functional decomposition


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functional decomposition

[′fəŋk·shən·əl dē‚käm·pə′zish·ən]
(control systems)
The partitioning of a large-scale control system into a nested set of generic control functions, namely the regulatory or direct control function, the optimizing control function, the adaptive control function, and the self-organizing function.

functional decomposition

Breaking down a process into non-redundant operations. In structured programming, it provides a hierarchical breakdown of the program into the individual operations, or routines, that are required. See normalization.


Functional Decomposition of a Program
This example is ultra simplistic, but shows the hierarchical breakdown of the program into its constituent components.
References in periodicals archive ?
Suppose an organization has the functional decomposition (greatly simplified for discussion purposes) illustrated in Table 1.
Functional Decomposition Method Preserves Form and Function for Computer-Aided Design
The computer-aided geometric modeling research focuses on functional decomposition, a new method for creating a CAD surface structure from polygon models.
However while functional decomposition has remained the development methodology of choice for systems development, a gap has emerged between systems design and software development.

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