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Industrial robot |
An
automatically controlled, programmable multipurpose
manipulator that can be programmed in three or more
axes. The robot may be fixed in place or mobile for
use in industrial automation applications. |
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Impulse change: |
A
forcing function in which the input variable is
suddenly increased to a very large value and then
immediately returned to its initial level. |
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Instrument: |
(1) The term for any item of electrical or
electronic equipment designed to carry out a
specific function or set of functions. (2) A device
for measuring the value of an observable attribute.
The instrument also may control the value. |
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Integral control: |
A
controller relationship or transformation in which
the area under the error-time curve is used to
determine the controller output. The cumulative area
is divided by a constant called the Integral Time
Constant. Often referred to as reset control.
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Intelligent manufacturing system: |
An
automated system that controls a factory or process
using "intelligent" methodologies such as expert
systems, fuzzy logic, artificial neural networks,
and agent-based software. |
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Interacting control systems: |
When the control variable in one control system
either directly or indirectly affects another
control system and vice versa, these systems are
said to be interacting. |
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Interface: |
(1) A shared boundary between two pieces of
equipment. (2) The hardware and software needed to
enable one device to communicate with another. |
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Internet: |
The networking of tens of thousands of public and
private networks throughout the world. The
Internet's TCP/IP communications standards mean
computers anywhere in the world even though running
different operating systems and applications can
communicate with one another. Hypertext markup
language (html) lets the computers display the
accessed information in graphical pages. |
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Intranet: |
A
network within a business enterprise that uses the
same technology as the global Internet. Similar to a
Local Area Network but generally bigger in size. |
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Island of automation: |
A
stand-alone pocket of automation, such as a robot,
CAD/CAM system or CNC machine that is not connected
into a cohesive system. |
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Just-in-time (JIT): |
An
approach to manufacturing that stresses the benefits
inherent in a system, whereby material is brought to
the work site only when it is needed. To achieve
this goal, each operation must be synchronized with
those subsequent to it. |
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Kanban:
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The Japanese methodology for achieving JIT, often
involving the use of Kanban, or cards, to
indicate parts' status. |
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Kansei Engineering: |
Kansei
is a Japanese term where the syllable
kan
means sensitivity and sei means sensibility.
The term is used to express the quality of an object
to produce pleasure through its use. Therefore,
there are objects with much kansei and others with
little or no kansei at all. Kansei
engineering translates consumers' psychological
feelings into perceptual design elements. It is also
sometimes called "sensory engineering" or "emotional
usability." The technique involves determining the
sensory attributes that elicit particular subjective
responses and then designing a product using those
attributes that elicit desired responses.
A set of diverse products
are used to provoke a wide range of emotional
responses. These are assessed using sets of bipolar
attribute rating scales. A typical rating scale uses
a pair of opposed terms, such as simple vs.
complex or enticing vs. repulsive, located on
the ends of a continuum. Participants place marks on
this continuum indicating where they think a product
falls relative to the two attributes in question. |
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Knowledge-based system: |
Software using A.I. techniques and a base of
information about specialized activities to control
systems or operations. |
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Ladder logic: |
The basis behind the programming method used with a
PLC. The logic is usually displayed in the form of a
diagram that resembles a ladder (or series of
steps). These steps can include multiple conditional
statements. |
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Lean production: |
A
system of production developed in Japan that
stresses quick tool changeover times, minimum parts
and work-in-progress inventories, high levels of
quality and continuous improvement. |
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Load cell: |
A
transducer for the measurement of force or weight.
Action is based on strain gauges mounted within the
cell on a force beam. |
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Local area network (LAN): |
A
system of computers and terminals connected within a
limited geographical area, usually at moderate to
high data rates. |
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Loop-tuning: |
The process of adjusting the controller constants to
achieve a particular system response. |
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Machine vision: |
(1) A computer perception of a visually based
sensory output used to produce a concise description
of an image. (2) A device used for optical
non-contact sensing to automatically receive and
interpret an image of a real scene in order to
obtain information or to control a process. |
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Maintenance management system: |
An
automated software system for handling maintenance
work orders as well as associated inventory,
purchasing, accounting and human resources
functions. |
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Manufacturing execution system (MES):
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A
system using network computing to automate
production and process automation by downloading
recipes and work schedules and by uploading
production results to bridge the gap between
business and plant floor or process control systems.
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Manufacturing resources planning (MRP II): |
A
computerized method for planning the use of a
company's resources, such as scheduling raw
materials, vendors, production equipment and
processes; system includes financial manufacturing
and distribution management. |
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Mass customization: |
A
system that stresses production of small lots of
customized goods rather than large volumes of
standardized products. |
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Materials requirements planning (MRP):
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A
software module using the bill of material,
inventory data and the master production schedule
(MPS) to calculate requirements for materials and to
make recommendations to release replenishment orders
(POs) for materials; since it is time-phased, it
makes recommendations to reschedule open orders when
due dates and need dates are not in phase.
Time-phased MRP begins with the items listed on the
MPS and determines:
- the quantity of all components and materials required
to fabricate those items.
- the date that the components and materials are
required. |
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Membership function: |
A
function used to represent the degree of belief of a
statement or variable at various settings on a
universe of discourse. |
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Model-based control: |
A
control system in which a mathematical model is used
to predict a system response and adjust controller
settings based on the deviation of the model from
the actual output. |