Add-On Type Data-Driven Ripple-Free Dual-Rate Control Design Based on the Null Space of Steady-State Step Responses

In the present study, a data-driven ripple-free design is proposed for dual-rate sampled-data control system in which sampling interval of plant output longer than holding input. The objective study to improve steady-state intersample response without changing sampled and using model. To achieve directly from controlled data, an add-on input based on null space step responses existing used. open-loop or closed-loop obtain assumed be stable. two-degree-of-freedom given that redesigns independently response. numerical example, method applied linear time-invariant single-input single-output stable system, where ripples are eliminated independent sample steady state.