Accession Number : ADA097329


Title :   Human Operator Modeling for Aerial Tracking.


Descriptive Note : Technical rept. 1 Oct 78-30 Sep 79,


Corporate Author : CONNECTICUT UNIV STORRS DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE


Personal Author(s) : Korn,Jonathan ; Ephrath,Arye R ; Kleinman,David L


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA097329


Report Date : Dec 1980


Pagination or Media Count : 123


Abstract : Modern Optimal Control techniques are employed to investigate and model human performance degradation under sustained positive linear acceleration stress. The study, which combines both experimental and analytical programs, reaffirms the hypothesis that target tracking performance under Gz-stress deteriorates significantly. The empirical data exhibit trends which manifest this contention: Gz-stress effects slow tracking error recovery, lower magnitude of the human describing function, increased variability in tracking errors, a large increase in the pilot's control remnant, and significantly larger RMS tracking scores. A normative performance G-model, based upon the Optimal Control Model (OCM), is developed. The model outputs include first- and second-order statistics of the various quantities in the tracking loop, such as tracking errors, control input time histories. Alternately, when a steady state situation is considered, the model predicts the human transfer function, control remnant and other related frequency measures. It is shown that under Gz-stress, the OCM is augmented with G-submodels and that model parameters depart from their nominal values. (Author)


Descriptors :   *PERFORMANCE(HUMAN) , *ACCELERATION , *STRESS(PSYCHOLOGY) , *STRESS(PHYSIOLOGY) , *PILOTS , MATHEMATICAL MODELS , FLIGHT CONTROL SYSTEMS , TARGET ACQUISITION , TRACKING , VERTICAL ORIENTATION , AERIAL WARFARE , GRAVITY , SUPERSONIC FLIGHT , LINEAR ACCELERATORS


Subject Categories : Psychology
      Personnel Management and Labor Relations
      Stress Physiology


Distribution Statement : APPROVED FOR PUBLIC RELEASE