Study on Sample Rate and Performance of a Networked Control System by Simulation

Fixing the sample rate is very significant for a networked control system (NCS), and there is no a directive way to make it. In the paper, a method is proposed which is simple and directive to obtain a sample rate in the networked control system (NCS).By analyzing the schedule of a NCS, the paper get a minimum sample rate of a closed-feedback control which meet the need of performance and schedule. In the paper, it also figures out how to get the maximum sample rate by analyzing the performance requirement. At last, the paper give a analysis the relationship among induce-delay, overshoot and sample rate which can prepare for further work like optimizing the sample rate, designing a predictor to forecast the delay, and studying the robustness of controller in order to design a good controller.