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Systems Engineering by Dahai Liu

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Chapter 5

System Technical Performance Measures

In previous chapters, we have described the systems design processes and some basic models that are utilized within the design process, including the functional analysis and functional allocation models. Models play a significant role in systems design, and rely on variables and parameters to produce valid results. Taking the functional analysis model as an example, for each of the functions in the functional flow block diagram (FFBD), there are performance or constraints parameters that regulate the function to serve the overall system mission. These design-dependent parameters (DDPs) are usually expressed in quantitative format, which are also called technical performance measures (TPMs).

Systems ...

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