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題名 | Stochastic Observability of Linear Systems under Access Constraints= |
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作者 | Zhang, Hui; Tian, Yin; Gao, Lixin; |
期刊 | Asian Journal of Control |
出版日期 | 20150100 |
卷期 | 17:1 2015.01[民104.01] |
頁次 | 頁64-73 |
分類號 | 448.942 |
語文 | eng |
關鍵詞 | Stochastic observability; Access sequence; Mutual information; Linear system; |
英文摘要 | Using information theoretic measures, this paper investigates the observability of discrete-time linear stochastic systems which have insufficient communication channels to accommodate all the sensors simultaneously. The communication status is described by a binary-valued access sequence. For time-varying systems, it is proved that within a finite time interval the stochastic observability is preserved by an access sequence which is combined by individually designed sub sequences corresponding to certain sub intervals. For the time-invariant case, further results are given along with two periodic access strategies. The equivalence between stochastic observability of the zero order holder (ZOH) inclusive case and that of the non-ZOH inclusive case is also discussed. Simulations illustrate our conclusion which covers some existing results. |
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