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Stabilization of uncertain fractional order system with time‐varying delay using BMI approach
Author(s) -
He BinBin,
Zhou HuaCheng,
Kou ChunHai,
Chen YangQuan
Publication year - 2021
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.2193
Subject(s) - control theory (sociology) , mathematics , quadratic equation , nonlinear system , fractional calculus , bilinear interpolation , matrix (chemical analysis) , linear matrix inequality , order (exchange) , mathematical optimization , computer science , control (management) , finance , artificial intelligence , economics , statistics , physics , geometry , materials science , quantum mechanics , composite material
This paper considers the systematic design of robust stabilizing state feedback controllers for fractional order nonlinear systems with time‐varying delay being possibly unbounded. By using the fractional Halanay inequality and the Caputo fractional derivative of a quadratic function, stabilizability conditions expressed in terms of bilinear matrix inequalities are derived. The controllers can then be obtained by computing the gain matrices. In order to derive the gain matrices, two algorithms are proposed by using the existing computationally linear matrix inequality techniques. Two numerical examples with simulation results are provided to demonstrate the effectiveness of the obtained results.