Download e-book for kindle: Distributed-Order Dynamic Systems: Stability, Simulation, by Zhuang Jiao

By Zhuang Jiao

ISBN-10: 1447128516

ISBN-13: 9781447128519

Distributed-order differential equations, a generalization of fractional calculus, are of accelerating significance in lots of fields of technology and engineering from the behaviour of advanced dielectric media to the modelling of nonlinear platforms.
This short will increase the toolbox on hand to researchers drawn to modeling, research, regulate and filtering. It includes contextual fabric outlining the development from integer-order, via fractional-order to distributed-order structures. balance concerns are addressed with graphical and numerical effects highlighting the basic adjustments among constant-, integer-, and distributed-order remedies. the facility of the distributed-order version is proven with paintings at the balance of noncommensurate-order linear time-invariant structures. regularly occurring functions of the distributed-order operator stick to: sign processing and viscoelastic damping of a mass–spring manage.
A new basic method of discretization of distributed-order derivatives and integrals is defined. The short is rounded out with a attention of most probably destiny learn and purposes and with a few MATLAB® codes to lessen repetitive coding projects and inspire new employees in distributed-order systems.

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Extra resources for Distributed-Order Dynamic Systems: Stability, Simulation, Applications and Perspectives

Example text

2, and in order to extend a and b to the whole real domain, we can use the following property. 5 + b − a ≤ 1. 5, 1]. b 1 a s α dα, where Lastly, it can be shown in both time and frequency domains that the distributedorder integrator/differentiator exhibits some intermediate properties among the integer-order and fractional-order integrators/differentiators. In the frequency domain, for example, Fig. 8479 . 8479 was constructed by searching the best fit to the magnitude of the distributed-order integrator 1 −α 1 dα.

B 1 1 −1 + · · · + s −N )s −[a] a−[a] −(N +[a]+1) · b−(N +[a]+1) a s α dα = (s a−[a]−1 s α dα + s a−[a]−1 1 dα, where b − a > 1, N = [b − a] and [∗] denotes the integer part of ∗. sα b˜ α b 1 ˜ a = 1 − b˜ and b = 1 − a. ˜ < b, ˜ a˜ s dα = s a s α dα, where a b w(α) The distributed integrator/differentiator a s α dα, where w(α) is a piecewise (A) s c (B) (C) (D) (E) function, can be converted to the summation of uniformly distributed integrators/ differentiators. 2 Any distributed-order integrator/differentiator can be composed by the distributed-order integrator for 0 ≤ a < b ≤ 1, integrator 1s and differentiator s.

3. 2 For fractional-order system described by 0 Dt i x(t) = Ax(t) + Bu(t) (i = 1, 2), the stable boundary is defined as lβi := lai lbi , where lai and lbi are symmetrical with respect to the real axis, and lai is defined as: lai := x + i y x = ωβi cos βi βi π, y = ωβi sin π, ω ∈ [0, ∞). 2 2 32 3 Noncommensurate Constant Orders as Special Cases of DOLTIS Fig. 4 Fig. 1 10 0 10 1 10 0 10 10 Frequency (Hz) 10 2 10 3 10 4 2 10 3 10 4 −20 −40 −60 −80 −1 10 1 lβ1 and lβ2 are also plotted in Figs. 2. It can be easily seen from Figs.

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Distributed-Order Dynamic Systems: Stability, Simulation, Applications and Perspectives by Zhuang Jiao


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