It is necessary for us to study the existence and controllability of the solution of stochastic differential inclusions and the existence of periodic solutions for functional differential equations.
因此，非常有必要对随机泛函微分包含解的存在性，可控性和泛函微分方程周期解的存在性问题进行研究。
2
Exact controllability of stochastic control system with control energy constraint is concerned.