Accession Number : ADA307051

Title :   The Effects of a Computer-Aided Teleoperation Technology on Operator Workload and Performance of Concurrent Tasks.

Descriptive Note : Final rept.,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Glumm, Monica M. ; Breitenbach, Francis W. ; Grynovicki, Jock O.

PDF Url : ADA307051

Report Date : FEB 1996

Pagination or Media Count : 53

Abstract : The feedback limited control system (FELICS) is a computer-aided teleoperation (CAT) technology that enables the remote operator to designate an extended path that the vehicle will automatically follow. This report describes the methodology and results of a study designed to quantify the effects of this technology on remote driving performance and operator workload in both single and dual task conditions. In the dual task condition, the operator's ability to detect and identify targets while driving was also measured. These data were compared with those obtained when the same vehicle was operated in the standard mode of remote driving. The study was conducted on an indoor test course consisting of five segments: straight-aways, turns, serpentine, figure 8, and obstacle avoidance. Generally, for most segments of the course, greater speeds and fewer errors (p <.001) were achieved by subjects who drove the vehicle in the standard mode. In this mode, subjects rated the effort they expended as being less (p <.05) than did those subjects who operated the vehicle in the CAT mode. A significant relationship was found across driving modes between the distance traveled off the road and the subjects' assessment of their performance (p <.05). An association was also found between the subjects' level of frustration and the number of obstacles hit in the obstacle avoidance segment of the course (p <.05). When subjects were required to detect and identify targets while driving, driving speed in both modes decreased significantly (p <.001). In the CAT mode, the distance traveled off the road in turns and in the serpentine segments increased (p <.05), but driving error in the standard mode on these and other segments of the course was unaffected. Fewer targets were also correctly identified in the CAT mode than in the standard mode of remote operation.

Descriptors :   *ROBOTICS, *MAN COMPUTER INTERFACE, *TELEOPERATORS, VELOCITY, IMAGE PROCESSING, POSITION(LOCATION), CONTROL SYSTEMS, SYSTEMS ENGINEERING, COMPUTER AIDED DESIGN, PERFORMANCE(HUMAN), TARGET RECOGNITION, RESOLUTION, ACCURACY, CONCURRENT ENGINEERING, ERROR ANALYSIS, FEEDBACK, GROUND VEHICLES, COMPUTER GRAPHICS, COMPUTER APPLICATIONS, ROAD TESTS, GROUND TRAFFIC, VISUAL PERCEPTION, CONTROL THEORY, MAN MACHINE SYSTEMS, TARGET DETECTION, WORKLOAD, JUDGEMENT(PSYCHOLOGY), COLLISION AVOIDANCE, OFFROAD TRAFFIC, REMOTE CONTROL, TURNING(MANEUVERING), DRIVERS(PERSONNEL).

Subject Categories : Cybernetics
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE