Stability analysis of switched systems with extended average dwell time

2017 ◽  
Vol 40 (5) ◽  
pp. 1425-1434 ◽  
Author(s):  
Qiang Yu ◽  
Yunfei Yin ◽  
Xudong Zhao
Keyword(s):  
Stability Analysis ◽  
Continuous Time ◽  
Switched Systems ◽  
Dwell Time ◽  
Average Dwell Time ◽  
The Other ◽  
Open Chain ◽  
Closed Chain ◽  
Special Cases ◽  
Stability And Stabilization

The problem of stability for switched systems with extended average dwell time (ADT) is investigated in both the continuous-time and discrete-time cases. By proposing three novel concepts of closed-chain, r-open-chain, and quasi-cyclic switching signals, stability and stabilization conditions of switched systems with ADT or mode-dependent ADT (MDADT) switching are obtained. This paper develops and enriches the existing results on stability under constrained switching, since the existing results based on both ADT and MDADT can be seen as the special cases of ours. On the other hand, the paper provides a solution to the open problem of how to obtain a tighter bound on ADT or MDADT. Finally, some comparisons between the existing results and ours show the superiority of the theoretical findings of this paper.

Stability and Stabilization of Heterogeneous Switched Systems with Mode-Dependent Average Dwell Time via Homogeneous Polynomial Lyapunov Functions Approach

2020 ◽  
Vol 29 (16) ◽  
pp. 2050258
Author(s):  
Shaohang Yu ◽  
Chengfu Wu ◽  
Liang Wang ◽  
Jia-Nan Wu
Keyword(s):  
Stability Analysis ◽  
Lyapunov Function ◽  
Switched Systems ◽  
Lyapunov Functions ◽  
Homogeneous Polynomial ◽  
Stability Property ◽  
Dwell Time ◽  
Average Dwell Time ◽  
Stability And Stabilization ◽  
The Stability

This work researches the problem of searching for multiple homogeneous polynomial Lyapunov functions (HPLFs) for heterogeneous switched linear systems. First, a nonconvex optimization condition is constructed to study the stability property of heterogeneous switched systems, where each Lyapunov function candidate reduces dimension to their corresponding matrix eigenvalue. Based on the stability analysis condition, a controller-dependently multiple HPLFs condition is introduced to determine controllers and explores locally minimum mode-dependent average dwell time (LMMDADT). Additionally, the existing properties condition and solvable properties condition of controllers are given in the form of HPLFs. At last, a practical example and a contrast example are both presented to show feasibility of the proposed results.

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