ETA-2-OPTIMAL SAMPLED-DATA CONTROL

This paper considers the H2-optimal control of continous-time linear time-invariant systems by sampled-data controllers. Two different solutions, state space and operator theoretic, are given. In both cases, the H2 sampled-data problem is shown to be equivalent to a certain discrete-time H2 problem. Other topics investigated include input-output stability of sampled-data systems, performance recovery in digital implementation of analog controllers, and sampled-data control of systems with possibly multiple-time delays.