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Journal articles on the topic 'Rotary transformer'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Xie, Sheng Li, Jing Fang, Ying Jun Chang, and Bor Ning. "Research on a New Rotary Transformer Device." Applied Mechanics and Materials 602-605 (August 2014): 2627–31. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2627.

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Using the principle of electromagnetic induction, we designed the new rotary transformer device which secondary winding can rotate with the prime mover. The device not only achieves the purpose that provides synchronous generator with AC power of exciting side, but also can eliminate the impact of slip ring and carbon brushes fundamentally on the system. The test results of the prototype also show that the design of the rotary transformer described herein is possible.

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2

Wang, Xin Wei, Ai Min Wang, and Xiao Long Wang. "Modeling Analysis of Contactless Power Transfer System for Rotary Ultrasonic Machining." Applied Mechanics and Materials 829 (March 2016): 35–40. http://dx.doi.org/10.4028/www.scientific.net/amm.829.35.

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In rotary ultrasonic machining (RUM), the traditional power transfer method was achieved by slip ring that cannot cope with high-speed rotary of the tool, which limits the machine potential of RUM. Based on the principle of electromagnetic mutual inductance and the technology of loosely coupled inductively power transfer (LCIPT), a contactless power transfer system (rotary transformer) is built for RUM to achieve its power transfer goal. Resonant Compensation technology is used to enhance the efficiency of the rotary transformer. And the performance of the rotary transformer is validated on Maxwell platform.

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3

Brown, F. T., S. C. Tentarelli, and S. Ramachandran. "A Hydraulic Rotary Switched-Inertance Servo-Transformer." Journal of Dynamic Systems, Measurement, and Control 110, no. 2 (June 1, 1988): 144–50. http://dx.doi.org/10.1115/1.3152664.

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Switched-reactance hydraulics represents a radically novel approach to the control of fluid power, since the proportional metering of flow through adjustable orifices is eliminated, and the inertive properties of the fluid substituted. Potential advantages in bandwidth, linearity, and efficiency have been indicated. This paper presents the first steady-state theory and experiments with a rotary fluid switch, which accomplishes the needed pulse-width modulation at a desirably high frequency. Cavitation problems are observed, means of their partial solution are implemented, and means of a more complete solution are indicated.

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4

Gong, X. F., L. Zhang, and E. J. Feng. "Design of a new separable rotary transformer." IOP Conference Series: Materials Science and Engineering 242 (September 2017): 012056. http://dx.doi.org/10.1088/1757-899x/242/1/012056.

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5

Duan, Jiyue, Bin Lin, Qiang Yang, and Yujia Luan. "Design and testing of a novel rotary transformer for rotary ultrasonic machining." IEICE Electronics Express 14, no. 23 (2017): 20171033. http://dx.doi.org/10.1587/elex.14.20171033.

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6

Inoue, H., H. Fusayasu, and N. Takahashi. "Investigation of factors affecting crosstalk in a rotary transformer." IEEE Transactions on Magnetics 33, no. 2 (March 1997): 2215–18. http://dx.doi.org/10.1109/20.582775.

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7

Ruviaro, Maurício, Fredemar Rüncos, and Nelson Sadowski. "Wound rotor doubly fed induction machine with radial rotary transformer." Journal of Microwaves, Optoelectronics and Electromagnetic Applications 12, no. 2 (December 2013): 411–26. http://dx.doi.org/10.1590/s2179-10742013000200013.

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8

Stuart, T., R. King, and H. Shamseddin. "Rotary Transformer Design with Fixed Magnetizing and/or Leakage Inductances." IEEE Transactions on Aerospace and Electronic Systems AES-22, no. 5 (September 1986): 565–72. http://dx.doi.org/10.1109/taes.1986.310723.

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9

Liu, Liping, Bin Lin, and Xueming Zhu. "Optimization of rotary transformer for RUM with secondary self-compensation." AEU - International Journal of Electronics and Communications 83 (January 2018): 73–80. http://dx.doi.org/10.1016/j.aeue.2017.08.038.

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10

Zhu, Xueming, Bin Lin, and Liping Liu. "Efficiency‐based compensations and the mechanical load dependencies of rotary transformer for rotary ultrasonic machining applications." IET Power Electronics 8, no. 6 (June 2015): 986–93. http://dx.doi.org/10.1049/iet-pel.2014.0253.

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11

Li, Xiu Lei, and Yong Wu. "Gravitational Potential Energy Recovery and Recycle of Rotary Drilling Rig Kelly Bar." Applied Mechanics and Materials 635-637 (September 2014): 159–62. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.159.

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In order to improve the economic benefits of tunneling to rotary drilling rig ,in this paper ,the rotary drilling rig main winch hydraulic system was improved ,by increasing an hydro pneumatic accumulator storage and releasing gravitational potential energy of kelly bar ,as well as increasing reversing motor and the main winch motor to form a hydraulic transformer .So ensured the high pressure when the energy release and reduced the rotary drilling rig engine power ,what’s more ,this system’s feasibility had been verified by theoretical calculation .

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12

Stancu, Constantin, Terence Ward, Khwaja M. Rahman, Robert Dawsey, and Peter Savagian. "Separately Excited Synchronous Motor With Rotary Transformer for Hybrid Vehicle Application." IEEE Transactions on Industry Applications 54, no. 1 (January 2018): 223–32. http://dx.doi.org/10.1109/tia.2017.2757019.

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13

Inoue, H., and Y. Okada. "Finite element analysis of crosstalk in a rotary transformer for VCRs." IEEE Transactions on Magnetics 27, no. 5 (September 1991): 3931–34. http://dx.doi.org/10.1109/20.104963.

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14

TUDORACHE, Tiberiu, and Andrei Marinescu. "SYNCHRONOUS MACHINE FOR ELECTRIC VEHICLES EQUIPPED WITH FIELD WINDING SUPPLIED BY ROTARY TRANSFORMER." "ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)" 1, no. 1 (November 19, 2020): 1–13. http://dx.doi.org/10.36801/apme.2019.1.5.

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15

Raminosoa, Tsarafidy, Randy H. Wiles, and Jonathan Wilkins. "Novel Rotary Transformer Topology With Improved Power Transfer Capability for High-Speed Applications." IEEE Transactions on Industry Applications 56, no. 1 (January 2020): 277–86. http://dx.doi.org/10.1109/tia.2019.2955050.

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16

Zietsman, Nikita L., and Nkosinathi Gule. "Evaluation of a single-phase 50-Hz axial rotary transformer for DFIG systems." IEEJ Transactions on Electrical and Electronic Engineering 13, no. 2 (September 3, 2017): 311–21. http://dx.doi.org/10.1002/tee.22528.

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17

Monson, James E. "DESIGN OF A MULTI‐CHANNEL ROTARY TRANSFORMER FOR APPLICATION TO DIGITAL MAGNETIC RECORDING." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 14, no. 4 (April 1995): 133–36. http://dx.doi.org/10.1108/eb051929.

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18

Yokote, Shizuka, and Yoshihisa Hirane. "Trial Manufacture and Fundamental Characteristics of a Normal Conducting Model for Superconducting Rotary Transformer." IEEJ Transactions on Power and Energy 115, no. 11 (1995): 1291–96. http://dx.doi.org/10.1541/ieejpes1990.115.11_1291.

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19

Zhong, Hui, Lin Zhao, and Xiao Li. "Design and Analysis of a Three-Phase Rotary Transformer for Doubly Fed Induction Generators." IEEE Transactions on Industry Applications 51, no. 4 (July 2015): 2791–96. http://dx.doi.org/10.1109/tia.2015.2397178.

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20

Ruviaro, Maurício, Fredemar Runcos, Nelson Sadowski, and Iduan Machado Borges. "Analysis and Test Results of a Brushless Doubly Fed Induction Machine With Rotary Transformer." IEEE Transactions on Industrial Electronics 59, no. 6 (June 2012): 2670–77. http://dx.doi.org/10.1109/tie.2011.2165457.

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21

Tao, R. M., X. Tao, and C. R. Xiong. "Position and Speed Detection of Synchronous Motor Rotor." Applied Mechanics and Materials 236-237 (November 2012): 61–66. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.61.

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This article describes a method to detect the position and speed in a rotary transformer pole AC synchronous motor. This method gives the pole position and velocity signal demodulation circuit and analyses the demodulation principle. After practical testing, this approach is reliable with high detection accuracy. Therefore, it is fully able to meet the needs of CNC machine tools with high performance in AC server system.

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22

Zhao, Wei, and Jian Ruan. "Experimental Study of the Dynamic Properties of 2D Servo Valve with Different Pilot Structure." Applied Mechanics and Materials 687-691 (November 2014): 326–30. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.326.

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The mechanical part of the 2D servo valve is mainly a hydraulic servo screw mechanism, by which the rotary motion of the spool is turned to linear sliding. A step motor is utilized to rotate the spool and functions as the electrical-to-mechanical transformer. For studying the different influences of 2D valve's pilot circular and full arch structure on its dynamic characteristics of servo screw mechanism, a step response and sine response experiment device was designed, and the experiments were done. The experimental results show that the full arch structure type step response time is about 1.6 ms (abbreviation of millisecond), the circular type about 3ms, proved that the full bow structure can significantly improve the dynamic characteristic of servo screw mechanism, it is also be proved by sinusoidal frequency response experiments.

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23

Chenjun, Wu, Chen Shijin, Cheng Kai, and Ding Hui. "Property study of power transmission system for rotary ultrasonic application." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 2 (November 14, 2016): 305–15. http://dx.doi.org/10.1177/0954406216678875.

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Rotary ultrasonic applications are being widely used in machining hard and brittle materials. Conventional conducting ring used as power transmission part limits the ultrasonic applications from rotating at high speed. A high efficiency power transmission system is defined in this article to solve this problem. It consists of a contactless transformer, which was made up of two hollow copper coils, ultrasonic power supply and compensation capacitors. Four compensation methods are proposed and their properties are analyzed through simulations and experiments. The simulations show that S-S compensation is superior to others on the performance of transient and steady circuit parameters and the max transmit efficiency can reach about 97.2% when appropriate compensation method and capacitance are used. Rotary experiments show that speed has little effect on the property of the system.

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24

Shin, Young-Chul, and Ki-Chan Kim. "A Study on Multi-Physics Analysis of High-Resolution Winding Type Resolver and Rotary Transformer." Journal of the Korea Academia-Industrial cooperation Society 17, no. 5 (May 31, 2016): 146–52. http://dx.doi.org/10.5762/kais.2016.17.5.146.

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25

Trevisan, Riccardo, and Alessandra Costanzo. "A 1-kW Contactless Energy Transfer System Based on a Rotary Transformer for Sealing Rollers." IEEE Transactions on Industrial Electronics 61, no. 11 (November 2014): 6337–45. http://dx.doi.org/10.1109/tie.2014.2311395.

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26

Odawara, Yukio. "Application of the Core-type Rotary Transformer for Power Supply to a Rotating Detector without Contact." IEEJ Transactions on Industry Applications 121, no. 10 (2001): 1068–74. http://dx.doi.org/10.1541/ieejias.121.1068.

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27

Liao, Zhi Rong, Liang Zhou, D. Gao, X. L. Zhang, and M. L. Yin. "Research of Detection and Control System for Lunar Dust Effects Simulator." Advanced Materials Research 426 (January 2012): 126–30. http://dx.doi.org/10.4028/www.scientific.net/amr.426.126.

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To simluate the effects of lunar dust environment veritably by using lunar dust effects simulator, a detection and control system based on singlechip microcomputer was developed. In this system, peripheral circuits with stepper motor driver, temperature sensor and rotary transformer were used to collect the signals and control the temperature as well as speed. Stepper motor speed up/down curve, digital convolution filter and error compensation were adhibited for improving the system accuracy. The results showed that this method was simple, reliable and had high control accuracy.

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28

Fan, Li Ming, Yong Hong Hu, and Peng Wu. "Design and Implementation of Angular Sensor in Radio Positioning System." Advanced Materials Research 181-182 (January 2011): 965–73. http://dx.doi.org/10.4028/www.scientific.net/amr.181-182.965.

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According to the Index Requirements of Radiolocation in a small aircraft, a Digital high-precision angular sensor is designed. Based on the design idea of multi-stage rotary transformer as angular displacement of the collector, introduced the principle of angle sensor, give the detailed design of hardware, described data collection, data processing and coding methods. Through laboratory static testing and dynamic testing, the test results with the static and dynamic shows GPS azimuth fit data well. Error analysis shows that: In this paper, the angular sensor designed, precision target to meet the system requirements may be applied to other areas of the angular displacement measurement system.

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29

Li, Bao, and Guang Xu Zhou. "Research on Automatic Detection Method about Rotor Initial Position of Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 313-314 (March 2013): 31–36. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.31.

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ts required to real-time detect rotor position for vector control of permanent magnet synchronous motor, the difference is initial rotor position angle between the output position signal of absolute rotary transformer and the position signal for park transformation, then it is necessary to get the initial position of the motor before the motor starts. Based on the characteristics of permanent magnet synchronous motor, a certain method about automatic detection of the initial position of a rotor is obtained. Compared with other methods, there are advantages such as simple calculation, small impact by the external and high detection accuracy. At last, the correctness of the method is verified by theory and experiment.

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30

SHCHUR, Ihor. "Development and simulation of special rotary transformer - contactless power transmitter and control device for a counter-rotating wind turbine." PRZEGL�D ELEKTROTECHNICZNY 1, no. 2 (February 5, 2015): 241–44. http://dx.doi.org/10.15199/48.2015.02.55.

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31

Liu, Zong Liang, and Hui Bin Ao. "Sensorless Vector Control System Design of Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 302 (February 2013): 752–58. http://dx.doi.org/10.4028/www.scientific.net/amm.302.752.

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In order to achieve closed-loop control，it is generally required to know the position and speed of the motor rotor through installed photoelectric encoder, rotary transformer and some other mechanical sensors on the rotor shaft . But these sensors increase the system cost and the interface circuits between the motor and the control system, and reduce the control accuracy and reliability of the system.This article designs a sensorless vector control system for permanent magnet synchronous motor, and introduces the hardware structure and the working principle of the system, and designs control circuit and vector control software based on IRMCF341 chip. The result of test shows that the system has a steady state performance and a high control precision. The motor runs well without the position sensor and at the same time achieves a much higher level of control performance.

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32

Li, Yong, Hao Wu, Xing Xu, Xiaodong Sun, and Jindong Zhao. "Rotor Position Estimation Approaches for Sensorless Control of Permanent Magnet Traction Motor in Electric Vehicles: A Review." World Electric Vehicle Journal 12, no. 1 (January 10, 2021): 9. http://dx.doi.org/10.3390/wevj12010009.

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Permanent magnet traction motor has the advantages of high efficiency, high power density, high torque density and quick dynamic response, which has been widely used in the traction field of electric vehicle. The high-performance control of permanent magnet traction motor depends on accurate rotor position information, which is usually obtained by using mechanical position sensors such as hall sensor, encoder and rotary transformer. However, the traditional mechanical sensor has the disadvantages of high cost, large volume and poor anti-interference ability, which limits the application of permanent magnet motor. The sensorless control technology is an effective way to solve the above-mentioned problem. Firstly, the sensorless control techniques of permanent magnet motor are classified. The sensorless control techniques of permanent magnet motor for rotor initial position, zero-low speed range, medium-high speed range and full speed range are deeply described and compared. Finally, the development trend of sensorless control technology of permanent magnet traction motor is prospected.

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33

Li, Yong, Hao Wu, Xing Xu, Xiaodong Sun, and Jindong Zhao. "Rotor Position Estimation Approaches for Sensorless Control of Permanent Magnet Traction Motor in Electric Vehicles: A Review." World Electric Vehicle Journal 12, no. 1 (January 10, 2021): 9. http://dx.doi.org/10.3390/wevj12010009.

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Permanent magnet traction motor has the advantages of high efficiency, high power density, high torque density and quick dynamic response, which has been widely used in the traction field of electric vehicle. The high-performance control of permanent magnet traction motor depends on accurate rotor position information, which is usually obtained by using mechanical position sensors such as hall sensor, encoder and rotary transformer. However, the traditional mechanical sensor has the disadvantages of high cost, large volume and poor anti-interference ability, which limits the application of permanent magnet motor. The sensorless control technology is an effective way to solve the above-mentioned problem. Firstly, the sensorless control techniques of permanent magnet motor are classified. The sensorless control techniques of permanent magnet motor for rotor initial position, zero-low speed range, medium-high speed range and full speed range are deeply described and compared. Finally, the development trend of sensorless control technology of permanent magnet traction motor is prospected.

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34

Ji, Xiancheng, Yan Ren, and Hesheng Tang. "Analysis on vibration for a high-frequency electro-hydraulic cleaning system controlled by improved two-dimensional rotary valve." Advances in Mechanical Engineering 10, no. 12 (December 2018): 168781401881141. http://dx.doi.org/10.1177/1687814018811412.

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Conventional high-frequency cleaners utilize functional materials (e.g. piezoelectric ceramics, magnetostrictive materials) excited by electrical signals to realize high-frequency vibration, even ultrasonic vibration. However, it is difficult to produce a large force without sacrificing bandwidth because of the physical characteristics of materials themselves. Therefore, a high-frequency high-power cleaner driven by electro-hydraulic excitation is proposed. Only a few studies are performed on electro-hydraulic cleaners, owing to the limitation of frequency bandwidth of the electro-hydraulic system. Thus, a rotary valve named two-dimensional valve is improved and adopted to improve high-frequency performances of the electro-hydraulic cleaner. In this article, a two-dimensional rotary valve with a linear variable differential transformer is designed, and the vibration characteristics of the electro-hydraulic cleaner controlled by this valve are discussed in detail, especially vibration acceleration, vibration frequency, and pressure amplitude. A prototype of the electro-hydraulic cleaner is modeled and both a theoretical analysis and experimental investigation are carried out. Theoretical and experimental results indicate that the electro-hydraulic cleaning system outputs sinusoidal vibration waveforms, especially in a high-frequency domain, which could realize the vibration frequency of 2669 Hz. The measured waves at different frequencies (below the resonant frequency) demonstrate different distortions compared with the sinusoidal waveform. These distortions can be associated with the hydraulic resonance. At hydraulic resonance (1903 Hz), the amplitude is increased significantly and the vibration waveform becomes more pronounced. Nevertheless, the study does provide an access to the electro-hydraulic high-frequency vibration applied in cleaning or other engineering cases.

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35

Sinyukova, T. V., V. N. Meshcheryakov, and A. V. Sinyukov. "Research of control systems for lifting and transport mechanisms." Power engineering: research, equipment, technology 23, no. 3 (July 20, 2021): 47–61. http://dx.doi.org/10.30724/1998-9903-2021-23-3-47-61.

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THE PURPOSE. To investigate the existing methods of frequency control and their influence on the characteristics of the asynchronous motor, including the energy parameters. Consider new circuit solutions of the control type under study. Create a mathematical model of each of the methods of frequency control. To analyze the results obtained from the point of view of the behavior of mechanical, electromechanical and energy components. METHODS. When solving this problem, the method of computer simulation modeling, implemented by means of Matlab Simulink, was used. RESULTS. In this paper, various aspects of electric drive systems based on asynchronous motors with the use of cascade switching are studied and described, existing connection schemes for such systems are analyzed, and several new options with improved characteristics are proposed. A comparative analysis of various connection schemes is made, the most interesting results of such analysis are presented, and conclusions are drawn about the future prospects of certain circuit solutions.Electric drive systems were modeled in the Simulink MATLAB environment using software tools to demonstrate the operation parameters of the considered circuits. CONCLUSION. Various schemes for switching on the asynchronous motor in the Simulink Matlab environment were investigated. The results of the study revealed the potential usefulness of using a circuit with a transformer in the rotor circuit, as well as the construction of a multi-motor electric drive with a common transformer and a common frequency converter circuit. The efficiency of parallel connection of rotary circuits of a two-motor electric drive was demonstrated. The methods of returning the sliding energy to the network are also compared, and their effectiveness in a comparative analysis with the operation in the closed-loop rotor mode is demonstrated.

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36

Fathoni, Agus Pracoyo, Totok Winarno, and Rizal Sabillah. "RANCANGBANGUN RANGKAIAN INVERTER SPWM UNIPOLAR 1 FASA DENGAN PENGATURAN FREKUENSI OUTPUT." Jurnal Teknik Ilmu Dan Aplikasi 9, no. 1 (April 26, 2021): 46–49. http://dx.doi.org/10.33795/jtia.v9i1.10.

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Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as the ac motor speed, heater and lamp. Inverter work is done by ac rectification first and then converted again to a 1 phase ac signal. The ac output signal is a sinosoidal PWM (SPWM) type of unipolar 220 volts from the input 24 volt dc voltage. Unipolar SPWM signal generation is done by a microcontroller with programming. The number of counts (resolutions) of the SPWM signal and the period are set from the amount in the register, can be set to 8 bits or other constants. The power part of the SPWM inverter is the N channel MOSFET bridge circuit H with IR2110 solid state driver. Step transformer as a load while step-up the inverter output voltage. Determination of the output frequency is set through a rotary encoder that can be adjusted up (increment) or down (decrement). There are 5 frequency variations, namely 30, 40, 50, 60 and 70 Hz. To get the inverter efficiency, the type of MOSFET used is chosen to have the type that has a low RDS (on) value and the right driving pulse, according to the switch configuration. Measurement of the output frequency is done by reading the image on the osciloscope. The observations show a frequency value that is almost the same as the constant. The test results show the difference in output voltage which is reduced at a 30 watt load.

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37

Yu-Ting Huang, Chi-Jen Chen, and Wen-Ben Shu. "Finite element analysis on characteristics of rotary transformers." IEEE Transactions on Magnetics 30, no. 6 (1994): 4866–68. http://dx.doi.org/10.1109/20.334248.

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38

Jimoh, Ahamed, and Emmanuel Omeiza Ajoge. "Exponentially Varying Load on Rayleigh Beam Resting on Pasternak Foundation." JOURNAL OF ADVANCES IN MATHEMATICS 16 (July 1, 2019): 8449–58. http://dx.doi.org/10.24297/jam.v16i0.8219.

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This paper investigates the dynamic behavior of uniform Rayleigh beam resting on Pasternak foundation and subjected to exponentially varying magnitude moving the load. The solution techniques are based on finite Fourier sine transformed Laplace transformation and convolution theorem. The results show that for a fixed value of axial force, damping coefficient and rotatory inertia, increases in shear modulus and foundation modulus reduces the response amplitude of the dynamical system. It was also found that increases in axial force, rotary inertia, and damping coefficient for fixed values of shear modulus and foundation modulus lead to decreases in the deflection profile of the Rayleigh beam resting on Pasternak foundation. Finally, it was found that the effect of shear modulus is more noticeable that of the foundation modulus.

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39

Jachman, John J. "MEASUREMENT OF AUTOMOTIVE-SUSPENSION DISPLACEMENT USING ROTARY VARIABLE DIFFERENTIAL TRANSFORMERS." Experimental Techniques 10, no. 4 (April 1986): 30–33. http://dx.doi.org/10.1111/j.1747-1567.1986.tb01424.x.

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40

Wang, Qiang, Sheng Li Song, and Wei Zhao. "A Method to Measure Rotary Speed and Torque Using JC Sensors." Advanced Materials Research 142 (October 2010): 170–73. http://dx.doi.org/10.4028/www.scientific.net/amr.142.170.

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A method for rotary speed and torque measuring using JC sensors was introduced in the paper. The approximate sine signals output by JC sensors are transformed into rectangular signals by the transform circuit. The checking circuit consists of an 8031 singlechip, it determines the rotary speed by measuring the frequency of the rectangular signals, and determines torque by measuring their pulse width.

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41

Eskelinen, Pekka. "Experimental Rotary Transformers For Antenna Power Supplies and Control [Antenna Designer's Notebook]." IEEE Antennas and Propagation Magazine 52, no. 5 (October 2010): 164–67. http://dx.doi.org/10.1109/map.2010.5687521.

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42

Midgley, G. W., D. Howe, and P. H. Mellor. "An assessment of alternative soft magnetic materials in rotary variable differential transformers." Journal of Applied Physics 81, no. 8 (April 15, 1997): 4295–97. http://dx.doi.org/10.1063/1.364807.

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43

van Vlerken, J. J. L. M., and P. G. Blanken. "Lumped modeling of rotary transformers, heads and electronics for helical-scan recording." IEEE Transactions on Magnetics 31, no. 2 (March 1995): 1050–55. http://dx.doi.org/10.1109/20.364783.

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44

Bastiaens, Koen, Dave C. J. Krop, Sultan Jumayev, and Elena A. Lomonova. "Optimal Design and Comparison of High-Frequency Resonant and Non-Resonant Rotary Transformers." Energies 13, no. 4 (February 19, 2020): 929. http://dx.doi.org/10.3390/en13040929.

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This paper concerns the optimal design and comparative analysis of resonant and non-resonant high-frequency GaN-based rotating transformers. A multi-physical design approach is employed, in which magnetic, electrical, and thermal models are coupled. The results are verified by experiments. Two different optimization objectives are considered; firstly, the efficiency of two standard core geometries is maximized for a required output power level. Secondly, a geometrical optimization is performed, such that the core inertia is minimized for the desired output power level. The results of both design optimizations have shown large improvements in terms of output power and core inertia as a result of applying series–series resonant compensation.

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45

Abolqasemi-Kharanaq, F., R. Alipour-sarabi, Z. Nasiri-Gheidari, and F. Tootoonchian. "Magnetic Equivalent Circuit Model for Wound Rotor Resolver Without Rotary Transformer’s Core." IEEE Sensors Journal 18, no. 21 (November 1, 2018): 8693–700. http://dx.doi.org/10.1109/jsen.2018.2868682.

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46

Wardana, Raka Sudira, and Bastian Andoni. "PERFORMANCE COMPARISON ANALYSIS BETWEEN RSS AND CONVENTIONAL MUD MOTOR IN MAVVAR FIELD." PETRO:Jurnal Ilmiah Teknik Perminyakan 8, no. 3 (September 12, 2019): 113. http://dx.doi.org/10.25105/petro.v8i3.5513.

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<p>Rotary Steerable System (RSS) has transformed the directional drilling industry by producing smoother borehole, reducing torque and drag and enhancing the Rate Of Penetration (ROP). Despite the advantages of using RSS, the conventional steerable motor is still widely used in deviated well due to its lower daily cost. Therefore, to optimize the performance and the cost of the drilling operation, it is critical to analyze when the RSS outweigh the conventional mud motor. This paper analyzes the performance between Rotary Steerable System and Conventional Steerable Motor, based on these following parameters: Rate of Penetration (ROP), overall drilling cost, borehole quality and lost in hole cost. This empirical study uses literature study and quantitative data analysis from several wells in Mavvar Field in compliment. The result shows that the Rotary Steerable System (RSS) provides better performance and more efficient in cost<em>.</em></p>

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TASKIN, BARIS, and IVAN KOURTEV. "MULTI-PHASE ROTARY CLOCK SYNCHRONIZATION OF LEVEL-SENSITIVE CIRCUITS." Journal of Circuits, Systems and Computers 18, no. 05 (August 2009): 899–908. http://dx.doi.org/10.1142/s0218126609005423.

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Resonant clocking technologies provide clock networks with improved frequency, jitter and power dissipation characteristics, however, often require novel automation routines. Resonant rotary clocking technology, for instance, entails multi-phase and nonzero clock skew operation and supports latch-based design. This paper studies the effects of multi-phase synchronization schemes on the minimum clock period for rotary-clock-synchronized circuits, which necessitate the application of clock skew scheduling and employ level-sensitive registers. In experimentation, single, dual, three- and four-phase clocking schemes generated by rotary clock synchronization are applied to a suite of level-sensitive-transformed ISCAS'89 benchmarks. Average clock period improvements of 30.3%, 24.8%, 17.7% and 12.0%, respectively, are observed on average compared to the flip-flop based, zero clock skew circuits. As the number of clock phases increases, smaller improvements are observed due to lesser overall effectiveness of the complementary effects of clock skew scheduling and time borrowing. It is shown, however, that for some circuits (23% of the benchmarks), multi-phase synchronization leads to significant performance benefits in operating frequency.

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Acevedo, Mario, Marco Ceccarelli, and Giuseppe Carbone. "Application of Counter-Rotary Counterweights to the Dynamic Balancing of a Spatial Parallel Manipulator." Applied Mechanics and Materials 162 (March 2012): 224–33. http://dx.doi.org/10.4028/www.scientific.net/amm.162.224.

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The dynamic balancing of a spatial parallel manipulator of three degrees-of-freedom, CaPaMan-2 (Cassino Parallel Manipulator 2), by the application of Counter-Rotary Counterweights (CRCW) is analyzed. To accomplish this objective the mass and inertia of the moving platform are dynamically replaced by point masses located at the points of attachment of the legs to the platform and the mechanism is balanced by considering each of the legs independently. This fully parallel manipulator has three identical legs, each one composed by a four-bar mechanism (an articulated parallelogram) connected to the fixed base, and a link supported by the coupler that connects to the mobile platform. This link, seen as a pendulum, is transformed to a dynamic balancer using a Counter-Rotary Counterweight in order to compensate the motion of the moving platform. In a second stage the articulated parallelogram is modified by adding Counter-Rotary Counterweight plus a Counterweight to dynamic balance its part of the system. As a final result it is obtained a new design, with a parallel manipulator dynamic balanced. The resulting model of the manipulator is validated by dynamic simulation, using general purpose software for the analysis and dynamic simulation of multi-body systems (ADAMS).

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Bai, Xian-Xu, Peng Jiang, and Li-Jun Qian. "Integrated semi-active seat suspension for both longitudinal and vertical vibration isolation." Journal of Intelligent Material Systems and Structures 28, no. 8 (August 31, 2016): 1036–49. http://dx.doi.org/10.1177/1045389x16666179.

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“Functional integration” is to integrate two or multiple systems or mechanisms that are independent with each other and to realize the two or multiple functions using only one actuation system. Maximization of engineering applications of actuation systems could be achieved through the use of the “functional integration” concept-based structural design. In this article, an integrated semi-active seat suspension, mainly composed of a switching mechanism, a transmission amplification mechanism, and a damping force- or torque-controllable rotary magnetorheological (MR) damper working in pure shear mode, for both longitudinal and vertical vibration attenuation, is proposed, designed, and fabricated. The switching mechanism employs the parallelogram frames as a motion guide which keeps the seat moving longitudinally and vertically. Both longitudinal and vertical motions are transformed into a reciprocating rotary motion that is transmitted to the rotary MR damper after an amplification by a gear mechanism. The torque generated by the MR damper can be tuned by adapting the applied current in real time, and hence, effective two-dimensional vibration control of the seat could be realized. The mathematical model of the semi-active seat suspension system is established, and vibration isolation performance of the system is simulated and analyzed. Based on the established experimental test rig, the prototype of the semi-active seat suspension system is tested, and the results of the mathematical model and the experimental test are compared.

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Hassan, Gailan I., and Younis Kh Khdir. "Effect of Rotary Friction Welding Parameters on the Mechanical Behavior ABS/PE Polymers." Academic Journal of Nawroz University 7, no. 4 (December 21, 2018): 104. http://dx.doi.org/10.25007/ajnu.v7n4a278.

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This study deals with the Rotary Friction Welding, (RFW) as a variation of friction welding in which the energy required to make the weld is supplied primarily by the stored rotational kinetic energy of the welding machine. The mechanical energy generated in overcoming friction is continuously transformed into heat. In most circumstances the thermal energy generated is regarded as undesirable, but under controlled conditions it can be used to join materials, as in the case of rotary friction welding. In this paper, similar and dissimilar joints of Acrylonitrile butadiene styrene (ABS) (chemical formula (C8H8)x· (C4H6)y· (C3H3N)z) and Polyethylene (PE) or polyethene or poly(methylene)) are studied. The effects of different rotational rates, plunge depths, and traverse speeds on the microstructure and tensile strength of joints were investigated. Some defects such as pores and cracks were found at inappropriate processing parameters. The tensile test was carried out as the mechanical properties of joints. Different significant parameters were discussed. The maximal and minimal tensile strength indicated and evaluated.

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