Accession Number : AD0823030

Title :   RESEARCH ON THE EFFECT OF NONLINEARITIES ON TRACKING PERFORMANCE.

Descriptive Note : Final rept. Sep 64-Sep 66,

Corporate Author : SYSTEMS TECHNOLOGY INC HAWTHORNE CA

Personal Author(s) : Graham, Dunstan

Report Date : JUL 1967

Pagination or Media Count : 73

Abstract : The results of experiments made to determine the effects of common control system nonlinearities on human compensatory tracking are presented. The nonlinearities were: control system friction, friction and preload, friction and spring gradient, and control velocity limiting. Tests were made with three different controlled elements. Force-displacement nonlinearities had essentially no effect on tracking performance. Of the nonlinearities which were tested only control velocity limiting was shown to result in degraded performance. There was no evidence of self-sustained oscillations in the operator-machine systems. (Author)

Descriptors :   (*MAN MACHINE SYSTEMS, TRACKING), (*FLIGHT CONTROL SYSTEMS, PERFORMANCE(ENGINEERING)), HANDLING, DEGRADATION, HUMAN FACTORS ENGINEERING, RESPONSE, FLIGHT SIMULATORS, NONLINEAR SYSTEMS, FRICTION, OPERATORS(PERSONNEL), THEORY, SPRINGS, MECHANICAL PROPERTIES, CONTROL STICKS.

Subject Categories : Aircraft
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE