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Journal articles on the topic 'Prototype Magnetic Compass'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Osorio C., Román, José A. Romero, Mario Peña C., and Ismael López-Juárez. "Inteligent Line Follower Mini-Robot System." International Journal of Computers Communications & Control 1, no. 2 (2006): 73. http://dx.doi.org/10.15837/ijccc.2006.2.2287.

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This paper shows a prototype development of an intelligent line follower mini-robot system, the objective is to recognize, understand and modify the actual performance of the movements of the robot during its pathway by way of getting information in real time from different magnetic sensors implemented in the system and based in a V2X digital compass, microcontroller and odometric measurements. The paper shows as well, the system characterization of the V2X sensor (digital compas) and the cost-benefit of the prototype implementation and performance. The programming techniques and easy operatio

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2

Kasatkin, S. I., P. A. Polyakov, O. P. Polyakov, et al. "Prototype of a Magnetic Locator Based on a Magnetoresistive Compass." Bulletin of the Russian Academy of Sciences: Physics 84, no. 2 (2020): 163–65. http://dx.doi.org/10.3103/s1062873820020148.

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3

Zhi, Menghui, Liang Tang, and Donghai Qiao. "Design and analysis of miniature tri-axial fluxgate magnetometer." Modern Physics Letters B 31, no. 05 (2017): 1750040. http://dx.doi.org/10.1142/s0217984917500403.

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The detection technology of weak magnetic field is widely used in Earth resource survey and geomagnetic navigation. Useful magnetic field information can be obtained by processing and analyzing the measurement data from magnetic sensors. A miniature tri-axial fluxgate magnetometer is proposed in this paper. This miniature tri-axial fluxgate magnetometer with ring-core structure has a dynamic range of the Earth’s field ±[Formula: see text]65,000 nT, resolution of several nT. It has three independent parts placed in three perpendicular planes for measuring three orthogonal magnetic field compone

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Oliveira, J., A. Torres, A. J. N. Batista, et al. "Digitizer hardware for magnetic data acquisition on COMPASS-U." EPJ Web of Conferences 288 (2023): 03005. http://dx.doi.org/10.1051/epjconf/202328803005.

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This paper presents the design and development of a modular digitizer prototype tailored for magnetic sensor data acquisition within the COMPASS-U tokamak facility, an upcoming experiment in Prague that will operate under conditions relevant to future experiments like ITER and DEMO. The magnetic diagnostic data serves a dual role, both for scientific analysis and real-time control. Due to the latter, the data integrity and fidelity is paramount for the plasma performance and overall safety of the fusion experiment. The digitizer prototype showcases a contemporary adaptation of prior board desi

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Xu, Xiaosu, Peijuan Li, and Jian-juan Liu. "A Fault-Tolerant Filtering Algorithm for SINS/DVL/MCP Integrated Navigation System." Mathematical Problems in Engineering 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/581909.

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The Kalman filter (KF), which recursively generates a relatively optimal estimate of underlying system state based upon a series of observed measurements, has been widely used in integrated navigation system. Due to its dependence on the accuracy of system model and reliability of observation data, the precision of KF will degrade or even diverge, when using inaccurate model or trustless data set. In this paper, a fault-tolerant adaptive Kalman filter (FTAKF) algorithm for the integrated navigation system composed of a strapdown inertial navigation system (SINS), a Doppler velocity log (DVL),

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Филатов, В. И., and В. В. Астреин. "Analysis of appliance inertial and magnetic compass systems for ship-drone automatic control through program track." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg> 1, no. 3(65) (2024): 330–38. http://dx.doi.org/10.37220/mit.2024.65.3.058.

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В статье приводятся результаты натурных испытаний прототипа судна-робота надводного базирования РТК-07V. Данный аппарат представляет из себя робототехнический комплекс, предназначенный для плавания по заданной программной траектории. Основной целью транспортных роботов является перевозка различных грузов, что является актуальным направлением отечественного вектора технического развития. Такой класс робототехнических комплексов находит широкое применение в разных областях и промышленных отраслях. Робот решает несколько задач, среди которых: следование объекта управления согласно заданной програ

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Maier, S., T. Gostner, F. van de Camp, and A. H. Hoppe. "OUTDOOR AR-APPLICATION FOR THE DIGITAL MAP TABLE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIV-3/W1-2020 (November 18, 2020): 93–98. http://dx.doi.org/10.5194/isprs-archives-xliv-3-w1-2020-93-2020.

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Abstract. In many fields today, it is necessary that a team has to do operational planning for a precise geographical location. Examples for this are staff work, the preparation of surveillance tasks at major events or state visits and sensor deployment planning for military and civil reconnaissance. For these purposes, Fraunhofer IOSB is developing the Digital Map Table (DigLT). When making important decisions, it is often helpful or even necessary to assess a situation on site. An augmented reality (AR) solution could be useful for this assessment. For the visualization of markers at specifi

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Gonçalves, Bruno, Paulo Varela, António Silva, et al. "Advances, Challenges, and Future Perspectives of Microwave Reflectometry for Plasma Position and Shape Control on Future Nuclear Fusion Devices." Sensors 23, no. 8 (2023): 3926. http://dx.doi.org/10.3390/s23083926.

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Providing energy from fusion and finding ways to scale up the fusion process to commercial proportions in an efficient, economical, and environmentally benign way is one of the grand challenges for engineering. Controlling the burning plasma in real-time is one of the critical issues that need to be addressed. Plasma Position Reflectometry (PPR) is expected to have an important role in next-generation fusion machines, such as DEMO, as a diagnostic to monitor the position and shape of the plasma continuously, complementing magnetic diagnostics. The reflectometry diagnostic uses radar science me

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Smerdov, R. S., Yu M. Spivak, V. A. Moshnikov, and A. S. Mustafaev. "Magnetic and Plasmonic Composite Nanostructures for Creating Optical Filters at Substance and Material Diagnostics Systems." Journal of the Russian Universities. Radioelectronics 24, no. 3 (2021): 81–97. http://dx.doi.org/10.32603/1993-8985-2021-24-3-81-97.

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Introduction. Porous silicon (PS) and materials on its basis are of interest for application in nanoelectronics, targeted drug delivery and advanced gas sensors. In addition, PS-based nanostructures are promising as filters in fibre-optic communication systems, since conventional thin-film deposition filters possess sidebands in their operating range thus requiring high vacuum for nanometer-thick coatings.Aim. To develop optical band-stop filter prototypes based on composite magnetic nanoparticles and the effect of localized surface plasmon resonance (LSPR) in an array of silver nanoparticles

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Potet, A., R. Belkhou, P. Berteaud, et al. "A bi-periodic undulator for SOLEIL II: concept and prototype." Journal of Physics: Conference Series 3010, no. 1 (2025): 012024. https://doi.org/10.1088/1742-6596/3010/1/012024.

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Abstract The recent improvements in the field of synchrotron light sources push the limits of brightness and pave the way for new scientific research. The upgrade of Synchrotron SOLEIL, called SOLEIL II, aims at optimizing photon production by reducing the natural horizontal emittance of the electron beam to less than 100 pm.rad, compared to 3.9 nm.rad presently. However, the new lattice [1] imposes a 30% reduction in the space reserved for some insertion devices. SOLEIL is presently looking for technical solutions such as compact radiation sources to take into account this space constraint. A

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Rudant, L., C. Delaveaud, and P. Ciais. "Compact Multiantenna." International Journal of Antennas and Propagation 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/748070.

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Planar inverted-f antenna (PIFA) and notch antenna are combined within a compact 2-port MIMO antenna. Electrical and magnetic duality of the two antennas avoids a critical coupling and best performances can be expected for multiple-input multiple-output (MIMO) communication. When excitation of notch antenna is optimized properly, the notch length can be short enough so that the two antennas can be colocated in a single compact volume. This compact multiantenna design is suitable for integration in MIMO handheld terminals. A prototype for broadband network application in 3.4–3.8’GHz frequency b

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Liu, C. S., B. J. Tsai, and Y. H. Chang. "A Compact Low-Cost Camera Module with Modified Magnetic Restoring Force." Journal of Mechanics 33, no. 4 (2017): 475–82. http://dx.doi.org/10.1017/jmech.2016.121.

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AbstractIn recent years, compact camera modules (CCMs) have been widely used in consumer electrical and electronic products. CCMs with low cost specially are necessary for portable devices. Therefore, the present group recently developed a miniaturized open-loop controlled camera module with low cost for cellphone applications, in which the Lorentz force is balanced by a magnetic restoring force. To enhance the performance of the camera module, this article reports a pattern structure to modify the linearity of the magnetic restoring force. We fabricated a CCM prototype with the dimensions of

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Torres, Andre, Karel Kovarik, Tomas Markovic, et al. "Test bench for calibration of magnetic field sensor prototypes for COMPASS-U tokamak." Fusion Engineering and Design 168 (July 2021): 112467. http://dx.doi.org/10.1016/j.fusengdes.2021.112467.

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14

Garcia, Jorge, Sarah Saeed, Emre Gurpinar, and Alberto Castellazzi. "A Study of Integrated Signal and Power Transfer for Compact Isolated SiC MOSFET Gate-Drivers." Electronics 10, no. 2 (2021): 159. http://dx.doi.org/10.3390/electronics10020159.

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This work discusses a novel set of alternate implementations of isolated gate driver circuits for power electronic transistors. The proposed topologies for the driver have been designed specifically for SiC power MOSFET. Three different solutions are discussed, all of them providing the required gate turn-on and turn-off command signal with galvanic isolation, but also supplying power to the secondary side of the driver by means of magnetic transformers. The resulting solutions, all of them implemented with simple circuitry, enable the integration of the driver into the power cell, allowing fo

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de Cos, M. E., and F. Las-Heras. "Dual-Band Antenna/AMC Combination for RFID." International Journal of Antennas and Propagation 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/804536.

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A novel antenna/Artificial Magnetic Conductor (AMC) combination usable in dual-band Radio Frequency Identification (RFID) tags over metallic objects is presented. A compact and low thickness prototype is manufactured and characterized in terms of return loss and radiation properties in an anechoic chamber both alone and on a metallic plate. The performance exhibited by the presented antenna/AMC prototype is proper for RFID tags on both metallic and nonmetallic objects.

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Zhu, Caoxiang, Kenneth Hammond, Adam Rutkowski, et al. "PM4Stell: A prototype permanent magnet stellarator structure." Physics of Plasmas 29, no. 11 (2022): 112501. http://dx.doi.org/10.1063/5.0102754.

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Permanent magnets provide a possible solution to simplify complicated stellarator coils. A prototype permanent magnet stellarator structure, PM4Stell, has been funded to demonstrate the technical feasibility of using permanent magnets to create the shaping field of a stellarator. Permanent magnets in uniform cubes with three polarization directions will be carefully placed to generate the required magnetic field for a National Compact Stellarator eXperiment-like equilibrium together with planar toroidal field coils. Discrete magnets will be glued together and inserted into a “post-office-box-l

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17

Musardo, M., T. Tanabe, J. Rank, et al. "Development of a Superconducting Adaptive Gap Undulator Prototype for NSLS-II." Journal of Physics: Conference Series 3010, no. 1 (2025): 012003. https://doi.org/10.1088/1742-6596/3010/1/012003.

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Abstract The photon flux and brightness of synchrotron radiation, crucial parameters for any light source, vary significantly depending on the type of source employed. Among the 23 Insertion Device (ID) sources at the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Lab (BNL), the 12-year-old 3m-long In-Vacuum Undulator (IVU20) stands out for its superior performance, although it no longer represents the cutting edge of technology. Recently, there has been a shift in focus towards developing next-generation sources, particularly Superconducting Undulators (SCUs), character

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18

Farooq, Umer, Adnan Iftikhar, Muhammad Farhan Shafique, et al. "C-Band and X-Band Switchable Frequency-Selective Surface." Electronics 10, no. 4 (2021): 476. http://dx.doi.org/10.3390/electronics10040476.

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This paper presents a highly compact frequency-selective surface (FSS) that has the potential to switch between the X-band (8 GHz–12 GHz) and C-band (4 GHz–8 GHz) for RF shielding applications. The proposed FSS is composed of a square conducting loop with inward-extended arms loaded with curved extensions. The symmetric geometry allows the RF shield to perform equally for transverse electric (TE), transverse magnetic (TM), and 45° polarizations. The unit cell has a dimension of 0.176 λ0 and has excellent angular stability up to 60°. The resonance mechanism was investigated using equivalent cir

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19

Chen, Haitao, Michael D. Kaminski, Patricia C. Stepp, Steven Holtzman, and Axel J. Rosengart. "Characterization of a Prototype Compact High Gradient Magnetic Separator Device for Blood Detoxification." Separation Science and Technology 44, no. 9 (2009): 1954–69. http://dx.doi.org/10.1080/01496390902880172.

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Hosseinzadehtaher, Mohsen, Silvanus D’silva, Matthew Baker, et al. "On Design Challenges of Portable Nuclear Magnetic Resonance System." Journal of Nuclear Engineering 4, no. 2 (2023): 323–37. http://dx.doi.org/10.3390/jne4020025.

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This article studies the optimal design approach for a portable nuclear magnetic resonance (NMR) system for use in non-destructive flow measurement applications. The mechanical and electromagnetic design procedures were carried out using the Ansys Maxwell finite-element analysis (FEA) software tool. The proposed procedure considered homogeneity and strength constraints while ensuring the desired functionality of the intended device for a given application. A modified particle swarm optimization (MPSO) algorithm was proposed as a reference design framework for optimization stages. The optimally

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Demina, Anna Andreevna, A. V. Safonov, O. A. Kovalchuk, E. R. Zapretilina, I. Yu Rodin, and E. N. Andreev. "DEVELOPMENT AND TESTING PROTOTYPE OF HTS MODULE FOR THE SYSTEM OF MAGNETIC LEVITATION OF VEHICLE." Transportation systems and technology 1, no. 1 (2015): 37–48. http://dx.doi.org/10.17816/transsyst20151137-48.

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In recent years increasingly discusses the prospects of application of high-temperature superconductors (HTS) as the winding current-carrying elements of magnetic systems for various purposes. It seems particularly attractive possibility of such systems at liquid nitrogen temperature. The article describes the prototype of module of the magnetic system which is made on the basis of high-temperature superconducting tapes, designed for the installation and testing on a working model of a static levitation. In the working model levitation of the platform carried by the interaction of the magnetic

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Tanimoto, Satoshi, Ayane Hara, Mari Yamashita, et al. "Extremely Compact Half-Bridge SiC Power Modules Built into EV In-Wheel Motor." Materials Science Forum 924 (June 2018): 849–53. http://dx.doi.org/10.4028/www.scientific.net/msf.924.849.

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Full SiC half-bridge power modules (HPMs) applicable to a real electric vehicle 40-kW permanent magnetic in-wheel motor with an internal diameter of 159 mm have been designed, prototyped and characterized for the first time in the NEDO-SIP program. The prototyped HPMs are extremely compact in size at D35.7×W18.8×H8.0 mm and capable of withstanding junction temperatures up to nearly 200°C. Double-pulse tests revealed that the tested HPM showed steady switching behavior even at 600 V/160 A.

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23

Xu, Zhenfa, Fanyu Kong, Kun Zhang, Han Zhu, Jiaqiong Wang, and Ning Qiu. "Optimization of the impeller for hydraulic performance improvement of a high-speed magnetic drive pump." Advances in Mechanical Engineering 14, no. 6 (2022): 168781322211045. http://dx.doi.org/10.1177/16878132221104576.

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Magnetic drive centrifugal pumps have compact structure and lower efficiency than ordinary centrifugal pumps. The surrogate-based optimization technique was applied to improve the performance of a high-speed magnetic drive pump with the help of numerical simulations. Eight geometrical parameters of the impeller were considered as the design variable. About 290 samples of impeller were generated by optimal Latin hypercube sampling (OLHS) method, and the corresponding efficiencies of all the impeller samplings were obtained from numerical simulation. The performance test of the prototype pump wa

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Xu, Zhenfa, Fanyu Kong, Kun Zhang, Han Zhu, Jiaqiong Wang, and Ning Qiu. "Optimization of the impeller for hydraulic performance improvement of a high-speed magnetic drive pump." Advances in Mechanical Engineering 14, no. 6 (2022): 168781322211045. http://dx.doi.org/10.1177/16878132221104576.

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Magnetic drive centrifugal pumps have compact structure and lower efficiency than ordinary centrifugal pumps. The surrogate-based optimization technique was applied to improve the performance of a high-speed magnetic drive pump with the help of numerical simulations. Eight geometrical parameters of the impeller were considered as the design variable. About 290 samples of impeller were generated by optimal Latin hypercube sampling (OLHS) method, and the corresponding efficiencies of all the impeller samplings were obtained from numerical simulation. The performance test of the prototype pump wa

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Filippov, Dmitry Maksimovic. "Peculiarities of simulation of magnetic field in electromechanical nodes of magnetic-levitation transport system by the method of secondary sources." Transportation systems and technology 1, no. 2 (2015): 49–61. http://dx.doi.org/10.17816/transsyst20151249-61.

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In recent years increasingly discusses the prospects of application of high-temperature superconductors (HTS) as the winding current-carrying elements of magnetic systems for various purposes. It seems particularly attractive possibility of such systems at liquid nitrogen temperature. The article describes the prototype of module of the magnetic system which is made on the basis of high-temperature superconducting tapes, designed for the installation and testing on a working model of a static levitation. In the working model levitation of the platform carried by the interaction of the magnetic

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26

Osa, Masahiro, Toru Masuzawa, Ryoga Orihara, and Eisuke Tatsumi. "Performance Enhancement of a Magnetic System in a Ultra Compact 5-DOF-Controlled Self-Bearing Motor for a Rotary Pediatric Ventricular-Assist Device to Diminish Energy Input." Actuators 8, no. 2 (2019): 31. http://dx.doi.org/10.3390/act8020031.

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Research interests of compact magnetically levitated motors have been strongly increased in development of durable and biocompatible mechanical circulatory support (MCS) devices for pediatric heart disease patients. In this study, an ultra-compact axial gap type self-bearing motor with 5-degrees of freedom (DOF) active control for use in pediatric MCS devices has been developed. The motor consists of two identical motor stators and a centrifugal levitated rotor. This paper investigated a design improvement of the magnetic circuit for the self-bearing motor undergoing development in order to di

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Sun, Yu Xin, Ling Ding, Tao Shi, and Xian Xing Liu. "Finite Element Analysis and Dynamics Charateristic Study for High-Speed Magnetic Suspension Motorized Spindle of CNC Machine Tools." Advanced Materials Research 317-319 (August 2011): 595–99. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.595.

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According to magnetic suspension motorized spindle system, high speed motorized spindle system based on bearingless induction motor is presented in this paper. The prototype of high speed motorized spindle system with bearingless induction motor is studied and analyzed by using finite element analysis software Ansoft/Maxwell and Riccati transfer matrix method, and compared with high speed motorized spindle system supported by Active Magnetic Bearing (AMB). The results show that high speed motorized spindle system with bearingless induction motor has distinct advantage of simple and compact str

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Li, Biyu, Hu Wang, Fenglin Cai, Wei Xie, and Yang Zeng. "Research on the Magnetic Integration of Inductors for High-Power DC Transformers—A Case Study on Electric Roadways." Energies 18, no. 7 (2025): 1859. https://doi.org/10.3390/en18071859.

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With the growth of renewable energy, electrified highways can efficiently utilize green energy such as solar and wind for EVs, promoting sustainable transportation and carbon reduction, and accelerating the transition to a greener future. For high-power DC/DC converters in electrified roadways, a lightweight and compact design is crucial, but inductors limit progress. Therefore, this study focuses on the magnetic integration of DC/DC chopping inductors. It first selected and optimized the decoupled magnetic integration form, initial electromagnetic parameters, and core sizes based on circuit t

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García Patiño, Astrid, Mahta Khoshnam, and Carlo Menon. "Wearable Device to Monitor Back Movements Using an Inductive Textile Sensor." Sensors 20, no. 3 (2020): 905. http://dx.doi.org/10.3390/s20030905.

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Low back pain (LBP) is the most common work-related musculoskeletal disorder among healthcare workers and is directly related to long hours of working in twisted/bent postures or with awkward trunk movements. It has already been established that providing relevant feedback helps individuals to maintain better body posture during the activities of daily living. With the goal of preventing LBP through objective monitoring of back posture, this paper proposes a wireless, comfortable, and compact textile-based wearable platform to track trunk movements when the user bends forward. The smart garmen

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Buldashev, S. A., R. V. Emlin, P. A. Morozov, I. F. Punanov, Ye N. Shcherbakov, and L. Yu Yashnov. "Thrust characteristics of compact high-voltage pulsed plasma thruster utilizing liquid propellant." Journal of Physics: Conference Series 2064, no. 1 (2021): 012114. http://dx.doi.org/10.1088/1742-6596/2064/1/012114.

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Abstract In this work, we present the results on thrust performance of 0.5 kg sub-joule pulsed plasma thruster prototype based on a high-voltage transformer with magnetic storage capable of work at frequency of 400 Hz. The discharge unit is made of ferroelectric ceramics with an option for utilizing liquid propellant. In case of vacuum oil as a propellant, we obtained values of thrust of ~ 80 nN·s per discharge and 33 μN·s for 400 pulses in 1 second.

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31

Pelino, Mario, Carlo Cantalini, and Marco Faccio. "Principles and Applications of Ceramic Humidity Sensors." Active and Passive Electronic Components 16, no. 2 (1994): 69–87. http://dx.doi.org/10.1155/1994/91016.

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This paper presents a brief review of the state of the art in humidity and gas ceramic sensors R&D; it also describes the principle, fabrication and application of the humidity-sensitive Si-doped a-hematite (α-Fe2O3) sintered compacts. The humidity signal response is characterized by volt-amperometric and impedance spectroscopy techniques in the 0-97% relative humidity (RH) range. The response time of the sensor is evaluated by 0-60% RH variations. Experimental techniques used to measure the hysteresis, drift, and aging of the humidity setasor are presented and the results are discussed. T

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Huang, Longxiang, and Feng Lyu. "Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation." Journal of Marine Science and Engineering 8, no. 6 (2020): 410. http://dx.doi.org/10.3390/jmse8060410.

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A compact low-velocity ocean current energy harvester (LOCH) is developed to power undersea instrument platforms for long-term scientific seafloor observation. Noncontact magnetic couplings are used in the LOCH to eliminate friction and achieve reliable underwater sealing so that the LOCH can adapt the low-velocity ocean current and its energy transmission efficiency can be improved. The parameters of the magnetic couplings are optimized by the three-dimensional finite-element method (3D FEM). A laboratory experiment platform is designed; and the static and dynamic performances of the magnetic

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Gao, Wei, Katsutoshi Horie, Songyi Dian, Kei Katakura, and Satoshi Kiyono. "Improvement in a Surface Motor-Driven Planar Motion Stage." Journal of Robotics and Mechatronics 18, no. 6 (2006): 808–15. http://dx.doi.org/10.20965/jrm.2006.p0808.

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We report a surface motor-driven planar motion stage with an XYθZsurface encoder. The surface motor consists of two pairs of linear motors. Magnetic arrays are installed on the platen and stator windings of linear motors on the stage base. The platen is moved in the X and Y directions by X and Y linear motors. It is rotated around the Z axis by moment generated by the X or Y linear motors. The surface encoder consists of two two-dimensional (2D) angle sensors and an angle grid with 2D sinusoidal surface waves. The angle grid is installed on the platen. Sensors onside make the stage compact. Th

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Richter, Sebastian C., A. Ballarino, D. Schoerling, T. H. Nes, A. Bernhard, and A. S. Muller. "Progress on HTS Undulator Prototype Coils for Compact FEL Designs." IEEE Transactions on Applied Superconductivity 32, no. 4 (2022): 1–5. http://dx.doi.org/10.1109/tasc.2022.3150288.

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Chauvière, Simon, Lamia Belguerras, Thierry Lubin, Smail Mezani, Sébastien Leclerc, and Laoues Guendouz. "Magnetic Resonance Imaging-Compatible Electromagnetic Actuator: Design and Tests." Energies 17, no. 13 (2024): 3254. http://dx.doi.org/10.3390/en17133254.

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This paper presents the detailed design, construction and tests of a protype iron-free MRI-compatible electromagnetic actuator. The originality of this proposal lies in the use of the homogeneous static magnetic field B0, present in the MRI bore, to ensure the electromechanical energy conversion. The armature is composed of three rectangular coils in a three-phase arrangement, which makes the actuator very light-weight and compact. The operating principle is that of an AC synchronous motor with a rotating armature. In order to design the actuator, a 3D analytical electromagnetic model is devel

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Lee, Eun S., and Byeong Guk Choi. "Calculation Methodologies of Complex Permeability for Various Magnetic Materials." Electronics 10, no. 17 (2021): 2167. http://dx.doi.org/10.3390/electronics10172167.

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In order to design power converters and wireless power systems using high-frequency magnetic materials, the magnetic characteristics for the inductors and transformers should be specified in detail w.r.t. the operating frequency. For investigating the complex permeability of the magnetic materials by simply test prototypes, the inductor model-based calculation methodologies for the complex permeability are suggested to find the core loss characteristics in this paper. Based on the measured results of the test voltage Ve, current Ie, and phase difference θe, which can be obtained simply by an o

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N’gotta, P., P. Vagin, and M. Tischer. "Permanent Magnet phase shifters for FLASH2020+ FEL." Journal of Physics: Conference Series 2380, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1742-6596/2380/1/012007.

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Abstract The development of a simple and compact permanent magnet (PM) phase shifter is presented in this paper. The design is based on four PM blocks per girder (8 PM blocks in total), and uses only one type PM block with horizontal magnetization and 15mm length. The magnetic field provides a net zero and second field integral and a phase integral of 2 · 10–6 T 2 m 3 for 60mm overall magnet length. The study of the numerical model with Radia shows that this design is mainly sensitive to angular magnetization errors. The correction strategy is based on pairing the PM blocks in order to cancel

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Zhou, Wei, Chee-Meng Chew, and Geok-Soon Hong. "Development of a compact double-disk magneto-rheological fluid brake." Robotica 25, no. 4 (2007): 493–500. http://dx.doi.org/10.1017/s0263574707003372.

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SUMMARYThis paper describes the development of a novel compact magneto-rheological (MR) fluid brake with high transmitted torque and a simple structure. The MR fluid brake has two shearing disks with an electromagnetic coil located between them. Such a structure enables the brake to have a small radial dimension and a large torque transmission capacity. In the design process, a Bingham viscoplastic model is used to predict the transmitted torque. Electromagnetic finite element analysis (FEA) is performed to assist the magnetic circuit design and structural parameters' optimization. The novel b

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Jia, Shuhai, Jun Peng, Jiaming Bian, Shuo Zhang, Shunjian Xu, and Bao Zhang. "Design and Fabrication of a MEMS Electromagnetic Swing-Type Actuator for Optical Switch." Micromachines 12, no. 2 (2021): 221. http://dx.doi.org/10.3390/mi12020221.

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A microelectromechanical systems system (MEMS) electromagnetic swing-type actuator is proposed for an optical fiber switch in this paper. The actuator has a compact size of 5.1 × 5.1 × 5.3 mm3, consisting of two stators, a swing disc (rotator), a rotating shaft, and protective covers. Multi-winding stators and a multipole rotator were adopted to increase the output torque of the actuator. The actuator’s working principle and magnetic circuit were analyzed. The calculation results show that the actuator’s output torque is decisive to the air gap’s magnetic flux density between the stators and t

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Qu, Lili, Yonghong Zhang, Qun Li, and Yong Fan. "Compact UWB BPF with a notched band using a single perturbed HMSIW cavity." International Journal of Microwave and Wireless Technologies 12, no. 8 (2020): 809–14. http://dx.doi.org/10.1017/s1759078720000252.

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AbstractThis paper presents a notched band ultra-wideband bandpass filter using a single perturbed quint-mode half-mode substrate-integrated waveguide cavity. The cavity is perturbed by loading four stubs at two corners of the magnetic walls of the single cavity. The variable parameters of stubs are selected to move down the first five resonant modes to the predetermined passband during the design process. Meanwhile, microstrip lines with a transition structure located on two loaded stubs are employed to feed the resonator. Moreover, the filter also firstly designs a notched band by introducin

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Wan, Cai, Wei He, Pan Guo, Jiamin Wu, Yucheng He, and Zheng Xu. "A compact magnetic resonance system with inside-out sensor for soil moisture measurement." Measurement Science and Technology 33, no. 7 (2022): 075902. http://dx.doi.org/10.1088/1361-6501/ac6000.

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Abstract Accurate measurement of soil moisture parameters plays a vital role in promoting agricultural production. Nuclear magnetic resonance (NMR) measuring instruments have become increasingly compact, especially in low field applications. However, NMR soil moisture measurement instruments still have problems with portability. We report on a compact NMR measuring instrument that focuses on the circuit’s design and construction. The instrument includes an inside-out sensor, NMR spectrometer, radio frequency power amplifier, low-noise preamplifier, and duplexer. They are integrated into a slim

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Qian, Zhong-Yu, Wen-Jian Sun, Xue-Feng Zhang, and Jian-Xin Chen. "An X-band magnetic dipole quasi-Yagi antenna based on a dielectric resonator." International Journal of Microwave and Wireless Technologies 12, no. 3 (2019): 240–45. http://dx.doi.org/10.1017/s1759078719001223.

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AbstractA magnetic dipole quasi-Yagi antenna based on a dielectric resonator (DR) is proposed in this letter. The dominate TE1δ1 mode of the rectangular DR is used as a magnetic dipole which can be differentially fed by the coplanar strip line (CPS). Thanks to the DR employment, the proposed antenna has several advantages such as compact size and flexible design which means the 3-D dimensions of the DR can be easily adjusted to cater for various applications. Meanwhile, the gain of the proposed DR quasi-Yagi antenna is higher than that of traditional electric dipole counterparts. Furthermore,

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Zhou, Zhenhua, Shuhan Chen, Dun Xia, Jianjun He, and Peng Zhang. "The design of negative stiffness spring for precision vibration isolation using axially magnetized permanent magnet rings." Journal of Vibration and Control 25, no. 19-20 (2019): 2667–77. http://dx.doi.org/10.1177/1077546319866035.

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A negative stiffness element is always employed to generate high-static–low-dynamic stiffness characteristic of the vibration isolator, reduce the resonance frequency of the isolator, and improve the vibration isolation performance under low and ultra-low frequency excitation. In this paper, a new compact negative stiffness permanent magnetic spring (NSPMS) that is composed of two axial-magnetized permanent magnetic rings is proposed. An analytical expression of magnetic negative stiffness of the NSPMS is deduced by using the Coulombian model. After analyzing the effect of air-gap width, air-g

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Huang, Ding-jian, Li-gang Yao, Wen-jian Li, and Jun Zhang. "Design and realization of a novel magnetic nutation drive for industry robotic wrist reducer." Industrial Robot: An International Journal 44, no. 1 (2017): 58–63. http://dx.doi.org/10.1108/ir-04-2016-0130.

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Purpose The purpose of this research is to achieve a novel magnetic nutation drive for an industry robotic wrist reducer. Design/methodology/approach A novel magnetic nutation drive is proposed, and the structure and principle of the designed magnetic nutation drive are described in this study. Three-dimensional finite element analysis is used to compute the magnetic and torque of the magnetic nutation drive. Furthermore, a prototype of this novel magnetic nutation drive device is developed with 3D printing technology and tested to verify the feasibility of the proposed structure and principle

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Jiang, Rilang, Xiaoting Rui, Guoping Wang, Fufeng Yang, Wei Zhu, and Min Wei. "Design and modeling of an innovative magnetorheological fluid-elastomeric damper with compact structure." Journal of Intelligent Material Systems and Structures 31, no. 18 (2020): 2088–100. http://dx.doi.org/10.1177/1045389x20942898.

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The aim of the present work is to propose an innovative magnetorheological fluid-elastomeric damper which is applied to small amplitude vibration reduction occasions, especially for helicopter rotor. The damper is compact in structure and possesses the controllable dynamic characteristics. The magnetic circuit structure of the damper is designed and optimized emphatically in order to ensure its rationality. After the completion of the prototype, the damper is tested by a hydraulically actuated dynamic testing system under different excitation amplitudes, excitation frequencies, and input curre

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Kikuchi, Takehito, Asaka Ikeda, Rino Matsushita, and Isao Abe. "Development of Second Prototype of Twin-Driven Magnetorheological Fluid Actuator for Haptic Device." Micromachines 15, no. 10 (2024): 1184. http://dx.doi.org/10.3390/mi15101184.

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Magnetorheological fluids (MRFs) are functional fluids that exhibit rapid and reproducible rheological responses to external magnetic fields. An MRF has been utilized to develop a haptic device with precise haptic feedback for teleoperative surgical systems. To achieve this, we developed several types of compact MRF clutches for haptics (H-MRCs) and integrated them into a twin-driven MRF actuator (TD-MRA). The first TD-MRA prototype was successfully used to generate fine haptic feedback for operators. However, undesirable torque ripples were observed due to shaft misalignment and the low rigid

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Trakarnchaiyo, Chanuphon, Yang Wang, and Mir Behrad Khamesee. "Design of a Compact Planar Magnetic Levitation System with Wrench–Current Decoupling Enhancement." Applied Sciences 13, no. 4 (2023): 2370. http://dx.doi.org/10.3390/app13042370.

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Magnetic levitation technology has promising applications in modern manufacturing, especially for fine-motion stage and long-range omnidirectional planar motors. This paper presents the development of a compact planar maglev prototype with the potential to achieve both applications to increase flexibility for the manufacturing system. The planar stator is designed by using optimized square coils arranged in the zigzag configuration, which provides a better uniform magnetic flux density compared with another configuration. The stator is a compact and portable module with built-in current amplif

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Tobin, John J., Erin G. Cox, and Leslie W. Looney. "A 16 au Binary in the Class 0 Protostar L1157 MMS." Astrophysical Journal 928, no. 1 (2022): 61. http://dx.doi.org/10.3847/1538-4357/ac5594.

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Abstract We present Very Large Array observations toward the Class 0 protostar L1157 MMS at 6.8 and 9 mm with a resolution of ∼0.″04 (14 au). We detect two sources within L1157 MMS and interpret these sources as a binary protostar with a separation of ∼16 au. The material directly surrounding the binary system within the inner 50 au radius of the system has an estimated mass of 0.11 M ☉, calculated from the observed dust emission. We interpret the observed binary system in the context of previous observations of its flattened envelope structure, low rates of envelope rotation from 5000 to 200

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Leland, Eli S., Richard M. White, and Paul K. Wright. "Design and Fabrication of a MEMS AC Electric Current Sensor." Advances in Science and Technology 54 (September 2008): 350–55. http://dx.doi.org/10.4028/www.scientific.net/ast.54.350.

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The need for energy efficiency combined with advances in compact sensor network technologies present an opportunity for a new type of sensor to monitor electricity usage in residential and commercial environments. A novel design for a self-powered, proximity based AC electric current sensor has been developed. This sensor device is constructed of a piezoelectric cantilever with a permanent magnet mounted to the cantilever's free end. When the sensor is placed in proximity to a wire carrying AC electric current, the permanent magnet couples to the wire's alternating magnetic field, deflecting t

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Sun, Jianhai, Ning Xue, Wen Wang, et al. "Compact prototype GC-PID system integrated with micro PC and micro GC column." Journal of Micromechanics and Microengineering 29, no. 3 (2019): 035008. http://dx.doi.org/10.1088/1361-6439/aaf42c.

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