Stability of Model-Based Networked Control System with Quantized Feedback

Stability of model-based networked control systems is considered in view of the quantization effect which exists generally in networked setting. It is to be noted that the stability rests with the quantization errors at every transmission time. For different initial quantization errors, necessary and sufficient conditions for system to be globally exponentially stable or the stable regions of the system are presented. The results provide a way to establish the relationship between quantization, update time, modeling error and system stability. Simulation examples are used to illustrate the main results.