OPTIMIZATION, TRADE OFFS,
QUALITY CONTROL
QUALITY CONTROL
Trade-off involves a choice or exchange
for one quality over another.
For
example, the decision to favor the best
material regardless of weight in order to
achieve maximum strength may require
a designer to make a trade-off of costs.
Criteria Defined
Criteria the desired elements and features of a
product or system
Electricity
most everyday
activities. From the
moment you flip the
first switch each
morning
Development & Quality Control
A transportation system for a large city may rely on mass transit, while one in a town might require reliance on personal vehicles, such as bicycles or cars.
technology system
s a group of resources
(subsystems) working together to solve problems
and extend human capabilities.
Trade-off
In order to maintain established requirements, trade-offs are made in
order to meet the characteristics of an optimum design.
Function
the purpose of an object
OPEN-LOOP
AN OPEN-LOOP SYSTEM HAS NO
FEEDBACK AND REQUIRES HUMAN
INTERVENTION,
The use of technology
sometimes helps to improve personal lives by lessening threats such as disease, toil, or ignorance.
Core Technologies
he core
technologies are the
“basic building
blocks” from which all
technology systems
are created.
Quality Control
Quality control is a planned
process to ensure that a
product, service, or system
meets established criteria.
Aesthetics:
involves all your senses - vision,
hearing, touch, taste, and smell - and your
emotions.
closed loop
WHILE A CLOSED-
LOOP SYSTEM USES FEEDBACK
FROM A CONTROL MECHANISM.
The development of technology
is a human activity and is the
result of individual or collective
needs and the ability to be
creative.
Biotechnology
Technology of using, adapting, and
altering organisms and biological
processes for a desired outcome.
Opportunity cost
The second-best alternative (or the value of that
alternative) that must be given up when scarce
resources are used for one purpose instead of
another
Constraints
limitations on a design
Complex systems
have many layers of controls
and feedback loops to provide information. Controls
do not always succeed or work perfectly.
motive and the market.
The success of a technology is often determined
by whether or not it works.
Electrical Technology
Technology of producing, storing,
controlling, transmitting and getting work
from electrical energy.
Cost:
an amount that must be paid or
spent to obtain something. The effort, loss
or sacrifice made to obtain something.
Design Principles
Established design principles are used to create
designs across all technologies and to evaluate
designs
Complex Systems and Systems Failure
A farm is an integrated system
of both living (the farmer,
crops, animals, weeds,
insects) and non-living (the
tractor, barn, house,
machinery, fertilizer)
subsystems.
quality control
manufactures compare parts,
assemblies, and finished products with
engineering standards.
Electronic Technology
Technology of using small amounts of
electricity for controlling; detecting; and
information collecting, storing, retrieving,
processing and communicating.
Thermostat for controlling temperature,
a metal detector, video tape recorder,
computer, pocket calculator, telephone,
radio and television.