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Thrust Performance Analysis of Cylindrical Permanent Magnet Linear Synchronous Motor Based on Finite Element Method

Hao Xiong, Guang Wei Meng, Zhan Qing Yang, Li Zhou

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Abstract

The cylindrical permanent-magnet linear motor (PMLSM), as a linear driving device, produces the electromagnetic force to cause linear motion through the electricity directly and does not need additional mechanical conversion devices to transform rotation to linear motion. This paper calculates the electromagnetic distribution and force of two kinds of cylindrical PMLSM by ANSYS, and compares and analyzes their thrust performance. It is concluded that a radially magnetized cylindrical PMLSM is suitable for the applications requiring smaller speed variation while an axially magnetized one possesses a bigger thrust and thrust variation yet.

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What this paper is about

The cylindrical permanent-magnet linear motor (PMLSM), as a linear driving device, produces the electromagnetic force to cause linear motion through the electricity directly and does not need additional mechanical conversion devices to transform rotation to linear motion. This paper calculates the electromagnetic distribution and force of two kinds of cylindrical PMLSM by ANSYS, and compares and analyzes their thrust performance. It is concluded that a radially magnetized cylindrical PMLSM is suitable for the applications requiring smaller speed variation while an axially magnetized one possesses a bigger thrust and thrust variation yet.

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Available abstract

The cylindrical permanent-magnet linear motor (PMLSM), as a linear driving device, produces the electromagnetic force to cause linear motion through the electricity directly and does not need additional mechanical conversion devices to transform rotation to linear motion. This paper calculates the electromagnetic distribution and force of two kinds of cylindrical PMLSM by ANSYS, and compares and analyzes their thrust performance. It is concluded that a radially magnetized cylindrical PMLSM is suitable for the applications requiring smaller speed variation while an axially magnetized one possesses a bigger thrust and thrust variation yet.

Key concepts: Thrust, Linear motor, Linear motion, Finite element method, Magnet, Rotation (mathematics), Mechanical engineering, Rotation around a fixed axis

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