Linear Systems

1

Introduction

With the rapid development of computer and automation technologies, more and more attention is paid to the digital control system which has been considered as one of the most important and active fields in the research. A typical configuration of the digital control system is shown in Figure 1.1, in which limitation in available microprocessor memory, effects of finite word length (FWL) of the digital processor, errors for truncation and quantization of the A/D and D/A converters, and so on, always cause the controller parameters trivial deviations from the original design values [47]. Keel and Bhattacharyya [77], by means of numerical examples, have shown that the controllers designed by using weighted H_∞, µ, and L₁ synthesis ...