Date post: | 28-Jan-2015 |
Category: |
Technology |
Upload: | mayank-gupta |
View: | 778 times |
Download: | 2 times |
ROBOTICS
INDEX About robotics History of robotics Components Controls Robotic research Education & training Employment
Biblography
http://en.wikipedia.org/wiki/Robotics https://www.google.co.in/imghp?hl=en&tab=wi&ei
=u6JkU4ycN9KNuATZqoLICw&ved=0CAQQqi4oAg
About roboticsRobotics is the branch of technology that deals with the design, construction,
operation & applicable of robots, as well as computer system for their control,
sensory feedback, and information processing. These technologies deal with
automated machines that can take the place of human in dangerous
environments or manufacturing process, or resemble human in appearance,
behavior & Cognition.
History of robots In 1927 the Maschinenmensch ("machine-human") gynoid humanoid
robot (also called "Parody", "Futura", "Robotrix", or the "Maria impersonator") was the first depiction of a robot ever to appear on film was played by German actress Brigitte Helm in Fritz Lang's film Metropolis
In 1942 the science fiction writer Isaac Asimov formulated his Three Laws of Robotics.
In 1948 Norbert wiener formulated the principles of cybernetics, the basis of practical robotics.
Fully autonomous robots only appeared in the second half of the 20th century. The first digitally operated and programmable robot, the Unimate, was installed in 1961 to lift hot pieces of metal from a die casting machine and stack them. Commercial and industrial robots are widespread today and used to perform jobs more cheaply, or more accurately and reliably, than humans. They are also employed in jobs which are too dirty, dangerous, or dull to be suitable for humans. Robots are widely used in manufacturing, assembly, packing and packaging, transport, earth and space exploration, surgery, weaponry, laboratory research, safety, and the mass production of consumer and industrial goods.
Components Power sources Actuation Sensing Manipulation Locomotion Environmental interaction and navigation Human robot interaction
Power sourcesAt present mostly (lead-acid) batteries are used as a power source. Many
different types of batteries can be used as a power source for robots. They
range from lead acid batteries which are safe and have relatively long shelf
lives but are rather heavy to silver cadmium batteries that are much smaller in
volume and are currently much more expensive. Potential power sources
could be: pneumatic(compressed gases) hydraulics (liquids) Flywheel energy storage organic garbage (through anaerobic digestion)
ActuationActuators are like the “muscles" of a robot, the parts Which convert stored
energy into movement. By far the most popular actuators are electric motors
that spin a wheel or gear, and linear actuators that control industrial robots in
factories. But there are some recent advances in alternative types of
actuators, powered by electricity, chemicals, or compressed air . There
are more actuators:
Electric motors Linear actuators Linear actuators Air muscles Muscle wire Electro active polymers Piezo motors Elastic nanotubes
SensingSensors allow robots to receive information about a certain measurement of
the environment, or internal components. This is essential for robots to
perform their tasks, and act upon any changes in the environment to
calculate the appropriate response. They are used for various forms of
measurements, to give the robots warnings about safety or malfunctions, and
to provide real time information of the task it is performing. There are more
sensing robots are: Touch Vision
ManipulationRobots need to manipulate objects; pick up, modify, destroy, or other wise
have an effect. Thus the "hands" of a robot are often referred to as end
effectors, while the "arm" is referred to as a manipulator. Most robot arms
have replaceable effectors, each allowing them to perform some small range
of tasks. Some have a fixed manipulator which cannot be replaced, while a
few have one very general purpose manipulator, for example a humanoid
hand. There are different manipulating are: Mechanical grippers Vacuum grippers General purpose effectors
LocomotionRobot locomotion is the collective name for the various methods that
robots use to transport themselves from place to place. Although wheeled
robots are typically quite energy efficient and simple to control, other forms
of locomotion may be more appropriate for a number of reasons (e.g.
traversing rough terrain, moving and interacting in human environments).
There are different types of locomotion: Rolling robots Two-wheeled balancing robots One-wheeled balancing robots Spherical orb robots Six-wheeled robots Tracked robots
Walking applied to robots ZMP Technique Hopping Dynamic balancing (controlled falling) Passive dynamics Flying Snaking Skating Climbing Swimming (Piscine)
Environmental interaction and navigation
Though a significant percentage of robots in commission today are either human
controlled, or operate in a static environment, there is an increasing interest in
robots that can operate autonomously in a dynamic environment. These robots
require some combination of navigation hardware and software in order to
traverse their environment. Most of these robots employ a GPS navigation
device with waypoints, along with radar, sometimes combined with other sensory
data such as LIDAR, video cameras, and inertial giddiness system for better
navigation between waypoints. There are different Environmental interaction and
navigation are: Human-robot interaction Speech recognition Robotic voice Gestures Facial expression Artificial emotions Personality
ControlThe mechanical structure of a robot must be controlled to perform tasks. The
control of a robot involves three distinct phases – perception, processing, and
action (robotic paradigms). Sensors give information about the
environment or the robot itself. The processing phase can range in
complexity. At a reactive level, it may translate raw sensor information directly
into actuator commands .Sensor fusion may first be used to estimate
parameters of interest (e.g. the position of the robot's gripper) from noisy
sensor data. An immediate task (such as moving the gripper in a certain
direction) is inferred from these estimates. Techniques from control
theory convert the task into commands that drive the actuators. There are
different controls are: Autonomy levels
Robotics researchMuch of the research in robotics focuses not on specific industrial tasks, but
on investigations into new types of robots, alternative ways to think about or
design robots. First generation robots, Moravec predicted in 1997, should
have an intellectual capacity comparable to perhaps a lizard and should
become available by 2010. Because the first generation robot would be
incapable of learning, however, Moravec predicts that the second
generation robot would be an improvement over the first and become
available by 2020, with the intelligence maybe comparable to that of
a mouse. The third generation robot should have the intelligence comparable
to that of a monkey. Though fourth generation robots, robots
with human intelligence, professor Moravec predicts, would become possible,
he does not predict this happening before around 2040 or 2050.
Education and training
Robotics engineers design robots, maintain them, develop new applications
for them, and conduct research to expand the potential of robotics . Robots
have become a popular educational tool in some middle and high
schools, as well as in numerous youth summer camps, raising interest in
programming, artificial intelligence and robotics among students .There
are different Education and Training : Career training Certification Summer robotics camp Robotics afterschool programs
Employment
Technological unemployment is unemployment primarily caused by
technology change. Given that technological change generally increases
productivity, it is a tenet held in economics since the 19th century that
technological change, although it disrupts the careers of individuals and the
health of particular firms, produces opportunities for the creation of new,
unrelated jobs. The notion of technological unemployment leading to
structural unemployment (and being macro economically injurious) is often
called the Luddite fallacy, named after the early historical example of
the Luddite.