Some results on the controllability of forward stochastic heat equations with control on the drift
Some results on the controllability of forward stochastic heat equations with control on the drift
复制标题
漂移控制下正向随机热方程可控性的一些结果
DOI:
10.1016/j.jfa.2010.10.018
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发表时间:
2011-02
影响因子:
1.7
通讯作者:
Lü, Qi
中科院分区:
文献类型:
--
作者:
Lü, Qi
In this paper, we establish the null/approximate controllability for forward stochastic heat equations with control on the drift. The null controllability is obtained by a time iteration method and an observability estimate on partial sums of eigenfunctions for elliptic operators. As a consequence of the null controllability, we obtain the observability estimate for backward stochastic heat equations, which leads to a unique continuation property for backward stochastic heat equations, and hence the desired approximate controllability for forward stochastic heat equations. It deserves to point out that one needs to introduce a little stronger assumption on the controller for the approximate controllability of forward stochastic heat equations than that for the null controllability. This is a new phenomenon arising in the study of the controllability problem for stochastic heat equations.
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DOI:
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期刊:
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