The starting point is a market need or a new idea; the end point is the
full product specification of a product that fills the need or embodies the
idea. Figure 2.1: the stages of conceptual, embodiment and detailed
designs, explained in a moment. The product itself is called a technical
system. A technical system consists of sub-assemblies and components,
put together in a way that performs the required task, as in the breakdown
of Figure 2.2. It is like describing a cat (the system) as made up of one
head, one body, one tail, four legs, etc. (the subassemblies), each
composed of components—femurs, claws, fur. This decomposition is a
useful way to analyze an existing design, but it is not of much help in the
design process itself, that is, in the synthesis of new designs. Better, for
this purpose, is one based on the ideas of systems analysis. It thinks of the
inputs, flows and outputs of information, energy, and materials, as in
Figure 2.3. The design converts the inputs into the outputs. An electric
motor converts electrical into mechanical energy; a forging press takes
and reshapes material. In this approach, the system is broken down into
connected sub-systems each of which performs a specific function, as in
Figure 2.3; the resulting arrangement is called the function-structure or
function decomposition of the system. The function-structure gives a
systematic way of assessing design options.
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
الرجوع الى لوحة التحكم
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