chapter  4
50 Pages

Optimal Control of Unknown Quantized Network Control Systems

In traditional feedback control systems, it is quite common to assume that the measured signals are transmitted to the controller and the control inputs are delivered back to the plant with arbitrarily high precision. However, in practice, the interface between the plant and the controller is often connected via analog-to-digital (A/D) and digital-to-analog (D/A) devices, which quantize the signals. In an NCS, the signals are quantized prior to transmission onto the communication network. As a result, the quantized networked control system (QNCS) has attracted a great deal of attention from control researchers since the quantization process always existed in computer-based control systems but now it exists in a communication network within the feedback loop.