An analysis of the precepts available for synthesizing feedback control system when output characteristics are specified

This thesis contains a compilation and comparison of some of the techniques in use today for synthesizing and analyzing servomechanisms. The techniques are divided into the categories of Trial and Error Design Methods and Analytical Design Methods. Trial and Error Design Methods include such items as Root Locus techniques, Bode and Nichols plots, and other frequency plane plots. Considerable space is devoted to the Mitrovic method and to the Ross-Warren/Mariotti technique of compensation. Analytical Design Methods are generally considered to be those which use some definition of error as a performance index, where the objective is to minimize (or maximize) the performance index. Considerable space is allocated to those methods published by Newton. Some effort is also devoted to the problem of obtaining a proper statement of specifications.