Relevant bibliographies by topics / Machinery; Vibration control

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Machinery; Vibration control'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Machinery; Vibration control"

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Seto, Kazuto. "Active vibration control in machinery." Journal of the Acoustical Society of Japan (E) 12, no. 6 (1991): 263–72. http://dx.doi.org/10.1250/ast.12.263.

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von Flotow, Andreas, and George Zipfel. "Blade vibration control in turbo-machinery." Journal of the Acoustical Society of America 113, no. 2 (2003): 687. http://dx.doi.org/10.1121/1.1560258.

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Hathout, J. P., and A. El-Shafei. "PI Control of HSFDs for Active Control of Rotor-Bearing Systems." Journal of Engineering for Gas Turbines and Power 119, no. 3 (1997): 658–67. http://dx.doi.org/10.1115/1.2817035.

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This paper describes the proportional integral (PI) control of hybrid squeeze film dampers (HSFDS) for active control of rotor vibrations. Recently it was shown that the automatically controlled HSFD based on feedback of rotor speed can be a very efficient device for active control of rotor vibration when passing through critical speeds. Although considerable effort has been put into the study of steady-state vibration control, there are few methods in the literature applicable to transient vibration control of rotor-bearing systems. Rotating machinery may experience dangerously high dynamic loading due to the sudden mass unbalance that could be associated with blade loss. Transient run-up and coast down through critical speeds when starting up or shutting down rotating machinery induces excessive bearing loads at criticals. In this paper, PI control is proposed as a regulator for the HSFD system to attenuate transient vibration for both sudden unbalance and transient runup through critical speeds. A complete mathematical model of this closed-loop system is simulated on a digital computer. Results show an overall enhanced behavior for the closed-loop rotor system. Gain scheduling of both the integral gain and the reference input is incorporated into the closed-loop system with the PI regulator and results in an enhanced behavior of the controlled system.
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Palazzolo, A. B., R. R. Lin, R. M. Alexander, A. F. Kascak, and J. Montague. "Piezoelectric Pushers for Active Vibration Control of Rotating Machinery." Journal of Vibration and Acoustics 111, no. 3 (1989): 298–305. http://dx.doi.org/10.1115/1.3269856.

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The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers has been discussed extensively in the literature. These devices, though effective, are usually large in volume and add significant weight to the stator. The use of piezoelectric pushers may provide similar degrees of effectiveness in light, compact packages. This paper contains analyses which extend quadratic regulator and derivative feedback control methods to the “prescribed displacement” character of piezoelectric pushers. The structrual stiffness of the pusher is also included in the theory. Tests are currently being conducted at NASA Lewis Research Center with piezoelectric pusher-based active vibration control. The paper presents results performed on the NASA test rig as preliminary verification of the related theory.
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Ambrosini, R. D., R. O. Curadelli, and R. F. Danesi. "Alternative to traditional systems of vibration control of rotating machinery." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 219, no. 1 (2005): 27–42. http://dx.doi.org/10.1243/095440805x8557.

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The main objective of this paper is the comparison between the efficiency of vibration control systems of rotating machinery, in order to present alternatives for the cases in which it is not possible or convenient to use traditional systems. Moreover, the formulation of the theoretical dynamic load that should be used in the dynamic analysis is discussed. An experimental and numerical study is presented considering as an alternative system of vibration absorption the incorporation of masses on the support structure. Masses of 5, 10, and 15 per cent of the total mass of the vibrating machinery are included in the analysis. A set of tests about a case study on the spring (traditional) and built-in masses (alternative) systems is presented. Moreover, a linear dynamic analysis of the models with a finite element code was carried out. The behaviour of the built-in masses system is very good, reducing the acceleration response on the support structure to levels comparable to traditional systems.
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El-Shafei, A. "Active Control Algorithms for the Control of Rotor Vibrations Using Hybrid Squeeze Film Dampers." Journal of Engineering for Gas Turbines and Power 124, no. 3 (2002): 598–607. http://dx.doi.org/10.1115/1.1421058.

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The hybrid squeeze film damper (HSFD) has proven itself to be an effective controlling device of vibration in rotating machinery. The critical stage in the development of the HSFD as an active vibration suppressant, is the development of the control algorithms for active control of rotor vibrations. This paper summarizes, evaluates, and compares the control algorithms for HSFD-supported rotors. Quantitative as well as qualitative measures of the effectiveness of the control algorithms are presented. The study includes the PID-type controllers, LQR, gain scheduling, adaptive and bang-bang controllers. The adaptive, gain scheduling, and nonlinear proportional controllers have proved to be quite effective in the active control of HSFD supported rotors, with impressive results.
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Xia, Y., and A. Ghasempoor. "Adaptive active vibration suppression of flexible beam structures." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 3 (2008): 357–64. http://dx.doi.org/10.1243/09544062jmes567.

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Vibration control strategies strive to reduce the effect of harmful vibrations on machinery and people. In general, these strategies are classified as passive or active. Although passive vibration control techniques are generally less complex, there is a limit to their effectiveness. Active vibration control strategies, on the other hand, can be very effective but require more complex algorithms and are especially susceptible to time delays. The current paper introduces a novel vibration suppression system using non-linear optimization. The proposed methodology eliminates the need for a feedback loop and the sensitivity to time delays. The system has been evaluated experimentally and the results show the validity of the proposed methodology.
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Dobrzycki, Przemysław, and Piotr Rychlewski. "Site control procedures for applicability and quality of Rapid Impulse Compaction." MATEC Web of Conferences 251 (2018): 02018. http://dx.doi.org/10.1051/matecconf/201825102018.

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Rapid development of foundation engineering and substrate improvement technologies and also availability of various enforcement techniques make that dynamic or vibration-related technologies are used in such accomplishments. They are distinguished with numerous advantages like fast execution and large bearing capacities resulting from good compaction or additional compaction of natural soils during executing the work. Among such technologies most often used are, inter alia, stone columns, impulse compaction, dynamic replacement and, finally, micro-explosions. These technologies feature however some drawbacks like noise and vibrations. Noise is definitely more arduous for people. Although it is not more intense than that of standard work on construction site, but periodicity of noise source (e.g. vibrator, pile-driver) is oppressive for outsiders. Vibrations are generally better tolerated than noise. However, the influence of work exerted on neighbouring facilities should be under control. Accelerometers, which measure acceleration of structure elements caused by dynamic influences from working machinery, are used for this purpose. Another problem is the quality control of the work progressed. The paper provides both exemplary measurement equipment for vibration control and control procedures assessing efficiency of substrate improvement process.
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Lewis, David W., James W. Moore, and Julien LeBleu. "Vibration limiting of rotating machinery through active control means." Journal of the Acoustical Society of America 82, no. 5 (1987): 1858. http://dx.doi.org/10.1121/1.395791.

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Jamil, N., M. F. Hassan, S. K. Lim, and A. R. Yusoff. "Predictive maintenance for rotating machinery by using vibration analysis." Journal of Mechanical Engineering and Sciences 15, no. 3 (2021): 8289–99. http://dx.doi.org/10.15282/jmes.15.3.2021.07.0651.

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This paper presents a complete and well tested virtual instrument (VI) for computer numerical control (CNC) machine predictive maintenance. The national instrument (NI) hardware, LabVIEW software and accelerometer sensor are acquired for the vibration analysis integrated with virtual instrument were developed based on the vibration severity chart threshold in ISO 10816. Validation experiments of the predictive maintenance module were utilized on drilling and milling processes to test and verify the effectiveness of the module. Results obtained from current module can monitor and provide the machine conditions at different condition of good, satisfactory, unsatisfactory, and unacceptable for rotating machinery status according to the vibration severity chart as per ISO 10816.
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Dissertations / Theses on the topic "Machinery; Vibration control"

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Lau, M. W. S. "Active vibration control at machinery feet." Thesis, Aston University, 2000. http://publications.aston.ac.uk/15340/.

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The unmitigated transmission of undesirable vibration can result in problems by way of causing human discomfort, machinery and equipment failure, and affecting the quality of a manufacturing process. When identifiable transmission paths are discernible, vibrations from the source can be isolated from the rest of the system and this prevents or minimises the problems. The approach proposed here for vibration isolation is active force cancellation at points close to the vibration source. It uses force feedback for multiple-input and multiple-output control at the mounting locations. This is particularly attractive for rigid mounting of machine on relative flexible base where machine alignment and motions are to be restricted. The force transfer function matrix is used as a disturbance rejection performance specification for the design of MIMO controllers. For machine soft-mounted via flexible isolators, a model for this matrix has been derived. Under certain conditions, a simple multiplicative uncertainty model is obtained that shows the amount of perturbation a flexible base has on the machine-isolator-rigid base transmissibility matrix. Such a model is very suitable for use with robust control design paradigm. A different model is derived for the machine on hard-mounts without the flexible isolators. With this model, the level of force transmitted from a machine to a final mounting structure using the measurements for the machine running on another mounting structure can be determined. The two mounting structures have dissimilar dynamic characteristics. Experiments have verified the usefulness of the expression. The model compares well with other methods in the literature. The disadvantage lies with the large amount of data that has to be collected. Active force cancellation is demonstrated on an experimental rig using an AC industrial motor hard-mounted onto a relative flexible structure. The force transfer function matrix, determined from measurements, is used to design H and Static Output Feedback controllers. Both types of controllers are stable and robust to modelling errors within the identified frequency range. They reduce the RMS of transmitted force by between 30?80% at all mounting locations for machine running at 1340 rpm. At the rated speed of 1440 rpm only the static gain controller is able to provide 30?55% reduction at all locations. The H controllers on the other hand could only give a small reduction at one mount location. This is due in part to the deficient of the model used in the design. Higher frequency dynamics has been ignored in the model. This can be resolved by the use of a higher order model that can result in a high order controller. A low order static gain controller, with some tuning, performs better. But it lacks the analytical framework for analysis and design.
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Jenkins, Michael David. "Active control of periodic machinery vibrations." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480701.

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Cook, Nathan Lindquist. "Investigation of vibration control of hypotrochoidally driven machninery." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17391.

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Newton, Jeffrey Michael. "Vibration control in a machine tool barfeed." Thesis, University of Huddersfield, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254734.

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Houlston, Paul Robert. "Active vibration control of rotating machines." Thesis, University of Nottingham, 2007. http://eprints.nottingham.ac.uk/10275/.

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Second order matrix equations arise in the description of real dynamical systems. Traditional modal control approaches utilise the eigenvectors of the undamped system to diagonalise the system matrices. Any remaining off-diagonal terms in the modal damping matrix are discarded. A regrettable automatic consequence of this action is the destruction of any notion of the skew-symmetry in the damping. The methods presented in this thesis use the `Lancaster Augmented Matrices' (LAMs) allowing state space representations of the second order systems. `Structure preserving transformations' (SPTs) are used to manipulate the system matrices whilst preserving the structure within the LAMs. Utilisation of the SPTs permits the diagonalisation of the system mass, damping and stiffness matrices for non-classically damped systems. Thus a modal control method is presented in this thesis which exploits this diagonalisation. The method introduces independent modal control in which a separate modal controller is designed in modal space for each individual mode or pair of modes. The modal displacements and velocities for the diagonalised systems are extracted from the physical quantities using first order SPT-based filters. Similarly the first order filters are used to translate the modal force into the physical domain. Derivation of the SPT-filters is presented together with a method by which one exploits the non-uniqueness of the diagonalising filters such that initially unstable filters are stabilised. In the context of active control of rotating machines, standard optimal controller methods enable a trade-off to be made between (weighted) mean-square vibrations and (weighted) mean-square control forces, or in the case of a machines controlled using magnetic bearings the currents injected into the magnetic bearings. One shortcoming of such controllers for magnetic bearings is that no concern is devoted to the voltages required. In practice, the voltage available imposes a strict limitation on the maximum possible rate of change of control force (force slew rate). This thesis presents a method which removes the aforementioned existing shortcomings of traditional optimal control. Case studies of realistic rotor systems are presented to illustrate the modal control and control force rate penalisation methods. The system damping matrices of the case studies contain skew-symmetric components due to gyroscopic forces typical of rotating machines. The SPT-based modal control method is used to decouple the non-classically damped equations of motion into n single degree of freedom systems. Optimal modal controllers are designed independently in the modal space such that the modal state, modal forces and modal force rates are weighted as required. The SPT-based modal control method is shown to yield superior results to the conventional notion of independent modal space control according to reasonable assessment.
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Clark, Peter. "Devices for the reduction of pipeline vibration." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296445.

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Baseer, M. A. "Control of vibration in a flexible rotor-bearing system." Thesis, University of Bath, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254323.

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Moore, M. P. "Development of a Prolog vibration expert system for rotational machinery management." Thesis, Cranfield University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237556.

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Roach, M. P. "Vibration control in rotating machinery using variable dynamic stiffness hydrostatic squeeze-films." Thesis, Staffordshire University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254234.

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Lee, Yong Keat. "Active vibration control of a piezoelectric laminate plate using spatial control approach." Title page, abstract and table of contents only, 2005. http://hdl.handle.net/2440/37711.

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This thesis represents the work that has been done by the author during his Master of Engineering Science candidature in the area of vibration control of flexible structures at the School of Mechanical Engineering, The University of Adelaide, between March 2003 and June 2004. The aim of this research is to further extend the application of the Spatial Control Approach for two-dimensional flexible structures for attenuating global structural vibration with the possible implication of reduction in noise radiation. The research was concentrated on a simply supported thin flexible plate, using piezoelectric ceramic materials as actuators and sensors. In this work, active controllers were designed for the purpose of controlling only the first five vibration modes (0-500Hz) of the plate. A spatial controller was designed to minimize the total energy of the spatially distributed signal, which is reflected by the spatial H2 norm of the transfer function from the disturbance signal to the vibration output at every point over the plate. This approach ensures the vibration contributed by all the in bandwidth (0-500 Hz) vibration modes is minimized, and hence is capable of minimizing vibration throughout the entire plate. Within the control framework, two cases were considered here; the case when the prior knowledge of the incoming disturbance in terms of reference signal is vailable and the case when it is not available. For the case when the reference signal is available, spatial feedforward controller was designed; whereas for the case when the reference signal is not available, spatial feedback controller was designed to attenuate the global disturbance. The effectiveness of spatial controllers was then compared with that of the standard point-wise controllers numerically and experimentally. The experimental results were found to reflect the numerical results, and the results demonstrated that spatial controllers are able to reduce the energy transfer from the disturbance to the structural output across the plate in a more uniform way than the point-wise controllers. The research work has demonstrated that spatial controller managed to minimize the global plate vibrations and noise radiation that were due to the first five modes.
Thesis (M.Eng.Sc.)--School of Mechanical Engineering, 2005.
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Books on the topic "Machinery; Vibration control"

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Wu, Yulin. Vibration of hydraulic machinery. Springer, 2013.

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Wu, Yulin. Vibration of Hydraulic Machinery. Springer Netherlands, 2013.

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Du, Chunling. Modeling and control of vibration in mechanical systems. CRC Press, 2010.

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Kurchavova, T. P. Izmerenie vibrat͡s︡ii mashin na proizvodstve. Izd-vo Sankt-Peterburgskogo universiteta ėkonomiki i finansov, 1991.

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Stépán, Gábor. IUTAM Symposium on Dynamics Modeling and Interaction Control in Virtual and Real Environments: Proceedings of the IUTAM Symposium on Dynamics Modeling and Interaction Control in Virtual and Real Environments, Held in Budapest, Hungary, June 7–11, 2010. Springer Science+Business Media B.V., 2011.

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Bosso, Nicola. Mechatronic Modeling of Real-Time Wheel-Rail Contact. Springer Berlin Heidelberg, 2013.

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Maslen, Eric H. Magnetic Bearings: Theory, Design, and Application to Rotating Machinery. Springer-Verlag Berlin Heidelberg, 2009.

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Haddar, Mohamed. Design and Modeling of Mechanical Systems: Proceedings of the Fifth International Conference Design and Modeling of Mechanical Systems, CMSM´2013, Djerba, Tunisia, March 25-27, 2013. Springer Berlin Heidelberg, 2013.

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1958-, Lee Tong Heng, and Huang Sunan 1962-, eds. Precision motion control: Design and implementation. 2nd ed. Springer, 2008.

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Conference, on Mechanical Vibration and Noise (12th 1989 Montreal Quebec). Machinery dynamics--applications and vibration control problems: Presented at the 1989 ASME Design Technical Conferences, 12th Biennial Conference on Mechanical Vibration and Noise, Montreal, Quebec, Canada, September 17-21, 1989 : sponsored by the Technical Committee on Vibration and Sound of the Design Engineering Division, ASME. ASME, 1989.

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Book chapters on the topic "Machinery; Vibration control"

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Martinez, Nicholas, Jermaine Chambers, Michelle Gegel, Eric Schmierer, and Alex Scheinker. "Drill Vibration Suppression Through Phase-Locked Loop Control." In Experimental Techniques, Rotating Machinery, and Acoustics, Volume 8. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15236-3_2.

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Holmes, R. "The Control of Rotor Vibration using Squeeze-Film Dampers." In Vibration and Wear in High Speed Rotating Machinery. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1914-3_23.

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Nordmann, R. "Vibration Control and Failure Diagnosis in Rotating Machinery by means of Active Magnetic Bearings." In Active and Passive Vibration Control of Structures. Springer Vienna, 2014. http://dx.doi.org/10.1007/978-3-7091-1821-4_7.

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Tsujichi, Nobutaka, Takayuki Koizumi, and Takuya Tonomura. "Examination of a Feeling of Pulse Control Method for Cruiser-type Motorcycle." In Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9428-8_28.

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Dai, Juan, C. L. Philip Chen, Xiao-Yan Xu, et al. "Machinery Vibration Signals Analysis and Monitoring for Fault Diagnosis and Process Control." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-87442-3_86.

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Roach, M. P., and M. J. Goodwin. "Vibration Control in Rotating Machinery by the use of Accumulators or Aerated Lubricants." In Rotordynamics ’92. Springer London, 1992. http://dx.doi.org/10.1007/978-1-4471-1979-1_46.

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Moreira, Alysson B. Barbosa, and Fabrice Thouverez. "Dynamic Modelling and Vibration Control of a Turbomolecular Pump with Magnetic Bearings in the Presence of Blade Flexibility." In Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74693-7_10.

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Jossa, Ingo, Uwe Marschner, and Wolf-Joachim Fischer. "Application of the FSOM to Machine Vibration Monitoring." In Fuzzy Control. Physica-Verlag HD, 2000. http://dx.doi.org/10.1007/978-3-7908-1841-3_36.

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Rushton, Mitchell, and Amir Khajepour. "Transverse Vibration Control in Planar Cable-Driven Robotic Manipulators." In Mechanisms and Machine Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61431-1_21.

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Rams, Hubert, Markus Schöberl, and Kurt Schlacher. "Control of Beam Vibrations by Casimir Functions." In Dynamics and Control of Advanced Structures and Machines. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-90884-7_15.

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Conference papers on the topic "Machinery; Vibration control"

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Guanglin, Zhang, Qi Qian, and Yu Zhihao. "Shaft Vibration Monitoring System for Rotating Machinery." In 2016 Sixth International Conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC). IEEE, 2016. http://dx.doi.org/10.1109/imccc.2016.17.

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Jacques, Robert N. "Piezoceramic Based Actuator/Sensor Arrays for Active Noise Control of Machinery." In SAE Noise and Vibration Conference and Exposition. SAE International, 1997. http://dx.doi.org/10.4271/971888.

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Ni, Yuan, He Lin, and Yan Li. "Stability design of maglev actuator in active vibration control." In First International Conference on Information Sciences, Machinery, Materials and Energy. Atlantis Press, 2015. http://dx.doi.org/10.2991/icismme-15.2015.304.

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Sun, Huo-Ching, Yann-Chang Huang, Kun-Yuan Huang, and Wei-Chi Su. "Vibration Fault Diagnosis of Rotating Machinery in Power Plants." In 2009 Fourth International Conference on Innovative Computing, Information and Control (ICICIC). IEEE, 2009. http://dx.doi.org/10.1109/icicic.2009.378.

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Pang Peilin and Ding Guangbin. "Wavelet-based diagnostic model for rotating machinery subject to vibration monitoring." In 2008 Chinese Control Conference (CCC). IEEE, 2008. http://dx.doi.org/10.1109/chicc.2008.4605102.

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Lin, Reng R., Alan B. Palazzolo, Albert F. Kascak, and Gerald Montague. "Use of piezoelectric actuators in active vibration control of rotating machinery." In Orlando '90, 16-20 April, edited by Rudolf Hartmann, M. J. Soileau, and Vijay K. Varadan. SPIE, 1990. http://dx.doi.org/10.1117/12.21669.

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CLARK, WILLIAM, and J. KIM. "COMPARISON OF VIBRATION AMPLITUDE SUPPRESSION VS. DYNAMIC BEARING LOAD SUPPRESSION IN ACTIVE VIBRATION CONTROL OF ROTATING MACHINERY." In 34th Structures, Structural Dynamics and Materials Conference. American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1594.

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"Application Analysis of Structural Vibration Control in Aseismic and Wind Resistant Bridge Design." In 2018 9th International Conference on Civil Engineering, Materials and Machinery. Francis Academic Press, 2018. http://dx.doi.org/10.25236/iccemm.2018.010.

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Hathout, J. P., and A. El-Shafei. "PI Control of HSFDs for Active Control of Rotor-Bearing Systems." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-123.

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This paper describes the proportional integral (PI) control of hybrid squeeze film dampers (HSFDs) for active control of vibrations of rotors. Recently it was shown that the automatically controlled HSFD based on feedback of rotor speed can be a very efficient device for active control of rotor vibration when passing through critical speeds. Although considerable effort has been put into the study of steady state vibration control, there are few methods in the literature applicable to transient vibration control of rotor-bearing systems. Rotating machinery may experience dangerously high dynamic loading due to the sudden mass unbalance that could be associated with blade loss. Transient run-up and coast down through critical speeds when starting up or shutting down rotating machinery induces excessive bearing loads at criticals. In this paper, PI control is proposed as a regulator for the HSFD system to attenuate transient vibration for both sudden unbalance and transient run-up through critical speeds. A complete mathematical model of this closed-loop system is simulated on a digital computer. Results show an overall enhanced behavior for the closed-loop rotor system. Gain scheduling of both the integral gain and the reference input is incorporated to the closed-loop system with the PI regulator and results in an enhanced behavior of the controlled system.
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Moehlis, Jeff, Barry E. DeMartini, Jeffrey L. Rogers, and Kimberly L. Turner. "Exploiting Nonlinearity to Provide Broadband Energy Harvesting." In ASME 2009 Dynamic Systems and Control Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/dscc2009-2542.

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Energy harvesters are a promising technology for capturing useful energy from the environment or a machine’s operation. In this paper we highlight ideas that might lead to energy harvesters that more efficiently harvest a portion of the considerable vibrational energy that is present for human-made devices and environments such as automobiles, trains, aircraft, watercraft, machinery, and buildings. Specifically, we consider how to exploit ideas based on properties of nonlinear oscillators with negative linear stiffness driven by periodic and stochastic inputs to design energy harvesters having large amplitude response over a broad range of ambient vibration frequencies. Such harvesters could improve upon proposed harvesters of vibrational energy based on linear mechanical principles, which only give appreciable response if the dominant ambient vibration frequency is close to the resonance frequency of the harvester.
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Reports on the topic "Machinery; Vibration control"

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Goodwin, M. J., and M. P. Roach. Vibration Control in Rotating Machinery Using Variable Dynamic Stiffness Squeeze-Films. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada202902.

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Roach M. J. /Goodwin, M. P. Vibration Control in Rotating Machinery Using Variable Dynamic Stiffness Squeeze-Films. Volume 1. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada174417.

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Goodwin, M. J., and M. P. Roach. Vibration Control in Rotating Machinery Using Variable Dynamic Stiffness Squeeze Films. Volume 2. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada174433.

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