X-Y linear synchronous motors without force ripple and core loss for precision two-dimensional drives

2002 ◽  
Vol 38 (5) ◽  
pp. 3273-3275 ◽  
Author(s):  
N. Fujii ◽  
K. Okinaga
Keyword(s):  
Core Loss ◽  
Two Dimensional ◽  
Synchronous Motors ◽  
Linear Synchronous Motors ◽  
Force Ripple

Study on Dynamic Performance of Linear Direct Drive Based on Pole Placement

2012 ◽  
Vol 215-216 ◽  
pp. 926-929 ◽  
Author(s):  
Chao Pan ◽  
Jian Min Zuo ◽  
Mu Lan Wang
Keyword(s):  
Theoretical Analysis ◽  
Disturbance Rejection ◽  
Machine Tools ◽  
Dynamic Performance ◽  
Parameter Variation ◽  
Pole Placement ◽  
Direct Drive ◽  
Synchronous Motors ◽  
Linear Synchronous Motors ◽  
Force Ripple

Permanent magnet linear synchronous motors (PMLSM) can serve as direct drive actuators for machine tools. However, PMLSM is more easily affected by load disturbance, force ripple and parameter variation. As a result, the design of an appropriate controller and research on dynamic performance are very important for PMLSM. In this paper, a feedback controller based on pole-placement is proposed to achieve desired tracking performance. The effectiveness and feasibility of the proposed method are demonstrated through theoretical analysis. The dynamic response and disturbance rejection ability for linear servo system were researched and the parameters which influence the dynamic performance of the system were discussed.

A New Hybrid Excited Magnetic Levitation Feeding Platform

2013 ◽  
Vol 385-386 ◽  
pp. 772-776 ◽  
Author(s):  
Hong Bing Yang ◽  
Si Jia Yu ◽  
Ren Jie Yang ◽  
Yue Hong Dai ◽  
Chuan Sheng Tang
Keyword(s):  
Machine Tools ◽  
Magnetic Levitation ◽  
Frictional Resistance ◽  
Optimization Methods ◽  
Synchronous Motors ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Inherent Problem ◽  
Linear Synchronous Motors ◽  
Force Ripple

Frictional resistance is an inherent problem to traditional feeding platforms of NC machine tools, while magnetic levitation is a good solution. The structure and operating principle of a magnetic levitation feeding platform based on the hybrid excited linear synchronous motor are proposed, and the FEA to the electromagnetic force and normal force of the motor is launched using Maxwell2D. To the problem of force ripple two optimization methods are adopted by simulating to prove the feasibilities of the direct driving by hybrid excited linear synchronous motors and the frictionless feeding of NC machine tools.

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