| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系 === 85 === In this thesis, the high temperature superconducting materials
(HTS) is used to design a magnetic levitation transportation
system. Recently, with the advance of materials processing
techniques, the very large singlegrained Y-Ba-Cu-O (YBCO)
superconductor can be produced by Top-Seedingand Melt-Texturing(
TSMT) method. The superconductor is used with Meissnereffect to
make the designed magnetic suspension system containing liquid
nitrogen suspended stably. The transportation system can be
supplied tothe semiconductor manufacturing process to move
objects, because it has the advantage of no noise and dust.
Since the parameters of the suspension system always change with
time due to the evaporation of liquid nitrogen, the author use
fuzzy logicalalgorithm to control the magnetic levitation system
to overcome such aproblem. In the position control, the author
adapt and compare the responses of PD control and fuzzy logical
control. In the speed control, the author use PID control to
control the speed-feedback system.
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