Analysis Techniques For Man-Machine Systems Design

NATO UNCLASSIFIEDA-AC/243(Panel 8)TR/7 -40-Volume 2Inputs to the techniqueOutputs of the techniqueBehaviour graphs model the communication and A complete behavioural model is established by Fcoordination between components and operators in a performing the analysis.system. Thus details of the system architecture must beavailable. The input and output item sequences betweenthe system and its environment must also be available.IeSYS.. itor o p itrepaeo tubel\SYSI.\\ \\ttest.Pparbd"dorpeo\ \ = trnsfee ga engagement\ \ data 8 arm\ \r.... anch. /tj~S sv.3urthd io .e ntstorpe omenv.3.. S YS../.1ianchedr.-.is-: 1 A...../ (ne~tube)::Behaviour graps ar sdfrfnto nlssa h ytm lee an o.cnri oeln. Disretucions caSYS - ss.2Figure 2.12:Behaviour graph for a torpedo engagement-When to useBehaviour graphs are used for function analysis at the system level and for scenario modelling. Discrete functions canbe furnher decomposed into stimulus-response nets, which are used for specification and analysis at the componentNATO UNCLASSIFIED-40 -