New PDF release: Advances in the Theory and Applications of Non-integer Order

By Tadeusz Kaczorek (auth.), Wojciech Mitkowski, Janusz Kacprzyk, Jerzy Baranowski (eds.)

ISBN-10: 331900932X

ISBN-13: 9783319009322

ISBN-10: 3319009338

ISBN-13: 9783319009339

This quantity offers quite a few features of non-integer order platforms, often referred to as fractional platforms, that have lately attracted an expanding realization within the medical group of platforms technological know-how, utilized arithmetic, keep watch over thought. Non-integer structures became correct for lots of fields of technology and expertise exemplified via the modeling of sign transmission, electrical noise, dielectric polarization, warmth move, electrochemical reactions, thermal strategies, acoustics, and so on. The content material is split into six elements, each of which considers one of many presently proper difficulties. within the first half the belief challenge is mentioned, with a unique concentrate on optimistic structures. the second one half considers balance of definite sessions of non-integer order structures with and with no delays. The 3rd half is targeted on such very important features as controllability, observability and optimization in particular in discrete time. The fourth half is targeted on allotted platforms the place non-integer calculus results in new and engaging effects. the following half considers difficulties of recommendations and approximations of non-integer order equations and platforms. the ultimate and so much huge half is dedicated to functions. difficulties from mechatronics, biomedical engineering, robotics and others are all analyzed and solved with instruments from fractional structures. This quantity got here to fruition due to excessive point of talks and fascinating discussions at RRNR 2013 - fifth convention on Non-integer Order Calculus and its purposes that came about at AGH college of technological know-how and know-how in Kraków, Poland, which was once prepared by way of the college of electric Engineering, Automatics, desktop technological know-how and Biomedical Engineering.

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Extra resources for Advances in the Theory and Applications of Non-integer Order Systems: 5th Conference on Non-integer Order Calculus and Its Applications, Cracow, Poland

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Then one can choose δ = δ( ) such Let > 0 and X ∈ RN : X < that ϕ(δ) < φ( ). Since V is positive definite, we have φ( X(n) ) ≤ V (n, X(n)) for any solution X(·) of (12) with X0 < δ( ). 48 M. Wyrwas et al. From (17) we get n−1 V (j) ≤ 0 V (n, X(n)) − V (0, X(0)) = j=0 for all n ∈ N1 and for n = 0 we have V (n, X(n)) = V (0, X(0)). Consequently, φ( X(n) ) ≤ V (n, X(n)) ≤ V (0, X(0)) ≤ ϕ( X(0) ) = ϕ( X0 ) < ϕ(δ) < φ( ) . Since φ is class-K, X(n) < for all n ∈ N0 . Hence the trivial solution of of (12) (or equivalently system (7)) is uniformly stable.

A1 ( z − gα ) + a0 . (37) 24 Ł. Sajewski The procedure of reduction will be shown on the following simple example. There is given strictly proper transfer function of the fractional system in the form Tsp ( z ) = bˆ1 z + bˆ0 + bˆ−1 z −1 + bˆ− 2 z −2 , z + aˆ1 z + aˆ0 + aˆ −1 z −1 + aˆ − 2 z − 2 + aˆ − 3 z − 3 + aˆ − 4 z − 4 2 (38) find its fractional order α and transfer function (37). In this case n = 2 and L = 2. Without loss of generality we may assume the matrix A is in the canonical Frobenius form [7, 14, 15] 1   0 A= (39) .

A1λ + a0 (13) n Remark 4. The transfer function (9) and (10) will be called the L-bounded transfer function and (13) the general one. Taking under consideration Remark 3 in practical problems it is assumed that number of delays is bounded by some natural number L. In that case the fractional system (1) with given length of practical implementation (L = k) is practically stable if and only if the characteristic polynomial meet the condition  w ( z ) = det  I n z − Aα − I n  L  j =1   c j (α ) z − j  ≠ 0, z ≥1.

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Advances in the Theory and Applications of Non-integer Order Systems: 5th Conference on Non-integer Order Calculus and Its Applications, Cracow, Poland by Tadeusz Kaczorek (auth.), Wojciech Mitkowski, Janusz Kacprzyk, Jerzy Baranowski (eds.)


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