systems engineering Systems engineering is an interdisciplinary field of engineering and engineering management that focuses on how to design, integrate, and manage complex systems over their Enterprise life cycle, life cycles. At its core, systems engineering uti ...

, the tricotyledon theory of system design (T3SD) is a

mathematical Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...

theory of system design developed by A. Wayne Wymore. T3SD consists of a language for describing

system A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its open system (systems theory), environment, is described by its boundaries, str ...

s and

requirement In engineering, a requirement is a condition that must be satisfied for the output of a work effort to be acceptable. It is an explicit, objective, clear and often quantitative description of a condition to be satisfied by a material, design, pro ...

s, which is based on

set theory Set theory is the branch of mathematical logic that studies Set (mathematics), sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory – as a branch of mathema ...

, a mathematical systems model based on port automata, and a precise definition of the different types of system requirements and relationships between requirements.

System requirements model

* I/O requirement * Performance requirement * System test requirement * Cost requirement * Tradeoff requirement

System design

* Based on set theory * Transition systems * Functional system design * Buildable system design

References

Systems engineering {{engineering-stub