Global Practical Tracking for a Class of Switched Nonlinear Systems with Quantized Input and Output via Sampled-data Control

In this paper, we study the global practical output tracking problem for a class of switched nonlinear systems via sampled-data output feedback control. Both the input signal and the output signal are quantized for the sake of less communication burden. The Filippov solution and differential inclusion are adopted to analyze the resulting discontinuous system. Accordingly, an observer is designed to estimate the unmeasurable states at the sampling points. Then, a linear sampled-data output feedback controller is designed with a proper choice of the sampling period, the quantization parameter and the design parameters. Finally, a numerical example and a practical example are presented to verify the effectiveness of the proposed scheme.