منابع مشابه
Controllability of Strongly and Weakly Dependent Siphons under Disturbanceless Control
Li and Zhou propose to add monitors Vs to elementary siphons S only while controlling the rest of dependent siphons—important for large systems but far from being maximally permissive. The control policy for weakly dependent siphons (WDS) is rather conservative due to some negative terms in the controllability. We show that this is no longer true as can be shown that it has the same controllabi...
متن کاملNanoparticle - laden tubeless and open siphons †
Tubeless and open siphons operate without conduits, in the open, supported only by extensional stresses. Here, we demonstrate that the addition of silica nanoparticles in modest concentrations (on the order of 1% by weight) to an aqueous Poly(ethylene oxide) (PEO) solution of a moderately low concentration (0.5% by weight) has a dramatic effect on the power of the siphon as well as on the abili...
متن کاملSiphons in chemical reaction networks.
Siphons in a chemical reaction system are subsets of the species that have the potential of being absent in a steady state. We present a characterization of minimal siphons in terms of primary decomposition of binomial ideals, we explore the underlying geometry, and we demonstrate the effective computation of siphons using computer algebra software. This leads to a new method for determining wh...
متن کاملA Fast Method for Extracting all Minimal Siphons from Maximal Unmarked Siphons of a Petri Net
In this paper, a fast method named algorithm 2 is proposed to extract all minimal siphons from maximal unmarked siphons obtained by the MIP-based deadlock detection method. Redundant computation is the major disadvantage of an existing method named algorithm 1 and it greatly decreases the computational efficiency of minimal siphons. In order to resolve this problem, the proposed method improves...
متن کاملA survey of siphons in Petri nets
Petri nets have gained increasing usage and acceptance as a basic model of asynchronous concurrent systems since 1962. As a class of structural objects of Petri nets, siphons play a critical role in the analysis and control of systems modeled with Petri nets. This paper surveys the state-of-the-art siphon theory of Petri nets including basic concepts, computation of siphons, controllability con...
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ژورنال
عنوان ژورنال: The International Journal of Advanced Manufacturing Technology
سال: 2009
ISSN: 0268-3768,1433-3015
DOI: 10.1007/s00170-009-1968-0