Comments on ?‚??Design of delayed control systems using Zakian´s framework?‚??

Comments are offered on a recent paper by A.T. Bada. It is shown that the responses of a predictor control system may be improved simply and systematically by the technique of deliberate mismatch of the plant model. This example supports the view that O.J.M. Smith´s method, carefully extended, offers better performance than suggested in the paper.