Abstract: The suboptimal control of a linear system can be expressed in terms of the system parameters by a simple, explicit formula. At the same time, the suboptimal state (trajectory) is obtained.

Abstract: It is well known since many years ago that for the linear time-varying system e = Ae + B (t)/spl theta/, /spl theta/ = -B(t)/sup T/e with A Hurwitz, and B(t) bounded and globally Lipschitz, ...