'principles' of engineering1.notebook

1

October 10, 2012

Engineering:

• A science by which the properties of matter and the sources of energy in nature are made useful to man• Application of mathematics and science principles to better improve our way of living

Engineer:

• A designer or builder• A person trained in or follows as a profession

1. Modeling:

• Use of words pictures, and mathematics to describe a system• Manipulation of models of systems through the use of apparatus, computer simulations and mock-ups

A) Descriptive Modeling-Pictorial Modeling results in descriptions that take the form of graphs, flow charts, diagrams, and other types of drawings

B) Functional Modeling- Physical models or replicas of real systems with moving parts

'principles' of engineering1.notebook

2

October 10, 2012

2. Systems

• Describing a system in terms of input, process, output• Explaining and demonstrating how a specific system is made up of sub-systems• Demonstrating how a system is controlled through feedback

A) Open Loop System- no feedback B) Closed Loop System- has feedback

InputProcess

Output

Feedback

InputProcess

Output

'principles' of engineering1.notebook

3

October 10, 2012

Input=cold air

Process= heating the air

Output=warm air

Feedback= Thermostat