Accession Number : AD0275774

Title :   TIME-VARYING CHARACTERISTICS OF THE HUMAN OPERATOR IN AN OPEN LOOP

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DYNAMIC ANALYSIS AND CONTROL LAB

Personal Author(s) : BELANGER,PIERRE R.

Report Date : 30 MAR 1962

Pagination or Media Count : 1

Abstract : This study utilizes the classical theory of timevarying networks, due to Zadeh, to describe randomly time-varying characteristics of the human operator of a control system. The method is applied to the performance of the human operator in tracking tasks without visual feedback. The human is required to track a random appearing target which is displaced as the sum of five nonharmonic sinusoids. The human's transfer function varied randomly in time. The average openloop characteristics show that with no dynamics in cascade with the human, the latter has more difficulty remembering the proper gain than the proper phase which he must apply in order to track accurately. When dynamics are introduced, it is seen that the human tends to forget the effects that the dynamics produced when tracking with feedback. (Author)

Descriptors :   *CONTROL SYSTEMS, *TRACKING, CONTROL, FEEDBACK, INTEGRAL TRANSFORMS, NUMERICAL INTEGRATION, LINEAR SYSTEMS, HUMANS, MEASUREMENT, NONLINEAR SYSTEMS, STATISTICAL FUNCTIONS, TIME

Distribution Statement : APPROVED FOR PUBLIC RELEASE