Accession Number : AD0668056

Title :   INVESTIGATING ONE CLASS OF EXTREMUM SYSTEMS OF DISCRETE ACTION UNDER THE INFLUENCE OF RANDOM INTERFERENCES,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Aleksandrovskii,N. M. ; Madzharov,N. E.

Report Date : 28 JUL 1967

Pagination or Media Count : 15

Abstract : An automatic-control system in which the sampled signal is used for both controlling the actuator and forming the control law is theoretically considered. It is assumed that: the plant is first-order linear; the sampling period is much longer than the total time of control operations. It is found that considerable deviations from the absolute optimum do not seriously affect system accuracy; the latter increases up to a certain value of gain; beyond that value, the extremum-tracking error becomes higher again because of the increased hunting amplitude. Recommendations for selecting the optimal system gain are given. Formulas are developed for the steady-state error of the sampling-data system subjected to noise; in these formulas, the plant inertia is allowed for.

Descriptors :   (*CONTROL SYSTEMS, THEORY), SAMPLING, OPTIMIZATION, AUTOMATIC, ACCURACY, ERRORS, NOISE, SERVOMECHANISMS, NONLINEAR SYSTEMS, DIFFERENTIAL EQUATIONS, USSR

Subject Categories : Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE