全空间中带位势热方程的采样时间最优控制

Sampled-Data Time Optimal Control for Heat Equation with Potential in R^(n)

该文考虑全空间中带常值位势的热方程的采样时间最优控制问题,给出了一定条件下时间最优控制的存在性和最小范数时间最优控制满足的Pontryagin最大值原理.为得到时间最优控制的存在性,该文建立了新的能观不等式,通过该不等式得到控制系统的采样渐近零能控,并结合Fenchel对偶理论对实现渐近零能控的控制的最小代价进行了刻画.

In this paper,the sampled-data time optimal control problem of heat equation with constant potential in whole space is considered.We establish the existence of time optimal control under certain conditions and the Pontryagin's maximum principle that time optimal control with minimal norm satisfies.In order to obtain the existence of time optimal control,a new observability inequality is established.The null approximate controllability of the sampled-data control system is obtained by using the observability inequality,and the minimum cost to achieve the null approximate controllability is characterized by Fenchel duality theory.