Structural Design Methodology
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Any system parameter is perfected and achieved by structural changes, i.e. by addition of new components and links, and feedback, which is the main consideration for any component connection and the main tool of the designer. The circuit optimization by the variations of component parameters is acceptable only when the structural means of improvement are exhausted.
The first run of the system synthesis and analysis is performed on the level abstracted from the energy forms, i.e. with graphic representation of the system under design using signal flow graphs.
The circuit synthesis is executed by iterative process of the structure implementations using a library of cells, and a detailed simulation verifies implementation.
The circuits and systems that do not comply with definition of “good” systems are rejected (even if they appear acceptable).
Hence, the structural design methodology is a set of rules describing where and how to look for solutions to the problem. The results are usually not isolated and specific, and different circuit solutions for the same problem can be created by designers with different background and experience or by the same designer if more time is allowed to tackle the same problem.
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