Journal articles: 'Electro-mechanical engineering'

1

Naidu, D. Subbaram. "Electro-mechanical engineering, an introduction." Mechatronics 6, no. 6 (September 1996): 729–31. http://dx.doi.org/10.1016/0957-4158(96)00016-5.

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Altintas, Yusuf, and Elizabeth A. Croft. "Electro-Mechanical Design Engineering: A Progress Report and Future Directions for Mechatronics Education." International Journal of Mechanical Engineering Education 30, no. 4 (October 2002): 325–39. http://dx.doi.org/10.7227/ijmee.30.4.5.

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The Electro-Mechanical Design Engineering programme has been in place as a five-year combined interdisciplinary programme in mechanical and electronics engineering at the University of British Columbia since 1994. The students take almost all mechanical and most of the core electronics engineering courses during the first four years. They spend at least two four-month-long summer terms in industry as cooperative education students, where they receive training in practical design, drafting, manufacturing and instrumentation. The fifth year is dedicated to the complete design and manufacturing of a computer controlled machine in industry. Teams of students design the complete mechanical system with actuators, sensors and computer control units under the joint supervision of a faculty member and a qualified engineer designated by the sponsoring company. Upon the completion and testing of the full electro-mechanical machine and four graduate courses, the students receive a Bachelor and Master of Engineering in Electro-Mechanical Engineering. The Electro-Mechanical students receive academic and industrial training in mechanical, electronics and software engineering, and are in high demand in industry and academia upon graduation. The present status and future of this programme, including the proposed expansion of the programme to the M.A.Sc. Degree (currently under faculty review), is discussed.

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Subbaram Naidu, D. "Understanding electro-mechanical engineering, an introduction to mechatronics." Mechatronics 6, no. 5 (August 1996): 611–12. http://dx.doi.org/10.1016/0957-4158(96)00017-7.

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Sharkey, N., and A. Sharkey. "Electro-mechanical robots before the computer." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 1 (December 1, 2008): 235–41. http://dx.doi.org/10.1243/09544062jmes1262.

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There were several electro-mechanical robots in the period leading up to the birth of the Journal of Mechanical Engineering Science in 1959. The authors examine the rise and fall of the electro-mechanical robot in the early twentieth century. After exploring the roots and uses of the term ‘robot’, a historical survey of the early landmark robots is provided. Some were controlled remotely by wireless radio signals or by selectively operating relays with whistle tones or by converting sound into light. Long before the invention of the modern digital computer, there were robots working autonomously with simple sensing and open-loop control. There were even learning machines. Many of the machines were inspired by and in turn inspired the development of mechanistic biology in the early twentieth century. The article ends with the demise of the electro-mechanical robot as the computer is developed and the new artificial intelligence takes hold.

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Samimi Gharaie, Sadaf, Amir Seyfoori, Bardia Khun Jush, Xiong Zhou, Erik Pagan, Brent Godau, and Mohsen Akbari. "Silicate-Based Electro-Conductive Inks for Printing Soft Electronics and Tissue Engineering." Gels 7, no. 4 (November 27, 2021): 240. http://dx.doi.org/10.3390/gels7040240.

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Hydrogel-based bio-inks have been extensively used for developing three-dimensional (3D) printed biomaterials for biomedical applications. However, poor mechanical performance and the inability to conduct electricity limit their application as wearable sensors. In this work, we formulate a novel, 3D printable electro-conductive hydrogel consisting of silicate nanosheets (Laponite), graphene oxide, and alginate. The result generated a stretchable, soft, but durable electro-conductive material suitable for utilization as a novel electro-conductive bio-ink for the extrusion printing of different biomedical platforms, including flexible electronics, tissue engineering, and drug delivery. A series of tensile tests were performed on the material, indicating excellent stability under significant stretching and bending without any conductive or mechanical failures. Rheological characterization revealed that the addition of Laponite enhanced the hydrogel’s mechanical properties, including stiffness, shear-thinning, and stretchability. We also illustrate the reproducibility and flexibility of our fabrication process by extrusion printing various patterns with different fiber diameters. Developing an electro-conductive bio-ink with favorable mechanical and electrical properties offers a new platform for advanced tissue engineering.

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Gai, Jiang Tao, Shou Dao Huang, Guang Ming Zhou, and Yi Yuan. "Design and Analysis of a Novel Structure Form of Electro-Mechanical Transmission." Advanced Materials Research 694-697 (May 2013): 497–502. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.497.

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In order to search after a new way of the propulsion system of tracked vehicle, a novel structure form of electro-mechanical transmission was developed in this paper, through analyzing the advantages and disadvantages of existing projects of electric drive system for tracked vehicle. It could increase the rate of power exertion obviously and synthesize the mechanical and electrical strongpoint. And based on the structure form, an electro-mechanical transmission was designed with double electromotor added planetary mechanism of steering power coupling and gearshift, considering engineering realization. And then straight-line driving and steering performances of the transmission were calculated which proved that the novel electro-mechanical transmission could meet the requirement of tracked vehicle propulsion well.

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Съянов, Сергей, Sergey Siyanov, Алина Папикян, and Alina Papikyan. "Functionally-directed technologies at electro-erosion processing." Science intensive technologies in mechanical engineering 2018, no. 2 (February 1, 2018): 35–39. http://dx.doi.org/10.12737/article_5a70c1056a7c84.65409961.

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An electro-erosion processing (EEP) is one of the efficient and economically advantageous methods of material machining in mechanical engineering. The EEP has a number of considerable advantages widening a field of practical use of this machining method at manufacturing different products of mechanical engineering. Currently used technologies of product electro-erosion processing ensure essential operational characteristics for limited working conditions only. The solution of this matter is possible on the basis for product manufacturing by electro-erosion methods of functionally-directed technology application. With the aid of this methodology still at the stage of engineering procedure design it is possible to ensure the specified operational characteristics depending on electro-erosion processing modes.

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Li, Xueliang, Xinyu Kang, Xin Ba, Zengxiong Peng, Shujun Yang, and Zhifu Zhao. "A Design Methodology for Dual-Mode Electro-Mechanical Transmission Scheme Based on Jointing Characteristics." Energies 15, no. 15 (July 28, 2022): 5482. http://dx.doi.org/10.3390/en15155482.

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Electro-mechanical transmission is the best choice for the transmission system of military, engineering and other heavy special vehicles. The scheme design is fundamental and key to realize the original innovation of the electro-mechanical transmission. Therefore, a novel design method of a planetary-gear scheme is proposed for electro-mechanical transmission. According to the distribution of mechanical points and the speed continuous condition of mode switching, the mode combination law of a dual-mode electro-mechanical transmission is obtained, i.e., the input split mode based on the scheme of three-degree-of-freedom (3-DOF) and the compound split mode based on the scheme of 2-DOF. Moreover, a design method for an electro-mechanical transmission scheme is proposed based on the mode combination law. Two single-mode schemes are combined to form a dual-mode scheme, and then mode jointing, control logic, isomorphism and other screening conditions are in turn used to screen schemes; therefore, two optimized schemes are obtained ultimately. Lastly, by analyzing the characteristics of speed, torque and the power split of the optimized schemes, the accuracy of the proposed design method in this paper is verified. The proposed design method can provide new ideas of designing multi-mode and multi-output electro-mechanical transmission schemes.

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Hsu, Hsiang Chen, Shen Wen Ju, Jie Rong Lu, and Yue Min Wan. "Electromigration Analysis and Electro-Thermo-Mechanical Design for Package-on-Package (POP)." Advanced Materials Research 126-128 (August 2010): 929–34. http://dx.doi.org/10.4028/www.scientific.net/amr.126-128.929.

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An electro-thermo coupling finite element model is developed to investigate the electromigration and electro-thermo-mechanical effects on electronic packaging. Sn4.0Ag0.6Cu (SAC405) solder ball are commonly used on POP package in this research. Current density arising in the Copper trace above SAC405 solder ball implies the hot spot where results in an electromigration along the current direction. Finite element predictions reveal the peak electro-thermo-mechanical effective stress is located at the regions where electromigration potentially occurred. Current crowding, temperature distribution and electro-thermo induced effective stress distribution are predicted. A submodel scheme is applied for evaluation of equivalent life time of solder ball. Reliability analysis on electro-thermo-mechanical for SAC405 solder ball is evaluated.

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Wang, Weiguang, Jun-Xiang Chen, Yanhao Hou, Paulo Bartolo, and Wei-Hung Chiang. "Investigations of Graphene and Nitrogen-Doped Graphene Enhanced Polycaprolactone 3D Scaffolds for Bone Tissue Engineering." Nanomaterials 11, no. 4 (April 6, 2021): 929. http://dx.doi.org/10.3390/nano11040929.

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Scaffolds play a key role in tissue engineering applications. In the case of bone tissue engineering, scaffolds are expected to provide both sufficient mechanical properties to withstand the physiological loads, and appropriate bioactivity to stimulate cell growth. In order to further enhance cell–cell signaling and cell–material interaction, electro-active scaffolds have been developed based on the use of electrically conductive biomaterials or blending electrically conductive fillers to non-conductive biomaterials. Graphene has been widely used as functioning filler for the fabrication of electro-active bone tissue engineering scaffolds, due to its high electrical conductivity and potential to enhance both mechanical and biological properties. Nitrogen-doped graphene, a unique form of graphene-derived nanomaterials, presents significantly higher electrical conductivity than pristine graphene, and better surface hydrophilicity while maintaining a similar mechanical property. This paper investigates the synthesis and use of high-performance nitrogen-doped graphene as a functional filler of poly(ɛ-caprolactone) (PCL) scaffolds enabling to develop the next generation of electro-active scaffolds. Compared to PCL scaffolds and PCL/graphene scaffolds, these novel scaffolds present improved in vitro biological performance.

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Motamedi, M. Edward. "Micro-opto-electro-mechanical systems." Optical Engineering 33, no. 11 (November 1, 1994): 3505. http://dx.doi.org/10.1117/12.181572.

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Midolo, Leonardo, Albert Schliesser, and Andrea Fiore. "Nano-opto-electro-mechanical systems." Nature Nanotechnology 13, no. 1 (January 2018): 11–18. http://dx.doi.org/10.1038/s41565-017-0039-1.

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Garcia, A., J. Cusido, J. A. Rosero, J. A. Ortega, and L. Romeral. "Reliable electro-mechanical actuators in aircraft." IEEE Aerospace and Electronic Systems Magazine 23, no. 8 (August 2008): 19–25. http://dx.doi.org/10.1109/maes.2008.4607895.

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Bordatchev, Evgueni V. "Electro-thermally driven microgrippers for micro-electro-mechanical systems applications." Journal of Micro/Nanolithography, MEMS, and MOEMS 4, no. 2 (April 1, 2005): 023011. http://dx.doi.org/10.1117/1.1899312.

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Huang, Jingli, Guorong Zhao, and Xiangyu Zhang. "MEMS gyroscope/TAM-integrated attitude estimation based on moving horizon estimation." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 231, no. 8 (June 13, 2016): 1451–59. http://dx.doi.org/10.1177/0954410016652920.

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To improve the accuracy of the attitude sensor micro electro mechanical system gyroscope in low cost satellite, a nonlinear moving horizon estimation algorithm based on micro-electro mechanical system gyroscope/three-axis magnetometer is proposed in this paper. First, a quaternion micro-electro mechanical system gyroscope/three-axis magnetometer-integrated attitude estimation model is established so as to improve the accuracy of micro-electro mechanical system gyroscope. Thanks to the concealment and autonomy, these two low cost sensors have great potential in the military area. Second, taking advantage of optimal problem in coping with constraints, a real time moving horizon estimation algorithm with equality constraint is designed to deal with the disability of solving quaternion normalization analytically in the frame work of Kalman. In this algorithm, Gauss–Newton iterative method is used to obtain the optimal state estimation in the “window”. Meanwhile, strong tracking filter of arrival cost is designed outside of the “window” to enhance system robustness for that three-axis magnetometer is vulnerable to external interference. Third, the proposed MHE is applied in the micro-electro mechanical system gyroscope/three-axis magnetometer attitude estimation system. The simulation results show that the method has higher accuracy and robustness.

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Tang, Yun, Yves Brunel, Pascal Goubertier, and Albert Morelli. "Integrated modeling of electro-mechanical products." Computers in Industry 23, no. 1-2 (November 1993): 117–28. http://dx.doi.org/10.1016/0166-3615(93)90121-g.

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Xie, Huikai, and Frederic Zamkotsian. "Editorial for the Special Issue on Optical MEMS." Micromachines 10, no. 7 (July 7, 2019): 458. http://dx.doi.org/10.3390/mi10070458.

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Optical micro-electro-mechanical systems (MEMS), micro-opto-electro-mechanical systems (MOEMS), or optical microsystems are devices or systems that interact with light through actuation or sensing at a micron or millimeter scale [...]

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Corigliano, A., L. Domenella, and G. Langfelder. "On-Chip Mechanical Characterization using an Electro-thermo-mechanical Actuator." Experimental Mechanics 50, no. 6 (June 30, 2009): 695–707. http://dx.doi.org/10.1007/s11340-009-9266-1.

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Kong, Xiang Zhen, and Fa Ye Zang. "Pressure Pulsation System in Electro-Hydraulic Control Valve of Engineering Mechanical." Advanced Materials Research 418-420 (December 2011): 1800–1803. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1800.

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In order to overcome steady-state error and low-velocity scrawl problems caused by friction in electro-hydraulic control system of engineering mechanical, method for overcoming nonlinear friction force of pressure pulsation system is adopted in this study. A new pressure pulsation system is proposed, mathematical model of the pressure pulsation system is established, based on the MATLAB fuzzy control strategy and simulation. The results show good dynamic performance of the system.

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Tippayaphalapholgul, Rattanan, and Yasothorn Sapsathiarn. "Electro-Mechanical Response and Engineering Properties of Piezocomposite with Imperfect Interface." MATEC Web of Conferences 51 (2016): 01005. http://dx.doi.org/10.1051/matecconf/20165101005.

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Zhang, Ping, Chun Lei Sun, and Qing’en Li. "Study and Simulation of Electro-Mechanical Sensor." Advanced Materials Research 282-283 (July 2011): 440–43. http://dx.doi.org/10.4028/www.scientific.net/amr.282-283.440.

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The relevant introduction development of the micro electromechanical systems (MEMS) is carried out in this paper. The pressure sensor is an important component of micro electromechanical systems (MEMS). Many aspects of the pressure sensor are studied，simulated and analyzed by us. The principle of work of the pressure sensor is elaborated in details and the material selection is studied also. The correlative performance indexes, such as precision and the repeatability of pressure sensor, are explored. In the following part of this paper, through the finite element simulation software, the analytic study of some performance parameters of the sensor chip is carried out in detail. Through the analysis, we find that the sensor designed here has many advantages.

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Zheng, Kai, and Xing Hui Dong. "Experimental Analysis of Electro-Mechanical Characterization of Piezoelectric Stack Actuators." Advanced Materials Research 129-131 (August 2010): 28–32. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.28.

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This paper presents the results of experimental analysis and theoretical modeling of piezoelectric stack actuators. The focus of this paper is to understand the behavior of piezoelectric materials under the combined electro-mechanical loadings scenario, and to determine fundamental properties and optimum working conditions. Some parameters, including output displacement, hysteresis, output force and mechanical stiffness, are evaluated under varied pre-stress level and driven voltage values representative of in-service conditions. The measurements indicate strong dependence of the actuator piezoelectric properties and stiffness on the electro-mechanical loading conditions. This research also identified and calculated some parameters of the induced strain actuators electro-mechanical model, which are necessary to performing design optimization to achieve maximum energy transfer and minimum power consume.

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Fang, Susu, Zengcai Wang, and Lei Zhao. "Research on the automotive sensor–aided low-cost inertial navigation system for land vehicles." Advances in Mechanical Engineering 11, no. 1 (January 2019): 168781401882287. http://dx.doi.org/10.1177/1687814018822876.

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When a low-cost micro-electro-mechanical system inertial measurement unit is used for a vehicle navigation system, errors will quickly accumulate because of the large micro-electro-mechanical system sensor measurement noise. To solve this problem, an automotive sensor–aided low-cost inertial navigation system is proposed in this article. The error-state model of the strapdown inertial navigation system has been derived, and the measurements from the wheel speed sensor and steer angle sensor are used as the new observation vector. Then, the micro-electro-mechanical system inertial measurement unit/wheel speed sensor/steer angle sensor–integrated system is established based on adaptive Kalman filtering. The experimental results show that the positioning error of micro-electro-mechanical system inertial measurement unit/wheel speed sensor/steer angle sensor is 94.67%, 98.88%, and 97.88% less than the values using pure strapdown inertial navigation system in the east, north, and down directions, respectively. The yaw angle error is reduced to less than 1°, and the vehicle velocity estimation of micro-electro-mechanical system inertial measurement unit/wheel speed sensor/steer angle sensor–integrated navigation system is closer to the reference value. These results show the precision of the integrated navigation solution.

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Zhai, Chongpu, Dorian Hanaor, Gwénaëlle Proust, Laurence Brassart, and Yixiang Gan. "Interfacial electro-mechanical behaviour at rough surfaces." Extreme Mechanics Letters 9 (December 2016): 422–29. http://dx.doi.org/10.1016/j.eml.2016.03.021.

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Fang, Xi, Si Rong Zhu, Zhuo Qiu Li, and Yong Lv. "Effects of Different Surface Modification to the Carbon Fiber Electro-Mechanical Response." Advanced Materials Research 214 (February 2011): 597–601. http://dx.doi.org/10.4028/www.scientific.net/amr.214.597.

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The interface properties of carbon fiber(CF) within the composite material has a great effect to its functional characteristics. The work is focused on the research of CF electro-mechanical response after its surface modification using acetone and nitric acid oxidation. With characterization by XPS and SEM, there exist the various changes on the CF surface not only the chemical elements or chemical groups. With changing CF’s resistance under uniaxial tension, the CF has differerent electro-mechanical response to loading force. Through statistical analysis, the research shows the sensibility of CF to the electro-mechanical effect can be improved by the surface modification with acetone process or nitric acid oxidization.

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Nowicki, B., R. Pierzynowski, and S. Spadło. "Investigation of Electro-Discharge Mechanical Dressing (EDMD) of Diamond Abrasive Wheels with Conductive Bonds Using Brush Electrodes." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 220, no. 3 (March 1, 2006): 421–28. http://dx.doi.org/10.1243/095440505x32922.

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The authors have presented a new method of electro-discharge mechanical dressing of ultra-hard abrasive tools with metal bonds in which brush electrodes were used. This kind of machining is denoted as EDMD (electro-discharge mechanical dressing) and combines features of electro-discharge machining with mechanical treatment so that thin layers of the bond are removed. Moreover, the brush electrode offers the additional possibility of introducing the advantageous (having the anchorage of the abrasive grains in mind) state of compressive stress and strain hardening of the outer layer of the bond.

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Kaur, Naveet, Lingfang Li, Suresh Bhalla, and Yong Xia. "A low-cost version of electro-mechanical impedance technique for damage detection in reinforced concrete structures using multiple piezo configurations." Advances in Structural Engineering 20, no. 8 (November 21, 2016): 1247–54. http://dx.doi.org/10.1177/1369433216677124.

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The electro-mechanical impedance technique has developed rapidly during the past few decades as a reliable health monitoring component of civil structures. However, the high cost of impedance analyzer/LCR meter conventionally used for data acquisition in the electro-mechanical impedance technique restricts its wide use in real applications. This article provides a comprehensive study of exploring the low-cost electro-mechanical impedance technique for health monitoring of concrete under destructive testing using multiple piezo configurations. The experimental scheme ensures separate acquisition of both the real and the imaginary components of the electro-mechanical impedance signature for detailed analysis, a feature not available in some previous low-cost adaptations. The piezo configurations covered here for comparison are the surface-bonded piezo configuration, the embedded piezo configuration, and the metal wire piezo configuration. The repeatability of the proposed low-cost electro-mechanical impedance technique is checked and the results are compared with the traditional counterpart utilizing conventional LCR meter. The two electro-mechanical impedance approaches show similar trends of the conductance signature for all configurations. In particular, the metal wire piezo configuration can be adopted as an excellent alternative in practice for reinforced concrete structures when the direct surface bonding is not feasible. Overall, the low-cost version of the electro-mechanical impedance technique is effective to detect the presence of the damage.

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Ravichandran, Niranjani, and R. Subhashini. "Micro electro mechanical systems in nephrology." International Journal of Bioinformatics Research and Applications 17, no. 5 (2021): 434. http://dx.doi.org/10.1504/ijbra.2021.10043923.

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Ravichandran, Niranjani, and R. Subhashini. "Micro electro mechanical systems in nephrology." International Journal of Bioinformatics Research and Applications 17, no. 5 (2021): 434. http://dx.doi.org/10.1504/ijbra.2021.120198.

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Hussein, Hussein, Aref Tahhan, Patrice Le Moal, Gilles Bourbon, Yassine Haddab, and Philippe Lutz. "Dynamic electro-thermo-mechanical modelling of a U-shaped electro-thermal actuator." Journal of Micromechanics and Microengineering 26, no. 2 (January 6, 2016): 025010. http://dx.doi.org/10.1088/0960-1317/26/2/025010.

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Utkin, Vadim I., and Hao-Chi Chang. "Sliding mode control on electro-mechanical systems." Mathematical Problems in Engineering 8, no. 4-5 (2002): 451–73. http://dx.doi.org/10.1080/10241230306724.

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The first sliding mode control application may be found in the papers back in the 1930s in Russia. With its versatile yet simple design procedure the methodology is proven to be one of the most powerful solutions for many practical control designs. For the sake of demonstration this paper is oriented towards application aspects of sliding mode control methodology. First the design approach based on the regularization is generalized for mechanical systems. It is shown that stability of zero dynamics should be taken into account when the regular form consists of blocks of second-order equations. Majority of applications in the paper are related to control and estimation methods of automotive industry. New theoretical methods are developed in the context of these studies: sliding made nonlinear observers, observers with binary measurements, parameter estimation in systems with sliding mode control.

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Wang, Qiao Yi, and Juan Chen. "Teaching Reform and Thinking of the Course Electro-Mechanical Systems Dynamics Based on Higher Engineering Education Mode." Applied Mechanics and Materials 397-400 (September 2013): 2739–42. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.2739.

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Electro-mechanical system dynamics is a professional course of integrated post-graduate, it combined with basic theory and practical applications, it belongs to cross - disciplinary of mechanics and mechanical engineering, it not only has the highly abstract and exact science of basic theory , but also has the extensiveness and depth of the practical application.For graduate students’ strong interest and desire involved in taking part in the actual subject actively, electro-mechanical system dynamics course content and teaching model are reformed, case teaching method is introduced, assessment methods are innovated, enable students to master the problem-solving approach and apply it to their own research projects.At the same time，it also guides the students to discover and ask new questions from the actual phenomenon and achieves good results in the practice of the process in training research - oriented students.

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Putz, Barbara, Oleksandr Glushko, Vera M. Marx, Christoph Kirchlechner, Daniel Toebbens, and Megan J. Cordill. "Electro-mechanical performance of thin gold films on polyimide." MRS Advances 1, no. 12 (2016): 773–78. http://dx.doi.org/10.1557/adv.2016.233.

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ABSTRACTThin metal films on compliant polymer substrates are of major interest for flexible electronic technologies. The suitability of a film system for flexible applications is based on the electro-mechanical performance of the metal film/polymer substrate couple. This study demonstrates how a 10 nm Cr interlayer deteriorates the electro-mechanical performance of 50 nm Au films on polyimide substrates by inducing the formation of cracks in the ductile layer. Combined in-situ measurements of the film lattice strains with x-ray diffraction and electrical resistance with four point probe of the Au-Cr and Au layers during uniaxial straining confirmed different electro-mechanical behaviours. For Au films with a Cr interlayer the film stress decreases rapidly as cracking initiates and reaches a plateau as the saturation crack spacing is reached. Crack formation and stress drop correspond to a rapid increase in the film resistance. Without the interlayer the Au film stress reaches a maximum around 2% engineering strain and remains constant throughout the experiment. The film resistance is unaffected by the applied elongation up to a maximum strain of 15%, giving no sign of cracking in the metal layer. The outstanding electro-mechanical performance of the gold film indicates that adhesion layers, like Cr, may not be necessary to improve the performance of ductile films on polymers.

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KAWANA, Takeshi. "Trend of automatic assembly in electro-mechanical products." Journal of the Japan Society for Precision Engineering 57, no. 2 (1991): 236–39. http://dx.doi.org/10.2493/jjspe.57.236.

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Zhang, Hou Sheng. "Research on an Electro-Mechanical Hybrid Power Controller." Advanced Materials Research 121-122 (June 2010): 878–81. http://dx.doi.org/10.4028/www.scientific.net/amr.121-122.878.

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Electro-mechanical hybrid power controller (EMHPC) is a kind of switch with a breaker as mechanical switch and an insulated gate bipolar transistor (IGBT) as solid-state switch. It is a key element of electrical load management center (ELMC) of the more electric aircraft (MEA). On the condition of high voltage (270VDC) and large current (200A), the proposed EMHPC in this paper features great simplicity and reliability. It has no contact chatter when the controller is turned on or off, main circuit will be shut down when contactor fault happens, it also has the feature of over-current protection for solid state switching device when large current occurs in the working circuit. The proposed controller is supported by experimental results.

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Kim, J., W. Jung, C. H. Jo, J. Shelton, and W. Craft. "Mechanical properties of cellulose-based electro-active paper." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 4 (April 1, 2008): 577–83. http://dx.doi.org/10.1243/09544062jmes652.

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Mechanical properties of cellulose-based electro-active paper (EAPap) are characterized in this work. Cellulose-based EAPap has been studied as a potential actuator concept, as a result of its low actuation voltage, lightweight, low power consumption, biodegradability and low cost. EAPap is made from cellulose paper, coated with thin electrically conducting electrodes. This EAPap shows a reversible and reproducible bending movement as well as a longitudinal displacement under electric field excitation. However, the EAPap is a complex anisotropic material, which has not been extensively characterized. It is important to have extended property data for EAPap so that the actuator performance can be optimized, and this requires additional material testing. Our material test results show that EAPap has two distinct elastic constants. The initial Young's modulus of EAPap is in the range of 4–9 GPa, which is higher than other polymer materials. This modulus is also orientation dependent, which may be associated with the piezoelectricity of the EAPap materials. Another important property is that the dynamically induced mechanical strains of these materials exhibit linear creep behaviour as confirmed by constant stress and low frequency cyclic loading tests. From scanning electron microscope investigations, cellulose EAPap exhibits a layered, anisotropic cellulose macromolecular structure that exhibits both elastic and plastic deformations, as well as substantial temperature and humidity dependence.

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De Pasquale, Giorgio. "Additive Manufacturing of Micro-Electro-Mechanical Systems (MEMS)." Micromachines 12, no. 11 (November 8, 2021): 1374. http://dx.doi.org/10.3390/mi12111374.

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Recently, additive manufacturing (AM) processes applied to the micrometer range are subjected to intense development motivated by the influence of the consolidated methods for the macroscale and by the attraction for digital design and freeform fabrication. The integration of AM with the other steps of conventional micro-electro-mechanical systems (MEMS) fabrication processes is still in progress and, furthermore, the development of dedicated design methods for this field is under development. The large variety of AM processes and materials is leading to an abundance of documentation about process attempts, setup details, and case studies. However, the fast and multi-technological development of AM methods for microstructures will require organized analysis of the specific and comparative advantages, constraints, and limitations of the processes. The goal of this paper is to provide an up-to-date overall view on the AM processes at the microscale and also to organize and disambiguate the related performances, capabilities, and resolutions.

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SHI, F., P. RAMESH, and S. MUKHERJEE. "DYNAMIC ANALYSIS OF MICRO-ELECTRO-MECHANICAL SYSTEMS." International Journal for Numerical Methods in Engineering 39, no. 24 (December 30, 1996): 4119–39. http://dx.doi.org/10.1002/(sici)1097-0207(19961230)39:24<4119::aid-nme42>3.0.co;2-4.

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Wang, Yanzheng, Yongfeng Zheng, Mikhail V. Golub, Sergey I. Fomenko, Guoliang Huang, Weiqiu Chen, and Chuanzeng Zhang. "Electro-mechanical demultiplexer enabled by tunable electric circuits." Extreme Mechanics Letters 51 (February 2022): 101610. http://dx.doi.org/10.1016/j.eml.2022.101610.

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Wang, Jingjing, Baozheng Xu, Libo Shi, Longyang Zhu, and Xi Wei. "Prospects and Challenges of AI and Neural Network Algorithms in MEMS Microcantilever Biosensors." Processes 10, no. 8 (August 21, 2022): 1658. http://dx.doi.org/10.3390/pr10081658.

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This paper focuses on the use of AI in various MEMS (Micro-Electro-Mechanical System) biosensor types. Al increases the potential of Micro-Electro-Mechanical System biosensors and opens up new opportunities for automation, consumer electronics, industrial manufacturing, defense, medical equipment, etc. Micro-Electro-Mechanical System microcantilever biosensors are currently making their way into our daily lives and playing a significant role in the advancement of social technology. Micro-Electro-Mechanical System biosensors with microcantilever structures have a number of benefits over conventional biosensors, including small size, high sensitivity, mass production, simple arraying, integration, etc. These advantages have made them one of the development avenues for high-sensitivity sensors. The next generation of sensors will exhibit an intelligent development trajectory and aid people in interacting with other objects in a variety of scenario applications as a result of the active development of artificial intelligence (AI) and neural networks. As a result, this paper examines the fundamentals of the neural algorithm and goes into great detail on the fundamentals and uses of the principal component analysis approach. A neural algorithm application in Micro-Electro-Mechanical System microcantilever biosensors is anticipated through the associated application of the principal com-ponent analysis approach. Our investigation has more scientific study value, because there are currently no favorable reports on the market regarding the use of AI with Micro-Electro-Mechanical System microcantilever sensors. Focusing on AI and neural networks, this paper introduces Micro-Electro-Mechanical System biosensors using artificial intelligence, which greatly promotes the development of next-generation intelligent sensing systems, and the potential applications and prospects of neural networks in the field of microcantilever biosensors.

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ELIAHOU-NIV, S. "A MECHANICAL DARLINGTON MODEL FOR MEMS APPLICATIONS." Journal of Circuits, Systems and Computers 15, no. 03 (June 2006): 313–19. http://dx.doi.org/10.1142/s0218126606002988.

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This paper presents the design and Micro-Electro-Mechanical-System (MEMS) realization of a Darlington-pair circuit used in power electronics engineering. MEMS are integrated micro devices or systems combining electrical and mechanical components fabricated using integrated circuits processing techniques. The size range of the components is from micrometers up to a couple of millimeters. Current MEMS applications include almost all engineering fields. Since MEMS is a newly developed technology, very few studies have been carried out directly on knowledge transferring from different engineering disciplines. The objective of this paper is to demonstrate a mechanical model developing of a power electronic circuit, to characterize and to analyze its performance and its suitability to MEMS application.

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JIANG, Zhuangde. "Special Micro-electro-mechanical Systems Pressure Sensor." Journal of Mechanical Engineering 49, no. 06 (2013): 187. http://dx.doi.org/10.3901/jme.2013.06.187.

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Shyu, K. K., and Y. Y. Lee. "Identification of Electro-mechanical Actuators within Limited Stroke." Journal of Vibration and Control 16, no. 12 (May 26, 2010): 1737–61. http://dx.doi.org/10.1177/1077546309341606.

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Lin, Chi Hsiang. "Whole-Circuit Models for the BDCM/LBDCM Driven Electro-Mechanical Systems." Advanced Materials Research 301-303 (July 2011): 1687–92. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.1687.

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BDCM/ LBDCM driven systems include both the electrical and mechanical parts. So there is a gap for students of electrical engineering background to learn about the subject, even though there have been so many activities (e.g. simulations and experiments) to assist their learning. In this paper, we proposed the whole-circuit models to overcome the difficulty. Since the EE department students are good at circuit analysis, such whole-circuit models will be a good medium for them to solve problems regarding electro-mechanical interactions. For example, the model can be used to modify the torsional mode frequencies tested offline by taking into account the influence of electrical power systems.

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Testoni, P., F. Cau, A. Portone, M. Di Mauro, A. Fanni, E. Salpietro, and P. Sonato. "Electro-mechanical analysis of the European superconducting dipole." Fusion Engineering and Design 82, no. 5-14 (October 2007): 1423–30. http://dx.doi.org/10.1016/j.fusengdes.2007.05.037.

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Acquaviva, D., D. Bouvet, D. Tsamados, P. Coronel, T. Skotnicki, and A. M. Ionescu. "Micro-electro-mechanical (MEM) diode switch." Microelectronic Engineering 86, no. 4-6 (April 2009): 1074–77. http://dx.doi.org/10.1016/j.mee.2009.02.007.

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Motamedi, M. Edward. "Development of micro-electro-mechanical optical scanner." Optical Engineering 36, no. 5 (May 1, 1997): 1346. http://dx.doi.org/10.1117/1.601357.

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Ardito, Raffaele, Claudia Comi, Alberto Corigliano, and Attilio Frangi. "Solid damping in micro electro mechanical systems." Meccanica 43, no. 4 (January 10, 2008): 419–28. http://dx.doi.org/10.1007/s11012-007-9105-3.

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Ardito, Raffaele, Claudia Comi, Alberto Corigliano, and Attilio Frangi. "Solid damping in micro electro mechanical systems." Meccanica 43, no. 5 (May 23, 2008): 557. http://dx.doi.org/10.1007/s11012-008-9137-3.

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Arefi, Mohammad. "Electro-mechanical vibration characteristics of piezoelectric nano shells." Thin-Walled Structures 155 (October 2020): 106912. http://dx.doi.org/10.1016/j.tws.2020.106912.

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Journal articles on the topic 'Electro-mechanical engineering'

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