviously abated by adjusting the frequency, amplitude and phase of the vibration abatement circuit.

35

Nakano, Kimihiko, Yoshihiro Suda e Shigeyuki Nakadai. "Self-Powered Active Vibration Control Using Regenerated Vibration Energy". Journal of Robotics and Mechatronics 11, n. 4 (20 agosto 1999): 310–14. http://dx.doi.org/10.20965/jrm.1999.p0310.

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Abstract (sommario):

Active vibration control using regenerated vibration energy, i.e., self-powered active vibration control is proposed in which energy absorbed by a damper is stored in a condenser. An actuator produces control input using this stored energy. This requires no external energy. Energy used by the actuator is restricted to be less than energy regenerated. It is important to reduce energy consumption in the actuator. The control we developed requires less external energy than typical active control. A linear DC motor operating as an energy regenerative damper with high efficiency is used in experiments realizing self-powered active control and showing better isolation than passive control.

36

Peng, Chao, e Xing Long Gong. "Active-Adaptive Vibration Absorbers and its Vibration Attenuation Performance". Applied Mechanics and Materials 312 (febbraio 2013): 262–67. http://dx.doi.org/10.4028/www.scientific.net/amm.312.262.

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Abstract (sommario):

To improve the working frequency band and the damping effect of vibration absorber, an active-adaptive vibration absorber (AAVA) was presented. The AAVA can be considered as the integration of adaptive tuned vibration absorber (ATVA) and active vibration absorbers (AVA). The principle and the dynamic character of the proposed AAVA were theoretically analyzed. Based on the analysis, a prototype was designed and manufactured. Its dynamic properties and vibration attenuation performances were experimentally investigated. The experimental results demonstrated that the damping ratio of the prototype was significantly reduced by the active force. Consequently, its vibration attenuation capability was significantly improved compared with the ATVA.

37

Kaizuka, T., e K. Nakano. "Active vibration control of a plate using vibration gradients". Journal of Physics: Conference Series 744 (settembre 2016): 012003. http://dx.doi.org/10.1088/1742-6596/744/1/012003.

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38

Block, Carsten, e Horst Peter Woelfel. "Active vibration isolation of structures with vibration sensitive equipment". IABSE Symposium Report 88, n. 5 (1 gennaio 2004): 42–47. http://dx.doi.org/10.2749/222137804796302158.

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39

Tsuji, Hideki, Hiroyuki Itoh, Shinji Mitsuta, Naoyuki Kanayama, Hideaki Kawakami e Yukiyoshi Takayama. "Vibration Reduction of Transfer Feeder by Active Vibration Control." Transactions of the Japan Society of Mechanical Engineers Series C 61, n. 585 (1995): 1867–72. http://dx.doi.org/10.1299/kikaic.61.1867.

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40

Beltrán-Carbajal, Francisco. "Variable frequency harmonic vibration suppression using active vibration absorption". Revista Facultad de Ingeniería Universidad de Antioquia, n. 73 (13 novembre 2014): 144–56. http://dx.doi.org/10.17533/udea.redin.18126.

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Abstract (sommario):

Passive dynamic vibration absorbers have been extensively used for harmful vibration attenuation in many practical engineering systems. The applicability of these passive vibration absorption devices is limited to a specific narrow operation frequency bandwidth. In this article, a novel active vibration absorption scheme is proposed to extend the vibration suppression capability of a passive mass-spring-damper absorber for any excitation frequency, including interest resonant harmonic perturbation forces. The central foundations of a passive absorber are exploited in the design stage of the presented absorption scheme. Thus, the active absorption device applies forces on the protected mechanical system that counteract the unknown perturbation forces, conserving the vibration attenuation property of the passive absorber. The perturbation force is estimated on-line using an extended state observer proposed in this work. Simulation results are included to show the efficiency of the active vibration absorption scheme to reject completely unknown resonant and chaotic forced vibrations affecting the primary mechanical system, and to prove the effectiveness of the estimation of exogenous perturbation forces.

41

Xing, Feng, Jian Guo Cao, Jing Wang e Chang Yong Deng. "Study on Active Vibration Control". Key Engineering Materials 562-565 (luglio 2013): 1527–30. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.1527.

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Abstract (sommario):

This paper analyses the active vibration control technology on the piezoelectric ceramics car-body pieces in fuzzy control Strategy. Adaptive controllers, based on fuzzy logics, are synthesized for the control of vibration of body structure. Piezoelectric element, control system and body structure have been combined to be a intelligent response system to external drive and it’s own vibration. This system can effect reducing body structure’s reaction from environmental load with external energy. The availability of the control strategy has been confirmed by experiments.

42

Patten, William N. "Semi-active vibration mitigation assembly". Journal of the Acoustical Society of America 103, n. 2 (1998): 643. http://dx.doi.org/10.1121/1.421182.

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43

Pearson, J. T., R. M. Goodall e I. Lyndon. "Active control of helicopter vibration". Computing & Control Engineering Journal 5, n. 6 (1 dicembre 1994): 277–84. http://dx.doi.org/10.1049/cce:19940608.

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44

Meirovitch, Leonard. "Active control of structural vibration". Journal of the Acoustical Society of America 80, S1 (dicembre 1986): S32. http://dx.doi.org/10.1121/1.2023751.

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45

Hossain, M. A., e M. O. Tokhi. "Evolutionary adaptive active vibration control". Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 211, n. 3 (1 maggio 1997): 183–93. http://dx.doi.org/10.1243/0959651971539722.

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Abstract (sommario):

This paper presents an investigation into the development of an adaptive active control mechanism for vibration suppression using genetic algorithms (GAs). GAs are used to estimate the adaptive controller characteristics, where the controller is designed on the basis of optimal vibration suppression using the plant model. This is realized by minimizing the prediction error of the actual plant output and the model output. A MATLAB GA toolbox is used to identify the controller parameters. A comparative performance of the conventional recursive least-squares (RLS) scheme and the GA is presented. The active vibration control system is implemented with both the GA and the RLS schemes, and its performance assessed in the suppression of vibration along a flexible beam structure in each case.

46

Pinson, George T. "Active vibration stabilizer and isolator". Journal of the Acoustical Society of America 84, n. 5 (novembre 1988): 1962. http://dx.doi.org/10.1121/1.397095.

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47

Xing, Feng, Jian Guo Cao, Jing Wang e Chang Yong Deng. "Study on Active Vibration Control". Advanced Materials Research 744 (agosto 2013): 528–31. http://dx.doi.org/10.4028/www.scientific.net/amr.744.528.

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Abstract (sommario):

This paper analyses the active vibration control technology on the piezoelectric ceramics car-body pieces in fuzzy control Strategy. Adaptive controllers, based on fuzzy logics, are synthesized for the control of vibration of body structure. Piezoelectric element, control system and body structure have been combined to be a intelligent response system to external drive and it’s own vibration. This system can effect reducing body structure’s reaction from environmental load with external energy. The availability of the control strategy has been confirmed by experiments.

48

Sahinkaya, M. N. "Active Sound and Vibration Control". Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 218, n. 6 (settembre 2004): 513–14. http://dx.doi.org/10.1177/095965180421800608.

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49

Nemoto, Hirotomi. "Active vibration isolation support system". Journal of the Acoustical Society of America 122, n. 3 (2007): 1313. http://dx.doi.org/10.1121/1.2781414.

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50

Richman, S. J., J. A. Giaime, D. B. Newell, R. T. Stebbins, P. L. Bender e J. E. Faller. "Multistage active vibration isolation system". Review of Scientific Instruments 69, n. 6 (giugno 1998): 2531–38. http://dx.doi.org/10.1063/1.1148954.

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