How To Use Permanent magnet In A Sentence
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The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.
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Perhaps the most important improvement has been the replacement of an electrical magnet with a series of permanent magnets to generate the cyclotron's magnetic field.
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Ferrite magnets are sintered permanent magnets composed of Barium or Strontium Ferrite.
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Due to the interaction between the permanent magnet and slotted armature lamination, there exists cogging torque in slotted permanent magnet motors, which may cause noise and vibration.
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The mass acted upon by the coil elements can be a permanent magnet or magnets, or electromagnets.
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The hybrid magnet was made by combining electromagnet with permanent magnet ( PM ).
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Uses:Used as important raw material for making praseodymium metal. Also used to make RE permanent magnetic alloys.
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The superiority and inferiority of PM machine is closely related with the function parameter of permanent magnet material which is being used.
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It has not only the advantages of the ordinary permanent magnet starter motor, but also some other advantages, such as higher starting torque, higher no load speed, and lower cost.
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Emphasize discussed industry of earth permanent magnetism from technical angle in recent years progress and development.
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According to Lexus, the Hoverboard implements liquid nitrogen cooled superconductors and permanent magnets to help achieve the levitation effect.
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Permanent Magnet Lifter is a kind of lifting gear.
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Cobalt, which is naturally ferromagnetic, provides resistance to demagnetization in several groups of permanent magnet materials.
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The synergistic scale inhibition effect of rare - earth permanent magnetic material and polyaspartic acid was studied.
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In the subject, permanent magnet linear synchronous motor ( PMLSM ) servo system is a researched object.
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The permanent magnet meter can be used as an ammeter or a voltmeter.
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The sensorless control methods of permanent magnet synchronous motor are mostly on - frequency signal injection or state - observer.
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Permanent magnet generator direct driven ( DPMG ) by wind - turbine becomes the tendency of wind power development.
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The December experiment shows a more or less conventional DC motor with a permanent magnet rotor and a stator wound with toroidal coils; this is an odd choice since toroidal wound coils produce a small external magnetic field and so make very inefficient motors.
The perpetual motion machine « Anglican Samizdat
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Highly experienced in permanent magnet carbon brush, commutator, and other critical motor component & material selection.
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In paramagnetic materials, permanent magnetic moments arise from the intrinsic angular momentum of individual electrons.
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The DSP processor was adopted to realize the permanent magnetic synchronism motor frequency conversion timing system.
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As these ferromagnetic substances (the guitar strings) move within the magnetic field of the permanent magnet, it causes the flux through the bobbin to change.
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Automobile starting motor can be divided into electromagnetic starting and permanent magnet starting.
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Another kind of magnet, the permanent magnet, requires no current.
The Harper Dictionary of Science in Everyday Language
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It is possible to lose the permanent magnetic field (remanence of the iron), which disables the machine from self-starting.
1. Synchronous generator
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Permanent magnetic device. as a new type patent device, is used to ensure the hydroelectric generator to start its static excitation more reliably and more quickly.
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Utilizing rare-earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size.
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The utility model is composed of an annular permanent magnet (1), a magnetic conductive gasket (2), and a cooling tube, which are arranged in a circular column target pipe.
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The main factor is thrust ripple of permanent magnet liner synchronous motor.
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The double-phase composite material of the aluminum alloy and the neodymium iron boron type rare earth permanent magnet material is prepared by using a powder metallurgy method.
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The hybrid magnet was made by combining electromagnet with permanent magnet ( PM ).
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The sensorless control methods of permanent magnet synchronous motor are mostly on - frequency signal injection or state - observer.
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A distinction between positive ( north ) and negative ( south ) magnetic poles of an electromagnet or permanent magnet.
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A new high power-density brushless permanent magnet traction motor with water-cooling stator frame as well as design guideline is presented.
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Uses:Used as important raw material for making praseodymium metal. Also used to make RE permanent magnetic alloys.
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This thesis proposes a sensorless drive system a permanent magnet synchronous motor.
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Switch on by permanent magnetic force. Coils will not get burnt.
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A small amount of Ag incorporated to Sm 2 Co 17 significantly beneficiates this material for permanent magnets fabrication.
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Utilizing rare-earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size.
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Permanent magnetic field focusing has proved to be a useful method of focusing in present-day microwave tube , and is one of the important compose of electronic optics of the microwave tube.
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For example, once upon a time everyone knew that the tomato was deadly poison, and that one could demagnetize a permanent magnet by rubbing garlic on it.
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Permanent magnetism, or ferromagnetism, is a rare property of molecular structures.
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Confirming about the working point of the permanent magnet is an essential premise in calculating of the permanent magnetic circuit.
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The paper preresents a novel current regulation algorithm for Interior permanent magnet synchronous motor field - weakened region.
