Accession Number : AD0265434

Title :   MEASURES OF REMOTE MANIPULATOR FEEDBACK: DIFFERENTIAL SENSITIVITY FR WEIGHT

Corporate Author : AEROSPACE MEDICAL RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : CRAWFORD,BILLY M.

Report Date : MAR 1961

Pagination or Media Count : 1

Abstract : The psychophysical Method of Constant Stimulus Differences was used to determine difference thresholds and Weber ratios for both direct and remote lifting of two standard weight stimuli. A Model 8 Master-Slave Manipulator was used for remote lifting. For 1000-gram weight, difference thresholds were 65.42 and 110.45 grams for direct and remote lifting, respectively. Corresponding difference thresholds for a 3000-gram standard were 149.33 and 195.69 grams. The difference threshold indicates the fineness of weight discrimination which can be expected of a worker. Increases in difference thresholds as a function of remote lifting reflect the loss of feel associated with remote handling. The difference threshold is proposed as a criterion of the fidelity of cues reflected to the operator by the remote-handling system. (Author)

Descriptors :   *REMOTE CONTROL, HANDLING, HUMAN FACTORS ENGINEERING, LIFT, OPERATION, SENSITIVITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE