LAYERED PROTOCOL ANALYSIS OF A CONTROL DISPLAY UNIT

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Authors
  1. Farrell, P.S.E.
  2. Semprie, M.A.H.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Layered Protocl Theory (LPT) has been described as a special case of Perceptual Control Theory (PCT) where its core tenet is, All communication is the control of belief. It was recognized that LPT could be used to analyse the interaction between communicating partners in the context of human-machine systems. System interface problems were identified for the Control Display Unit (CDU) in the CH-146 Griffon helicopter. This application presented a good opportunity to conduct a Layered Protocl analysis on the pilot-CDU system. Aspects of LPT were discussed in detail including the LPTool, its Network View, GPG View, and Nine Element View. A pilot-CDU interaction was modelled with the aid of the LPTool program. The analysis yielded a list of interaction deficiencies between pilot and CDU which supported previous observations. The deficiencies were addressed in a new interface design that would provide the necessary controls and displays so that the required messages could be successfully transmitted and interpreted.
Keywords
Layered Protocol Theory;Perceptual Control Theory;Control Display Unit;Human Machine Systems;Human Machine Interaction;Feedback
Report Number
DCIEM-97-R-70 —
Date of publication
01 Dec 1997
Number of Pages
85
DSTKIM No
98-00905
CANDIS No
507513
Format(s):
Hardcopy;Document Image stored on Optical Disk

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