Analysis of cyclic-rate sampled-data feedback-control systems

Abstract
IT IS NOT always possible, and sometimes not desirable, to have a sampleddata feedback-control system in which the samples are taken at uniform time intervals. Aperiodic sampled-data systems may result, for example, when time-shared computers are in the system loop or when data detection or transmission processes are inherently aperiodic (e.g. certain tracking radars).