Relevant bibliographies by topics / Torque speed characteristics

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Torque speed characteristics'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Torque speed characteristics"

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Kucheruk, V. Yu, I. P. Kurytnik, Ye Z. Oshanov, P. I. Kulakov, A. A. Semenov, D. Zh Karabekova, and A. K. Khassenov. "Computer-measuring system of the induction motor’s dynamical torque-speed characteristics." Bulletin of the Karaganda University. "Physics" Series 94, no. 2 (June 28, 2019): 92–100. http://dx.doi.org/10.31489/2019ph2/92-100.

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Inaguma, Y. "Friction torque characteristics of an internal gear pump." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 6 (April 11, 2011): 1523–34. http://dx.doi.org/10.1177/0954406211399659.

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This paper describes the influence of pump operating conditions, such as operating pressures, pump speeds, and oil temperatures, on the friction torque characteristics of internal gear pumps for automobiles. Additionally, it presents a new mathematical model reflecting the influence of the oil temperature on the friction torque. In an internal gear pump, the friction torque was affected by oil temperature as well as operating pressure and pump speed. When the operating pressure was high, the influence of oil temperature on friction torque at a pump speed of less than 1000 r/min was contrary to that at a pump speed of greater than 1000 r/min. It was considered that the friction torque is fundamentally composed of three components: the component dependent on the operating pressure, dependent on the pump speed, and independent of both the operating pressure and the pump speed. However, the component dependent on the operating pressure was affected significantly by not only the pump speed but also the oil temperature. In addition, another factor besides the viscosity of the oil existed in the component dependent on the pump speed. A mathematical model for the friction torque characteristic of the internal gear pump was newly established by adding factors including the oil temperature to the Wilson’s model. The new model was able to represent with accuracy the experimental friction torque characteristic in the internal gear pump under various pump operating conditions.
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Dolgih, Antonina, and Vladimir Martemyanov. "Speed-Torque Characteristics of Torque Motor with Tape Winding Stator." Известия высших учебных заведений. Электромеханика 64, no. 1 (2021): 37–42. http://dx.doi.org/10.17213/0136-3360-2021-1-37-42.

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The speed-torque characteristics of a torque motor with a new type of active element – the tape winding is considered. The analytical studies of the motor speed-torque characteristics determination is difficult because it is required to take into account the distributed current flowing through the winding elements. This leads to the numerical methods application, in particular, COMSOL Multiphysics software based on the finite element method (FEM). Attention is paid to the changing of the motor developed torque in the presence of EMF created in the winding during the rotor rotation. It is shown that the motor torque with a rotor rotation frequency changing depends mainly on the nature of the distributed current lines flowing through the winding elements, despite the fact that the consumed current value changes to a lesser extent. The obtained speed-torque characteristics of the torque motor has a form similar to ones of separately excited DC motors. The research results allow assessing the expected characteristics of the motor model and are an integral part of the developed design policy of the torque motor with the tape winding stator.
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Han, Zhao Lin, and Feng Liu. "Research on Power Diffluence and Conflux Mechanism of Hydro-Mechanical Transmission." Advanced Materials Research 479-481 (February 2012): 921–24. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.921.

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Abstract. Hydro-Mechanical Transmission (HMT) is a dual-power flow transmission system in which power is transferred parallel by mechanical transmission and hydraulic transmission. There are four types of HMT: torque-diffluence and torque-conflux, torque-diffluence and speed-conflux, speed-diffluence and speed-conflux, speed-diffluence and torque-conflux, when gear pair and planetary train are used as power diffluence or conflux mechanism respectively. And the result of kinematics characteristics analysis indicates that only torque-diffluence and speed-conflux type of HMT can be used as the vehicle transmission system because its output speed characteristics and pump speed characteristics can meet the requirements of the vehicle drive.
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Wang, Dagang, Ruixin Wang, and Jun Zhang. "Dynamic brake characteristics of disc brake during emergency braking of the kilometer deep coal mine hoist." Advances in Mechanical Engineering 12, no. 5 (May 2020): 168781402091809. http://dx.doi.org/10.1177/1687814020918097.

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Dynamic brake characteristics of disc brake during emergency braking of the kilometer deep coal mine hoist were investigated in the present study. The theoretical model of dynamic brake torque of disc brake during emergency braking was given to explore dynamic brake torque properties of disc brake. The three-dimensional thermo-mechanical coupled finite element model of brake disc–brake shoe was established to explore thermo-mechanical characteristics of disc brake during emergency braking. Effects of effective mass, hoisting acceleration and deceleration, and maximum hoisting speed on dynamic brake torques, equivalent von Mises stress, and temperature fields of disc brake during emergency braking were presented. The results show that the evolutions of brake torque, equivalent stress, and temperature of disc brake present fluctuating characteristics. The dynamic brake torque shows the largest change amplitude during emergency braking in the hoisting stage of constant speed. The largest equivalent stress and temperature are both located near the third brake shoe along the rotational direction at each side. An increase in effective mass causes overall decreases in the peak values of brake torque, equivalent stress, and temperature during emergency braking. Increases in hoisting acceleration/deceleration and maximum hoisting speed cause the increases in the maximum equivalent stress and temperature during emergency braking as compared to the slight decrease in the maximum brake torque.
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Pan, Hui, and Xing Cai. "Study on Characteristics of Metal V-Belt Infinitely Variable Power-Split Transmission." Advanced Materials Research 383-390 (November 2011): 785–89. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.785.

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Six kinds of torque-splitting and speed-converging metal V-belt IVPST were raised; their global speed ratio and torque ratio of metal V-belt CVT output to metal V-belt IVPST output were derived. Two different torque-splitting and speed-converging metal V-belt IVPSTs were sum up: series and parallel metal V-belt IVPSTs. In series metal V-belt IVPST, speed ratio changing rate and torque ratio were related to gear ratio of planetary gear train and fixed gear transmission, but in parallel metal V-belt IVPST, that were only related to gear ratio of planetary gear train.
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Wang, Gui Juan. "The Experimental Study on "Soft Start" of Mine Permanent Magnet Coupling." Applied Mechanics and Materials 727-728 (January 2015): 403–5. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.403.

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The "soft start" problem was studied for magnetic coupling in coal mine by experimental method. At first, the starting condition of magnetic coupling was analysed. Aaccording to the load characteristics of conveyor. Secondly, the torque characteristic curve, speed characteristic curve and current starting curve were plotted using the experimental data. From three kinds of characteristic curve we have conclusion that the output torque and output speed is much less than the input torque and input speed, the starting current value with the load was less than the starting current value when directly connected. That means magnetic coupling with the soft start characteristic.
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Zhang, Lin, Chao Wei, and Ji Bin Hu. "Model for the prediction of drag torque characteristics in wet clutch with radial grooves." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 12 (November 28, 2018): 3043–56. http://dx.doi.org/10.1177/0954407018814959.

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Drag torque can cut down the efficiency of the vehicle transmission system. So it should be reduced on the premise of normal vehicle lubrication and heat dissipation. The purpose of this paper is to analyze the variation rule of drag torque in single-plate wet clutch from the perspective of flow rate, density, and viscosity. In the theoretical model of drag torque, the flow field is divided into oil film area and cavitation zone. Based on the mass flow conservation and viscosity–pressure equation, the equivalent density and viscosity of each node in each region are obtained. Then the total drag torque is calculated through the sum of each node’s torque. Finally, the curves of drag torque with rotational speed under different working conditions are obtained by numerical calculation, and they have been tested and verified. Through this research, the following conclusions can be reached: the rotational speed of the peak of drag torque is near the maximum speed where full oil film lubrication is realized. While temperature declines, it will lead to higher viscosity, then the speed of the lubricant along the radial direction will decrease, resulting in the increase in maximum speed of full oil film lubrication under the same oil supply; accordingly, the peak of drag torque will rise. If the flow rate of oil supply is increased, the maximum speed where full oil film lubrication is realized will be higher; consequently, the maximum drag torque will be improved. When clearance becomes wider, the cross-sectional area of the radial flow will be larger, then the maximum speed of full oil film lubrication under the same oil supply will be decreased, thus the peak of drag torque will decline.
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Jeong, S. S., J. K. Park, and T. G. Park. "Speed and Torque Characteristics of Three-Phase Ultrasonic Motor." Ferroelectrics 466, no. 1 (May 9, 2014): 110–18. http://dx.doi.org/10.1080/00150193.2014.895171.

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Nelatury, S. R. "Uniqueness of Torque-Speed Characteristics of an Induction Motor." IEEE Transactions on Magnetics 40, no. 5 (September 2004): 3431–33. http://dx.doi.org/10.1109/tmag.2004.831628.

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Dissertations / Theses on the topic "Torque speed characteristics"

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Kouns, Heath. "Analysis of Performance Characteristics of Electric Vehicle Traction Drive in Low Speed/Low Torque Range." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/36287.

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In a world with a growing population there is a trend toward higher and higher energy usage. Because of the cost involved in producing extra energy, there is a need for more efficient usage of the energy that is already available. The issue of efficiency rings home especially clear with electric motors. Although induction motors are used in many different applications, the motors used in electric vehicles must be able to generate a large starting torque as well as operate over a wide speed range. This work analyzes the restrictions placed on the motor and inverter drive system. It also looks at the best method for controlling the drive in order to achieve the highest efficiency out of the drive. While other works have shown methods of achieve high efficiency out of the motor, it is the assertion of this work that the efficiency of the total drive is more important. It is to that end that this work analyzes the performance of an induction motor under low torque and speed where a traction drive utilizes the most energy.
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Cazaban, Philip M. "Experimental Analysis of the Flow, Pressure, Speed, and Torque Characteristics of Two Eaton Geroler Hydraulic Motors." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1312124231.

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Guan, Yang. "Torque-speed characteristics of induction machine and hybrid permanent magnet assisted synchronous reluctance machine for electric vehicle application." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/7867/.

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This thesis describes an investigation into two types of electrical machines for EV/HEV applications, i.e. induction machine (IM) and permanent magnet assisted synchronous reluctance machine (PMA-SynRM). Both are low-cost due to no or less usage of NdFeB permanent magnet (PM), compared with interior PM (IPM) machines. IM is investigated with particular reference to its maximum torque/power-speed characteristic. Firstly, an analytical method based on dq-axis reference frame to obtain the maximum torque/power-speed characteristic is developed and validated by experiments. Then, the influences of some design parameters on the flux-weakening performance are investigated, such as the ratio of leakage to mutual inductance, stator and rotor resistances, and iron saturation, etc. In addition, the influences of some physical parameters on the torque/power-speed characteristic are investigated, including split ratio, number of stator/rotor slots per pole per phase, length of airgap, number of pole pairs and stator/rotor slot area, etc. Finally, the difference in maximum torque/power-speed characteristics between motor and generator modes is described, and how the design parameters influence the difference is investigated. For PMA-SynRM, a novel hybrid-PM assisted SynRM is proposed, which utilizes both ferrite and NdFeB PMs. The design process is presented and the electromagnetic performance and material cost are analyzed and discussed. The analyzed electromagnetic performances include electromagnetic torque, flux density, back electromotive force (EMF), torque/power-speed characteristic, power factor, torque ripple, cogging torque and demagnetization, etc. Finally, the electromagnetic performances and material costs of IM and hybrid-PM assisted SynRM are compared with those of IPM, respectively, including torque capability per Ampere, torque/power-speed characteristic, power factor, torque ripple and efficiency map, etc.
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Cipín, Radoslav. "Moderní matematické metody syntézy a analýzy střídavých strojů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233566.

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The doctoral thesis is divided into three main parts with a focus on induction motors. The first part deals with the electromagnetic design and analysis of windings of AC ma-chines. There is introduced the density of conductors, which describes the distribution of the windings in the slots. There is derived general formula for calculation of the total winding factor applicable to any type of winding. The second part of this work deals with the acceleration method of the induction motors torque-speed characteristics measurement. The measured characteristics are used for exact identification of the equivalent circuit parameters of induction motor. The third section is focused on a very precise identification of the equivalent circuit parameters of induction motor in the form of -circuit. The identification is based on mutual comparison of measured and calculated torque-speed and current-speed characteristics.
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Schlesinger, Petr. "Návrh jednofázového asynchronního motoru s pomocnou fází." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217639.

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This master’s thesis’s target is to introduce the basic findings about single-phase asynchronous motors, their derivation from three-phase motors and the basics of a computation process and a concept of a single-phase asynchronous squirrel cage motor. The inbeing of this concept and the computation is created by classical processes for three-phase motors with a low voltage, 50 Hz.
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Cipín, Radoslav. "Matematické modely transformátorů a asynchronních motorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217586.

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The fist part of this work is dealt with the construction of the mathematical models of voltage and current transformers. There are created and simulated models of voltage and current transformer with the nonlinear magnetization characteristics. The second part of this work is dealt with equivalent circuit of the induction motor in the form of Gamma-circuit. The speed-torque characteristic and the dependence of stator current on the slip are calculated from this equivalent circuit. The third part of this work is dealt with electromagnetic design of the alternating current machines by the help of a classic way and a new way.
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Minnaar, Ulrich John. "Development of a programmable load." Thesis, 2006. http://hdl.handle.net/10539/1696.

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Student Number : 0400486V - MSc (Eng) dissertation - School of Electrical and Information Engineering - Faculty of Engineering and the Built Environment
The Voltage Dip Test Facility at the University of the Witwatersrand utilises a resistive load during testing of variable speed drives. This method produces valuable results regarding the performance of drives under dip conditions. It has been shown that load type does influence the performance of drives and this variation cannot be tested under current conditions as only linear loading is attainable with resistive loads. This thesis proposes a programmable load based on the concept of field-oriented control of an induction motor. The concepts involved with field-oriented control are discussed and shown to be suitable for this application. An implementation strategy utilising custom-designed software and an off-the-shelf VSD is developed and executed. The performance of the programmable load is analysed under both steady-state and dynamic conditions.
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Books on the topic "Torque speed characteristics"

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Vaez-Zadeh, Sadegh. Introduction. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198742968.003.0001.

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An overview of permanent magnet synchronous (PMS) motors and the related control system are presented in this chapter as introductory materials for the rest of the book. The interconnections of the control system to the power electronic inverter and the motor are emphasized. In addition, the major parts of the system are overviewed. Pulse width-modulated voltage source inverter, as the most commonly used power converter in PMS motor drives, is briefly discussed. PMS motors configurations and operating principles are also presented after considering characteristics of permanent magnet materials. Major PMS motor control methods including vector control, direct torque control, predictive control, deadbeat control, and combined vector and direct torque control are briefly reviewed. Finally, several rotor position and speed estimation schemes, and offline and online parameter estimation methods are overviewed.
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Book chapters on the topic "Torque speed characteristics"

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Tremlett, Anthony, David Purdy, Nick Vaughan, Francis Assadian, Adrian Moore, and Martin Halley. "The Influence of Torque and Speed Sensitive Differential Characteristics in a Front Wheel Drive Vehicle During On-Limit Manoeuvres." In Lecture Notes in Electrical Engineering, 79–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33744-4_8.

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"Multi-step operation: torque/speed characteristics." In Stepping Motors: a guide to theory and practice, 41–58. Institution of Engineering and Technology, 2002. http://dx.doi.org/10.1049/pbce063e_ch4.

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"Appendix: pull-out torque/speed characteristics." In Stepping Motors: a guide to theory and practice, 149–50. Institution of Engineering and Technology, 2002. http://dx.doi.org/10.1049/pbce063e_ch9.

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"DC Motor Functionality." In Advances in Computer and Electrical Engineering, 180–262. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8441-6.ch007.

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This chapter deals with the core of direct current machines. In this chapter, the authors present a very detailed insight about the principle of operation of DC motor. They Discuss torque generated from motors. Then they discuss counter emf or back emf. Speed of rotation is then discussed. They then discuss power developed by motor, relation between torque and speed of a motor, speed-torque characteristics, torque-load characteristics, shunt motor, series motor, compound motor, speed-load characteristics, and cumulative compound motor. Differential compound motor is then discussed along with discussion of speed regulation. This chapter ends with starting of DC motor and a discussion over four point starting box.
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Nadia, Bendaoud, and Mehala Kadda. "Turbulent Flow Fluid in the Hydrodynamic Plain Bearing to a Non-Textured and Textured Surface." In Tribology [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94235.

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Hydrodynamic bearing are components that provide the guiding in rotation of rotating machines, such as turbines, the reactors. This equipment works under very severe operating conditions: high rotational speed and high radial load. In order to improve the hydrodynamic performance of these rotating machines, the industrialists specialized in the manufacture of hydrodynamic journal bearings, have designed a bearing model with its textured interior surface. The present work is a numerical analysis, carried out to observe the effect of a turbulent fluid flow in a non-textured and textured plain bearing and to thus to see the improvement of the hydrodynamic and tribological performances to a non- textured and textured surface of the plain bearing, under severe operating parameters. The rotational velocity varies from 11,000 to 21,000 rpm and radial load ranging from 2000 N to 9000 N. The numerical analysis is performed by solving the continuity equation of Navier-Stocks, using the finite volume method. The numerical results show that the most important hydrodynamic characteristics such as pressure, flow velocity of the fluid, friction torque, are significant for the textured plain bearing under rotational velocity of 21,000 rpm and radial load 10,000 N compared to obtained for a non-textured plain bearing.
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Conference papers on the topic "Torque speed characteristics"

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Trawinski, Tomasz, and Adam Kochan. "Torque speed characteristics of torsional torque generator for supporting drilling processes." In 2018 Applications of Electromagnetics in Modern Techniques and Medicine (PTZE). IEEE, 2018. http://dx.doi.org/10.1109/ptze.2018.8503091.

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Cipin, Radoslav, Miroslav Patocka, and Jiri Vondrus. "Acceleration method of the IM torque-speed characteristics measurement." In 2011 International Conference on Power Engineering, Energy and Electrical Drives (POWERENG). IEEE, 2011. http://dx.doi.org/10.1109/powereng.2011.6036531.

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Niu, S., S. L. Ho, and W. Fu. "Fast computation of torque-speed characteristics of induction machines." In 2015 IEEE International Magnetics Conference (INTERMAG). IEEE, 2015. http://dx.doi.org/10.1109/intmag.2015.7156783.

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Agamloh, Emmanuel, Andrea Cavagnino, and Silvio Vaschetto. "Accurate determination of induction machine torque and current versus speed characteristics." In 2016 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2016. http://dx.doi.org/10.1109/ecce.2016.7854812.

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Markovic, M., A. Hodder, and Y. Perriard. "An analytical determination of the torque-speed and efficiency-speed characteristics of a BLDC motor." In 2009 IEEE Energy Conversion Congress and Exposition. ECCE 2009. IEEE, 2009. http://dx.doi.org/10.1109/ecce.2009.5316437.

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Toman, Marek, Radoslav Cipin, Martin Mach, and Pavel Vorel. "Application of acceleration method for evaluation of induction motor torque-speed characteristics." In 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2017. http://dx.doi.org/10.1109/eeeic.2017.7977585.

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Bertoluzzo, Manuele, Giuseppe Buja, Ritesh Kumar Keshri, and Roberto Menis. "Analytical study of Torque vs. speed characteristics of PM brushless DC drives." In IECON 2012 - 38th Annual Conference of IEEE Industrial Electronics. IEEE, 2012. http://dx.doi.org/10.1109/iecon.2012.6388722.

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Narasimham, P. V. R. L., A. V. R. S. Sarma, and E. Vargilkumar. "Low cost inverter topologies for extended torque speed characteristics of spindle motor." In 2011 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2011. http://dx.doi.org/10.1109/iemdc.2011.5994652.

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Hedman, Anders. "Hydrodynamic Torque Converters in Mechanical Transmission Systems: Methods and Analysis." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-285.

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Methods for analysis of general mechanical transmission systems with a hydrodynamic torque converter (HTC) are presented. The methods are adapted for computer calculations. The properties of the HTC must be known, either explicitly as speed and torque characteristics, or implicitly as internal geometry (blade angles, etc.). Linear relationships between the torques and between the speeds of the shafts of the transmission system (except the HTC) are easily formulated. The HTC has coupled, non-linear, relationships for torques and speeds. Different ways of including these non-linear equations are presented. This can be implemented in a computer program. Solving the equation system yields the torque and speed of each shaft of the transmission system. Power losses can be handled.
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Sharma, Krishan K., A. Swarup, and Bhim Singh. "Current limit determination of brushless DC motors for binary speed control of known load torque speed characteristics." In 2017 International Conference on Power and Embedded Drive Control (ICPEDC). IEEE, 2017. http://dx.doi.org/10.1109/icpedc.2017.8081084.

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