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Статті в журналах з теми "Mechanically Actuated System"
Kamadan, Abdullah, Gullu Kiziltas, and Volkan Patoglu. "A Systematic Design Selection Methodology for System-Optimal Compliant Actuation." Robotica 37, no. 4 (November 29, 2018): 656–74. http://dx.doi.org/10.1017/s0263574718001248.
Повний текст джерелаWester, Brock A., Swaminathan Rajaraman, James D. Ross, Michelle C. LaPlaca, and Mark G. Allen. "Development and characterization of a packaged mechanically actuated microtweezer system." Sensors and Actuators A: Physical 167, no. 2 (June 2011): 502–11. http://dx.doi.org/10.1016/j.sna.2011.01.005.
Повний текст джерелаMuralidharan, Vivek, Abhijith Balakrishnan, Vinit Ketan Vardhan, Nikita Meena, and Y. Suresh Kumar. "Design of Mechanically Actuated Aerodynamic Braking System on a Formula Student Race Car." Journal of The Institution of Engineers (India): Series C 99, no. 2 (May 9, 2017): 247–53. http://dx.doi.org/10.1007/s40032-017-0354-1.
Повний текст джерелаHancock, David, Mark Shannon, Bertrand Beaumont, Pierre Dumortier, Frederic Durodie, Volodymyr Kyrytsya, Fabrice Louche, Robert McKinley, and Keith Nicholls. "Design of a mechanically actuated RF grounding system for the ITER ICRH antenna." Fusion Engineering and Design 88, no. 9-10 (October 2013): 2100–2104. http://dx.doi.org/10.1016/j.fusengdes.2013.02.089.
Повний текст джерелаGrund, T., C. Megnin, J. Barth, and M. Kohl. "Batch Fabrication of Shape Memory Actuated Polymer Microvalves by Transfer Bonding Techniques." Journal of Microelectronics and Electronic Packaging 6, no. 4 (October 1, 2009): 219–27. http://dx.doi.org/10.4071/1551-4897-6.4.219.
Повний текст джерелаCsencsics, Ernst, Markus Thier, Reinhard Hainisch, and Georg Schitter. "System and Control Design of a Voice Coil Actuated Mechanically Decoupling Two-Body Vibration Isolation System." IEEE/ASME Transactions on Mechatronics 23, no. 1 (February 2018): 321–30. http://dx.doi.org/10.1109/tmech.2017.2771440.
Повний текст джерелаAlmeida, Alexsandro C. S., Tarlei A. Botrel, Steven R. Raine, Antonio P. de Camargo, Marinaldo F. Pinto, and Conan A. Salvador. "Irrigation controller mechanically actuated by soil-water tension: II - Field evaluations." Revista Brasileira de Engenharia Agrícola e Ambiental 21, no. 5 (May 2017): 298–303. http://dx.doi.org/10.1590/1807-1929/agriambi.v21n5p298-303.
Повний текст джерелаKagadi, Matin, Girish Tembhare, Vinaay Patil, and Sujay Shelke. "Optimization of Self Activating Bi-Metallic Valve Using Thermo – Structural Coupled FEA." Advanced Materials Research 622-623 (December 2012): 147–51. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.147.
Повний текст джерелаWen, Haiying, Ming Cong, and Guifei Wang. "Experimental verification of workspace and mouth-opening movement of a redundantly actuated humanoid chewing robot." Industrial Robot: An International Journal 42, no. 5 (August 17, 2015): 406–15. http://dx.doi.org/10.1108/ir-04-2015-0069.
Повний текст джерелаKhalifeh, Nour El-Hoda, Rudy Youssef, Farah Fadel, Roy Khalil, Elie Shammas, Naseem Daher, Imad H. Elhajj, Thomas Irrenhauser, Michael N. Niedermeier, and Christian Poss. "Sensorless localization of a minimally-actuated robotic system for automated pallet de-strapping." Assembly Automation 41, no. 6 (October 18, 2021): 681–96. http://dx.doi.org/10.1108/aa-04-2021-0039.
Повний текст джерелаДисертації з теми "Mechanically Actuated System"
Sul, Onejae Washburn Michael Sean. "Thermally actuated mechanical systems." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,392.
Повний текст джерелаTitle from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Physics and Astronomy." Discipline: Physics and Astronomy; Department/School: Physics and Astronomy.
Farahat, Waleed A. (Waleed Ahmed) 1975. "Optimal workloop energetics of muscle-actuated systems." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39898.
Повний текст джерелаIncludes bibliographical references (p. 117-122).
Skeletal muscles are the primary actuators that power, stabilize and control locomotive and functional motor tasks in biological systems. It is well known that coordinated action and co-activation of multiple muscles give rise to desirable effects such as enhanced postural and dynamic stability. In this thesis, we study the role of muscle co-activation from an energetics perspective: Are there situations in which antagonist co-activation leads to enhanced power generation, and if so, what is the underlying mechanism? The mechanical energetics of muscles are traditionally characterized in terms of workloop measures where muscles are activated against oscillating, zero-admittance motion sources. We extend these measures to more natural, "mid-range" admittance loads, actuated by multiple muscles. Specifically, we set up the problem of a second-order mechanical system driven by a pair of antagonist muscles. This is the simplest problem where the influences of load dynamics and muscle co-activation on the output energetics may be investigated. To enable experimentation, a muscle testing apparatus capable of real-time servo emulation of the load is developed and utilized for identification and workloop measurements.
(cont.) Using this apparatus, an experimentally identified model predicting muscle contractile force is proposed. Experimental data shows that with a simple Weiner structure, the model accounts for 74% (sigma = 5.6%) of the variance in muscle force, that force dependence on contraction velocity is minimal, and that a bilinear approximation of the output nonlinearity is warranted. Based on this model we investigate what electrical stimulation input gives rise to maximal power transfer for a particular load. This question is cast in an optimal control framework. Necessary conditions for optimality are derived and methods for computing solutions are presented. Solutions demonstrate that the optimal stimulation frequencies must include the effects of muscle impedances, and that optimal co-activation levels are indeed modulated to enable a pair of muscles to produce more work synergistically rather than individually. Pilot experimental data supporting these notions is presented. Finally, we interpret these results in the context of the familiar engineering notion of impedance matching. These results shed new light on the role of antagonist co-activation from an energetics perspective.
by Walled A. Farahat.
Ph.D.
Nahon, Meyer. "Optimization of force distribution in redundantly-actuated robotic systems." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74596.
Повний текст джерелаFirstly, graph theory is used to characterize the kinematic structure of these systems and show that they can be decomposed into two subsystems, each with different properties. The contacts which occur between the constituent bodies in the system are then analyzed in order to determine the system's mobility (or number of degrees of freedom). It is found that this mobility varies during the task and that, at any given time, there will be more actuators active than are necessary.
The kinematic and dynamic equations governing the motion of these systems are then studied and compared to those of more conventional robotic systems. Although the inverse dynamics equations can be formulated in a number of ways, they always constitute an underdetermined system of linear equations. This allows their treatment as equality constraints in an optimization problem. In order to account for the limitations of passive contacts and actuator capabilities, inequality constraints are also considered.
The formulation of the optimization problem is then studied with emphasis on problems which are solvable in real-time and which produce time-continuous solutions. Quadratic programming is found to be a good choice of problem formulation. A quadratic-programming algorithm which efficiently includes both equality and inequality constraints is presented. A number of linear and quadratic objective functions which could be optimized are reviewed and the limitations of linear programming are made apparent through the use of numerical examples. Quadratic objective functions which minimize internal force, power consumption and solution discontinuities are examined. Finally, other applications of redundant actuation are briefly touched upon--the full dynamic balancing of linkages and the reduction of impact shocks in robotic systems.
Mohammadshahi, Donya. "Dynamics and control of cables in cable-actuated systems." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119654.
Повний текст джерелаCette thèse présente une étude de la modélisation dynamique et commande d'un système actionné par câbles, celui-ci composé d'un effecteur attaché à une série de câbles actionnés. L'objectif de cette thèse est de développer un contrôleur qui positionne l'effecteur et diminue les vibrations des câbles. La dynamique du système est modélisée en utilisant la méthode de masses localisées. D'abord, deux algorithmes de commande, PID et LQG sont utilisés pour développer la command. Puis, nous étudions l'application de la commande passive sur le système actionné pas câbles. Les systèmes actionnés par câbles sont généralement non carré avec des actionneurs et des senseurs non colocalisés, ce qui limite généralement l'utilisation de la commande passive. Pour trouver une solution pour ces contraintes, premièrement, nous considérons une intégration dynamique, où un observateur est utilisé pour construire une nouvelle sortie qui donne un système passif. Deuxièmement, nous considérons une entrée-sortie alternative, où la sortie est une version réduit de la vitesse réelle de l'effectuer et l'entrée est une modification du couple de treuil.
Wongviriyawong, Chanikarn Mint. "Stable hopping of a muscle-actuated leg system using positive force feedback." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39725.
Повний текст джерелаIncludes bibliographical references (leaves 89-92).
In control of movement, two key components, which are pure mechanical response of the system and response due to sensory feedback, must be thoroughly understood. Recent studies suggest not only the existence of positive force feedback in vivo, but also the emergent property of positive force feedback in having a stabilizing effect on a dynamical system in the presence of disturbances. In this thesis, simulated environment of simple one-dimensional point mass hopping model with positive force feedback as well as experimental results of the same dynamical system are compared and studied in detail. Three important hypotheses are investigated. The first hypothesis involves positive force feedback and its stabilization property despite disturbances in the system. A system with positive force feedback control attains cyclic motion while system energy is being added or removed without changing its steady state system energy. Secondly, overall mechanical behavior of the leg becomes elastic in the existence of positive force feedback. In locomotion, elastic leg behavior is desired for a pertinent adaptation to physical properties of the environment and utilization of the locomotory performances.
(cont.) The last hypothesis investigated is the effect of feedback control parameters on closed loop system behavior, i.e. frequency of hopping, steady state hopping height, etc. Simulation and pilot experimental data are compared both qualitatively and quantitatively concerning all three hypotheses.
by Chanikarn Wongviriyawong.
S.M.
Abhijit, Upadhye. "Electrostatically actuated and bi-stable MEMS structures." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6041.
Повний текст джерелаThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 16, 2008) Includes bibliographical references.
Lichter, Matthew D. (Matthew Daniel) 1977. "Concept development for lightweight binary-actuated robotic devices, with application to space systems." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8546.
Повний текст джерела"June 2001."
Includes bibliographical references (leaves 66-71).
Exploratory space missions of the future will require robotic systems to lead the way by negotiating and mapping very rough terrain, collecting samples, performing science tasks, and constructing facilities. These robots will need to be adaptable and reconfigurable in order to achieve a wide variety of objectives. Conventional designs using gears, motors, bearings, encoders, and many discrete components will be too complex, heavy, and failure-prone to allow highly-reconfigurable systems to be feasible. This thesis develops new concepts that may potentially enable the design of self-transforming space explorers. The vision of this research is to integrate compliant bistable mechanisms with large numbers of binary-actuated embedded smart materials. Compliant mechanisms are lightweight and robust. Binary actuation is the idea of using an actuator in a discrete on/off manner rather than in a continuous manner. A binary actuator is easy to control and robust, and by using tens or hundreds of binary actuators, one can approximate a continuous system, much like a digital computer can approximate an analog system. The first part of this thesis examines the fundamental planning issues involved with systems having large numbers of binary actuators. The notion of a workspace is described and applied to the optimization of a manipulator design. Methods for solving the forward and inverse kinematics are discussed in the context of this application. These methods are extended to the trajectory and locomotion planning problems. Methods for planning systems of substantial complexity are developed in the context of exploratory space robotics. The second part of this thesis presents experimental demonstrations that examine elements of the concept. The results of several design prototypes are discussed.
by Matthew D. Lichter.
S.M.
Selden, Brian A. 1980. "Segmented binary control of shape memory actuator systems." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30307.
Повний текст джерелаIncludes bibliographical references (p. 51).
A new approach to the design and control of shape memory alloy (SMA) actuators is presented. SMA wires are divided into many segments and their thermal states are controlled individually as a group of finite state machines. Instead of driving a current to the entire SMA wire and controlling the wire length based on the analogue strain-temperature characteristics, the new method controls the binary state (hot or cold) of individual segments and thereby the total displacement is proportional to the length of the heated segments, i.e. austenite phase. Although the thermo-mechanical properties of SMA are highly nonlinear and uncertain with a prominent hysteresis, Segmented Binary Control is robust and stable, providing characteristics similar to a stepping motor. However, the heating and cooling of each segment to its bi-stable states entail longer time and larger energy for transition. An efficient method for improving speed of response and power consumption is developed by exploiting the inherent hysteresis of SMA. Instead of keeping the extreme temperatures continuously, the temperatures return to intermediate "hold" temperatures closer to room temperature but sufficient to keep constant phase. Coordination of the multitude of segments having independent thermal states allows for faster response with little latency time even for thick SMA wires. Based on stress dependent thermo-mechanical characteristics, the hold temperature satisfying a given Stress Margin is obtained. The new control method is implemented using the Peltier effect thermoelectric devices for selective segment-by-segment heating and cooling. Experiments demonstrate effectiveness of the proposed method.
by Brian A. Selden.
S.M.
Rupinsky, Michael J. "Smart material electrohydrostatic actuator for intelligent transportation systems." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1391701972.
Повний текст джерелаWester, Brock Andrew. "Development and characterization of mechanically actuated microtweezers for use in a single-cell neural injury model." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39645.
Повний текст джерелаКниги з теми "Mechanically Actuated System"
40 HP electro-mechanical actuator. [Washington, DC]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерела40 HP electro-mechanical actuator. [Washington, DC]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаUnited States. National Aeronautics and Space Administration., ed. 40 HP electro-mechanical actuator. [Washington, DC]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаUnited States. National Aeronautics and Space Administration., ed. 40 HP electro-mechanical actuator. [Washington, DC]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаStaff, SAE International (Society), and Kenneth W. Hummel. Fundamentals of Engineering High-Performance Actuator Systems. SAE International, 2017.
Знайти повний текст джерелаAdaptive Control of Systems with Actuator Failures. Springer, 2004.
Знайти повний текст джерелаChen, Shuhao, Xidong Tang, Suresh M. Joshi, and Gang Tao. Adaptive Control of Systems with Actuator Failures. Springer London, Limited, 2013.
Знайти повний текст джерелаChen, Shuhao, Xidong Tang, Suresh M. Joshi, and Gang Tao. Adaptive Control of Systems with Actuator Failures. Springer London, Limited, 2010.
Знайти повний текст джерелаUnited States. National Aeronautics and Space Administration., ed. Electro-mechanical actuator: DC resonant link controller. [Washington, D.C.]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаUnited States. National Aeronautics and Space Administration., ed. Electro-mechanical actuator: DC resonant link controller. [Washington, D.C.]: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаЧастини книг з теми "Mechanically Actuated System"
Torres, Pedro J. "An Electrostatically Actuated Micro-electro-mechanical System." In Atlantis Briefs in Differential Equations, 15–20. Paris: Atlantis Press, 2015. http://dx.doi.org/10.2991/978-94-6239-106-2_2.
Повний текст джерелаAsarin, Eugene, Sorav Bansal, Bernard Espiau, Dang Thao, and Oded Maler. "On Hybrid Control of Under-Actuated Mechanical Systems." In Hybrid Systems: Computation and Control, 77–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45351-2_10.
Повний текст джерелаWang, Yaojun, Bruno Belzile, Jorge Angeles, and Qinchuan Li. "On the Modeling of Redundantly-Actuated Mechanical Systems." In Multibody Dynamics 2019, 172–79. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23132-3_21.
Повний текст джерелаRengasamy, S., D. Manamalli, and K. C. Rajendra Prasad. "Fault Detection in Electro-Mechanical Actuator System." In Advances in Automation, Signal Processing, Instrumentation, and Control, 1575–89. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8221-9_147.
Повний текст джерелаKern, Thorsten A., Henry Haus, Marc Matysek, and Stephanie Sindlinger. "Actuator Design." In Springer Series on Touch and Haptic Systems, 309–429. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04536-3_9.
Повний текст джерелаBen Sassi, Sarah, and Fehmi Najar. "Novel Reduced Order Model for Electrically Actuated Microbeam-Based MEMS." In Design and Modeling of Mechanical Systems - II, 513–20. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17527-0_51.
Повний текст джерелаEnikov, Eniko T., Kalin V. Lazarov, and Gilbert R. Gonzales. "Microelectrical Mechanical Systems Actuator Array for Tactile Communication." In Lecture Notes in Computer Science, 551–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45491-8_105.
Повний текст джерелаAli, Md Hazrat, Akio Katsuki, Takao Sajima, Hiroshi Murakami, and Syuhei Kurokawa. "Development of Mechanical Actuator for Deep-Hole Measurement System." In Communications in Computer and Information Science, 280–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35197-6_31.
Повний текст джерелаChiba, M., J. Tani, G. Liu, F. Takahashi, S. Kodama, and H. Doki. "Active Vibration Control of a Cantilever Beam by a Piezoelectric Ceramic Actuator." In Dynamics of Controlled Mechanical Systems, 107–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83581-0_9.
Повний текст джерелаRoshini, M., Vishal Rao, and M. Mahendra Nayak. "The Configurable Attitude Sensor and Actuator Simulation in the RSAT Test System." In Lecture Notes in Mechanical Engineering, 57–64. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1724-2_7.
Повний текст джерелаТези доповідей конференцій з теми "Mechanically Actuated System"
Kothari, Naman S., Mayank R. Porwal, and Mayur O. Kacholiya. "Design and Development of Mechanically Actuated Wheelchair Convertible to Bed." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-93368.
Повний текст джерелаChang, Carl W., Paul Lum, and Richard S. Muller. "Magnetically Actuated Microplatform Scanners for Intravascular Ultrasound Imaging." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1162.
Повний текст джерелаSchlögl, T., and S. Leyendecker. "Dynamic Simulation of Dielectric Elastomer Actuated Multibody Systems." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9110.
Повний текст джерелаTiller, Michael, Cleon Davis, Hubertus Tummescheit, and Nizar Trigui. "Powertrain Modeling With Modelica." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2352.
Повний текст джерелаIlyas, Saad, Nizar Jaber, and Mohammad I. Younis. "Static and Dynamic Amplification Using Strong Mechanical Coupling." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66104.
Повний текст джерелаCarpenter, Andrew L., Robert E. Mayo, Jerald G. Wagner, and Paul E. Yelvington. "High-Pressure Electronic Fuel Injection for Small-Displacement Single-Cylinder Diesel Engine." In ASME 2015 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icef2015-1029.
Повний текст джерелаMontzka, Alissa, Nathan Epstein, Michael Rannow, Thomas R. Chase, and Perry Y. Li. "Experimental Testing of a Variable Displacement Pump/Motor That Uses a Hydro-Mechanically Timed Digital Valving Mechanism to Achieve Partial-Stroke Piston Pressurization (PSPP)." In ASME/BATH 2019 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/fpmc2019-1693.
Повний текст джерелаMurphy, Patrick, Qing Chao Kong, and Constantinos Mavroidis. "Mechanical Design and Control of a 2 Degree of Freedom Robotic Hand Rehabilitation Device." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35406.
Повний текст джерелаJouppila, Ville, and Asko Ellman. "Position Control of PWM-Actuated Pneumatic Muscle Actuator System." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63370.
Повний текст джерелаVedrines, Marc, and Dominique Knittel. "Design Optimization Using Genetic Algorithms of Web Handling Systems: The Case of the Pendulum Dancer Mechanism." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42068.
Повний текст джерела