Modeling and Stability Analysis of Multi-rate MIMO Networked Control Systems with Output Feedback

A new kind of multi-rate multi-input & multi-output networked control system, in which each output signal of object controlled is sampled at different period and then sent to a single controller through a network, and also each output signal of the controller is sampled at different period and then sent to actuators through the network, is studied in this paper. Its model with the maximum network-induced delay being smaller than one sample period is set up. Based on estimation theorem of feature value from perturbation theory, the sufficient condition subject to the asymptotic stability of the multi-rate multi-input & multi-output networked control system is derived.