Improvement in both transient and steady-state responses in a sampled-data control system

This study discusses a design method for a sampled-data multi-rate control system in which the sampling interval of the plant output is an integer multiple of the hold interval of the control input. In this study, a pre-designed multi-rate control law is extended such that the sampled behavior is maintained. Using the extended control law, both the transient and steady-state intersample behavior can be redesigned independently of the sampled behavior. The effectiveness of the extended method is demonstrated through numerical examples.