منابع مشابه
Chemical Considerations on Passivity *
--It can be shown tha t the value o f the charge/ radius ratio o f metallic ions determines whether the metal on dissolut ion tends to become passive or not. Us ing this criterion it is possible to clarify the influence o f p H and electrode potential on the occurrence and breakdown of passivity. I N T R O D U C T I O N IN MANY cases a base metal is less reactive than would be expected from its...
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This paper presents the development of a Passivity-Based Controller (PBCr) from a FirstOrder-Plus-Dead-Time model of the process. This approach results in a fixed structure controller that depends on the characteristic parameters of the model. This allows a unique controller of adjustable parameters that can be used in several processes. Computer simulations on a nonlinear chemical process judg...
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The chemical stability of Si(111), terminated with bilayer AlSe and GaSe, upon exposure to atmosphere, N2 and O2 was investigated with core-level and valence band photoelectron spectroscopy. Si(111):GaSe and Si(111):AlSe both form stable, unreconstructed surfaces with no states in the silicon energy gap; their atomic structures are nearly identical. However, similarities in surface electronic a...
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In this paper, a new approach is developed for robust control of nonlinear chemical processes. The methodology proposed is based on passivity theory. Uncertainty and perturbations are taken into account in the stability analysis and controller synthesis such that the resulting closed-loop system can achieve better robustness and performance. The suggested passivity framework can deal with a lar...
متن کاملTheorizing passivity
process essentially is conservative and, in some discipline, produces a regression to some mean—all articles in a particular journal resemble each other. As a result, there is little innovation in the forms and contents of thinking and theorizing. Despite being in special institutional positions (variously theorized as gatekeepers or obligatory points of passage), few editors appear to allow mo...
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ژورنال
عنوان ژورنال: CORROSION ENGINEERING
سال: 1975
ISSN: 0010-9355,1884-1155
DOI: 10.3323/jcorr1974.24.8_417