Finite element analysis of the cogging force in the linear synchronous motor array for the Thirty Meter Telescope

被引：22

作者：

Gilardi, Gabriele ^{[2
]}

Szeto, Kei ^{[3
]}

Huard, Steve ^{[4
]}

Park, Edward J. ^{[1
,2
]}

机构：

[1] Simon Fraser Univ, Sch Engn Sci, Surrey, BC V3T 0A3, Canada

[2] Univ Victoria, Dept Mech Engn, Victoria, BC V8W 3P6, Canada

[3] NRC Herzberg Inst Astrophys, Dominion Astrophys Observ, Victoria, BC V9E 2E7, Canada

[4] Parker Hannifin Corp, Electromech Automat, NA, Rohnert Pk, CA 94928 USA

来源：

MECHATRONICS | 2011年 / 21卷 / 01期

关键词：

Thirty Meter Telescope; Cogging force; Permanent magnets; Linear synchronous motor; Finite element analysis; Maxwell stress; Electromagnetic force; TORQUE; MINIMIZATION; DESIGN;

D O I：

10.1016/j.mechatronics.2010.09.005

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a finite element analysis of the cogging force generated by an array of linear synchronous motors (LSM) moving on a curvilinear track is presented. This system is under consideration as the driving system for the two main axes of the proposed Thirty Meter Telescope that will be built in Mauna Kea, Hawaii. The main objective of this work is the quantification of the effects of the curvilinear track of LSM arrays on the cogging force. The finite element analysis is carried out using planar cross sections, and the results found are used to find an approximate solution for the three-dimensional model. The results show that the presence of the curvilinear-configured track increases the cogging force of a single LSM significantly, while the presence of the array of LSMs interacts in limiting the increase in the cogging force. A geometric optimization in regards to the relative positions of the LSMs along the curvilinear tracks is subsequently carried out in order to reduce the total cogging force. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：116 / 124

页数：9

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