A Study of Decoupling with Skeleton Matrix in Two-Degree-of-Freedom Generalized Minimum Variance Control

摘要

There are many multi-input multi-output (MIMO) systems in chemical plants, and they have multiple time delays of different length in each input and output pair. This paper explains a two-degree-of-freedom (2DOF) control system based on generalized minimum variance control (GMVC) for MIMO systems. It can improve the tracking performance with respect to the reference signals and the response properties for the disturbance. The states between the sampling period can be expressed by using the modified z transform to take account of multiple time delays. Additionally, a tracking controller is designed to decouple the plant.