نتایج جستجو برای: s fuzzy model
تعداد نتایج: 2766560 فیلتر نتایج به سال:
this paper proposes a new mathematical model for the integrated procurement-production-distribution problem of a fuzzy mixed integer linear programming (fmilp) type. considering the uncertainty in real problems, a number of parameters such as demand, capacity, and cost where their values are not available or known precisely, have been considered as trapezoidal fuzzy numbers. to solve fuzzy mixe...
This paper develops a general analysis and design theory for nonlinear time-varying systems represented by impulsive T-S fuzzy control model, which extends conventional T-S fuzzy model. In the proposed, model impulse is viewed as control input of T-S model, and impulsive distance is the major controller to be designed. Several criteria on general stability, asymptotic stability, and exponential...
This paper deals with the fuzzy based H∞ control problem for time-delay affine Takagi-Sugeno (T-S) fuzzy models. A class of nonlinear time-delay systems is approximated by a time-delay affine T-S fuzzy model in this paper. Based on LyapunovRazumikhin theorem and S-procedure, the stability and stabilization problems are solved by employing a Parallel Distributed Compensation (PDC) type H∞ fuzzy ...
Abstract The output feedback stabilization for discrete nonlinear systems is studied based on T-S fuzzy model in this paper. Firstly, a concept of the efficient mutual non-neighboring rule group (EMNNRG) is presented. Secondly, by using the scheme of parallel distributed compensation (PDC) and the piecewise fuzzy Lyapunov function, the stability of the closed-loop discrete T-S fuzzy control sys...
This paper addresses the criterion of delay-dependent stability for nonlinear systems with time-delays which can be represented by TakagiSugeno (TS) fuzzy model with time-delays. Based on Leibniz-Newton formula, the e¤ect of states and the delay states to the stability is considered to construct a Lyapunov functional and to form some special equations, which facilitate proposing a new delay-d...
Time-dependent hydration process of Portland cement presents a complex system with several uncertainties. A presented four-parametric affinity hydration model captures well the hydration kinetics when three parameters are treated as fuzzy numbers. The equations for the fuzzy affinity hydration model are derived using Zadeh’s extension principle, which allows for simplifying calculations to obta...
The Black–Scholes Option pricing model (OPM) developed in 1973 has always been taken as the cornerstone of option pricing model. The generic applications of such a model are always restricted by its nature of not being suitable for fuzzy environment since the decision-making problems occurring in the area of option pricing are always with a feature of uncertainty. When an investor faces an opti...
abstract in today's competitive business environment, intellectual capital management is widely considered as the main factor in order to gain and maintain organization competitive advantage. the main purpose of this paper is presenting a model to evaluate intellectual capital capacity in organizations. in this regard, first by the survey of the related literature, nine criteria of the int...
This article proposes a design method for producing H control performance for structural systems using the Tagagi-Sugeno (T-S) fuzzy model. A structural system with a tuned mass damper is modeled using a T-S type fuzzy model. Using the parallel distributed compensation (PDC) scheme, we design a nonlinear fuzzy controller for the tuned mass damper system. A sufficient stability condition for the...
شناسایی و مدلسازی یک لوپ صنعتی واقعی در این پروژه انجام شده است.ابتدا شناسایی به روش arx انجام گردیده که به علت عدم مطلوب بودن نتایج با استفاده از روش multiple model به نواحی قطعه ای خطی تبدیل گردیده و برای هر ناحیه شناسایی به روش arx انجام شده است.پس از ترکیب نواحی،برای انتخاب اینکه در هر زمان کدام ناحیه خروجی مورد نظر راتولیدکند.از توابع عضویت فازی استفاده شده است.برای طراحی کنترلر ابتدا به و...
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