نتایج جستجو برای: fuzzy linear equation system

تعداد نتایج: 2788331  

Journal: :iranian journal of fuzzy systems 2015
p. balasubramaniam -pour l. jarina banu

this paper is pertained with the problem of admissibility analysis of uncertain discrete-time nonlinear singular systems by adopting the state-space takagi-sugeno fuzzy model with time-delays and norm-bounded parameter uncertainties. lyapunov krasovskii functionals are constructed to obtain delay-dependent stability condition in terms of linear matrix inequalities, which is dependent on the low...

Journal: :computational methods for differential equations 0
m. javidi university of tabriz

in this paper, the chebyshev spectral collocation method(cscm) for one-dimensional linear hyperbolic telegraph equation is presented. chebyshev spectral collocation method have become very useful in providing highly accurate solutions to partial differential equations. a straightforward implementation of these methods involves the use of spectral differentiation matrices. firstly, we transform ...

A. Hashemi T. Allahviranloo,

In this paper, we investigate the general fuzzy linear system of equations.  The  main aim of this paper is based on the embedding approach. We find the necessary and sufficient conditions for the existence of fuzzy solution of the mentioned systems.  Finally, Numerical examples are presented to more illustration of the proposed model.

A.H Sarfaraz M.B Aryanezhad S Alizadeh Noghani S.J Sadjadi

Classical deterministic inventory models consider the demand rate to be either constant or time-dependent but independent from the stock status. However, for a certain type of inventory, the demand rate may be in-fluenced by the stock level. Also in many real-life problems, some products such as fruits, vegetables, phar-maceuticals and volatile liquids continuously deteriorate to evaporation, o...

2007
Xilan Tian Xuesong Wang Yuhu Cheng

This paper mainly deals with the controller design for a class of networked control system (NCS) with the presence of networkinduced delay and data packet dropout. Aiming at the stochastic and time-varying characteristics of delay and dropout, a NCS model with uncertain linear parameters was established by converting the uncertainties of delay and dropout into the uncertainties of the coefficie...

Journal: :journal of computer and robotics 0
ahmad fakharian department of electrical and computer engineering, islamic azad university, qazvin branch, qazvin, iran department of computer science and electrical engineering, control engineering group, luleå university of technology, luleå, sweden

this paper undertakes the synthesis of a logic-based switching h2/h∞ state-feedback controller for continuous-time lti singular perturbation systems. our solution achieves a minimum bound on the h2 performance level, while also satisfying the h∞ performance requirements. the proposed hybrid control scheme is based on a fuzzy supervisor managing the combination of two controllers. a convex lmi-b...

Journal: :Journal of Mathematics and Computer Science 2011

Journal: :iranian journal of optimization 2009
t. allahviranloo l. jamshidi

adomian decomposition method has been applied to solve many functional equations so far. in this article, we have used this method to solve the fuzzy differential equation under generalized differentiability. we interpret a fuzzy differential equation by using the strongly generalized differentiability. also one concrete application for ordinary fuzzy differential equation with fuzzy input data...

Journal: :iranian journal of optimization 0
s.h nasseri department of mathematics, university of mazandaran, babolsar, iran e. darban jafari department of mathematics, university of mazandaran, babolsar, iran. r. chameh department of mathematics, university of mazandaran, babolsar, iran.

many ranking methods have been proposed so far. however, there is yet no method that can always give a satisfactory solution to every situation; some are counterintuitive, not discriminating; some use only the local information of fuzzy values; some produce different ranking for the same situation. for overcoming the above problems, we propose a new method for ranking fuzzy quantities based on ...

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