Differential Games for Weakly Coupled Large-Scale Linear Stochastic Systems with an H∞-Constraint

Abstract

A differential game approach for the finite-horizon stochastic control problem with an [Formula: see text]-constraint is considered for a class of large-scale linear systems. First, necessary conditions for the existence of a control strategy set are established by means of cross-coupled stochastic Riccati differential equations (CSRDEs). Second, an efficient design method to obtain a reduced-order parameter-independent approximate strategy set is proposed. Moreover, the performance degradation is estimated. Infinite-horizon case is also discussed. Finally, a numerical example is provided to demonstrate the effectiveness of the proposed design scheme.