Rozprawy doktorskie na temat „Flexible structure”
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Guy, Nicolas. "Modèle et commande structurés : application aux grandes structures spatiales flexibles". Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0036/document.
Pełny tekst źródłaIn this thesis, modeling and robust attitude control problems of large flexible space structures are considered. To meet the required pointing performance of future space missions scenarios, we propose to directly optimize a reduced order control law on high order model validation and criteria that directly exploit the model structure. Thus, the work of this thesis is naturally divided into two parts : one part on obtaining a wisely structured dynamic model of the spacecraft to be used in the synthesis step, a second part about getting the law control. This work is illustrated on the example of the academic spring-masses system, which is the simplest representation of a one degree of freedom flexible system. In addition, a geostationary satellite study case is processed to validate developed approaches on a more realistic example of an industrial problem
O'Connor, Joseph. "Fluid-structure interactions of wall-mounted flexible slender structures". Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/fluidstructure-interactions-of-wallmounted-flexible-slender-structures(1dab2986-b78f-4ff9-9b2e-5d2181cfa009).html.
Pełny tekst źródłaYu, Jianbin. "Flexible reinforced pavement structure-sensitivity analysis". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0015/MQ52682.pdf.
Pełny tekst źródłaGiannopapa, Christina-Grigoria. "Fluid structure interaction in flexible vessels". Thesis, King's College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413425.
Pełny tekst źródłaBlinn, Bart A. "Flexlab a flexible structure controls test platform". Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177609627.
Pełny tekst źródłaAneja, Ashish. "Structure-Property Relationships of Flexible Polyurethane Foams". Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/29887.
Pełny tekst źródłaPh. D.
Kaushiva, Bryan D. "Structure-Property Relationships of Flexible Polyurethane Foams". Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28843.
Pełny tekst źródłaPh. D.
Aditya, Riza. "Secure electronic voting with flexible ballot structure". Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16156/1/Riza_Aditya_Thesis.pdf.
Pełny tekst źródłaAditya, Riza. "Secure Electronic Voting with Flexible Ballot Structure". Queensland University of Technology, 2005. http://eprints.qut.edu.au/16156/.
Pełny tekst źródłaThompson, Hugh Patrick George. "Extending crystal structure prediction methods towards flexible molecules". Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708949.
Pełny tekst źródłaParaz, Florine. "Oscillation d'une plaque flexible dans un écoulement". Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4327/document.
Pełny tekst źródłaThe physics of the swimming with a flexible caudal fin is studied experimentally by the means of an elastic plate immersed in a uniform water flow. The leading edge of the plate is forced into a harmonic motion, while its trailing edge responds passively to this actuation. A resonance response in amplitude is demonstrated, revealing a strong interaction between the natural frequencies of the plate and the forcing frequencies. Experimental results suggest a non-trivial role of the forcing amplitude, emphasizing the role of non linearities in this problem. To gain better insight into the origin of these non linearities, a weakly non linear model is developed. We model a quasi two-dimensional plate of zero thickness immersed in a potential flow and subject to a resistive drag-like force. The plate deflection is then decomposed into a forcing heaving mode and natural flexural modes. Predictions of the response in amplitude and frequency to a heave forcing system are then calculated. The frequencies of the resonances, as well as the shapes of the deflection, match the experimental results. The performance of the system measured through the generated thrust, is well predicted by the modelling. The experimental and modelling results presented here show (very) good agreement with the literature. Finally, an analytical optimization is undertaken and potential applications to bio-robotic are suggested
Suckley, Daniel R. "The structure Development High-Resilience Flexible Polyurethane Foam". Thesis, University of Manchester, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518440.
Pełny tekst źródłaDaily, David J. "Fluid-Structure Interactions with Flexible and Rigid Bodies". BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3791.
Pełny tekst źródłaAkkala, James Marcus. "Flow structure and performance of a flexible plunging airfoil". Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2433.
Pełny tekst źródłaAioun, F. "Commande robuste d'une structure flexible garantissant des performances optimales". Paris 11, 1993. http://www.theses.fr/1993PA112200.
Pełny tekst źródłaHui, Shirley. "FlexSADRA: Flexible Structural Alignment using a Dimensionality Reduction Approach". Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1173.
Pełny tekst źródłaWarnakulasuriya, Hapuhennedige Surangith. "Soil structure interaction of buried pipes". Thesis, University of East London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286607.
Pełny tekst źródłaAlgarra, Nicolas Pierre. "Pénétration d'une fibre flexible dans un milieu granulaire dense". Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066500/document.
Pełny tekst źródłaWe study experimentally a fluid/structure interaction between an elastic fiber and a dense granular medium near the jamming transition. In our horizontal setup, a bidimensionnal and dense random packing is interacting with a clamped elastic fiber. The clamped end of the fiber is in translation relative to the the grains while the free end faces initially the grain flux in a penetration geometry before being deflected by grain/fiber interactions. The control parameters of our system are the packing fraction of the medium, the length and the rigidity of the fiber. Our setup allows us to measure the deflected shape of the fiber, the forces exerted by the grains on the fiber (including the drag force) and to follow the reorganizations of the granular medium. Under some experimental conditions, we observed that this system exhibits several regimes of evolution. For low and large fiber deflections, the system evolves stochastically as a consequence of the random nature of the granular medium : respectively small fluctuations of the fiber around its equilibrium position and sudden events of unlozding of the fiber in flexion associated to granular avalanches. The transition between those two regimes is associated with a symmetry breaking that affects the granular medium as well as the fiber. In a first part, we study how the fiber deflection is influenced by the control parameters, particularly by the distance to jamming. In a second part, we show that a packing fraction asymmetry appears in the granular medium when the fiber is deflected enough. In a third part, we try to understand the evolution of the measured forces using numerical simulations of the Elastica on a constrained beam. Finally, we propose a model of compaction of the grains by the fiber that is in a good aggreement with the experimental evolution of the system. An application of this thesis is the understanding of the mechanisms involved in the penetration of a root or a beam in a granular soil
Kerr, Murray. "Robust control of an articulating flexible structure using MIMO QFT /". [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17449.pdf.
Pełny tekst źródłaMao, Zhu. "Comparison of shape reconstruction strategies in a complex flexible structure". Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1450351.
Pełny tekst źródłaTitle from first page of PDF file (viewed April 28, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 53-55).
Lin, Yeong Ching. "Controlling a large flexible structure to mimic a rigid one". Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185155.
Pełny tekst źródłaSchwellnus, Adrian. "Linear-Rational Term Structure Models With Flexible Level-Dependent Volatility". Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29215.
Pełny tekst źródłaDe, Greef Aline. "Towards medical flexible instruments: a contribution to the study of flexible fluidic actuators". Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210073.
Pełny tekst źródła• A literature review of these actuators has been established. It has allowed to identify the different types of motion that these actuators can develop as well as the design principles underlying. This review can help to develop flexible instruments based on flexible fluidic actuators.
• A test bench has been developed to characterize the flexible fluidic actuators.
• A interesting measuring concept has been implemented and experimentally validated on a specific flexible fluidic actuator (the "Pneumatic Balloon Actuator", PBA). Ac- cording to this principle, the measurements of the pressure and of the volume of fluid supplied to the actuator allow to determine the displacement of the actuator and the force it develops. This means being able to determine the displacement of a flexible fluidic actuator and the force it develops without using a displacement sensor or a force sensor. This principle is interesting for medical applications inside the human body, for which measuring the force applied by the organs to the surgical tools remains a problem.
The study of this principle paves the way for a lot of future works such as the implemen- tation and the testing of this principle on more complex structures or in a control loop in order to control the displacement of the actuator (or the force it develops) without using a displacement or a force sensor.
• A 2D-model of the PBA has been established and has helped to better understand the physics underlying the behaviour of this actuator.
• A miniaturization work has been performed on a particular kind of flexible fluidic actu- ator: the Pleated Pneumatic Artificial Muscle (PPAM). This miniaturization study has been made on this type of actuator because, according to theoretical models, minia- turized PPAMs, whose dimensions are small enough to be inserted into MIS medical instruments, could be able to develop the forces required to allow the instruments to perform most surgical actions. The achieved miniaturized muscles have a design similar to that of the third generation PPAMs developed at the VUB and present a total length of about 90 mm and an outer diameter at rest of about 15 mm. One of the developed miniaturized PPAMs has been pressurized at p = 1 bar and it was able to develop a pulling force F = 100 N while producing a contraction of 4 %.
Propositions have been made regarding a further miniaturization of the muscles.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Lelong, Alexandra. "Etude expérimentale du comportement hydroélastique d'une structure flexible pour différents régimes d'écoulement". Thesis, Brest, 2016. http://www.theses.fr/2016BRES0048/document.
Pełny tekst źródłaThis work deals with an experimental analysis of a flexible and light lifting profile for various flow conditions, including cavitation. An experimental protocol was set up to study a flexible NACA 0015 made of polyoxymethylene (POM) and compare its behaviour with a foil made of steel, which is considered as rigid. The forces, strains, stresses and vibrations of the foils were measured, as well as the velocity field. Moreover, a vibratory analysis was performed in cavitating flow. The flexible foil behaves like a built-in beam : the deformations corresponds to predictions from the beam theory, with high bending and low twisting. These deformations imply lower lift and higher drag compared to the rigid foil. The vortex shedding frequency appears on the vibration spectra near stall. It increases with flow velocity and leads to a decrease of the natural bending frequency. But flexibility involves lower natural frequencies : the first bending frequency of the flexible foil is 3.5 times lower than the rigid one. This allows lock-in between the first bending frequency of the flexible foil and the vortex shedding frequency. Lock-in occurs in cavitating flows too : when cavitation becomes unstable, it oscillates with a frequency close to the bending natural frequency of the flexible foil. This lock-in ends when the cavitation number is low enough, what leads to a decrease of the cavitation oscillation frequency. In those conditions, the added mass of the flexible foil does not decrease with the cavitation number as the added mass of the rigid foil
Carstoiu, Benjamin Jean. "Material Fluidity: Sense - Will - Form, Alexandria, Virginia Maritime Museum". Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/30834.
Pełny tekst źródłaMaster of Architecture
Harrington, William Burke. "Experimental verification of an optimal linear controller for a flexible structure". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA305316.
Pełny tekst źródła"December 1995." Thesis advisor(s): B.N. Agrawal. Includes bibliographical references. Also available online.
Gatzhammer, Bernhard [Verfasser]. "Efficient and Flexible Partitioned Simulation of Fluid-Structure Interactions / Bernhard Gatzhammer". München : Verlag Dr. Hut, 2015. http://d-nb.info/1067708928/34.
Pełny tekst źródłaFirthriyah, Nural Hidayati. "Structure Development and Properties of Flexible Polyurethane Foam-Layered Silicate Nanocomposites". Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503646.
Pełny tekst źródłaCastellanos, Diana C. "Analysis and design of a flexible structure for benchmaking robust controllers". Honors in the Major Thesis, University of Central Florida, 1993. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/111.
Pełny tekst źródłaBachelors
Engineering
Computer Engineering
Chaudhari, Devendra. "Experiments on the vibration control of a flexible structure using FPGA". Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10014956.
Pełny tekst źródłaThe goal of this project is to develop, implement and test experimentally a state-feedback controller for the vibration control of a flexible structure, using an Active Mass Damper (AMD). Based on a previously developed model of the structure, a state-feedback controller with full observer has been implemented in the LabView (Laboratory Virtual Instrument Engineering Workshop) computational environment using the myRIO FPGA board (Field Programmable Gate Array). Experimental results show that the controller improves the structural response significantly by reducing the amplitude and duration of the response when the structure is subject to random earthquake-like excitations.
Reichard, Karl Martin. "Distributed-effect modal domain optical fiber senors for flexible structure control". Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39420.
Pełny tekst źródłaWynn, Robert H. "The control of flexible structure vibrations using a cantilevered adaptive truss". Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39949.
Pełny tekst źródłaChun, Sangeon. "Nonlinear Fluid-Structure Interaction in a Flexible Shelter under Blast Loading". Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/29849.
Pełny tekst źródłaPh. D.
Liu, Yanan. "Dynamics of flexible and Brownian filaments in viscous flow". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC196/document.
Pełny tekst źródłaThe dynamics of individual flexible filament in a viscous flow is the key to deciphering the rheolog- ical behavior of many complex fluids and soft materials. It also underlies a wealth of biophysical processes from flagellar propulsion to intracellular streaming. This thesis presents systematic exper- iments to investigate the dynamics of flexible and Brownian filaments in viscous flows. Biopolymer actin has been chosen to be our experimental model filament: its typical length can be varied from 1 to 100 μm, it is flexible at these dimensions with a persistence length in the order of 20μm, it is Brow- nian due to its small diameter with bending fluctuations and it can be labelled by fluorescent dye. Microfluidic channels and flow control systems are combined to optical microscope with automated stage to carry out well-controlled experiments on the diverse dynamics of actin filaments in shear flow and pure straining flow. In shear flow, simulations matching the experimental conditions have also been performed using inextensible Euler-Bernoulli beam theory and non-local slender body hy- drodynamics in the presence of thermal fluctuations and agree quantitatively with the experimental results. We demonstrate that filament dynamics in this flow geometry is primarily governed by a dimension- less elasto-viscous number comparing viscous forces to elastic forces with thermal fluctuations only playing a secondary role. We present a complete characterization of the different modes of defor- mation undergone by the filament while rotating as well as of the transitions between these different modes. In pure straining flow, we opt to use an optimized hyperbolic channel to allow long resi- dence time at constant strain rate to be applied. We directly observe the suppression of transverse fluctuations in the extensional part of the hyperbolic channel while we observe, in the compressive part of the flow, the formation of three dimensional helical structures subsequent to the initial buck- ling of the filament. Finally, this thesis manuscript also reports on experimental developments to fabricate suspensions of actin filament with a narrow distribution of lengths and on preliminary re- sults on shear-thinning effects. All together the results presented here pave the way of future studies towards the understanding of filament dynamics in more complex flows, as Poiseuille flows or oscil- latory flows, as well as towards establishing the link between filament deformations and rheological response in dilute suspensions of flexible Brownian filaments, which remains nearly unexplored from an experimental point of view
Cole, Robert Edward. "Numerical Modeling of Air Cushion Vehicle Flexible Seals". Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/83828.
Pełny tekst źródłaPh. D.
Madani, Kermani Seyed Hossein. "Application of immersed boundary method to flexible riser problem". Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/9605.
Pełny tekst źródłaKourmoulis, Panayiotis Konstantinos. "Parallel processing in the simulation and control of flexible beam structure systems". Thesis, University of Sheffield, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359846.
Pełny tekst źródłaJiang, Jian Hua M. Eng Massachusetts Institute of Technology. "Performance evaluation of innovative toggle brace damper for flexible structure seismic upgrade". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99602.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 72-73).
Amplifying the motion of viscous dampers has been recognized as an effective solution to mitigate structural response to wind and seismic excitation. Motion amplification devices are designed to amplify a small interstory drift to intensify the stroke of the dampers attached. The efficiency of such devices relies on their geometric configurations in addition to the stiffness of the support elements. This thesis focuses on the seismic performance evaluation of the toggle brace frame configuration employed for seismic upgrade. In order to carry out a performance evaluation of the toggle brace damper, a practical approach to performance-based earthquake engineering (PBEE) is presented in this study. The approach considers the seismic hazard, structural response, resulting damage, and repair costs associated with restoring the building to its original condition using a fully probabilistic analysis. The procedure is organized to be consistent with conventional building designs, construction, and analysis practices so that it can be readily incorporated into a design process. A nine-story moment frame located in downtown Los Angeles based on pre-Northridge design code is subjected to PBEE evaluation in this study. The performance of the structural frame is assessed by conducting a non-linear dynamic time history analysis in both cases, with and without the inclusion of the toggle brace damper. The results and comparisons are detailed in the chapters of this thesis.
by Jian Hua Jiang.
M. Eng.
Olivier, Mathieu. "A fluid-structure interaction partitioned algorithm applied to flexible flapping wing propulsion". Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25395.
Pełny tekst źródłaThis thesis concerns the study of flexible flapping wings and the related numerical methods. It thus contains two distinct themes. The first contribution is the implementation of an efficient fluid-structure interaction algorithm that handles the interaction of an elastic solid undergoing large displacement with an incompressible fluid. The algorithm is based on the partitioned approach and allows state-of-the-art fluid and structural solvers to be used. Stabilization with artificial compressibility in the fluid continuity equation along with judicious algorithmic choices make the method suitable to be used with SIMPLE or PISO projection fluid solvers. The second contribution is the study of the effects of wing flexibility in flapping flight. The different regimes, namely inertia-driven and pressure-driven wing deformations are presented along with their effects on the topology of the flow and, eventually, on the performance of the flapping wing in propulsion regime. It is found that pressure-driven deformations can increase the thrust efficiency if a suitable amount of flexibility is used. Thrust increases are also observed when small pitching amplitude cases are considered. On the other hand, inertia-driven deformations generally deteriorate aerodynamic performances of flapping wings unless meticulous timing is respected, making them less practical. It is also shown that wing flexibility can act as a passive pitching mechanism while keeping decent thrust and efficiency. Lastly, a freely-moving flexible flapping wing model is presented. It is shown that the deviation motion found in natural flyers is a consequence of a feathering mechanism.
Liu, Ding. "On intrinsically live structure and deadlock control of generalized Petri nets modeling flexible manufacturing systems". Thesis, Paris, CNAM, 2015. http://www.theses.fr/2015CNAM1004/document.
Pełny tekst źródłaAs an indispensable component of contemporary advanced manufacturing systems, flexible manufacturing systems (FMSs) possess flexibility and agility that traditional manufacturing systems lack. An FMS usually consists of picking and placing robots, machining centers, logistic systems, and advanced control systems. Some of them can be recognized as its shared resources, which result in its flexibility but may lead to its deadlocks. As a classic problem in resource allocation systems, deadlocks may arise in a fully automated FMS and bring about a series of disturbing issues, from degraded and deteriorated system productivity and performance to low utilization of some critical and expensive resources and even long system downtime. Therefore, the analysis of and solution to deadlock problems are imperative for both a theoretical investigation and practical application of FMSs. Deadlock-freedom means that concurrent produc-tion processes in an FMS will never stagnate. Furthermore, liveness, another significant behavioral property, means that every production process can always be finished. Liveness implies deadlock-freedom, but not vice versa. The liveness-enforcement is a higher requirement than deadlock-freedom.From the perspective of the behavioral logic, the thesis focuses on the intrinsicallylive structures and deadlock control of generalized Petri nets modeling flexible manufacturing systems. Being different from the existing siphon-based methods, a concept of intrinsically live structures becomes the starting point to design, analyze, and optimize a series of novel deadlock control and liveness-enforcing methods in the work.The characteristics and essence of intrinsically live structures are identified and derived from subclasses of generalized Petri nets modeling FMSs with complex resource usage styles. In addition, the numerical relationship between initial markings and weights of connecting arcs is investigated and used to design restrictions that ensure the intrinsical liveness of global or local structures.With the structural theory, graph theory, and number theory, the thesis work achieves the goals of deadlock control and liveness-enforcement.The proposed methods are superior over the traditional siphon-based oneswith a lower computational complexity (or a higher computational efficiency),a lower structural complexity, and a better behavioral permissiveness of the controlled system
Gomes, Jorge Miguel Pereira [Verfasser], i Franz [Akademischer Betreuer] Durst. "Fluid-structure interaction-induced oscillation of flexible structures in uniform flows. / Jorge Miguel Pereira Gomes. Betreuer: Franz Durst". Erlangen : Universitätsbibliothek der Universität Erlangen-Nürnberg, 2012. http://d-nb.info/1024406776/34.
Pełny tekst źródłaChalvet, Vincent. "Conception, réalisation et commande d'un microrobot numérique, planaire, non-redondant et en technologie MEMS". Phd thesis, Université de Franche-Comté, 2013. http://tel.archives-ouvertes.fr/tel-00913321.
Pełny tekst źródłaNaito, J., Z. Y. Tan, M. Shikida, M. Hirota i K. Sato. "Characteristics of On-Wall In-Tube Flexible Thermal Flow Sensor at Wrap Pipe Condition". IEEE, 2007. http://hdl.handle.net/2237/9560.
Pełny tekst źródłaYi, Tianyi. "Experimental Investigation and Numerical Simulation of an Unreinforced Masonry Structure with Flexible Diaphragms". Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5149.
Pełny tekst źródłaSato, Kazuo, Mitsuhiro Shikida, Hirotaka Hida i Jeong Il Lee. "Microfabricated 3D Flexible Tactile Sensor with Table-shaped Structure for Intelligent Robot Fingers". IEEE, 2011. http://hdl.handle.net/2237/14445.
Pełny tekst źródłaMichelsons, A. M. "Turin between Fordism and flexible specialization : industrial structure and social change, 1970-85". Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233971.
Pełny tekst źródłaNewman, Scott M. "Active damping control of a flexible space structure using piezoelectric sensors and actuators". Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23517.
Pełny tekst źródłaThis thesis details the experimental analysis of an active damping control technique applied to the Naval Postgraduate School's Flexible Spacecraft Simulator using piezoceramic sensors and actuators. The mass property of the flexible arm is varied to study the frequency effects on the Positive Position Feedback (PPF) algorithm. Multi-modal dynamics response is analytically studied using a finite-element model of a cantilevered beam while under the influence of three different control laws: a basic law derived rom the Lyapunov Stability Theorem, PPF and Strain Rate Feedback (SRF). The advantages and disadvantages of using PPF and SRF for active damping control are discussed.
Herman, Deborah Ann. "Discrete and continuous dynamics modeling of a mass moving on a flexible structure". Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/42526.
Pełny tekst źródłaYU, YU-CONG, i 余裕琮. "Variable structure control of large-scale flexible structures". Thesis, 1988. http://ndltd.ncl.edu.tw/handle/67816930879393486046.
Pełny tekst źródłaKanchanasaratool, Narongsak. "Control of flexible structure". Phd thesis, 2003. http://hdl.handle.net/1885/148681.
Pełny tekst źródła