نتایج جستجو برای: fuzzy polynomials

تعداد نتایج: 127443  

2005
Serge B. Provost

It is often the case that the exact moments of a statistic of the continuous type can be explicitly determined, while its density function either does not lend itself to numerical evaluation or proves to be mathematically intractable. The density approximants discussed in this article are based on the first n exact moments of the corresponding distributions. A unified semiparametric approach to...

Journal: :Fundam. Inform. 2012
Nikita Gogin Mika Hirvensalo

We give two recursive expressions for both MacWilliams and Chebyshev matrices. The expressions give rise to simple recursive algorithms for constructing the matrices. In order to derive the second recursion for the Chebyshev matrices we find out the Krawtchouk coefficients of the Discrete Chebyshev polynomials, a task interesting on its own.

2008
Hendrik DE BIE

We introduce the so-called Clifford–Hermite polynomials in the framework of Dunkl operators, based on the theory of Clifford analysis. Several properties of these polynomials are obtained, such as a Rodrigues formula, a differential equation and an explicit relation connecting them with the generalized Laguerre polynomials. A link is established with the generalized Hermite polynomials related ...

Journal: :Eng. Appl. of AI 2005
Hazem N. Nounou Kevin M. Passino

In direct adaptive control, the adaptation mechanism attempts to adjust a parameterized nonlinear controller to approximate an ideal controller. In the indirect case, however, we approximate parts of the plant dynamics that are used by a feedback controller to cancel the system nonlinearities. In both cases, ‘‘approximators’’ such as linear mappings, polynomials, fuzzy systems, or neural networ...

Journal: :CSSP 2016
Qi Zhou Ziran Chen Hak-Keung Lam

This paper is concerned with the stabilization problem for nonlinear systems. A new polynomial-approximation-based approach for modeling nonlinear systems is first proposed. The nonlinearity is approximated by polynomials and the approximation errors are treated as modeling uncertainties. The original nonlinear systems are converted into polynomial systems with modeling uncertainties. In order ...

Some integral properties of zonal spherical functions, hypergeometric functions and invariant polynomials are studied for real normed division algebras.

In this paper, we introduce hybrid of block-pulse functions and Bernstein polynomials and derive operational matrices of integration, dual, differentiation, product and delay of these hybrid functions by a general procedure that can be used for other polynomials or orthogonal functions. Then, we utilize them to solve delay differential equations and time-delay system. The method is based upon e...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی و مهندسی 1389

در این پروژه برای اولین بار بهینه سازی بهنگام توابع عضویت فازی در حین عملکرد موتور dc انجام گرفته است. این بهینه سازی توسط الگوریتم فیلترکالمن توسعه یافته و بر اساس خطای لحظه ای سرعت، صورت گرفته است. بطوریکه کارایی کنترلر در کنترل سرعت موتور افزایش می یابد. درواقع فیلتر کالمن شکل ایده آل و مناسب توابع عضویت کنترل کننده fuzzy pid را برای گام بعدی از زمان، براساس حالت کنونی، خطای سرعت کنونی و اطل...

1996
Riccardo Poli Manfred Kerber

Minimal Polynomial Logic (MPL) is a generalisation of classical propositional logic which allows truth values in the continuous interval 0; 1] and in which propositions are represented by multi-variate polynomials. In previous work 7] we have introduced some properties of MPL and shown that it has two possible semantics: a) it can be considered as a logic for expressing, handling and computing ...

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