Results 211 to 220 of about 8,132 (232)
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Current delta control for conical bearingless switched reluctance motors
2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2018The rotor of the conical bearingless switched reluctance motor can be fully levitated and rotate at the same time without magnetic bearings. This paper proposes a novel control method for this type of motors. By reconstructing the winding currents as three different components, the five-axes positions and rotor angular velocity can be regulated by the ...
Chenhao Liu +4 more
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A novel 6/4 conical bearingless switched reluctance motor
2015 18th International Conference on Electrical Machines and Systems (ICEMS), 2015Generally the conventional bearingless switched reluctance motors (BSRMs) need to work with magnetic bearings to realize the active control of five-Degrees Of Freedom (5-DOF) of the rotating part. However, this kind of structure increases the total cost and reduces overall efficiency of the 5-DOF suspension system.
Heng Zhou +4 more
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Analysis of a conical optical beam deflector insensitive to motor wobble
Applied Optics, 1995The analysis of a patented optical beam deflector based on a rotating prism is presented. It is shown that because of the transmissive, as opposed to reflective, nature of the proposed deflector, the resulting scan spot is for all practical purposes completely free of the tracking error that is so problematic to all reflective-type deflectors.
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The Conical Pendulum Driven with a LEGO® Stepper Motor
The Physics Teacher, 2018This work describes a way to study uniform circular motion (UCM) using a LEGO® MINDSTORMS® Robotics Invention System (RIS) stepper motor with a steel ball attached to a string. The equipment is inexpensive and the resulting motion takes place on a human scale. Times and lengths can be measured with a stopwatch and a meterstick, respectively.
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Motoring performance of a conical pole-pair separated bearingless electric machine
IEEE 2011 EnergyTech, 2011In standard motor applications, traditional mechanical bearings represent the most economical approach to rotor suspension. However, in certain high performance applications, rotor suspension without bearing contact is either required or highly beneficial.
Peter Kascak +4 more
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Compensation control of axial force for conical bearingless switched reluctance motors
2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2018Conical bearingless switched reluctance motors (CBSRMs) can provide axial forces for 5-Degree-Of-Freedom (5-DOF) magnetic levitation driving system. The electromagnetic field of the CBSRM is so complicated that the electromagnetic forces are difficult to control including torque and levitation forces.
Xiaodi Li +3 more
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A Flexible Control Method of Axial Force for Conical Bearingless Switched Reluctance Motors
2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), 2018The 5-Degree-Of-Freedom (5-DOF) magnetic levitation technique can further increase the power density of driving systems in aircraft applications. The conical bearingless switched reluctance motor (CBSRM) can generate the axial force due to its conical rotor structure, thus it can be adopted to remove the axial magnetic bearing in the 5-DOF magnetic ...
Xin Cao +4 more
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Single Machine Control of Axial Force for Conical Bearingless Switched Reluctance Motors
2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019The five Degree-of-Freedom active suspension system consisting of two conical bearingless switched reluctance motors(CBSRMs) is a novel structure. The rotor can rotate and fully suspend at the same time without magnetic bearings. This paper proposes a single machine control method of axial force for CBSRMs.
Wei Miao, Xin Cao, Xiaodi Li, Hongyan Hu
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Analysis of non-uniform magnetic flux distribution in conical rotor double-speed induction motors
2019 16th Conference on Electrical Machines, Drives and Power Systems (ELMA), 2019The variable geometric dimensions of the magnetic circuit in the conical rotor induction motors in axial direction makes the magnetic flux non-uniform distribution in the length of the magnetic core. An analytical multisectional method for electromagnetic calculation has been developed accounting the special features of the motor design.
George TODOROV, Dimitar JETCHEV
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