A Comparison of H-Infinity With Kalman Filtering in Parameter Identification
The authors perform a thorough investigation of the extended H-infinity and Kalman filters based on results from stiffness estimation experiments. The paper uses the time-varying tolerance method to t...
The authors perform a thorough investigation of the extended H-infinity and Kalman filters based on results from stiffness estimation experiments. The paper uses the time-varying tolerance method to t...
Modeling of Web Slip on a Roller and Its Effect on Web Tension Dynamics
This paper considers the effect of web slip over the rollers on the span tension dynamics. In classical development of the web span tension dynamics, it is assumed that there is strict adhesion betwee...
This paper considers the effect of web slip over the rollers on the span tension dynamics. In classical development of the web span tension dynamics, it is assumed that there is strict adhesion betwee...
Modeling, Parameter Identification, and Validation of Reactant and Water Dynamics for a Fuel Cell Stack
Paper no. IMECE2005-81484 pp. 1177-1186 (10 pages)
doi:10.1115/IMECE2005-81484
ASME 2005 International Mechanical Engineering Congress and Exposition
(IMECE2005)
November 5 – 11, 2005 , Orlando, Florida, USA Sponsor: Dynamic Systems and Control Division
November 5 – 11, 2005 , Orlando, Florida, USA Sponsor: Dynamic Systems and Control Division
Dynamic Systems and Control, Parts A and B
ISBN: 0-7918-4216-9
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This paper describes a simple two-phase flow dynamic model that predicts the experimentally observed temporal behavior of a proton exchange membrane fuel cell stack and a methodology to experimentally identify tunable physical parameters. The model equations allow temporal calculation of the species concentrations across the gas diffusion layers, the vapor transport across the membrane, the degree of flooding in the electrodes, and then predict the resulting decay in cell voltage over time. A nonlinear optimization technique is used for the identification of two critical model parameters, namely the membrane water vapor diffusion coefficient and the thickness of the liquid water film covering the fuel cell active area. The calibrated model is validated for a 24 cell, 300 cm2 stack with a supply of pressure regulated pure hydrogen.
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