Thematische Bibliographien / Actice force measurement

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Auswahl der wissenschaftlichen Literatur zum Thema „Actice force measurement“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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Zeitschriftenartikel zum Thema "Actice force measurement"

Owusu-Ansah, Prince, Yefa Hu, and Rhoda Afriyie Mensah. "Active Magnetic Bearing as a Force Measurement System." International Journal of Materials, Mechanics and Manufacturing 5, no. 3 (2017): 209–12. http://dx.doi.org/10.18178/ijmmm.2017.5.3.320.

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Marshall, J. T., M. E. F. Kasarda, and J. Imlach. "A Multipoint Measurement Technique for the Enhancement of Force Measurement With Active Magnetic Bearings." Journal of Engineering for Gas Turbines and Power 125, no. 1 (2002): 90–94. http://dx.doi.org/10.1115/1.1519268.

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Active magnetic bearings (AMBs) have the unique capability to act concurrently as support bearings and load cells for measuring shaft forces. Current state-of-the-art methods for force measurement rely on models with limited accuracy due to effects which are difficult to characterize such as fringing, leakage, and variations in material properties. In addition, these effects may be a function of actual air gaps which are difficult to determine in a dynamic operating environment. This paper discusses a new force measurement methodology that inherently accounts for these types of effects and oth

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Baun, D. O., and R. D. Flack. "A Plexiglas Research Pump With Calibrated Magnetic Bearings/Load Cells for Radial and Axial Hydraulic Force Measurement." Journal of Fluids Engineering 121, no. 1 (1999): 126–32. http://dx.doi.org/10.1115/1.2821992.

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A research pump intended for both flow visualization studies and direct measurement of hydrodynamic radial and axial forces has been developed. The impeller and the volute casing are constructed from Plexiglas which facilitates optical access for laser velocimetry measurements of the flow field both inside the impeller and in the volute casing. The pump housing is designed for flexibility allowing for each interchange of impellers and volute configurations. The pump rotor is supported by three radial magnetic bearings and one double acting magnetic thrust bearing. The magnetic bearings have be

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Di Terlizzi, I., M. Gironella, D. Herraez-Aguilar, et al. "Variance sum rule for entropy production." Science 383, no. 6686 (2024): 971–76. http://dx.doi.org/10.1126/science.adh1823.

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Entropy production is the hallmark of nonequilibrium physics, quantifying irreversibility, dissipation, and the efficiency of energy transduction processes. Despite many efforts, its measurement at the nanoscale remains challenging. We introduce a variance sum rule (VSR) for displacement and force variances that permits us to measure the entropy production rate σ in nonequilibrium steady states. We first illustrate it for directly measurable forces, such as an active Brownian particle in an optical trap. We then apply the VSR to flickering experiments in human red blood cells. We find that σ i

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Kurihara, Kazue. "Surface forces measurement for materials science." Pure and Applied Chemistry 91, no. 4 (2019): 707–16. http://dx.doi.org/10.1515/pac-2019-0101.

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Abstract This article reviews the surface forces measurement as a novel tool for materials science. The history of the measurement is briefly described in the Introduction. The general overview covers specific features of the surface forces measurement as a tool for studying the solid-liquid interface, confined liquids and soft matter. This measurement is a powerful way for understanding interaction forces, and for characterizing (sometime unknown) phenomena at solid-liquid interfaces and soft complex matters. The surface force apparatus (SFA) we developed for opaque samples can study not only

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De, Pra Yuri, Stefano Papetti, Federico Fontana, and Emidio Tiberi. "An Open-Source Robotic Tool for the Simulation of Quasi-Static Finger Pressing on Stationary and Vibrating Surfaces." IEEE Transactions on Haptics 14, no. 2 (2021): 273–78. https://doi.org/10.5281/zenodo.6606252.

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The Bogus Finger is a remote-controllable tool for simulating vertical pressing forces of various magnitude as exerted by a human finger. Its main application is the characterization of haptic devices under realistic active touch conditions. The device is released as an open-source hardware and software DIY project that can be easily built using off-the-shelf components. We report the characterization of the quasi-static properties of the device, and validate its dynamic response to pressing on a vibrating surface by comparison with human fingers. The present prototype configuration accurately

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Hoh, N. J., and R. N. Zia. "Hydrodynamic diffusion in active microrheology of non-colloidal suspensions: the role of interparticle forces." Journal of Fluid Mechanics 785 (November 16, 2015): 189–218. http://dx.doi.org/10.1017/jfm.2015.602.

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Hydrodynamic diffusion in the absence of Brownian motion is studied via active microrheology in the ‘pure-hydrodynamic’ limit, with a view towards elucidating the transition from colloidal microrheology to the non-colloidal limit, falling-ball rheometry. The phenomenon of non-Brownian force-induced diffusion in falling-ball rheometry is strictly hydrodynamic in nature; in contrast, analogous force-induced diffusion in colloids is deeply connected to the presence of a diffusive boundary layer even when Brownian motion is very weak compared with the external force driving the ‘probe’ particle. T

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Nudehi, Shahin, Ranjan Mukherjee, and Steven W. Shaw. "Active Vibration Control of a Flexible Beam Using a Buckling-Type End Force." Journal of Dynamic Systems, Measurement, and Control 128, no. 2 (2005): 278–86. http://dx.doi.org/10.1115/1.2192836.

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In this paper, we explore the use of end forces for vibration control in structural elements. The process involves vibration measurement and observer-based estimation of modal amplitudes, which are used to determine when to apply an end load such that it will remove vibration energy from the structure. For this study, we consider transverse vibration of a cantilever beam with a buckling-type end load that can be switched between two values, both of which are below the buckling load. The stability of the control system is proven using Lyapunov stability theory and its effectiveness is demonstra

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Sharp, Andrew A., Blake W. Cain, Joanna Pakiraih, and James L. Williams. "A system for the determination of planar force vectors from spontaneously active chicken embryos." Journal of Neurophysiology 112, no. 9 (2014): 2349–56. http://dx.doi.org/10.1152/jn.00423.2014.

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Generally, a combination of kinematic, electromyographic (EMG), and force measurements are used to understand how an organism generates and controls movement. The chicken embryo has been a very useful model system for understanding the early stages of embryonic motility in vertebrates. Unfortunately, the size and delicate nature of embryos makes studies of motility during embryogenesis very challenging. Both kinematic and EMG recordings have been achieved in embryonic chickens, but two-dimensional force vector recordings have not. Here, we describe a dual-axis system for measuring force genera

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Bugenhagen, Bernhard Eberhard Christian, and Annika Baumann. "An Integrated New Method for the Characterisation of Thickness Changes in Battery Active Materials during Cyclisation Under Pressure." ECS Meeting Abstracts MA2024-01, no. 2 (2024): 243. http://dx.doi.org/10.1149/ma2024-012243mtgabs.

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Measuring thickness-changes in a battery stack (dilation) during cyclisation is paramount for the characterisation of chemo-mechanical properties of battery materials. A variety of approaches to achieve these measurements is available, either for measuring the whole stack or individual active materials. Another topic of great interest is the cyclisation of batteries under an applied pressure. These pressures range from a few kPa to hundreds of MPa. Especially the research of solid-state battery materials requires measurements of electrochemical properties under pressure. In light of this, char

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Dissertationen zum Thema "Actice force measurement"

Cailliez, Jonathan. "Contributions à la modélisation et la commande de capteurs de forces actifs pour la méso et micro-robotique." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS278.

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Cette thèse porte sur le développement d’une instrumentation originale et présentant des performances au-delà de l’état de l’art pour la caractérisation et la mesure de forces aux petites échelles. Les travaux présentés couvrent la mesure d’une large gamme de forces mises en jeu en méso et micro-robotique, allant des forces intermoléculaires de l’ordre de quelques µN à des forces de l’ordre du Newton. Le point central réside dans le développement et la mise en œuvre de capteurs basés sur une technologie active particulièrement adaptée pour la caractérisation de forces à gradient variable grâce

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Marshall, Jeremy T. "A Multi-Point Measurement Technique for the Enhancement of Force Measurement with Active Magnetic Bearings (AMB)." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32410.

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Active magnetic bearings (AMBs) have the ability to act concurrently as support bearings and as load sensing measurement tools. Previous work in the area of AMB force measurement has relied upon basic magnetic equations requiring knowledge of coil currents and air gap lengths. Some researchers have utilized magnetic flux probes to eliminate the need for air gap measurements, but these are limited by physical size constraints and require complex hardware. This thesis presents a new method for measuring forces with AMBs that utilizes multiple current pairs with no gap measurement to provide a

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Prins, Robert Jack. "System Identification and Calibration Techniques for Force Measurement in Active Magnetic Bearings." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/30117.

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Many processes involving rotating machinery could benefit from the continuous feedback of force applied to the bearings that support the machinery. Such a system could be used to provide diagnostics for process monitoring in a manufacturing application or to provide information for machine health monitoring. Active Magnetic Bearings (AMBs) have the capability to act concurrently as a shaft force sensor and support bearing. This capability stems from the AMB's control system, which is designed to maintain a specific rotor position, regardless of forces acting on the rotor. Researchers have demo

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Blumber, Eric Joseph. "Testing of a Magnetically Levitated Rocket Thrust Measurement System Demonstrator for NASA." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/33753.

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Existing thrust measurement systems (TMSs) at NASA Stennis Space Center use strain gauges and flux plates to measure forces produced by a test article. Alignment and calibration can take two weeks or more every time a piece of hardware or test article is changed. Cross axis loading is also problematic because it is impossible to perfectly align the flex plates and strain gauges in the thrust direction. In response to these problems, a magnetically levitated thrust measurement system has been proposed and a 300lb capacity demonstrator has been designed and built. In this design, the magneti

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Bordovsky, Patrik, Katharina Schmitz, and Hubertus Murrenhoff. "CFD Simulation and Measurement of Flow Forces Acting on a Spool Valve." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200318.

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Directional control valves are widely used in hydraulic systems to control the flow direction and the flow rate. In order to design an actuator for such a valve a preliminary analysis of forces acting on the spool is necessary. The dominant axial force is the so called steady flow force, which is analysed within this study. For this purpose a 2/2-way spool valve with a sharp control edge was manufactured and investigated. CFD simulations were carried out to visualize the fluid flow inside the valve. The measured and simulated axial forces and pressure drops across the test valve are compared a

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Walther, Mario. "Entwicklung und Evaluierung eines systematischen Vorgehens zur Erfassung von Aktionskräften in der Automobilproduktion." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-199247.

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Aktionskräfte stellen wesentliche Risikofaktoren für die Entstehung von Erkrankungen im Finger-, Hand- und Armbereich dar. Daher ist die Erfassung und Analyse von Aktionskräften ein wichtiger Bestandteil der ergonomischen Bewertung von Arbeitsplätzen. Zur Erfassung von Aktionskräften, insbesondere in der Automobilproduktion, existiert bisher jedoch weder eine einheitliche noch eine systematische Vorgehensweise. Es mangelt an konkreten Forschungserkenntnissen über den Messaufbau, die Messdurchführung und die Messauswertung von Kraftfällen. In der vorliegenden Arbeit wird deshalb ein erster Schr

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Brunner, Claudia. "Origin and Spatial Distribution of Forces in Motile Cells." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-68063.

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Die selbständige, gerichtete Bewegung von biologischen Zellen ist eine der grundlegendsten und komplexesten Erscheinungen der Natur. In höher entwickelten Lebewesen spielt die Zellbewegung eine wichtige Rolle, z.B. bei der Entwicklung des Organismus, bei der Funktion des Immunsystems aber auch bei der Metastase von Krebszellen. Die physikalischen Prozesse die dieser Fähigkeit zugrunde liegen, sind im Fokus dieser Arbeit. Um besser zu verstehen welche Prozesse im Einzelnen und in welcher Kombination den Zellen erlauben sich gerichtet fortzubewegen, wurde in der vorliegenden Arbeit ein represent

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Allard, Antoine. "Studying in vitro the effect of actin dynamics on membrane tubes Mapping and modeling the nanomechanics of bare protein-coated lipid nanotubes Actin modulates shape and mechanics of tubular membranes Actin dynamics drive cell-like membrane deformation Fluctuations of a membrane nanotube revealed by high-resolution force measurements." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASE003.

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Les propriétés mécaniques des nanotubes membranaires (sans la présence du cytosquelette), en particulier la force nécessaire pour les former et les maintenir, sont maintenant bien comprises. Par contre, bien que dans la cellule les nanotubes soient souvent couplés à l’actine, son mécanisme d’action sur de telles structures est inconnu. L’objectif de cette thèse est donc de comprendre comment la dynamique de polymérisation de l’actine affecte la croissance et la stabilité des nanotubes de membrane et contribue à leur scission. Le projet consistera à adresser deux questions principales : - comme

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Denis, Dieumet. "Contribution à la modélisation et à la commande de robots mobiles reconfigurables en milieu tout-terrain : application à la stabilité dynamique d'engins agricoles." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22565/document.

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La thématique étudiée dans ce mémoire est axée sur la préservation de la stabilité dynamique de véhicules évoluant en environnement naturel. En effet, la mobilité en milieu tout-terrain est une activité particulièrement pénible et dangereuse en raison de la nature difficile de l'environnement de conduite et de la reconfigurabilité des machines. Le caractère changeant et incertain des interactions rencontrées entre des véhicules à dynamique complexe et variable et leur environnement entraîne régulièrement des risques accrus de renversement et/ou de perte de contrôle (dévalement, dérapage déclen

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Čmiel, Vratislav. "Optické měření elektromechanických projevů srdečních buněk." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-261217.

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Dissertation is focused on the application of optical measurement methods using techniques of optical microscopy and fluorescence microscopy in measurements of electromechanical characteristics of isolated cardiac cells and clusters of differentiated cardiomyocytes. The first proposed method uses a practical combination of fluorescence microscopy equipped with fluorescent fast and high-resolution camera and atomic force microscopy for simultaneous measurement of calcium transients and contraction of cardiomyocyte clusters. The signals obtained undergoes filtration, processing and analysis. Res

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Bücher zum Thema "Actice force measurement"

Furst, Eric M., and Todd M. Squires. Microrheology. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199655205.001.0001.

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We present a comprehensive overview of microrheology, emphasizing the underlying theory, practical aspects of its implementation, and current applications to rheological studies in academic and industrial laboratories. Key methods and techniques are examined, including important considerations to be made with respect to the materials most amenable to microrheological characterization and pitfalls to avoid in measurements and analysis. The fundamental principles of all microrheology experiments are presented, including the nature of colloidal probes and their movement in fluids, soft solids, an

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Alvesson, Mats, Yiannis Gabriel, and Roland Paulsen. Recovering Meaning Through Policy Changes. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198787099.003.0008.

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This chapter examines how wider social forces, including globalization, neo-liberal economics, and widening participation in higher education shape government policies, and how much space these allow for academics to pursue meaningful and socially useful research. It assesses how various research evaluation schemes can be made more effective and meaningful, and how they may encourage more relevant research in the social sciences. The chapter addresses the use of bibliometrics (citations indices) and measurements aimed at assessing the impact of academic research. It also examines how teaching

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Skiba, Grzegorz. Fizjologiczne, żywieniowe i genetyczne uwarunkowania właściwości kości rosnących świń. The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 2020. http://dx.doi.org/10.22358/mono_gs_2020.

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Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones a

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Buchteile zum Thema "Actice force measurement"

Milivinti, M., M. Amadini, F. Ballo, M. Gobbi, and G. Mastinu. "Force Sensors for the Active Safety of Road Vehicles." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70392-8_132.

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AbstractForce and moment measurement within road vehicles plays a break-through role in automotive engineering. Both wheel force transducers and instrumented hub carriers are considered in the paper. Both technologies have advantages and disadvantages. Active safety systems (ABS, ESP, up to full automated driving) are expected to be impacted by the measurement of forces and moments at the wheels. Friction potential evaluation and driver model development and monitoring are major field of research. Force and moment measurement technology may also be exploited for lightweight construction purpos

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Ştefănescu, Dan Mihai. "Measurement of the Axial Loads Transmitted to the Foundation by High Voltage Circuit Breakers When Acting." In Handbook of Force Transducers. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35322-3_11.

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Honchar, Natalia, Oleksiy Kachan, Dmytro Stepanov, Mark Kuchuhurov, and Olena Khavkina. "Measurement of Non-rigid Tools Action Force During Finishing." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93587-4_3.

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van Mastrigt, R., J. J. Glerum, and R. Schot. "Measurement of passive and active force in single isolated smooth muscle cells." In Biomechanics of Active Movement and Division of Cells. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78975-5_24.

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Schrangl, Lukas, Janett Göhring, Florian Kellner, Johannes B. Huppa, and Gerhard J. Schütz. "Measurement of Forces Acting on Single T-Cell Receptors." In Methods in Molecular Biology. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3834-7_11.

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Ikeya, Yuta, Koji Fukagata, Noriaki Ichijo, Masakazu Hasegawa, and Shinsuke Matsuno. "Measurement and Control of Forces Acting on a Solar Panel." In Springer Proceedings in Physics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30602-5_73.

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Wagner, Christian, Wataru Tsunoda, Tobias Berninger, Thomas Thümmel, and Daniel Rixen. "Estimation of Rotordynamic Seal Coefficients Using Active Magnetic Bearing Excitation and Force Measurement." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91217-2_1.

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Kataoka, Hiroyuki, Toshikatsu Washio, Kiyoyuki Chinzei, Kazuyuki Mizuhara, Christina Simone, and Allison M. Okamura. "Measurement of the Tip and Friction Force Acting on a Needle during Penetration." In Medical Image Computing and Computer-Assisted Intervention — MICCAI 2002. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45786-0_27.

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McCauley, Micah J., Joha Joshi, Nicole Becker, et al. "Quantifying ATP-Independent Nucleosome Chaperone Activity with Single-Molecule Methods." In Single Molecule Analysis. Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-3377-9_2.

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AbstractThe dynamics of histone-DNA interactions govern chromosome organization and regulates the processes of transcription, replication, and repair. Accurate measurements of the energies and the kinetics of DNA binding to component histones of the nucleosome under a variety of conditions are essential to understand these processes at the molecular level. To accomplish this, we employ three specific single-molecule techniques: force disruption (FD) with optical tweezers, confocal imaging (CI) in a combined fluorescence plus optical trap, and survival probability (SP) measurements of disrupted

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Parker, Francine, Eulashini Chuntharpursat-Bon, Justin E. Molloy, and Michelle Peckham. "Using FRET to Determine How Myo10 Responds to Force in Filopodia." In Mechanobiology. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-45379-3_4.

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Abstract.Myosin 10 (Myo10) is an actin-based molecular motor that is essential for filopodia formation and likely senses tension through interactions with integrins in filopodial tips. It possesses a single α-helical (SAH) domain at the end of its canonical lever, which amplifies the movement of the motor. We have shown the SAH domain can contribute to lever function and possesses the properties of a constant force spring. Here we investigate whether the SAH domain plays a role in tension sensing and whether it becomes extended under load at the filopodial tip. Previously, we found that removi

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Konferenzberichte zum Thema "Actice force measurement"

Liang, Xingyu, Haoyang Liu, and Nan Xiao. "Direct Measurement Vascular Interventional Surgery Force Feedback Sensor Model Based on Active Bending of the Guidewire." In 2024 International Conference on Advanced Robotics and Mechatronics (ICARM). IEEE, 2024. http://dx.doi.org/10.1109/icarm62033.2024.10715758.

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Walther, Carolyn, Vinod Lakshminarayan, David Coleman, and Moble Benedict. "Experimental and Computational Studies to Understand Unsteady Aerodynamics of Cycloidal Rotors in Hover at Ultra-low Reynolds Numbers." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12001.

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This paper provides a fundamental understanding of the unsteady aerodynamic phenomena on a cycloidal rotor blade operating at ultra-low Reynolds numbers (Re∼18,000) by utilizing a combination of experimental (force and flowfield measurements) and computational (CFD) studies. For the first time ever, the instantaneous blade fluid dynamic forces on a rotating cyclorotor blade were measured, which, along with PIV-based flowfield measurements revealed the key fluid dynamic mechanisms acting on the blade. A 2D CFD analysis of the cycloidal rotor was developed and systematically validated using both

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Woollam, Richard C., Daniel Betancourt, and Jie Wen. "Development of “Unified” Methodology Examining the Critical Pitting/Repassivation Potential and Temperature." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16855.

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Abstract Standards ASTM G61 - used for Cyclic Potentiodynamic Polarization measurements, and G150 - used in Critical Pitting Temperature measurements, are commonly used to determine the susceptibility of corrosion resistant alloys to localized corrosion. The two methodologies utilize different, yet related, driving forces applicable to the process, namely the potential and temperature. This study sought to establish the relationship between the pitting potential from ASTM G61 and critical pitting temperature from ASTM G150, both of which are determined as the driving force, potential or temper

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He, Rui Yang, and Chun Jiang. "Experiment and Data Analysis of Spheres Falling in Bounded System." In 12th Annual International Conference on Material Science and Engineering. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-kmd8tg.

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In an open or unbounded system, when a solid sphere freely falls into a liquid, it accelerates until it reaches a terminal velocity. At this point, the gravitational force, buoyant force, and viscous drag acting on the sphere are balanced. Stokes' law describes that in a laminar flow state, the viscous drag on the sphere is proportional to its radius, velocity, and viscosity coefficient. In this paper, an experimental system was constructed and the vertical and horizontal positions of spheres were measured with different sizes and densities in liquids of different diameters and viscosities, an

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Michaeli, L., R. Gao, M. D. Kelzenberg, C. U. Hail, J. E. Sader, and H. A. Atwater. "Radiation Pressure Measurement on Power-Reporting Lightsail Membranes." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fm4o.4.

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We measure radiation pressure forces exerted on a 50-nm-thick silicon nitride lightsail membrane by a collimated beam, as a function of angle. The lightsail reports the driving power by simultaneously acting as a micromechanical bolometer.

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Manabe, Hiroki, Shota Yabui, Hideyuki Inoue, and Tsuyoshi Inoue. "Development of Experimental Active Magnetic Bearing Device for Measurement of Mechanical Seal Reaction Force Acting on Rotor." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85883.

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In turbomachinery, seals are used to prevent fluid leakage. At seal part, rotordynamic fluid force (RD fluid force), which causes whirling motion of rotor, is generated. Under certain conditions, the RD fluid force may contribute to instability of the machine. There are several cases that the whirling is accompanied by eccentricity due to the influence of gravity, or the whirling orbit becomes elliptical due to the influence of the bearing support anisotropy. In these cases, mathematical modeling of the RD fluid forces becomes increasingly complex. As a result, the RD fluid force measurement i

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Marshall, Jeremy T., Mary E. F. Kasarda, and Joe Imlach. "A Multi-Point Measurement Technique for the Enhancement of Force Measurement With Active Magnetic Bearings." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0246.

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Chung, Byunghoon, and Sooyong Lee. "Robotic Assembly Based on Human Perception and Action." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/dsc-24619.

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Abstract Force guided assembly is a control scheme to guide a workpiece based on a stored map from forces to a correction of motion. Based on the geometry of the workpiece and its kinematic behavior in interacting with the environment, the functional map relating the correction of motion to force measurements is generated and stored as a control law. Central to the design of force guided control is how to synthesize this functional map. Although these explicit force-guided controls are a useful concept, particularly for the monitoring of assembly processes, there are inherent difficulties in a

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Saket, Fawaz Y., M. Necip Sahinkaya, and Patrick S. Keogh. "Touchdown Bearing Contact Forces in Magnetic Bearing Systems." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95510.

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Under contact-free levitation, rotors supported by active magnetic bearings have many advantages such as allowing near frictionless rotation and high rotational speeds. They also provide the designer the capability to achieve increased machine power density. However, magnetic bearings possess limited load capacity and operate under active control. Under certain operational conditions, the load capacity may be exceeded or a transient fault may occur. The rotor may then make contact with touchdown bearings and the ensuing rotor dynamics may result in transient or sustained contact dynamics. The

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Imlach, Joe, Mary E. F. Kasarda, and P. A. Balaji. "Enhancements to AMB Force Measurement Procedures for Application to a Rocket Thrust Measurement System." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0414.

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Active Magnetic Bearings (AMBs) can be used concurrently as support bearings and as load cells for the measurement of support forces. This paper discusses the preliminary design for a test rig to simulate a full-scale rocket thrust measurement system utilizing AMBs and procedures that have been developed to enhance the use of AMBs in this application. These enhancements include the development of a model of the effect of fringing on force measurements and an on-line calibration procedure. The fringing effect model is based on actuator geometry and has been verified through finite element analy

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Berichte der Organisationen zum Thema "Actice force measurement"

Shmulevich, Itzhak, Shrini Upadhyaya, Dror Rubinstein, Zvika Asaf, and Jeffrey P. Mitchell. Developing Simulation Tool for the Prediction of Cohesive Behavior Agricultural Materials Using Discrete Element Modeling. United States Department of Agriculture, 2011. http://dx.doi.org/10.32747/2011.7697108.bard.

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The underlying similarity between soils, grains, fertilizers, concentrated animal feed, pellets, and mixtures is that they are all granular materials used in agriculture. Modeling such materials is a complex process due to the spatial variability of such media, the origin of the material (natural or biological), the nonlinearity of these materials, the contact phenomenon and flow that occur at the interface zone and between these granular materials, as well as the dynamic effect of the interaction process. The lack of a tool for studying such materials has limited the understanding of the phen

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Krabill, Eleanor, Vivienne Zhang, Eric Lepowsky, et al. Menzingen Verification Experiment - Verifying the Absence of Nuclear Weapons in the Field. Edited by Pavel Podvig. The United Nations Institute for Disarmament Research, 2023. http://dx.doi.org/10.37559/wmd/23/mve.

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The Menzingen Verification Experiment described in this report was designed to test practical procedures for verifying the absence of nuclear weapons at a storage site. The experiment, which was conducted on 8 March 2023, was organized by UNIDIR in partnership with the Swiss Armed Forces, Spiez Laboratory, Princeton University’s Program on Science and Global Security, and the Open Nuclear Network. The project was supported by the Governments of the Kingdom of the Netherlands, Norway, and Switzerland. The experiment modelled an on-site inspection of a nuclear weapons storage site, represented b

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