Graphical analysis and synthesis of feedback control systems I ¿ Theory and analysis

IN THE DESIGN of high-performance feedback control systems it is necessary to consider simultaneously both the frequency and the transient response. Several methods have been developed to this end.1,2 The method proposed in this paper also operates in terms of both frequency and time domains, but it still permits the entire process to be effected in the real domain, thus greatly simplifying the practical application.