A set of standard specifications for linear automatic control systems

A WIDESPREAD FEELING exists throughout the automatic control field that the art has matured to the point where standardization of performance specifications should be considered. In fact, during a 2-year study in which contact was made with approximately 100 control system vendors, only once were the authors told that the problem was unimportant. This paper reports on the first portion of the study: linear systems. The specifications discussed fall naturally into three groups: frequency domain, time domain, and generalized performance indices. Recommendation of a nonconflicting set of specifications is made from these groups. In addition, a discussion of statistical specifications and recommendations on data presentation are given.