Analysis And Design Of Control Systems Considering Quantizer

Quantization problem has been an important research area for long time. Due to the improvement of digital hardware equipment and development of networked control system(NCS),Quantization problem research has been focused on at this moment. Particularly in the research of NCS, due to the Bandwidth constraints, it is necessary to study the performance of the control system considering quantizer. And it is not so much attention on quantization in domestic. So the analysis and design of control system considering quantizer is studied in this paper.Seeing the quantizer as nonlinear equipment is used to study the quantization problem. Firstly, Control System considering quantizer are modeled and analyzed. And then the result in the continuous system is reinterpreted in the discrete system. Secondly, we generalized the result to the control system equipped time-variant logarithmic quantizer. Finally, we generalized the result to the a kind of NCS model called periodic communication NCS model founded by the Antsaklis. It is clear that the similar result can be gained in the models of this paper. And the results are validated in Matlab/Simulink simulation environment. Also quantized feedback control is introduced in the last charter. We are able to convert this kind of problem to uncerntainty problem and derive logarithmic quantizer could stabilize the given system.