期刊
AUTOMATICA
卷 84, 期 -, 页码 221-226出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2017.04.048
关键词
Time-delay systems; Stability; Reciprocally convex inequality; Lyapunov-Krasovskii functional
资金
- Australian Research Council [DP160103567]
- Australian Research Council [DP160103567]
This paper is concerned with stability of a linear system with a time-varying delay. First, an improved reciprocally convex inequality including some existing ones as its special cases is derived. Compared with an extended reciprocally convex inequality recently reported, the improved reciprocally convex inequality can provide a maximum lower bound with less slack matrix variables for some reciprocally convex combinations. Second, an augmented Lyapunov Krasovskii functional is tailored for the use of a second-order Bessel Legendre inequality. Third, a stability criterion is derived by employing the proposed reciprocally convex inequality and the augmented Lyapunov Krasovskii functional. Finally, two well studied numerical examples are given to show that the obtained stability criterion can produce a larger upper bound of the time-varying delay than some existing criteria. (C) 2017 Elsevier Ltd. All rights reserved.
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