Practice: Trade Study - Weighted Objectives Method |
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The objective of a trade study is to determine the best means of achieving the capability of a particular aspect of the system in a rational manner. |
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Purpose
The main focus is to understand and choose the best approach to achieving a capability of a function in a
rational manner (for example assess build, buy, re-use) and to apply Measures of Effectiveness as weighted
criteria according to importance like cost, safety to support elaboration of design concepts.
The main value proposition of this practice is to allow stakeholders to clearly assess the merits of alternative
solution concepts.
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Main Description
This practice is based on a technique known as the Weighted Objectives Method, developed by N. Cross [Engineering Design
Methods: Strategies for Product Design, Nigel Cross, Wiley, 1989]. This form of analysis is commonly used to evaluate
potential solutions to functional problems. It can also be used to determine the best hardware platforms for software or
decide the optimum mechanical/electrical hardware split based upon non-functional requirements like a set of customer
constraints, performance or cost criteria. |
How to read this practice
Start with the main workflow and go through each task in detail. Read the description of the central artifact of this
practice, the Trade Study Report, and its collateral material.
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Relationships
Licensed Materials - Property of IBM
© Copyright IBM Corp. 1987, 2012. All Rights Reserved.
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