Academic literature on the topic 'Integrated Actuation System'
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Journal articles on the topic "Integrated Actuation System"
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Zhang, Xi, Jinxuan Zhang, Bidita Salahuddin, Shuai Gao, Shazed Aziz, and Zhonghua Zhu. "Reversible Torsional Actuation of Hydrogel Filled Multifilament Fibre Actuator." Actuators 10, no. 9 (September 21, 2021): 244. http://dx.doi.org/10.3390/act10090244.
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Twisted polymer fibre actuators provide high torsional rotation from stimulated volume expansion, induced either by chemical fuelling, thermal stimulation, or electrochemical charging. One key limitation of these actuators is the irreversibility of torsional stroke that limits their feasibility when considering real-life smart applications. Moreover, scaling the torsional stroke of these actuators becomes difficult when these are integrated into practically usable systems such as smart textiles, due to the external and variable opposing torque that is applied by the adjacent non-actuating fibres. Herein, a simple composite type torsional actuator made of hydrogel coated commercial textile cotton multifilament fibre is demonstrated. This novel actuator is of high moisture responsiveness, given that hydrogels are capable of providing huge volume expansion and twisting the overall system can transform the volumetric expansion to fibre untwisting based torsional actuation. Theoretical treatment of torsional actuation is also demonstrated based on the change in torsional stiffness of dry and wet fibres as well as a few externally applied torques. The agreement between experimental measurements and theoretical estimation is found reasonable, and the investigation allows the near-appropriate estimation of torsional stroke before integrating an actuator into a smart system.
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He, Yuan Yuan, and Li Liu. "Modeling and Testing of a Seamless Wing Trailing Edge Control Actuation System." Applied Mechanics and Materials 195-196 (August 2012): 1089–94. http://dx.doi.org/10.4028/www.scientific.net/amm.195-196.1089.
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This paper presents an investigation into the modeling and analysis of an innovative actuation system for a wing with a seamless flexible trailing edge control surface. Research was started with the study of aerodynamic behavior and advantage of the wing in smooth variable chamber shape under control. Based on the concept and design, an experimental wing section integrated with the actuation mechanism was built and tested. The main effort was then made to the modeling of the internal actuation system for the purpose of obtaining the physical properties and accurate modeling of the whole wing structural system. To validate and update the numerical model of the system, vibration test of the actuation system including the mechanism and actuator was carried out. Some key parameters such as the stiffness of the actuation system were identified from vibration test data. The investigation demonstrated a practical approach to quantify some key parameters and update the numerical model of an actuation system.
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Ijaz, Salman, Mirza Tariq Hamayun, Lin Yan, Hamdoon Ijaz, and Cun Shi. "Adaptive fault tolerant control of dissimilar redundant actuation system of civil aircraft based on integral sliding mode control strategy." Transactions of the Institute of Measurement and Control 41, no. 13 (May 6, 2019): 3756–68. http://dx.doi.org/10.1177/0142331219835589.
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In modern aircraft, the dissimilar redundant actuation system is used to resolve the actuator failure issues due to the common cause, thus increasing the system reliability. This paper proposes an adaptive integral sliding mode fault tolerant control strategy to deal with actuator fault/failure in the dissimilar redundant actuation system of civil aircraft. To cope with the unknown actuator faults, the adaptive integral sliding mode controller is designed where the modulation gain is made adaptive to the fault. To deal with the complete failure of certain actuator, the integral sliding mode control is integrated with control allocation scheme and distribute the control input signals to the redundant actuators. The performance of the proposed scheme is tested on the nonlinear model of dissimilar redundant actuation system, where the effect of external airload is accounted during simulations. The effectiveness of the proposed scheme is validated by comparing the simulations with the existing literature.
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Dimino, Ignazio, Federico Gallorini, Massimiliano Palmieri, and Giulio Pispola. "Electromechanical Actuation for Morphing Winglets." Actuators 8, no. 2 (May 15, 2019): 42. http://dx.doi.org/10.3390/act8020042.
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As a key enabler for future aviation technology, the use of servo electromechanical actuation offers new opportunities to transition innovative structural concepts, such as biomimicry morphing structures, from basic research to new commercial aircraft applications. In this paper, the authors address actuator integration aspects of a wing shape-changing flight surface capable of adaptively enhancing aircraft aerodynamic performance and reducing critical wing structural loads. The research was collocated within the Clean Sky 2 Regional Aircraft Demonstration Platform (IADP) and aimed at developing an adaptive winglet concept for green regional aircraft. Finite Element-based tools were employed for the structural design of the adaptive device characterized by two independent movable tabs completely integrated with a linear direct-drive actuation. The structural design process was addressed in compliance with the airworthiness needs posed by the implementation of regional airplanes. Such a load control system requires very demanding actuation performance and sufficient operational reliability to operate on the applicable flight load envelope. These requirements were met by a very compact direct-drive actuator design in which the ball recirculation device was integrated within the screw shaft. Focus was also given to the power-off electric brake necessary to block the structure in a certain position and dynamically brake the moveable surface to follow a certain command position during operation. Both the winglet layout static and dynamic robustness were verified by means of linear stress computations at the most critical conditions and normal mode analyses, respectively, with and without including the integrated actuator system.
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Pires, Felipe Marques, Leonardo de Souza Mendes, and Lorena León Quiñonez. "Integrated system architecture for decision-making and urban planning in smart cities." International Journal of Distributed Sensor Networks 15, no. 8 (August 2019): 155014771986782. http://dx.doi.org/10.1177/1550147719867829.
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Research and development of applications for smart cities are extremely relevant considering the various problems that population growth will bring to large urban centers in the next few years. Although research on cyber-physical systems, cloud computing, embedded devices, sensor and actuator networks, and participatory sensing, among other paradigms, is driving the growth of solutions, there are a lot of challenges that need to be addressed. Based on these observations, in this work, we present an integrated system architecture for decision-making support and urban planning by introducing its building blocks (termed components): sensing/actuation, local processing, communication, cloud platform, and application components. In the sensing/actuation component, we present the major relevant resources for data collection, identification devices, and actuators that can be used in smart city solutions. Sensing/actuation component is followed by the local processing component, which is responsible for processing, decision-making support, and control in local scale. The communication component, as the connection element among all these components, is presented with an emphasis on the open-access metropolitan area network and cellular networks. The cloud platform is the essential component for urban planning and integration with electronic governance legacy systems, and finally, the application component, in which the government administrator and users have access to public management tools, citizen services, and other urban planning resources.
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Botez, R. M., M. J. Tchatchueng Kammegne, and L. T. Grigorie. "Design, numerical simulation and experimental testing of a controlled electrical actuation system in a real aircraft morphing wing model." Aeronautical Journal 119, no. 1219 (September 2015): 1047–72. http://dx.doi.org/10.1017/s0001924000011131.
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AbstractThe paper focuses on the modelling, simulation and control of an electrical miniature actuator integrated in the actuation mechanism of a new morphing wing application. The morphed wing is a portion of an existing regional aircraft wing, its interior consisting of spars, stringers, and ribs, and having a structural rigidity similar to the rigidity of a real aircraft. The upper surface of the wing is a flexible skin, made of composite materials, and optimised in order to fulfill the morphing wing project requirements. In addition, a controllable rigid aileron is attached on the wing. The established architecture of the actuation mechanism uses four similar miniature actuators fixed inside the wing and actuating directly the flexible upper surface of the wing. The actuator was designed in-house, as there is no actuator on the market that could fit directly inside our morphing wing model. It consists of a brushless direct current (BLDC) motor with a gearbox and a screw for pushing and pulling the flexible upper surface of the wing. The electrical motor and the screw are coupled through a gearing system. Before proceeding with the modelling, the actuator is tested experimentally (stand alone configuration) to ensure that the entire range of the requirements (rated or nominal torque, nominal current, nominal speed, static force, size) would be fulfilled. In order to validate the theoretical, simulation and standalone configuration experimental studies, a bench testing and a wind-tunnel testing of four similar actuators integrated on the real morphing wing model are performed.
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Crowder, R., and C. Maxwell. "Simulation of a prototype electrically powered integrated actuator for civil aircraft." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 211, no. 6 (June 1, 1997): 381–94. http://dx.doi.org/10.1243/0954410971532749.
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Developments in the design and proposed operation of large civil aircraft have resulted in aircraft manufacturers and equipment suppliers developing new system concepts, one of which is the all or more electric aircraft. In the all or more electric aircraft the distribution of power for flight actuation will be through the electrical system, as opposed to the currently used bulk hydraulic system. In order to implement power-by-wire, high-performance electrically powered actuators will be required. The paper discusses the design details, and the simulation of an electrohydrostatic actuator suitable for use in primary flight control systems of a civil aircraft. The paper presents experimental and simulation results, and identifies the parameters that will critically affect the performance of an actuator.
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Liu, Jian Xin, Yu Liu, and Ping Tan. "Simulation of Position Control and Flow Rate Match of Integrated Hydraulic Actuator Unit." Advanced Materials Research 118-120 (June 2010): 640–44. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.640.
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This paper presents a kind of all-digital integrated hydraulic actuator (IHA) unit to drive heavy load object without centralized oil tank. In order to improve the control quality of the actuation system while eliminating or reducing the disturbance, and also to solve the problem of flow rate mismatch existed in IHA with single-rod cylinder actuator, a fuzzy PID PWM controller is suggested. Simulations on the integrated hydraulic actuator unit are carried out to evaluate the effectiveness of the proposed control method when applied to hydraulic systems with various external disturbances encountered in real working conditions. Simulation results are discussed and some conclusions are given.
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Khan, S., T. L. Grigorie, R. M. Botez, M. Mamou, and Y. Mébarki. "Novel morphing wing actuator control-based Particle Swarm Optimisation." Aeronautical Journal 124, no. 1271 (September 26, 2019): 55–75. http://dx.doi.org/10.1017/aer.2019.114.
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AbstractThe paper presents the design and experimental testing of the control system used in a new morphing wing application with a full-scaled portion of a real wing. The morphing actuation system uses four similar miniature brushless DC (BLDC) motors placed inside the wing, which execute a direct actuation of the flexible upper surface of the wing made from composite materials. The control system of each actuator uses three control loops (current, speed and position) characterised by five control gains. To tune the control gains, the Particle Swarm Optimisation (PSO) method is used. The application of the PSO method supposed the development of a MATLAB/Simulink® software model for the controlled actuator, which worked together with a software sub-routine implementing the PSO algorithm to find the best values for the five control gains that minimise the cost function. Once the best values of the control gains are established, the software model of the controlled actuator is numerically simulated in order to evaluate the quality of the obtained control system. Finally, the designed control system is experimentally validated in bench tests and wind-tunnel tests for all four miniature actuators integrated in the morphing wing experimental model. The wind-tunnel testing treats the system as a whole and includes, besides the evaluation of the controlled actuation system, the testing of the integrated morphing wing experimental model and the evaluation of the aerodynamic benefits brought by the morphing technology on this project. From this last perspective, the airflow on the morphing upper surface of the experimental model is monitored by using various techniques based on pressure data collection with Kulite pressure sensors or on infrared thermography camera visualisations.
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Mingallon, Maria, and Sakthivel Ramaswamy. "Thigmo-Morphogenetic Fiber Composites Embedded with Shape Memory Alloys." Advances in Science and Technology 80 (September 2012): 102–11. http://dx.doi.org/10.4028/www.scientific.net/ast.80.102.
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The premise of this research is to integrate sensing and actuation functions into a fibre composite material system. Fibre composites, which are anisotropic and heterogeneous, offer the possibility for local variations in their material properties. Embedded fibre optics are herein used to sense, while shape memory alloys provide actuation capabilities to the resulting composite. The definition of the geometry, inspired by the organization strategies found in biological composites, complements the functioning of the adaptive material system at both local and global levels, allowing it to display integrated functionality.
Dissertations / Theses on the topic "Integrated Actuation System"
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Leuschke, Rainer. "Motor integrated actuation for a flywheel energy storage system /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/7113.
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Lin, Mark Wen-Yih. "Theoretical modeling of the actuation mechanism in integrated induced strain actuator/substructure systems." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/38544.
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Induced strain actuators have been integrated with conventional structural materials to serve as energy input devices or actuating elements in many engineering applications implementing intelligent material systems and structures concepts. In order to use the actuation mechanism produced by the integrated induced strain actuators efficiently, the mechanics of the mechanical interaction between the actuator and the host substructure must be understood and modeled accurately. A refined analytical model has been developed based on the plane stress formulation of the theory of elasticity for a surfacebonded induced strain actuator/beam substructure system. Closed-form solutions of the induced stress field were obtained in an approximate manner using the principle of stationary complementary energy. The model has also been extended to include the presence of adhesive bonding layers and applied external loads. The results of the current model were compared with those obtained by finite element analysis and the pin-force and Euler-Bernoulli models.
It was shown that the current model is capable of describing the edge effects of the actuator on actuation force/moment transfer and interfacial shear and peeling stress distributions that the existing analytical models fail to describe. Good agreement was obtained between the current model and the finite element analysis in terms of predicting actuation force/moment transfer. The interfacial shear stress distribution obtained by the current model satisfies stress-free boundary conditions at the ends of the actuator, which the finite element model is not able to satisfy. The current model correctly describes the transfer of the actuation mechanism and the resulting interfacial stress distributions; thus, it can be used in designing integrated induced strain actuator/substructure systems.
Moreover, a new induced strain actuator configuration, which includes inactive edges on the ends of the actuators, has been proposed to alleviate the intensity of the interfacial stresses. The effectiveness of the actuator on the interfacial stress alleviation was verified by the current analytical model and finite element analysis. It was shown that the proposed actuator configuration can significantly alleviate intensive interfacial shear and peeling stresses without sacrificing the effectiveness of the actuation mechanism. The chances of interfacial failure of the integrated structural system, fatigue failure in particular, can thus be reduced.Ph. D.
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Salem, Mohamed Yafia Okba. "Enhanced actuation and fabrication methods for integrated digital microfluidic systems." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60456.
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Introducing a practical digital microfluidic (DMF) platform has been always an important goal that can facilitate and broaden the use of DMF systems in various applications on a regular basis. In particular, a desired DMF platform may be the one which is fabricated easily and is also affordable, portable, battery powered, and user friendly. It should perform DMF operations reliably, accept mass-produced replaceable chips and can be readily integrated into a post processing station as well. Accordingly, the development of a practical DMF platform with these characteristics is the main target of this research. Specifically, the research has enhanced DMF systems through i) improved and novel actuation mechanisms, ii) cost-effective rapid prototyping techniques, and iii) full system integration. First, detailed experimental and numerical characterization of droplet morphology is performed to insinuate useful design and prototyping tips for enhanced DMF devices. Since droplet transport predominantly depends on the gap height, a major objective of the thesis is understanding the motion dynamics of a droplet at different gap heights. The characterization of the droplet behaviour in different regimes led to enhancing the actuation process in DMF systems. In addition, a variable gap size actuation (VGSA) mechanism is integrated into the DMF system to optimize DMF operations including droplet transport, splitting, dispensing and merging in real time. Consequently, the DMF operations can be performed reliably by adjusting the optimum operating conditions. Second, for rapid prototyping DMF chips, a new fabrication method is presented in which the electrodes are generated using screen printing. As a batch fabrication technique, the proposed screen printing approach is advantageous to the widely reported DMF electrode fabrication methods in terms of fabrication volume, time, and cost. In addition, a laser scribing technique is introduced as a low-cost, rapid and facile method for fabricating laser scribed graphene electrodes for DMF systems. Third, an ultraportable, low-cost, and modular DMF platform was successfully integrated with a smartphone that is used as a high-level controller. A colorimetric assay for pH value detection is introduced to demonstrate the performance of the device as a microscope and a post processing station.Applied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
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Khan, Muneeb Ullah. "Contribution to the design and fabrication of an integrated micro-positioning system." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP1671/document.
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L’objectif de la thèse est de développer un dispositif de micro positionnement intégrant à la fois les actionneurs et les capteurs. Un dispositif a été conçu afin de réaliser des déplacements dans les plans sur une course millimétrique. Le dispositif compact ne nécessite pas de système de guidage additionnel et selon le mode d’utilisation de ces moteurs, il est capable de réaliser des translations dans le plan ou des rotations autour d’un axe perpendiculaire au plan. Le dispositif comprend quatre moteurs électromagnétiques linéaires fixés orthogonalement sur une structure en forme de croix. Chaque moteur consiste en une paire de bobines planes entrelacées fixe et une barre ’aimants mobile. Un capteur de déplacement intégré dans la structure en croix permettant de mesurer le déplacement de celle-ci a été conçu et fabriqué. Ce capteur est constitué d’une tête de mesure à fibres optiques placé face à un réseau en silicium réalisé par des techniques de microfabrication. Afin de minimiser les erreurs d’assemblage, la structure en croix a également été micro fabriquée. Le dispositif est capable de réaliser un déplacement de 10 mm et une rotation de ±11° autour de l’axe perpendiculaire au plan du dispositif. La résolution de déplacement du dispositif est de 1,4 µm avec une précision de 31 nm en boucle fermée. Le dispositif peut également atteindre une vitesse de déplacement de 12 mm/sThe objective of thesis is to develop an integrated micro positioning system for micro applications. A unique micro positioning system design capable to deliver millimeter level strokes with pre-embedded auto guidance feature in micro application has been realized. The design integrates, a stack of orthogonally arranged four electromagnetic linear motors. Each linear motor consists of a fixed planar electric drive coil and mobile permanent magnet array. The optimal design of the system delivers a small footprint size. In addition, to measure and control the displacement, a high resolution compact optical displacement measurement sensor has been designed and fabricated in silicon material using microfabrication technology. Furthermore, a light weight silicon cross structure was fabricated using dry etching technology to reduce components assembly errors. The device is capable to deliver 10 mm displacement stroke with a rotation of ±11° about an axis perpendicular to the plane of the device. The displacement resolution of the device is 1.4 µm with a precision of 31 nm in closed loop control. The device can realize displacement with a speed of 12 mm/s
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Wenzel, Ute Verfasser], Ivo W. [Akademischer Betreuer] [Rangelow, D. Frank [Akademischer Betreuer] Ogletree, and Teodor P. [Akademischer Betreuer] Gotszalk. "Fabrication and characterization of self-sensing and self-actuating piezoresistive microscale silicon cantilevers for an integrated scanning probe microscopy and scanning electron microscopy system / Ute Wenzel. Gutachter: D. Frank Ogletree ; Teodor P. Gotszalk. Betreuer: Ivo W. Rangelow." Ilmenau : Universitätsbibliothek Ilmenau, 2013. http://d-nb.info/1034527770/34.
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Sri, Ram Shankar R. "A Probing System for Dynamic Mode Atomic Force Microscopy Based on Specialized Probes." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4292.
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The dynamic mode atomic force microscope (AFM) is a versatile tool that uses a resonantly excited micro-cantilever probe to obtain a sample’s topography and to characterize its material properties. While a number of useful techniques have been developed for interacting with the sample, conventional AFM probes and AFM systems do not facilitate their effective implementation. This thesis investigates the design of specialized AFM probes and the development of a novel probing system that improves the speed of imaging and enhances the sensitivity to material properties in dynamic mode AFM.
In order to perform high speed imaging, an integrated high-bandwidth magnetic actuation system, comprising a special probe and an actuator, is designed and developed. Subsequently, the actuation system is fabricated and evaluated using an in-house developed measurement system to possess an eigen-frequency of 104 kHz and a range of 225 nm. In aqueous medium, the probe is shown to suffer 3 times lesser reduction in eigen-frequency compared to a conventional probe of similar eigen-frequency in air.
In order to achieve enhanced sensitivity to material properties, a systematic approach is proposed to design and fabricate probes with specified eigen-frequencies. The proposed approach is employed to design and develop a flexural harmonic probe with eigen-frequencies in the ratio 1:2 and a torsional harmonic probe with eigen-frequencies in the ratio 1:2:3. The experimentally evaluated eigen-frequency ratios are shown to match the specifications to within 0.4% and 2% respectively. Further, harmonic probes with exchangeable tips are proposed and a prototype probe is fabricated and evaluated. The developed harmonic probes are shown to be significantly more sensitive to tip-sample forces.
To effectively exploit the high speed and sensitivity of the developed probes, a custom AFM system is designed and developed in-house. The AFM includes a novel Z-magnetic actuation system having bandwidth in excess of 3 MHz and an XY nano-positioning system suitable for video-rate imaging. A novel measurement system based on optical beam deflection is developed and evaluated to measure XY-motion of the positioner. High speed control hardware based on Field Programmable Gate Array (FPGA) has been used for data acquisition and real-time control, with update rates of more than 5 MHz. The developed system is demonstrated to enhance the positioning bandwidth of the high-speed AFM probe, and subsequently employed in high-speed dynamic mode AFM imaging at rates upto 1.25 frames/second. Finally, the potential of the developed system for video-rate dynamic mode AFM imaging, and in-situ material characterization is discussed.
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Wang-Han-Fu and 翁漢甫. "Integrated High Speed Precision Positioning System and Designing for the Controlled Strategy of Dual Stage Actuator." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/68259863477261904439.
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碩士國立臺灣大學
工程科學及海洋工程學研究所
93
The ultra precision positioning technique has become one of the important parts in the development of the precision machines. Our lab has many experiences on developing metrology’s system； but to the positioning tech, the subsystem will extend for the positioning system. The thesis will be discussed under the high-frequency, high dynamic range and high-accuracy application demand, whole resultant examines and designs the basic problems faced systematically. This text will introduce the characteristics, such as bandwidth, dynamic range and precision issues, etc. From every subsystem of the introductions, like the metrology, signal process and controls system, it examined the match problems with the interface among the each subsystem, find in the discussions, it may become the basic bottleneck to orient the platform, and then it is the feasibility of the structure to put forward dual stage actuators. The combination of a macro-stage and a short reach mini-stage enables fast, precise stage through an orient task. The most straight forward method of designing the control system is to develop independent controllers for the macro and mini subsystem and from a control architecture, where the reference input for the mini is the difference between the desired tip position and the macro position, by the mini-stage actuating fast and high accuracy, it compensates all possible error sources in the position tasks. But analyze this device further, the mini rides on the macro, there will be coupling from the mini control force to the macro. This one way dynamic coupling leads to interactions that degrade performance. For the effectors, control strategy will adding a vibration controller into the architecture, and discussing what kinds of problems will be occurred, finally simulation works will offer information on implement and preparations for the future works.
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Chen, Yu Ping, and 陳昱頻. "The study of control and readout two-in-one integrated system for optoelectronic actuating/sensing microfluidic chip." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107CGU05124004%22.&searchmode=basic.
Full textBooks on the topic "Integrated Actuation System"
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Plassche, Rudy J. Analog Circuit Design: RF Analog-to-Digital Converters; Sensor and Actuator Interfaces; Low-Noise Oscillators, PLLs and Synthesizers. Boston, MA: Springer US, 1997.
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1938-, Huijsing Johan H., Steyaert Michiel 1959-, and Roermund, Arthur H. M. van., eds. Analog circuit design: Sensor and actuator interface electronics, integrated high-voltage electronics and power management, low-power and high-resolution ADC's. Boston: Kluwer Academic, 2004.
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Taylor, J. D., B. Elliott, D. Dickel, G. Keskar, J. Gaillard, M. J. Skove, and A. M. Rao. Harmonic detection of resonance methods for micro- and nanocantilevers: Theory and selected applications. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.7.
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This article examines the harmonic detection of resonance (HDR) methods for micro- and nanocantilevers, with particular emphasis on theory and selected applications. Micro- and nanocantilevers have the potential to revolutionize physical, chemical, and biological sensing. Microcantilevers in particular are easily integrated into standard high-volume silicon manufacturing processes, making them relatively inexpensive and mass-producible. This article begins with an overview of basic transduction mechanisms applicable to micro- and nanocantilever-based systems. It then considers several detection schemes for measuring the static and/or dynamic response of micro- and nanocantilevers. It goes on to discuss electrostatic actuation and capacitive detection, how HDR works, and the differences between the mechanical and electrical responses of an electrostatically actuated microcantilever. Finally, it presents a number of applications for micro- and nanocantilevers, along with detection results for cantilevered multiwall carbon nanotubes.
Book chapters on the topic "Integrated Actuation System"
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Denkena, Berend, Heinrich Klemme, Eike Wnendt, and Matthias Meier. "Thermally Induced Clamping Force Deviations in a Sensory Chuck for Thin-Walled Workpieces." In Lecture Notes in Production Engineering, 192–99. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34486-2_15.
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AbstractDeviations between nominal and actual tolerances are a challenging problem during turning processes of thin-walled workpieces. One main cause of these deviations is the clamping force applied by the turning chuck to hold the workpiece. Due to the low stiffness of thin-walled workpieces, large workpiece deformations can occur even when clamping forces are low. For this reason, the clamping force needs to be precisely adjusted. A possible approach are chucks with integrated actuators. As a result of the more direct power transmission, these chucks have a potentially higher clamping force accuracy compared to conventional external actuation. However, integrated actuators are additional heart sources resulting in thermal loads and thermally induced deformations of the chuck components. Due to the resulting mechanical distortion of the chuck system, the precise adjustment of clamping forces is not possible. Thus, this paper evaluates the thermally induced clamping force deviations on a novel turning chuck with four integrated electric drives. A test bench is used to analyse both a single drive and the combination of all four drives regarding the temperature effect on the clamping force adjustability. A clamping force deviation of up to 26% is observed. Based on the measured chuck temperature, a compensation method is introduced leading to a clamping force accuracy of 96.9%.
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Ko, Byung Geun, Hyok Chon Kwon, and Song Jun Lee. "A Self-Sensing Method for IPMC Actuator." In Emboding Intelligence in Structures and Integrated Systems, 111–15. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-13-3.111.
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Rudack, Maximilian, Iris Raffeis, Frank Adjei-Kyeremeh, Sayan Chatterjee, Uwe Vroomen, Andreas Bührig-Polaczek, Marie-Noemi Bold, et al. "Material Solutions to Increase the Information Density in Mold-Based Production Systems." In Internet of Production, 1–17. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-98062-7_21-1.
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AbstractProduction processes for the manufacturing of technical components are enabled by the availability and use of adequate engineering materials. Within the Internet of Production this work stream is dedicated to developing material and process-based solutions to increase the data availability during the manufacturing and operation of discontinuous mold-based production systems such as high-pressure die casting (HPDC) and injection molding (IM). This includes the development of data-driven alloy design strategies for additively manufactured mold components using tool steels as an initial use case as well as new surface-based smart sensor and actuator solutions. Material data and properties are tracked from the steel powder production via gas atomization until the final use in a mold to produce castings. Intermediate steps include the 3D printing of mold components via laser powder bed fusion and subsequent application of physical vapor deposition and thermal spraying-based smart multilayer coatings with sensor and actuator capabilities. The coating system is refined by selective laser patterning to facilitate the integration onto complex shape molding tool surfaces. Furthermore, molecular dynamics simulation-based methods are developed to derive material properties required for the modeling of polymer-based materials. By using this integrated methodology with the application of integrated computational materials engineering (ICME) methods from the metal powder for the mold printing up until the casting or molding process, the foundation for a holistic life cycle assessment within the integrated structural health engineering (ISHE) framework is laid for the produced tooling systems as well as the molded parts.
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Conrad, Stefan, Thomas Speck, and Falk J. Tauber. "Multi-material FDM 3D Printed Arm with Integrated Pneumatic Actuator." In Biomimetic and Biohybrid Systems, 27–31. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-20470-8_3.
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Jaminet, Jean, Gabriel Esquivel, and Shane Bugni. "Serlio and Artificial Intelligence: Problematizing the Image-to-Object Workflow." In Proceedings of the 2021 DigitalFUTURES, 3–12. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_1.
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AbstractVirtual design production demands that information be increasingly encoded and decoded with image compression technologies. Since the Renaissance, the discourses of language and drawing and their actuation by the classical disciplinary treatise have been fundamental to the production of knowledge within the building arts. These early forms of data compression provoke reflection on theory and technology as critical counterparts to perception and imagination unique to the discipline of architecture. This research examines the illustrated expositions of Sebastiano Serlio through the lens of artificial intelligence (AI). The mimetic powers of technological data storage and retrieval and Serlio’s coded operations of orthographic projection drawing disclose other aesthetic and formal logics for architecture and its image that exist outside human perception. Examination of aesthetic communication theory provides a conceptual dimension of how architecture and artificial intelligent systems integrate both analog and digital modes of information processing. Tools and methods are reconsidered to propose alternative AI workflows that complicate normative and predictable linear design processes. The operative model presented demonstrates how augmenting and interpreting layered generative adversarial networks drive an integrated parametric process of three-dimensionalization. Concluding remarks contemplate the role of human design agency within these emerging modes of creative digital production.
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Ince, Caner-Veli, Jan Geggier, and Annika Raatz. "Accuracy Examination of a Flexible Pin Gripper for Forging Applications." In Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2022, 343–53. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-10071-0_28.
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AbstractNowadays, cost reduction in manufacturing is getting relevant. One aspect to achieve that is utilising universal handling systems and their ability to adapt to changing objects and various geometries. By that, they minimise the number of handling systems and set-up times whereby cost savings are realised. In the field of forging, the objects vary their shape several times during the manufacturing process. In addition, the temperature can rise up to 1200 $${}^{\circ }\text {C}$$ ∘ C during the different steps of the forging process. Current flexible handling systems cannot handle those temperatures. The main reason for that is the material they consist of, primarily elastic polymers. Hence, there is a need for a handling system to close the gap between form flexible and high temperature handling. For this purpose, we developed such a handling system in our previous work, consisting of two jaws with pins in a matrix arrangement. Each pin can move in the longitudinal direction and adapt to different shapes. In response to the current temperatures for the pins, a material is used that withstands high temperatures. This paper presents the actuation and control of the developed handling system. The system is actuated by pressurised air which is continuously controlled to counteract the thermal expansion of the air caused by the high temperatures. Therefore, we integrate intelligent valves to fulfil the automation and control. Finally, we evaluate the accuracy of our system and optimise the valve control.
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Yan, Xudong, Liming Yu, Jiang’ao Zhao, Jian Fu, and Yongling Fu. "Hierarchical Modelling and Simulation of a Novel Integrated Electro-Mechanical Hydrostatic Actuator Based on Bond Graph." In Proceedings of 2018 Chinese Intelligent Systems Conference, 603–14. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2291-4_59.
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Parisi, Stefano. "Applying the DATEMATS Method and Tools to Wearable ICS Materials: A Dialogue Between E-textiles and Active Lighting Technologies for Caring and Well-Being." In Materialising the Future, 103–32. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-25207-5_6.
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AbstractThe chapter presents and discusses the theoretical background, original methodology, format, and results of the workshop “Interdisciplinary challenge on Emerging Materials and Technologies (EM&Ts)” with a focus on Interactive Connected and Smart (ICS) Materials for Wearable Technologies. ICS materials are defined as systems combining inactive materials, stimuli-responsive smart materials, and embedded sensing, computing, and actuating technologies. They can sense and communicate data from the body or the environment, and they can perform interactive behaviours. One of the application sectors where these are more exploited is wearable technologies. These materials can be embedded into clothing or worn on the body as electronic textiles (e-textiles), implants, or accessories. The challenge was used as a way to transfer new knowledge on innovative materials to design and engineering students and to establish a dialogue between students, researchers with extensive materials-focused expertise, and companies interested in EM&Ts. The workshop presented in this paper was held at Politecnico di Milano, Design School, from 12 to 16 July 2021. The methodology of the workshop follows a framework built by collecting, analysing, and systemically formalising innovative tools, methods, and approaches for designing and learning how to design with advanced materials. It identifies three phases: (1) Understanding the EM&Ts—where the fundamental knowledge is provided; (2) Exploring and Shaping the EM&Ts—where hands-on experimentation and tinkering is a way to stimulate ideas and understand the opportunities and limits of the materials and processes; (3) Applying the EM&Ts—the synthesis of the process when the material is embedded and embodied into a project. This framework defined the original structure and agenda of the whole workshop. Therefore, the workshop was based on a combination of hands-on experimentation, design activities, and lectures by the teaching staff of the four universities and by partnering companies (design pills). Students applied this unique design methodology developed within the project to design with four Emerging Materials and Technologies (EM&Ts). The method and tools developed by the staff supported students in understanding, exploring, and shaping, and applying EM&Ts, and finding design opportunities from their integration. Indeed, the main EM&Ts explored in the workshop are Interactive Connected and Smart Materials (ICS Materials), but all the other EM&Ts researched in the project were integrated: Nanomaterials, Experimental Wood-based Materials, and Advanced Growing Materials. In this interdisciplinary challenge, a real-life design brief was given to students with the cooperation of two partner companies: Comftech and SCILIF. The joint challenge with the title “Designing with ICS Materials: a dialogue between e-textiles and active lighting technologies” was about using the two patented technologies produced by the companies—a textile sensor detecting biosignals, and SunFibre active lighting system—as a platform to develop interactive, connected, and smart tangible interfaces for new application sectors focused on emotions and stress management, from well-being to entertainment, to safety. Twenty-three students worked together in six multi-disciplinary teams to find solutions for this challenge and to produce product concepts, prototypes, and material samples. The results are described and discussed in the chapter and include interactive garments for healthcare, improving safety at work, sharing emotions in leisure activities, and for the well-being of elderly people and kids. The discussion of the results and the whole methodology is informed by the feedback provided by students through a questionnaire and by teaching staff observation.
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Patrascu, Monica. "Design of Semi-Active Seismic Vibration Controllers Using Fuzzy Logic and Evolutionary Optimization." In Advances in Computer and Electrical Engineering, 18–43. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3531-7.ch002.
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In the light of recent technological advances, semi-active structural damping systems for seismic vibration mitigation are considered part of the civil engineering design process. Various actuating devices have been integrated into structures along with specifically designed control strategies. Semi-active dampers are nonlinear switching systems that require enhanced controllers. In order to minimize instability risk, a cascaded fuzzy control system that integrates the switch behaviour is designed. The inner loop uses a PI (proportional-integral) controller that is tuned with evolutionary optimization. The case study uses an electrohydraulic damper and a three-story building. To anticipate robustness to real-world disturbances and equipment failure, an uncertainty effect analysis is included in which three control systems are compared. First, structural and actuator disturbances are considered. Then, the case of switch failure brings forth the high reliability of the fuzzy control system, in what concerns using semi-active dampers in the development of civil structures.
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Saito, Ken, Minami Kaneko, and Fumio Uchikoba. "Ant-Like Walking Behavior of MEMS Microrobot With Artificial Neural Networks IC." In Handbook of Research on Biomimetics and Biomedical Robotics, 228–45. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2993-4.ch010.
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This chapter explains how the MEMS microrobot system could perform the walking behavior of ants. MEMS microrobot system consists of micro-mechanical systems and micro-electro systems. The micro-mechanical systems mimic the alternating tripod gait of an ant by the shape memory alloy-type rotary actuator and the link mechanism. The micro-electro systems mimic the electrical activity of biological neural networks using the artificial neural networks IC. The artificial neural networks IC generates the driving pulses of shape memory alloy-type rotary actuator without using software programs. The micro-mechanical systems and micro-electro systems are integrated as a robot system. As a result, the authors show that the MEMS microrobot system could perform the ant-like walking behavior with a speed of 20 mm/min. The MEMS microrobot system was 0.079 g in weight, 4 mm width, 4 mm length, and 5 mm height in size. The robot system needs only the electrical power source as an external device.
Conference papers on the topic "Integrated Actuation System"
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Saghafi, Mohammad H., Mohammad T. Ahmadian, Hadi Salehi, R. Monazami, and Azad Q. Zade. "Propose and Characteristics Study of a New Actuation Method for Micropumps, Using Membrane Buckling." In ASME 4th Integrated Nanosystems Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nano2005-87071.
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In this paper, we present a novel idea on actuation system in micropumps. The prominent goal of this paper is to propose and prove a mechanical actuation system which works in high frequency and has good ability in producing flow and pressure in micro actuation system. As like as other common micropumps, the proposed scheme is consisted of two check valves and an actuation space. The actuation space includes a volume of liquid in a chamber and a cylindrical membrane as the actuator. The main aspect of this idea is employment of buckling as a consequence of incensement of its internal pressure caused by temperature rising in the membrane. Rise of temperature is done by passing a controllable current through the membrane and it looses its temperature to its outer space in the chamber. Frequency and amperage of the current are the elements identifying the temperatures membrane vacillates between them. Meanwhile, a nice idea is setting these values in such a way that minimum temperature of the membrane becomes equal to the temperature which membrane starts buckling at. Thermal, elastic and thermoelastic equations of the membrane and fluids dynamic equations is obtained and studied. Using these equations, the validity of the scheme is proved by showing its ability of getting and loosing temperature and also fatigue resistance of the membrane, in high frequencies. The analytical proof is done for a specific design. In the proposed design, Aluminum 1100 is adopted as membrane material and thickness and radius of the membrane are 1 μm and 100 μm, respectively. Maximum flow rate and frequency of the system according to highest temperature of the membrane are depicted in diagrams. According to this design, maximum flow rate in rational frequency and amperage of the current is 8.25 μL/min. Maximum pressure in that design is 3.5Kpa.
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Eaton, J., I. Gilbert, D. Lacy, C. Lacy, M. J. Mcclelland, R. Meldolesi, J.-P. Pirault, and G. Roberts. "Latchcam: A Camshaft Integrated 2-Mode Variable Valve Actuation System." In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-0769.
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Haifeng Long, Helong Wang, Hongbo Zhang, Xibin Guo, and Lingyan Wang. "Research on A Lightweight Integrated Four-channel Electromechanical Actuation System." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.0163.
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Bushko, Dariusz A., Ralph C. Fenn, Michael J. Gerver, John R. Berry, Frank Phillips, and Donald J. Merkley. "Integrated actuation system for individual control of helicopter rotor blades." In 1996 Symposium on Smart Structures and Materials, edited by Inderjit Chopra. SPIE, 1996. http://dx.doi.org/10.1117/12.239038.
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Fangxing Li, K. Tomsovic, and Hantao Cui. "An Integrated Testbed for Power System Monitoring, Modeling, Control and Actuation." In 11th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.1735.
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Welsch, Felix, Susanne-Marie Kirsch, Paul Motzki, Marvin Schmidt, and Stefan Seelecke. "Vacuum Gripper System Based on Bistable SMA Actuation." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-7980.
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This paper presents the design and the realization of an innovative SMA actuated bistable vacuum suction cup. The sealed, compact and fully integrated design enables the positioning and transport of inherent stable components in mobile and stationary applications. The bistable actuator mechanism based on SMA wires combined with a bistable spring represent an energy-efficient, noiseless gripping system without the need for compressed air. Additionally, the self-sensing effect of the SMA enables a sensorless condition-monitoring and energy-efficient control. The mechanics consists of antagonistic SMA wires, which are laterally arranged and connected to the bistable spring via levers. The membrane is directly connected to the bistable spring. The actuation of the wires leads to a rotational movement of the levers thus changes the state of the bistable spring, which directly deforms the membrane. When the membrane is sealed connected to the workpiece, the deformation of the membrane generates a vacuum. The integrated microcontroller electronics manages the joule heating of the wires by measuring the transmitted electrical energy. By applying an electrical energy to the pre-strained SMA wire, the wire heats up and contracts due to the phase transformation from martensite to austenite. The contraction of the wire is accompanied by a significant change in electrical resistance, which enables a resistance based strain feedback. The integrated electronics is able to correlate this resistance change to the actual state of the bistable spring, which leads to a position feedback of the membrane. This allows an adequate electrical energy deposition in the SMA wire by turning-off the heating directly after the position toggle of the membrane. Thereby, a successful position toggle is ensured independent from the ambient temperature and the real supply voltage. The new position of the membrane is then held by the bistable spring without the use of additional energy. This concept leads to a reliable gripping system with fast actuation times.
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Jiakang, Wu, Shang Yaoxing, and Jiao Zongxia. "An energy optimization type of power-by-wire integrated loading actuation system." In 2016 IEEE/CSAA International Conference on Aircraft Utility Systems (AUS). IEEE, 2016. http://dx.doi.org/10.1109/aus.2016.7748138.
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Craker, Ryan, Benjamin V. Johnson, Haripriya Sakthivel, and David J. Cappelleri. "Design of a Miniaturized Actuation System for Robotic Lumbar Discectomy Tools." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22319.
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Abstract In this paper, we present the design of a miniaturized actuation system for robotic lumbar discectomy tools. Lumbar dis-cectomy is one of the most common types of back surgery in the United States. Our previous work proposed a new robotic lumbar discectomy (RLD) system consisting of teleoperated articulated instruments inside a robotic cannula for performing this operation. The robotic cannula is used for the independent translation and rotation of the instruments residing in it. Due to the large servo-motor based actuation systems of the initially developed instruments, it was not possible to achieve a fully integrated RLD system. Here, we present the design of a shape memory alloy actuation system for teleoperating RLD tools that allows full integration with the robotic cannula. More than a 10X size reduction in footprint has been achieved. Experimental results show that SMA-driven actuation system meets the instrument range-of-motion, manipulation, and grasping force requirements. Integrated system tests demonstrate the successful operation of the miniaturized RDL tools with the robotic cannula.
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Lee, Dae-Oen, Lae-Hyong Kang, and Jae-Hung Han. "Active Vibration Isolation System Using the Piezoelectric Unimorph With Mechanically Pre-Stressed Substrate." In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3651.
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In this paper, a pre-stressed piezoelectric unimorph made by a new fabrication method in room temperature, and an active vibration isolation system using the pre-stressed unimorph actuators are introduced. The fabricated piezoelectric unimorph, called PUMPS (piezoelectric unimorph with mechanically pre-stressed substrate), is an actuator in which actuation level is enhanced by displacement amplification mechanism that converts piezoelectric extension and contraction to large bending/pumping motion without sacrificing the actuation force. Preliminary vibration tests were performed to check the performance of PUMPS as actuators for active vibration control in a lab environment. Two feedback control schemes, the positive position feedback (PPF) and negative velocity feedback (NVF), were applied for active vibration control. Using a smart vibration isolation system with improved load capacity obtained by stacking pre-stressed piezoelectric unimorph actuators, about 10dB vibration reduction of the system was achieved near the resonant frequency region. With the preliminary vibration test results showing promising performance of PUMPS actuator in active vibration control, an integrated active vibration isolation system composed of PUMPS actuators is developed. The developed system contains compact analogue circuits and a sensor for PUMPS actuation and control, and power is supplied by Li-Polymer battery which means the system is completely standalone and portable. In addition, an integrated jitter isolation demonstration system was developed to demonstrate the degrading effect of jitter and the effectiveness of the developed integrated active vibration isolation system in improving the performance of optical payloads. Comparison of image qualities taken before and after the operation of vibration control system indicates that effective suppression of vibration disturbances can be achieved using the developed vibration isolation system with PUMPS actuators.
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Schumacher, Lauren N., and Ronald M. Barrett. "Guided Munition Adaptive Trim Actuation System for Aerial Gunnery." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8032.
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Twenty-two years ago, adaptive munitions using piezoelectric actuators were conceived. The Barrel-Launched Adaptive Munition (BLAM) program used piezoelectric elements to articulate a 10 deg. half-angle conical section on the nose of a 73 mm caliber supersonic wind tunnel model. The test article was designed to pivot the forward portion of the round about the aerodynamic center (which was collocated with the forward section center of gravity). While effective in trim articulation, the majority of actuator power was expended resisting nose inertia rather than manipulating air loads. Adaptive actuators for guided munitions have progressed greatly since that time. In 2001, major advances canard articulation for guided bullets were achieved. These were followed by the Shipborne Countermeasure Range-Extended Adaptive Munition (SCREAM) program. While the piezoelectric effectors designed for these historic programs would allow for respectable deflections, the invention of post-buckled piezoelectric (PBP) actuation would dramatically boost total deflection levels while maintaining full blocked force capabilities. These PBP actuators would be used in a variety of flight control mechanisms for different classes of UAVs. In addition to these applications, the high bandwidth of piezoelectric actuators are particularly well suited to guided munitions. This paper describes the structural mechanics and dynamics of the PBP-class actuator as integrated in guided munitions. As a critical element in ultra-high bandwidth flight control actuation, PBP actuators have been shown to possess pseudo-corner frequencies in excess of 1 kHz. Additionally, PBP actuators have been integrated into tight packing volumes in guided cannon shells while demonstrating setback acceleration tolerances of tens of thousands of g’s. Previous work illustrates several different actuation configurations as well as integration methods with canards and fins. This study links the structural mechanics of previous authors with aeromechanics to arrive at performance predictions in aerial combat. The paper lays out a guided aerial round based on the PBP concept, then uses circular error probable (CEP) predictions in a standard atmosphere quantify the required deflections for engagement of a variety of targets. The results show one order of magnitude fewer rounds being expended per kill in direct air-to-air engagements with peer aircraft. The paper shows that PBP-class actuators could be used for defensive engagements as well with the engagement of oncoming hostile missiles. The paper concludes with prediction of engagement improvements for modern aircraft like the F-35 with 25 mm rounds as well as aircraft like the F-15 with 20 mm guided ammunition.