Analysis of permanent magnet linear synchronous motor for servo system using 3-D equivalent magnetic circuit network method

2003 ◽  
Author(s):  
In-Soung Jung ◽  
Jin Hur ◽  
Dong-Seok Hyun
Keyword(s):  
Permanent Magnet ◽  
Magnetic Circuit ◽  
Servo System ◽  
Synchronous Motor ◽  
Linear Synchronous Motor ◽  
Network Method

The Design Method for Actuators with Field Magnets of Dual Halbach Arrays

2013 ◽  
Vol 416-417 ◽  
pp. 227-232
Author(s):  
Mimpei Morishita ◽  
Takayuki Fukuda
Keyword(s):  
Permanent Magnet ◽  
Magnetic Circuit ◽  
Design Method ◽  
Algebraic Approach ◽  
Synchronous Motor ◽  
Air Gap ◽  
Linear Synchronous Motor ◽  
Halbach Arrays

The proposed magnetic circuit precisely evaluates magnetic fluxes between the field magnets of dual Halbach arrays. In the case that an actuator is configured with the dual Halback arrays and the armature coils between them, the air gap length between the dual Halbach arrays gives the maximum number of interlinkage magnetic fluxes with the armature coil through algebraic approach. The new design method is on the basis of the proposed magnetic circuit. This method makes it clear that the air gap length should be more than 1.2 times longer than the permanent magnet poles length. The utility of this design method is verified through designing cylindrical linear synchronous motor provided with the dual Halbach arrays.

scholarly journals MINIMIZING THE DETENT FORCE IN PERMANENT MAGNET LINEAR SYNCHRONOUS MOTOR FOR DRIVING OF 2D LASER MARKING TABLE

2017 ◽  
Vol 3 ◽  
pp. 174
Author(s):  
Lyubomir Lazov ◽  
Peter Uzunov
Keyword(s):  
Permanent Magnet ◽  
Magnetic Circuit ◽  
Substantial Reduction ◽  
Synchronous Motor ◽  
Linear Motor ◽  
The Finite Element Method ◽  
Movable Part ◽  
Laser Marking ◽  
Detent Force ◽  
Linear Synchronous Motor

In this paper the research results for reducing the detent force in one innovative permanent magnet linear synchronous motor for 2D laser marking system was published. There two methods are used. The first of these methods features the usage of two additional end teeth with chamfers in the magnetic circuit of the movable part. In the second method, the teeth of the ferromagnetic core are with different lengths. As a result of the change of the air gap permeance in both cases substantial reduction of detent force is achieved, in multiples at times. The results obtained are based on modeling and analyzing the linear motor magnetic field by the Finite Element Method (FEM). Provided experimental research of the linear motor prototype proves the correctness of the simulations results.

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