Relationships between asymptotic stability and exponential stability of positive delay systems
Relationships between asymptotic stability and exponential stability of positive delay systems
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正时滞系统渐近稳定性与指数稳定性的关系
DOI:
10.1080/03081079.2012.737324
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发表时间:
2013-02
影响因子:
2
通讯作者:
James Lam
中科院分区:
文献类型:
--
作者:
Xingwen Liu;James Lam
This paper explores the relations between asymptotic stability and exponential stability of continuous-time and discrete-time positive systems with delay. A system is said to be positive if its state and output are non-negative whenever the initial condition and input are non-negative. Two results are obtained. First, if a positive system is asymptotically stable for all bounded (further continuous, for continuous-time systems) time-varying delays, then it is exponentially stable for all such delays. In particular, if a positive system is asymptotically stable for a given constant delay, then it is exponentially stable for all constant delays. Second, if the involved delays are unbounded, then the positive system may be not exponentially stable even if it is asymptotically stable.
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