Title |
Stability of Interval Time-delayed Linear Systems using a Switched System Approach |
Authors |
김주경(Kim, Joo-Kyeong) ; 김진훈(Kim, Jin-Hoon) |
DOI |
https://doi.org/10.5370/KIEE.2013.62.5.673 |
Keywords |
Stability ; Interval time-delay ; Switched system ; PD-LKF ; LMI |
Abstract |
This paper considers the stability of linear systems having an interval time-varying delay using a switched system approach. The time-delay system is converted to the switched system equivalently, and then a stability criterion in the form of linear matrix inequality(LMI) is derived by using a parameter dependent Lyapunov-Krosovskii function(PD-LKF). In constructing a PD-LKF, the decomposition is employed for delay free intervals, and the reduction of conservatism is shown analytically as the number of decomposition increases. Finally, two well-known numerical examples are given to show the reduction of conservatism compared to the recent results. |