An Analysis of Teleoperation Workload in Various Sensory Feedback Modes
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
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Recent quality increases of sensory feedback for teleoperation are allowing greater sensory immersion for the teleoperator. High speed and off-road driving conditions are critical teleoperator performance hurdles. The primary challenge to the development of good teleoperated systems is the basic driving task essential to the delivery of a mission package. The Human Research and Engineering Directorate of the U.S. Army Research Laboratory is involved with the advance of sensory feedback technologies in teleoperated systems and examines the effect of these technologies on teleoperator performance. Several driving models reflecting different sensory feedback modes were built in MAN-SEVAL, a module of HARDMAN III. Seven models were built in all, including one baseline model of on-board driving. The six other models consisted of low level feedback, binaural feedback, force feedback, stereovision, wide field of view, and all teleoperated feedback combined. These models have identical functional and task flow structures however, task workloads were altered in each model, based upon the impact of the sensory feedback technology. The purpose of this effort was to 1 define the functions and tasks of the teleoperated driver, 2 formulate teleoperated driving models to assess the teleoperators driving workload during varying sensory feedback conditions, and 3 develop a prediction tool for the impact of technology on teleoperator workload. Iterative model executions provided data that yielded significant differences between on-board and teleoperated workload as well as among workload for teleoperated models only.
- Test Facilities, Equipment and Methods