Results 251 to 260 of about 955,636 (307)
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Proceedings of the IEE Part A: Power Engineering, 1957
The magnetic field of a linear motor is evenly distributed over the airgap between the primary and secondary members by providing a ladderlike grid structure of conductors at each side, by interleaving the laminations with conductive stampings near the sides, by strips of conductive material on or near the surface of the stator, or by chamfering the ...
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The magnetic field of a linear motor is evenly distributed over the airgap between the primary and secondary members by providing a ladderlike grid structure of conductors at each side, by interleaving the laminations with conductive stampings near the sides, by strips of conductive material on or near the surface of the stator, or by chamfering the ...
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The Journal of the Acoustical Society of America, 1994
A linear ultrasonic motor which presses a rail against an ultrasonic vibrator, which is substantially elliptically vibrating and conducts relative movement, wherein a protrusion or a groove is provided such that the sectional form of the rail is concave, convex, trapezoidal or triangular.
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A linear ultrasonic motor which presses a rail against an ultrasonic vibrator, which is substantially elliptically vibrating and conducts relative movement, wherein a protrusion or a groove is provided such that the sectional form of the rail is concave, convex, trapezoidal or triangular.
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Theories of the Linear, Induction Motor and Compensated Linear Induction Motor
IEEE Transactions on Power Apparatus and Systems, 1972The paper explains two new theories of the linear induction motor, and indicates that the end effect exercises very adverse influence on motor performances, and proposes the compensated linear induction motor as a measure to eliminate. the end effect.
S. Yamamura, H. Ito, Y. Ishulawa
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1999
Topology and Selection Definitions, Geometry, and Thrust Generation Linear Synchronous Motor Topologies Calculation of Forces Linear Motion Selection of Linear Motors Materials and Construction Materials Laminated Ferromagnetic Cores Permanent Magnets Conductors Principles of Superconductivity Laminated Stacks Armature Windings of Slotted Cores ...
Jacek Gieras, Zbigniew Piech
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Topology and Selection Definitions, Geometry, and Thrust Generation Linear Synchronous Motor Topologies Calculation of Forces Linear Motion Selection of Linear Motors Materials and Construction Materials Laminated Ferromagnetic Cores Permanent Magnets Conductors Principles of Superconductivity Laminated Stacks Armature Windings of Slotted Cores ...
Jacek Gieras, Zbigniew Piech
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Magnetostrictive linear motor development
IEEE Transactions on Magnetics, 1998We are currently designing a high force linear motor that utilizes the inchworm principle coupled with multi-phase actuation. The efficient design of a 17 kN force linear motor that utilizes the magnetostrictive material Terfenol-D requires a transient electromechanical model to determine the operating parameters.
J.P. Teter +3 more
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1972
In the early years of the 20th century, when rotating electrical machines had become established and made to perform satisfactorily, it was realised that these machines could be made in a different form which would use or produce motion in a straight line, instead of the normal rotary motion.
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In the early years of the 20th century, when rotating electrical machines had become established and made to perform satisfactorily, it was realised that these machines could be made in a different form which would use or produce motion in a straight line, instead of the normal rotary motion.
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Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035), 2003
This paper describes a methodology to design slotless linear motors through use of a finite element database. Simple lumped parameter models are found inadequate to describe the general flux path of the motor. The database is used in an iterative design program to investigate a host of potential designs.
B.K. Fussell, D.R. James, S.R. Prina
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This paper describes a methodology to design slotless linear motors through use of a finite element database. Simple lumped parameter models are found inadequate to describe the general flux path of the motor. The database is used in an iterative design program to investigate a host of potential designs.
B.K. Fussell, D.R. James, S.R. Prina
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Linear stepping ultrasonic motor
Journal of Electroceramics, 2007A linear stepping ultrasonic motor, based on vibrators alternative driving and slider grooves positioning, is proposed in this paper. The step-by-step movements can be obtained by exciting two vibrators of stator by turns. The motor is capable of bi-direction stepping movements without accumulative position errors driven by an open-loop control circuit,
Jiamei Jin, Chunsheng Zhao
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Smart Materials and Structures, 1998
The development of a linear hybrid transducer type piezoelectric motor is shown. This design has the advantages of light weight, macro- and micro-positioning, and large force/velocity output. The motor consists of a longitudinal actuator that provides output displacement and force, and two alternating clamping actuators which provide the holding force.
David Newton +2 more
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The development of a linear hybrid transducer type piezoelectric motor is shown. This design has the advantages of light weight, macro- and micro-positioning, and large force/velocity output. The motor consists of a longitudinal actuator that provides output displacement and force, and two alternating clamping actuators which provide the holding force.
David Newton +2 more
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Linear Synchronous Motor Design
IEEE International Conference on Electric Machines and Drives, 2005., 2005This paper provides a high level discussion of the design and application of linear synchronous motors. Design issues include field magnets, stator winding, power electronics, position sensing and control, mechanical structure, and cost.
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