Necessary and Sufficient Conditions for Optimal Stabilization of Quasi-Linear Stochastic Systems

A wide class of admissible control strategies that guarantee the mean-square stabilization of a stochastic system is considered. Necessary and sufficient conditions for the opti-mality of a linear time-invariant controller are established. The difference between the stated problem and the optimal control problem on an infinite time interval is demonstrated. The obtained optimality conditions are illustrated by the example of stabilization of an...