As opposed to previous works in the area, it is assumed here that all or some of the sampling function, the discrete-time controller, and the hold function are available for design. The solution is obtained by transforming the problem to discrete time using the well-known lifting technique. The procedure for doing this last step is central to the approach in this paper. Both new and revised solutions are presented in this paper. The solution to the H 2 problems is completely new.
Transparency pays in the form of clearer results.
49N10, 93B36 PII .