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A new method for approximating fractional derivatives: application in non-linear control
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Resumo(s)
The theory of fractional calculus goes back to the beginning of the theory of differential calculus, but its application received attention only recently. In the area of automatic control some work was developed but the proposed algorithms are still in a research stage. This paper discusses a novel method, with two degrees of freedom, for the design of fractional discrete-time derivatives. The performance of several approximations of fractional derivatives is investigated in the perspective of nonlinear system control.
Descrição
Palavras-chave
Fractional calculus Control Discrete time