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Principles of Engineering System Design

Principles of Engineering System Design. Dr T Asokan asok@iitm.ac.in. Principles of Engineering System Design. GRAPHICAL MODELLING TECHNIQUES. Dr T Asokan asok@iitm.ac.in. Process Modelling.

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Principles of Engineering System Design

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  1. Principles of Engineering System Design Dr T Asokan asok@iitm.ac.in

  2. Principles of Engineering System Design GRAPHICAL MODELLING TECHNIQUES Dr T Asokan asok@iitm.ac.in

  3. Process Modelling A process model basically defines the functional decomposition of the system function and the flow of inputs and outputs of a system • Data flow diagrams (DFD) • What processing is done? When, how, where, by whom? • What data is needed? By whom, for what, when? Basic constructs of DFD are: Function, dataflow, store, and terminator Asokan T ED 309

  4. Data Flow Diagram for Design Process

  5. N-squared (N2) Charts: The N Functions that are partition of a higher level function are displayed along a diagonal of the diagram with N rows and N columns Asokan T ED 309

  6. Asokan T ED 309

  7. X X Asokan T ED 309

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