Cogging force analysis of linear motor arrays driving the thirty meter telescope

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DOIResolve DOI: http://doi.org/10.1109/MWSCAS.2011.6026557
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TypeArticle
Proceedings titleThe 54th IEEE International Midwest Symposium on Circuits and systems : IEEE MWSCAS 2011 : August 7-10, 2011, Yonsei University, Seoul, Korea.
Series titleMidwest Symposium on Circuits and Systems conference proceedings : MWSCAS; no. 6026557
Conference54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011, 7 August 2011 through 10 August 2011, Seoul
ISSN1548-3746
ISBN978-1-61284-855-6
978-1-61284-856-3
Article number6026557
SubjectApproximate solution; Cogging force; Cross section; Driving systems; Linear synchronous motors; Relative positions; Thirty Meter Telescope; Three-dimensional model; Electric network analysis; Optical telescopes; Synchronous motors; Telescopes; Three dimensional; Finite element method
AbstractA finite element analysis of the cogging force generated by an array of linear synchronous motors moving on a curvilinear track is presented. This system is under consideration as the driving system for the two main axes of the 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 on the motors 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 significantly increases the cogging force of a single motor, while the presence of several motors interacts in limiting the increase in the cogging force. Finally, in order to reduce the total cogging force, an optimization in regards to the relative positions of the motors along the tracks is carried out. © 2011 IEEE.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Herzberg Institute of Astrophysics
Peer reviewedYes
NPARC number21271923
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Record identifierf7884663-32ae-41bc-8bd9-ff12d10fd5e7
Record created2014-05-06
Record modified2016-05-09
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