Analysis and Optimization Design of Self Magnetic-Suspension Permanent Magnet Linear Synchronous Motor

2011 ◽  
Vol 383-390 ◽  
pp. 4762-4767
Author(s):  
Wu Zhang ◽  
Yi Peng Lan ◽  
Feng Ge Zhang
Keyword(s):  
Permanent Magnet ◽  
Optimization Design ◽  
Synchronous Motor ◽  
Magnetic Suspension ◽  
Feed System ◽  
Nc Machine Tool ◽  
Linear Synchronous Motor ◽  
Nc Machine ◽  
Christoffel Transformation ◽  
The Magnetic Field

In order to eliminate the friction force of linear motor nc machine tool feed system and improve the machining precision, a new Self Magnetic-Suspension Permanent Magnet Linear Synchronous Motor(PMLSM)is putted forward in this paper, which can generate the suspending power by itself. In this paper, the magnetic field distribution is calculated by means of equivalent magnetizing current and Schwarz-christoffel transformation, and is further analyzed and verified by using Finite Element Method. Furthermore, the method of optimizating the length of the primary iron-cored is adopted to design the motor. The experimental results shows that self magnetic suspension -PMLSM can generate thrust and suspending force separately, and the thrust and suspending force are improved by applying optimized method.

Analysis on Cogging Torque of Permanent Magnet Synchronous Motor for NC Machine Tool Servo-System

2010 ◽  
Vol 44-47 ◽  
pp. 1878-1882
Author(s):  
Shen Bo Yu ◽  
Hui Dong ◽  
Xin Feng ◽  
Jing Yuan
Keyword(s):  
Machine Tool ◽  
Permanent Magnet ◽  
Optimization Design ◽  
Permanent Magnet Synchronous Motor ◽  
Fem Simulation ◽  
Servo System ◽  
Synchronous Motor ◽  
Cogging Torque ◽  
Nc Machine Tool ◽  
Nc Machine

This paper presents a procedure of calculating cogging torque of Permanent Magnet Synchronous Motor (PMSM) for NC machine tool servo-system based on finite element method (FEM). Simulation models of PMSM are established to complete coupled calculation between magnetic fields and mechanical dynamics. Furthermore, the distributions of magnetic flux and electromagnetic force densities are also gained. Finally, the cogging torque of the motor in operating process is suppressed by changing slot opening configuration. The references for the optimization design on NC machine tool servo-system are provided by the simulation model.

scholarly journals A Review on Disturbance Analysis and Suppression for Permanent Magnet Linear Synchronous Motor

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 77
Author(s):  
Xuezhen Wang ◽  
Feixue Chen ◽  
RenFeng Zhu ◽  
Xiaolu Huang ◽  
Na Sang ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Thermal Effects ◽  
High Speed ◽  
Synchronous Motor ◽  
Ball Screw ◽  
Mitigation Measures ◽  
Feed System ◽  
Residual Vibration ◽  
Linear Synchronous Motor ◽  
Disturbance Analysis

In high-end testing and manufacturing equipment, a trend exists whereby the traditional servo feed system with a ball screw and rotary motor will gradually be replaced by a direct drive system. The precision motion system driven by a permanent magnet linear synchronous motor (PMLSM) offers several advantages, including high speed, high acceleration, and high positioning accuracy. However, the operating precision of the feed device will be affected by the PMLSM robustness to nonlinear and uncertain disturbances, such as cogging force, friction, thermal effects, residual vibration, and load disturbance. The aim of this paper was to provide a survey on disturbance analysis and suppression approaches to improve the dynamic performance of PMLSM motion systems. First, the origin and inhibition methods of thrust ripple and friction are presented. Second, the mechanisms, modeling approaches, and mitigation measures of thermal effects are introduced. Additionally, the residual vibration characteristics and suppression methods are discussed. Finally, disturbance observers of periodic and aperiodic loads are introduced. These suppression methods from structural design and control compensation are then discussed in order to improve the dynamic response and steady-state accuracy of PMLSM.

scholarly journals Electromagnetic Design of Toroidal Permanent Magnet Linear Synchronous Motor

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Yinhao Mao ◽  
Zhaolong Sun ◽  
Weichang Zhou ◽  
Zhexin Zhuang ◽  
Hanning Qian
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
Electromagnetic Design ◽  
Linear Synchronous Motor
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