2007, Volume 9, Issue 4
Strategic Study of CAE >> 2007, Volume 9, Issue 4
Study on Temperature Control of Trace ContaminantControl Subassembly in Manned Spacecraft
Haiyan County, Zhejiang Province, 314300, China
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Abstract
The catalytic oxidizer assembly(COA)is an important part of the trace contaminant control subassembly in manned spacecraft. Temperature control in COA via a new self-tuning fuzzy logical controller (FLC)is analyzed in this paper. The new tuning method applies the bang-bang on-line tuned method to the design of the self-tuning FLC for obtaining the system parameters. On the basis of these parameters, the input and output scaling factors are calculated with simple tunable formulas. Then the proposed self-tuning FLC is realized by combining the scaling factors and the normal look-up table. It can realize self-tuning parameters, and simplify the design. Simulation results show that the proposed self-tuning FLC is fit for controlling the temperature of COA and isn't sensitive to parameter changes.
Keywords
manned spacecraft ; catalytic oxidizer ; temperature control ; fuzzy control ; self-tuning
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