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  4. System Identification of Small-power Proton Exchange Membrane Fuel Cell System
 
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System Identification of Small-power Proton Exchange Membrane Fuel Cell System

Date Issued
2006
Date
2006
Author(s)
Liu, Ming-Hao
DOI
en-US
URI
http://ntur.lib.ntu.edu.tw//handle/246246/61267
Abstract
Based on electro-chemical reactions, the small-power fuel cell system is simplified as a coupled multi-input and multi-output system. Utilizing the pseudo random binary sequence as the input and ARMAX as the model, system identification is performed at different operating points. Both fixed-valued parameters and time-varying parameters are used in ARMAX in order to find a suitable model. According to the identification result, ARMAX models with fixed-valued parameters can not describe the system dynamics suitably, while models with time-varying parameters can. System dynamics are also proven to be insensitive to temperature changes between 35 and 45°C. It is also shown that when the hydrogen stoichiometry is over 1.2, fast changes of the hydrogen flow rate does no influence on the fuel cell system performance.
Subjects
質子交換膜燃料電池
燃料電池
系統識別
疑似白色二值信號
線性迴歸模型
proton exchange membrane fuel cell
PEM
system identification
PRBS
ARMAX
Type
thesis
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ntu-95-R93522803-1.pdf

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(MD5):5d0cf539b532503d25e7f396d7e467fe

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