Relevant bibliographies by topics / Actuator placement for vibration control

Academic literature on the topic 'Actuator placement for vibration control'

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Published: 14 March 2023

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Journal articles on the topic "Actuator placement for vibration control"

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Sohn, Jung Woo, and Seung Bok Choi. "Optimal Placement of MFC Actuators for Vibration Control of Cylindrical Shell Structure." Advances in Science and Technology 56 (September 2008): 253–58. http://dx.doi.org/10.4028/www.scientific.net/ast.56.253.

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In the present paper, active vibration control of cylindrical shell structure is conducted based on optimized actuator placement. Anisotropic piezoelectric actuator named as Macro Fiber Composite (MFC) is adopted for vibration control. The governing equations of motions of the cylindrical shell structure including MFC actuators are derived from Lagrange’s equation. For the verification of the proposed analytic model, numerical results of modal analysis are compared with those of experimental test results. Optimal placements of the MFC actuators are determined with Genetic Algorithm for the effective control performance. Robust controller is then designed to suppress structural vibration of the proposed smart structure and control performances are evaluated.
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Šolek, Peter, and Marek Maták. "An Active Control of the Thin-Walled Mechanical Systems." Applied Mechanics and Materials 611 (August 2014): 22–31. http://dx.doi.org/10.4028/www.scientific.net/amm.611.22.

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This article deals with the influence of optimal actuator and sensor placement on the active control of thin-walled mechanical systems. The approach used for optimal actuator and sensor placement is based on the evaluation norms and. The optimal actuator and sensor placement satisfied the requirements on the controllability, observability and spillover prevention. The investigation of the optimal placement of actuators and sensors is demonstrated on the active vibration of the thin-walled two dimensional mechanical systems.
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Sunar, M., and O. Keles. "Magnetostrictive Actuator Modeling and Placement." Advanced Materials Research 83-86 (December 2009): 281–88. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.281.

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Quasi-static equations are presented for a magnetostrictive medium where mechanical and magnetic fields interact with each other. Finite element method is used in conjunction with the Hamilton's principle to deduce equations for the dynamic behavior of the magnetostrictive material. These equations form the basis for the magnetostrictive material to be utilized as a sensor or as an actuator. When used as an actuator, the material can provide enough power to actuate mechanical systems for vibration control. In this work, a cantilever beam with a magnetostrictive actuator is taken to demonstrate the modeling and use of the magnetostrictive actuator in attenuating structural vibrations. The position of the actuator is changed to observe its effect on the response of the system. This is important because it is a well-known fact that the actuator location has impact, sometimes big, on its performance.
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Bobrow,, James E., Faryar Jabbari, and, and Khiem Thai. "A New Approach to Shock Isolation and Vibration Suppression Using a Resetable Actuator1." Journal of Dynamic Systems, Measurement, and Control 122, no. 3 (January 29, 1999): 570–73. http://dx.doi.org/10.1115/1.1286629.

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A novel low power control technique along with a new class of actuators is developed for shock isolation and control of structural vibrations. In contrast to other techniques, including conventional viscous or rate damping, the force produced by the actuator has no velocity dependence. Several experimental, analytical, and simulation results are presented in support of this new, semi-active technique for structural control. The basic approach is to manipulate the system stiffness through the use of resetable actuators. With the proposed control approach, the actuator behaves like a linear spring. However, at appropriate times, the effective unstretched length of the actuator is changed—or reset—to extract energy from the vibrating structure. Experimental validation of the actuator model, analytical results on stability and actuator-placement, and simulation results for earthquake applications are presented. [S0022-0434(00)01603-8]
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Johnson, Marty E., Luiz P. Nascimento, Mary Kasarda, and Chris R. Fuller. "The Effect of Actuator and Sensor Placement on the Active Control of Rotor Unbalance." Journal of Vibration and Acoustics 125, no. 3 (June 18, 2003): 365–73. http://dx.doi.org/10.1115/1.1569946.

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This paper investigates both theoretically and experimentally the effect of the location and number of sensors and magnetic bearing actuators on both global and local vibration reduction along a rotor using a feedforward control scheme. Theoretical approaches developed for the active control of beams have been shown to be useful as simplified models for the rotor scenario. This paper also introduces the time-domain LMS feedforward control strategy, used widely in the active control of sound and vibration, as an alternative control methodology to the frequency-domain feedforward approaches commonly presented in the literature. Results are presented showing that for any case where the same number of actuators and error sensors are used there can be frequencies at which large increases in vibration away from the error sensors can occur. It is also shown that using a larger number of error sensors than actuators results in better global reduction of vibration but decreased local reduction. Overall, the study demonstrated that an analysis of actuator and sensor locations when feedforward control schemes are used is necessary to ensure that harmful increased vibrations do not occur at frequencies away from rotor-bearing natural frequencies or at points along the rotor not monitored by error sensors.
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Wang, Wei Yuan, Kai Xue, and Dong Yan Shi. "Optimal Research of Actuator Placement for Piezoelectric Smart Structure." Key Engineering Materials 419-420 (October 2009): 173–76. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.173.

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The purpose of this paper is to investigate the optimal placement of piezoelectric actuator for active vibration control of smart structure. The structures can be described in the modal space based on the independent modal space control method and dynamic equations derived from finite element model. The modal damping ratios are derived from modal equations and an optimal target is given by maximizing the modal damping ratios. Accumulation method is adopted to the optimization calculation. Simulations are carried out for active vibration control of a conical shell with distributed piezoelectric actuators. Control effects proved the validity of the optimal method above by compared with the non-optimal results. The optimal method in this paper gives a useful guide for quantity optimization of actuators to piezoelectric structures.
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Kar, Indra N., and Kazuto Seto. "Bending and Torsional Vibration Control of a Flexible Structure Using H-infinity Based Approach." Journal of Robotics and Mechatronics 9, no. 5 (October 20, 1997): 387–92. http://dx.doi.org/10.20965/jrm.1997.p0387.

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This paper presents a method of controlling the bending and torsional vibration mode of a flexible structure using H-infinity optimal control. A new idea is proposed in order to reduce the unmodeled system uncertainties by placing actuators in the nodes of certain neglected vibration modes. Then, the controller is designed based on the reduced order model and is capable of attenuating vibration without causing spillover instability. For this purpose, a three degree of freedom lumped parameter mass model of a plate structure is considered to control its vibrations using a dynamic output feedback controller. The actuator dynamics and the placement of the actuators are considered for a effective controller design method. The efficacy of the controller is shown through simulations.
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Lu, Yifan, Qi Shao, Fei Yang, Honghao Yue, and Rongqiang Liu. "Optimal Vibration Control of Membrane Structures with In-Plane Polyvinylidene Fluoride Actuators." International Journal of Structural Stability and Dynamics 20, no. 08 (July 2020): 2050095. http://dx.doi.org/10.1142/s0219455420500959.

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Different kinds of membrane structures have been proposed for future space exploration and earth observation. However, due to the low stiffness, high flexibility, and low damping properties, membrane structures are likely to generate large-amplitude (compared to the thickness) vibrations, which may lead to the degradation of their working performance. In this work, the governing equations are established at first, taking into account the modal control force induced by the polyvinylidene fluoride (PVDF) actuator. The optimal vibration control of the membrane structure is explored subsequently. A square PVDF actuator is attached on the membrane to achieve the vibration suppression. The influence of actuator position and control gains on the vibration control performance are studied. The optimal criteria for actuator placement and energy allocation are developed. Several case studies are numerically simulated to demonstrate the validity of the proposed optimization criteria. The analytical results in this study can serve as guidelines for optimal vibration control of membrane structures. Additionally, the proposed optimization criteria can be applied to active control of different flexible structures.
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Heck, L. P., J. A. Olkin, and K. Naghshineh. "Transducer Placement for Broadband Active Vibration Control Using a Novel Multidimensional QR Factorization." Journal of Vibration and Acoustics 120, no. 3 (July 1, 1998): 663–70. http://dx.doi.org/10.1115/1.2893881.

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This paper advances the state of the art in the selection of minimal configurations of sensors and actuators for active vibration control with smart structures. The method extends previous transducer selection work by (1) presenting a unified treatment of the selection and placement of large numbers of both sensors and actuators in a smart structure, (2) developing computationally efficient techniques to select the best sensor-actuator pairs for multiple unknown force disturbances exciting the structure, (3) selecting the best sensors and actuators over multiple frequencies, and (4) providing bounds on the performance of the transducer selection algorithms. The approach is based on a novel, multidimensional extension of the Householder QR factorization algorithm applied to the frequency response matrices that define the vibration control problem. The key features of the algorithm are its very low computational complexity, and a computable bound that can be used to predict whether the transducer selection algorithm will yield an optimal configuration before completing the search. Optimal configurations will result from the selection method when the bound is tight, which is the case for many practical vibration control problems. This paper presents the development of the method, as well as its application in active vibration control of a plate.
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Huang, Xiu Feng, Ming Hong, and Hong Yu Cui. "The Optimal Location of Piezoelectric Sensor/Actuator Based on Adaptive Genetic Algorithm." Applied Mechanics and Materials 635-637 (September 2014): 799–804. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.799.

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This paper considered the optimal placement of collocated piezoelectric actuator-sensor pairs on a thin cantilever plate using a modal-based linear quadratic independent modal space controller. LQR performance was taken as objective for finding the optimal location of sensor–actuator pairs.The discrete optimal sensor and actuator location problem was formulated in the framework of a zero–one optimization problem,which was solved by real-coded adaptive genetic algorithm (AGA). The vibration response of the piezoelectric plate was calculated using the finite element method (FEM).The optimization and vibration control programs were written by FORTRAN language. The results of numrical examples show that the adaptive genetic algorithm based on the minimum of LQR performance for the optimal location of sensors and actuators is feasible and effective.
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Dissertations / Theses on the topic "Actuator placement for vibration control"

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Potami, Raffaele. "Optimal sensor/actuator placement and switching schemes for control of flexible structures." Worcester, Mass. : Worcester Polytechnic Institute, 2008. http://www.wpi.edu/Pubs/ETD/Available/etd-042808-124333/.

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Dissertation (Ph.D.)--Worcester Polytechnic Institute.
Keywords: hybrid system, PZT actuators, performance enchancement, actuator placement, actuator switching. Includes bibliographical references (leaves 102-108).
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Anthony, David Keith. "Robust optimal design using passive and active methods of vibration control." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312863.

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Swathanthira, Kumar Murali Murugavel Manjakkattuvalasu. "Implementation of an actuator placement, switching algorithm for active vibration control in flexible structures." Link to electronic thesis, 2002. http://www.wpi.edu/Pubs/ETD/Available/etd-1120102-210634.

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Thesis (M.S.)--Worcester Polytechnic Institute.
Keywords: Actuator placement algorithm; piezoelectric actuators; LQR; Galerkin; supervisory control; active vibration control; FEA; switching policy; dSPACE. Includes bibliographical references (p. 58-64).
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Suwit, Pulthasthan Information Technology &amp Electrical Engineering Australian Defence Force Academy UNSW. "Optimal placement of sensor and actuator for sound-structure interaction system." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Information Technology and Electrical Engineering, 2006. http://handle.unsw.edu.au/1959.4/38741.

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This thesis presents the practical and novel work in the area of optimal placement of actuators and sensors for sound-structure interaction systems. The work has been done by the author during his PhD candidature. The research is concentrated in systems with non-ideal boundary conditions as in the case in practical engineering applications. An experimental acoustic cavity with five walls of timber and a thin aluminium sheet fixed tightly on the cavity mouth is chosen in this thesis as a good representation of general sound-structure interaction systems. The sheet is intentionally so fixed that it does not satisfy ideal boundary conditions. The existing methods for obtaining optimal sensor-actuator location using analytic models with ideal boundary conditions are of limited use for such problem with non-ideal boundary conditions. The method presented in this thesis for optimal placement of actuators and sensors is motivated by energy based approach and model uncertainty inclusion. The optimal placement of actuator and sensor for the experimental acoustic cavity is used to construct a robust feedback controller based on minimax LQG control design method. The controller is aimed to reduce acoustic potential energy in the cavity. This energy is due to the structure-borne sound inside the sound-structure interaction system. Practical aspects of the method for optimal placement of actuator and sensors are highlighted by experimental vibration and acoustic noise attenuation for arbitrary disturbance using feedback controllers with optimal placement of actuator and sensor. The disturbance is experimentally set to enter the system via a spatial location different from the controller input as would be in any practical applications of standard feedback disturbance rejections. Experimental demonstration of the novel methods presented in this thesis attenuate structural vibration up to 13 dB and acoustic noise up to 5 dB for broadband frequency range of interest. This attenuation is achieved without the explicit knowledge of the model of the disturbance.
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Szczepanski, Robert Walter. "Optimal placement of actuators and sensors for vibration control using genetic algorithms." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341754.

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Luleci, Ibrahim Furkan. "Active Vibration Control Of Beam And Plates By Using Piezoelectric Patch Actuators." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615491/index.pdf.

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Conformal airborne antennas have several advantages compared to externally mounted antennas, and they will play an important role in future aircrafts. However, they are subjected to vibration induced deformations which degrade their electromagnetic performances. With the motivation of suppressing such vibrations, use of active vibration control techniques with piezoelectric actuators is investigated in this study. At first, it is aimed to control the first three bending modes of a cantilever beam. In this scope, four different modal controllers
positive position feedback (PPF), resonant control (RC), integral resonant control (IRC) and positive position feedback with feed-through (PPFFT) are designed based on both reduced order finite element model and the system identification model. PPFFT, is a modified version of PPF which is proposed as a new controller in this study. Results of real- time control experiments show that PPFFT presents superior performance compared to its predecessor, PPF, and other two methods. In the second part of the study, it is focused on controlling the first three modes of a rectangular plate with four clamped edges. Best location alternatives for three piezoelectric actuators are determined with modal strain energy method. Based on the reduced order finite element model, three PPFFT controllers are designed for three collocated transfer functions. Disturbance rejection performances show the convenience of PPFFT in multi-input multi-output control systems. Performance of the control system is also verified by discrete-time simulations for a random disturbance representing the in-flight aircraft vibration characteristics.
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Jha, Akhilesh K. "Vibration Analysis and Control of an Inflatable Toroidal Satellite Component Using Piezoelectric Actuators and Sensors." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28243.

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Inflatable structures have been a subject of renewed interest in recent years for space applications such as communication antennas, solar thermal propulsion, and entry/landing systems. This is because inflatable structures are very lightweight and on-orbit deployable. In addition, they have high strength-to-mass ratio and require minimal stowage volume, which makes them especially suitable for cost-effective large space structures. An inflated toroidal structure (torus) is often used there in order to provide structural support. For these structures to be effective, their vibration must be controlled while keeping the weight low. Piezoelectric materials have become strong candidates for actuator and sensor applications in the active vibration control of such structures due to their lightweight, conformability to the host structure, and distributed nature. In this study, our main focus is to understand the dynamic characteristics of an inflatable torus and to control its vibration using piezoelectric actuators and sensors. The first part of this study is concerned with theoretical formulations. We use Sanders' shell theory to derive the governing equations of motion for a shell subjected to pressure. To take into account the prestress effects of internal pressure, we use geometric nonlinearity, and to model the follower action of pressure force, we consider the work done by internal pressure during the vibration of the shell. These equations are then specialized to obtain approximate equations presented by previous researchers. We extend this analytical formulation to derive the equivalent forces due to piezoelectric actuators in unimorph and bimorph configurations and include their mass and stiffness effects in the governing equations. A sensor equation is also developed for the shell. The actuator and sensor equations are then written in terms of modal displacements and velocities so as to evaluate their interactions with different vibratory modes. In the second part, we focus on numerical studies related to an inflated torus. At first, we perform a free vibration analysis of the inflated torus using Galerkin's method. We study how different parameters (aspect ratio, internal pressure, and wall-thickness) of the inflated torus affect the natural frequencies and mode shapes of the inflated torus. We compare the results obtained from the theory used in this research with the results from different approximate theories and commercial finite element codes. The results suggest that the use of an accurate shell theory and pressure effect is very important for the vibration analysis of an inflated torus. Next, the modal behaviors of piezoelectric actuator and sensor are analyzed. A detailed study is done in order to understand how the size and location of actuator and sensor affect the modal forces, the modal sensing constants, and the overall performance for all the considered modes. In order to determine the optimal locations and sizes of actuators and sensors, we use a genetic algorithm. Natural frequencies and mode shapes are calculated considering the passive effects of actuators and sensors. Finally, we attempt the vibration control of the inflated torus using the optimally designed actuators and sensors and sliding mode controller/observer. The numerical simulations show that piezoelectric actuators and sensors can be used in the vibration control of an inflatable torus. The robustness properties of the controller and observer against the parameter uncertainty and disturbances are verified.
Ph. D.
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Xue, Kai. "Modal filtering for active control of floor vibration under impact loading." Kyoto University, 2018. http://hdl.handle.net/2433/232024.

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Magee, Warwick R. "Development of an electromagnetic actuator for active vibration control." Thesis, Queensland University of Technology, 1997.

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Jia, Jianhu. "Optimization of piezoelectric actuator systems for vibration control of flexible structures." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39754.

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Actuator placement is a major concern in control system designs. Utilizing piezoelectric actuators increases the complexity of actuator designs, because both actuator location and dimensions need to be considered. A comprehensive study was conducted in this dissertation on the optimization of piezoelectric actuator designs for vibration suppression of flexible structures. The investigation on the optimal piezoelectric actuator designs were grouped into two parts. Part one covered actuator designs when the same number of actuators as the controlled modes are used. Approaches were formed to optimally design piezoelectric actuators which requires least control efforts. In part two of this dissertation, a method named the Weighted Pseudoinverse Method was introduced to deal with the cases in which fewer actuators than the controlled modes are utilized. The weighted pseudoinverse method yields a optimal transformation from modal control forces into the actuator-moments in physical space. Based on the Weighted pseudoinverse method, the piezoelectric actuator designs were optimized to ensure least-control-effort actuator designs. A simply-supported beam was used as an example to demonstrate the effectiveness of the design methods proposed in this dissertation. However, the design methods are applicable to general cases.
Ph. D.
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Books on the topic "Actuator placement for vibration control"

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United States. National Aeronautics and Space Administration., ed. [Actuator placement for active sound and vibration control]: [final report]. [Williamsburg, VA: College of William and Mary, 1997.

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Center, Langley Research, ed. Optimal control of unsteady stokes flow around a cylinder and the sensor/actuator placement problem. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1998.

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Center, Langley Research, ed. Optimal control of unsteady stokes flow around a cylinder and the sensor/actuator placement problem. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1998.

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Book chapters on the topic "Actuator placement for vibration control"

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Sohn, Jung Woo, and Seung Bok Choi. "Optimal Placement of MFC Actuators for Vibration Control of Cylindrical Shell Structure." In Emboding Intelligence in Structures and Integrated Systems, 253–58. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-13-3.253.

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Gawronski, Wodek K. "Actuator and Sensor Placement." In Dynamics and Control of Structures, 100–128. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-0-387-21855-7_7.

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Gawronski, Wodek. "Balanced sensor and actuator placement." In Balanced Control of Flexible Structures, 107–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3540760172_5.

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Tao, Gang, Shuhao Chen, Xidong Tang, and Suresh M. Joshi. "Pole Placement Designs." In Adaptive Control of Systems with Actuator Failures, 123–36. London: Springer London, 2004. http://dx.doi.org/10.1007/978-1-4471-3758-0_6.

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Nagy, A. "Active Vibration Control Using DEAP Actuator." In Mechatronics, 331–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23244-2_41.

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Yem, Vibol, Ryuta Okazaki, and Hiroyuki Kajimoto. "Low-Frequency Vibration Actuator Using a DC Motor." In Haptics: Perception, Devices, Control, and Applications, 317–25. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42324-1_31.

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Takemiya, H., S. Ikesue, T. Ozaki, T. Yamamoto, Y. Fujitsuka, A. Shiraga, and T. Morimitsu. "Environmental vibration control by active piezo-actuator system." In Environmental Vibrations: Prediction, Monitoring, Mitigation and Evaluation (ISEV 2005), 493–98. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003209379-73.

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Stöbener, Uwe, and Lothar Gaul. "Piezoelectric Stack Actuator: FE-Modeling and Application for Vibration Isolation." In Responsive Systems for Active Vibration Control, 253–65. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0483-1_9.

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Shekhar, Shivang, Nitish Sharma, Hemanta Kumar Roy, Anindya Sundar Das, and Jayanta Kumar Dutt. "Vibration Control of Rotor Shaft Systems Using Electromagnetic Actuator." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics, 1415–29. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_116.

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Kalita, Karuna, Sivaramakrishnan Natesan, Gaurav Kumar, and Kari Tammi. "Vibration Control in Electrical Machines Using Built-in Actuator." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics, 1593–603. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_131.

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Conference papers on the topic "Actuator placement for vibration control"

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Späh, Britta, Rudolf Sebastian Schittenhelm, and Stephan Rinderknecht. "Optimal Sensor and Actuator Placement for Active Vibration Control Systems." In ASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ncad2012-0982.

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Locations of sensors and actuators have major impact on the characteristics of control systems. In this paper a procedure for sensor and actuator placement for vibration control systems is presented. Two different performance criteria are used in order to find optimal positions for the system under consideration. One is considering observability and controllability only, the other one includes knowledge about a disturbance and the control objective. Both criteria are applied to a clamped plate resulting in different optimal sensor and actuator positions. The resulting configurations are investigated by comparison of optimal feed forward and H∞ feedback control of the system with identical disturbances and control objectives but different sensor and actuator positions. The required control effort and achieved amplitude reduction are employed to rate the different performance criteria that were used to determine the sensor and actuator positions. It is shown that, by placing sensors and actuators on the basis of an adequate performance criterion, increased control performance in terms of amplitude reduction per control effort is achieved.
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JALIHAL, P., S. UTKU, and B. WADA. "ACTUATOR PLACEMENT IN PRESTRESSED ADAPTIVE TRUSSES FOR VIBRATION CONTROL." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1694.

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Kameyama, Masaki, and Hisao Fukunaga. "Optimal Placement of Sensors and Actuators for Modal Measurement/Control of CFRP Laminated Plates." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-416.

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In this paper, based on the optimal placement of sensors and actuators, the vibration control by using a system of modal sensor and modal actuator with a small number of sensors and actuators is realized for a plate structure. The modal sensor consisting of accelerometers as well as the modal actuator of lead zirconate titanate (PZT) is built up for a CFRP cantilevered plate. The structural vibration control is realized by the independent modal space control based on the linear quadratic regulator (LQR) control theory. Sensors and actuators are optimally placed so that the best accuracy of measurement of modal velocity and the maximum control effect can be acquired. From the numerical and experimental results, it is demonstrated that the optimal placement of sensors and actuators is very important to stabilize a control system when the number of sensors/actuators is limited, and the vibration of plate can be suppressed by the state feedback control for each mode using the modal sensor and actuator optimally designed.
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Doki, Hitoshi, Kazuhiko Hiramoto, Jun Kaido, and Robert E. Skelton. "Actuator Selection for Vibration Control With Control Energy Constraints." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-3832.

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Abstract This paper deals with a sensor/actuator placement problem in design of active vibration control systems for flexible structures. This problem is formulated as a minimization problem of the total energy which is defined as a sum of a kinetic and strain energy in a controlled structure with a constraint of control effort. The inequality constraint on the variance of the closed-loop control effort is adopted to represent the capacity (dynamic range) of the actuator. Using a design algorithm which iteratively tunes the weighting matrix of the quadratic performance index in the LQG problem, the controller which meets these specifications can be synthesized. The optimal location of the sensor/actuator is determined by calculating the total energy for each candidate under several energy constraints of the control effort. The optimal placement of the sensor/actuator depends on the control energy constraint. Simulations and experiments for a cantilevered beam are conducted. These results of the optimization can be used as a guide to the design of active vibration control system.
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Peng, Fujun, Alfred Ng, and Yan-Ru Hu. "Adaptive Vibration Control of Flexible Plate Structures With Actuator Placement Optimization." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41085.

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This paper investigates piezoelectric actuator placement optimization on a rectangular plate structure and the vibration control of the structure. In the first part, an actuator placement optimization method is developed based on maximizing the controllability grammian. It is then implemented using Structuring Analysis in ANSYS Finite Element Analysis Package and Genetic Algorithm. In the second part, a filtered-x LMS-based multi-channel adaptive control is used to suppress vibration response of the plate. Numerical simulations are performed in suppressing tri-sinusoidal response at three points of the plates and the results show the control algorithm is efficient and robust in reducing the plate’s vibration. The results also demonstrate that the developed actuator placement optimization method is effective to reduce the energy required for achieving significant vibration reduction.
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Yuan, Shuqing, and Lihua Xie. "Actuator Placement for Active Vibration Control Systems With External Excitations." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21483.

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Abstract Actuator placement is important to active vibration suppression. It is complex as it concerns many effects. In this paper, a new actuator position optimization criterion is proposed in which the effect of external excitations is considered. The criterion is applied in conjunction with the Independent Modal Space Control method. Effects of different modes are weighted to form a cost function according to their contributions to system dynamic responses, which directly reflect the effects of the external excitations. An example is given to validate the criterion.
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Zhu, Xuegeng, and Thomas E. Alberts. "A Comparison of Placement Choice for Piezoelectric Actuator and Generalized Point Actuator in Active Vibration Control." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0414.

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Abstract A cantilevered beam is used to demonstrate the difference in placement index between piezoelectric actuator and generalized point force actuator. Since the effectiveness of the piezoelectric actuator is dependent upon the curvature of the mode shape, the results proposed for generalized actuator placement do not guarantee good performance for the piezoelectric actuator.
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Zimmerman, David C. "A Darwinian Approach to the Actuator Number and Placement Problem With Nonnegligible Actuator Mass." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0187.

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Abstract The problem of optimal actuator number and placement for the vibration control of large flexible space structures is addressed in this work. The inherent mass of the actuators is integrated in the number and placement algorithm. The algorithm utilizes concepts from genetic programming, which is loosely based on Darwin’s “survival of the fittest” theories. The paper develops the genetic algorithm in the context of the actuator number and placement problem. Examples are presented which demonstrate the genetic algorithm and the effect of actuator mass on the placement and number problem.
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Shih, Hui-Ru, and H. S. Tzou. "Micro-Photodeformation Actions of Photostrictive Actuator Patches Applied to Vibration Control of Cylindrical Shells." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33560.

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The photostricitve actuator is a new class of distributed actuator that can induce non-contact distributed actuation without utilizing hard-wired connections, due to the photodeformation effect. In this paper, active distributed control of flexible cylindrical shells using discrete photostrictive actuators are investigated and the control effectiveness is evaluated. This paper presents a coupled opto-piezothermoelastic shell theory that incorporates photovoltaic, pyroelectric, piezoelectric and thermal effects, and has the capability to accurately predict the response of a shell to a command illumination applied to the photostrictive actuators. Expressions for the forces and moments that represent the action of the actuator patches have been developed. Governing equations are formulated. Solution procedures based on the modal analysis technique are outlined. The detailed actuator control effectiveness is evaluated with respect to actuator placements. It is shown that by properly positioned the actuators the system performance can be improved. Numerical simulation results also show that the membrane control action is more significant than the bending control action.
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Alnuaimi, Mohammed, Abdulaziz BuAbdulla, Tarcísio Silva, Sumaya Altamimi, Dong-Wook Lee, and Mohamed Al Teneiji. "Active Vibration Control of Piezoelectric Beam Using the PID Controller." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70960.

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Abstract Vibration control using piezoelectric materials has been widely investigated over the past decades. Particularly, active controllers achieve greater vibration control over wider frequency ranges than other vibration control techniques. Active controllers make use of sensors, actuators, and control laws. While most researchers focus on improving the control law, investigations on the optimal placement of sensors and actuators remain much less explored. This work presents a simple and quick methodology to obtain the optimal placement of piezoelectric sensors and actuators on different electromechanically coupled systems, without using classical beam or plate structures or limiting assumptions (symmetrical bending, linear strain, etc.). Optimal placement of sensors and actuators is performed based upon two criteria: i) varying the number of piezoelectric layers used for sensing and actuation and ii) varying the position over the structure’s thickness. Each criterion (i and ii) is presented and discussed in a different study case. Results show that as the number of piezoelectric layers increases, vibrations are controlled more efficiently. However, stacking several piezoelectric materials is not easily feasible in practice, leading to a tradeoff between reducing vibrations (using more layers) and ease of assembly. As of criterion ii), optimal placement of piezoelectric sensors and actuators is the farthest possible from the neutral line since sensors generate larger signal output (increased sensor gain), and actuators apply larger momentum on the system reducing more vibrations.
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Reports on the topic "Actuator placement for vibration control"

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DESIGN OF THE DEPLOYABLE-FOLDABLE ACTUATOR AND VIBRATION CONTROL DEVICE BASED ON THE SHAPE MEMORY ALLOYS WITH A TWO-WAY EFFECT. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.306.

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The paper aims at the design method of the space deployable-foldable actuator and vibration control device, and the selected material is the shape memory alloy. These devices can repeatedly adjust the deploy and fold states by changing the temperature, and also present a large energy dissipation to keep the stability of the structures in the vibration control. It can be observed that the fabricated two-way shape memory alloy actuator can present steady fold-deploy procedures more than five times, in which the recoverable rate is higher than 95.83%, and the required time in the complete deploying process is 15 s. Meanwhile, the vibration control device based on the shape memory alloys also gives an excellent performance, the lightweight device is only 315 g, and the vibration in the vertical direction can be limited to the millimeter-level (0.917 mm), it can also endure the repeated loadings in the applications and keep a good operating condition.
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