Analysis Techniques For Man-Machine Systems Design

NATO UNCLASSIFIEDrAC/243(Panel-8)TR/7IVolume I- 20 -Unpredictable effects due to the interaction of human behaviour (capabilities and restrictions)with the system in an uncertain operating environment are not identified by these techniques. Inplanning the human engineering activities for a project, the manager and the human engineeringpractitioner must consider how any analyses will be complemented by modelling,experimentation, simulation, or trials.35. The sequence of analyses shown in Figure 2.3 represents a steady development ofdetail about operator and maintainer tasks, starting from the operational requirement and endingwith the task analysis, performance prediction, and interface and workspace design. Thissequence of analyses feeding into design activities parallels that of systems engineering ingeneral (Fig. 2.4). The systems engineering approach has been defined as "a process thatinvolves the application of appropriate scientific and technical knowledge:(1) to transform an operational need into a system configuration with definedparameters, through an iterative process of analysis, design, test, and evaluation;(2) to integrate all performance requirements, including reliability, maintainability,supportability, etc. into the total engineering effort; and(3) to integrate related components to insure interoperability and optimum systemperformance." (Diamond, 1989).1sq