Thursday, January 31, 2008

futureworker

A robot is a mechanical or virtual, artificial agent. It is usually an electromechanical system, which, by its appearance or movements, conveys a sense that it has intent or agency of its own. The word robot can refer to both physical robots and virtual software agents, but the latter are usually referred to as bots to differentiate.While there is still discussion about which machines qualify as robots,a typical robot will have several, though not necessarily all of the following properties:is not 'natural' i.e. artificially created can sense its environment, and manipulate or interact with things in it ,has some degree of intelligence or ability to make choices based on the environment, often using automatic control or a preprogrammed sequence is programmable, moves with one or more axes of rotation or translation makes dexterous coordinated movements appears to have intent or appears agency. Mental agencyFor robotic engineers, the physical appearance of a machine is less important than the way its actions are controlled. The more the control system seems to have agency of its own, the more likely the machine is to be called a robot. An important feature of agency is the ability to make choices. So the more a machine could feasibly choose to do something different, the more agency it has. For example:
a clockwork car is never considered a robot.A remotely operated vehicle is sometimes considered a robot (or telerobot). A car with an onboard computer, like Bigtrak, which could drive in a programmable sequence might be called a robot. A self-controlled car, like the 1990s driverless cars of Ernst Dickmanns, or the entries to the DARPA Grand Challenge, which could sense its environment, and make driving decisions based on this information would quite likely be called robot. A sentient car, like the fictional KITT, which can make decisions, navigate freely and converse fluently with a human, is usually considered a robot. Physical agencyHowever, for many laymen, if a machine looks anthropomorphic or zoomorphic (e.g. ASIMO or Aibo), especially if it is limb-like (e.g. a simple robot arm), or has limbs, or can move around, it would be called a robot.For example, even if the following examples used the same control architecture:A player piano is rarely characterized as a robot.A CNC milling machine is very occasionally characterized as a robot. A factory automation arm is almost always characterized as a robot or an industrial robot. An autonomous wheeled or tracked device, such as a self-guided rover or self-guided vehicle, is almost always characterized as a robot, a mobile robot or a service robot.A zoomorphic mechanical toy, like Roboraptor, is usually characterized as a robot. A humanoid, like ASIMO, is almost always characterized as a robot or a service robot. Interestingly, while a 3-axis CNC milling machine may have a very similar or identical control system to a robot arm, it is the arm which is almost always called a robot, while the CNC machine is usually just a machine. Having a limb can make all the difference. Having eyes too gives people a sense that a machine is aware (the eyes are the windows of the soul). However, simply being anthropomorphic is not sufficient for something to be called a robot. A robot must do something, whether it is useful work or not. So, for example, a rubber dog chew, shaped like ASIMO, would not be considered a robot.Increased productivity, accuracy, and endurance .German KUKA Industrial robots doing vehicle under body assembly Jobs which require speed, accuracy, reliability or endurance can be performed far better by a robot than a human. Hence many jobs in factories which were traditionally performed by people are now robotized. This has led to cheaper mass-produced goods, including automobiles and electronics. Robots have now been working in factories for more than fifty years, ever since the Unimate robot was installed to automatically remove hot metal from a die casting machine. Since then, factory automation in the form of large stationary manipulators has become the largest market for robots. The number of installed robots has grown faster and faster, and today there are more than 1 million robots in operation worldwide (Half of the robot population is located in Asia, 1/3 in Europe, and 16% in North America. Australasia and Africa each account for 1%.)Pick and Place robot, Contact Systems C5 Series.Some examples of factory robots:Car production: This is now the primary example of factory automation. Over the last three decades automobile factories have become dominated by robots. A typical factory contains hundreds of industrial robots working on fully automated production lines - one robot for every ten human workers. On an automated production line a vehicle chassis is taken along a conveyor to be welded, glued, painted and finally assembled by a sequence of robot stations. Packaging: Industrial robots are also used extensively for palletizing and packaging of manufactured goods, for example taking drink cartons from the end of a conveyor belt and placing them rapidly into boxes, or the loading and unloading of machining centers. Electronics: Mass produced printed circuit boards (PCBs) are almost exclusively manufactured by pick and place robots, typically with SCARA manipulators, which remove tiny electronic components from strips or trays, and place them on to PCBs with great accuracy.Such robots can place several components per second (tens of thousands per hour), far out-performing a human in terms of speed, accuracy, and reliability. ADAM carries steel samples in a factory without following lines or triangulating from beacons.Automated Guided Vehicles (AGVs): Mobile robots, following markers or wires in the floor, or using vision or lasers, are used to transport goods around large facilities, such as warehouses, container ports, or hospitals. Early AGV-style robots were limited to tasks that could be accurately defined and must be performed the same every time. Very little feedback or intelligence was required, and the robots may need only the most basic of exteroceptors to sense things in their environment, if any at all. However, newer AGV's, such as the Speci-Minder, ADAM,Tug, and PatrolBot Gofer qualify under the JIRA definition of intelligent robots. They use some form of natural features recognition to navigate. Scanning lasers, stereovision or other means of sensing the environment in two- or three-dimensions is combined with standard dead-reckoning calculations in a probabilistic manner to continuously update the AGV's current location, eliminating cumulative error. This means that the Self-Guided Vehicle (SGV) can navigate a space autonomously once it has learned it or been provided with a map of it. Such new robots are able to operate in complex environments and perform non-repetitive and non-sequential tasks such as carrying tires to presses in factories, delivering masks in a semi-conductor lab, delivering specimens in hospitals and delivering goods in warehouses. Dirty, dangerous, dull or inaccessible tasks The Roomba domestic vacuum cleaner robot does a menial job.There are many jobs which a human could perform better than a robot but for one reason or another the human either does not want to do it or cannot be present to do the job. The job may be too boring to bother with, for example domestic cleaning; or be too dangerous, for example exploring inside a volcano. These jobs are known as the "dull, dirty, and dangerous" jobs. Other jobs are physically inaccessible. For example, exploring another planet, cleaning the inside of a long pipe or performing laparoscopic surgery.Robots in the home:As their price falls, and their performance and computational ability rises, making them both affordable and sufficiently autonomous, robots are increasingly being seen in the home where they are taking on simple but unwanted jobs, such as vacuum cleaning, floor cleaning and lawn mowing. While they have been on the market for several years, 2006 saw an explosion in the number of domestic robots sold. By 2006, iRobot had sold more than 2 million vacuuming robots. They tend to be relatively autonomous, usually only requiring a command to begin their job. They then proceed to go about their business in their own way. At such, they display a good deal of agency, and are considered intelligent robots. A laparoscopic robotic surgery machine.Telerobots: When a human cannot be present on site to perform a job because it is dangerous, far away, or inaccessible, teleoperated robots, or telerobots are used. Rather than following a predetermined sequence of movements a telerobot is controlled from a distance by a human operator. The robot may be in another room or another country, or may be on a very different scale to the operator. A laparoscopic surgery robot such as da Vinci allows the surgeon to work inside a human patient on a relatively small scale compared to open surgery, significantly shortening recovery time. An interesting use of a telerobot is by the author Margaret Atwood, who has recently started using a robot pen (the Longpen) to sign books remotely. The Longpen is similar to the Autopen of the 1800s. This saves the financial cost and physical inconvenience of traveling to book signings around the world. At the other end of the spectrum, iRobot ConnectR robot is designed to be used by anyone to stay in touch with family or friends from far away. One robot in use today, Intouchhealth's RP-7 remote presence robot, is being used by doctors to communicate with patients, allowing the doctor to be anywhere in the world. This increases the number of patients a doctor can monitor.
Military robots: Teleoperated robot aircraft, like the Predator Unmanned Aerial Vehicle, are increasingly being used by the military. These robots can be controlled from anywhere in the world allowing an army to search terrain, and even fire on targets, without endangering those in control. Many of these robots are teleoperated, but others are being developed that can make decisions automatically; choosing where to fly or selecting and engaging enemy targets. Hundreds of robots such as iRobot's Packbot and the Foster-Miller TALON are being used in Iraq and Afghanistan by the U.S. military to defuse roadside bombs or Improvised Explosive Devices (IEDs) in an activity known as Explosive Ordnance Disposal (EOD). Autonomous robots such as MDARS and Seekur are being developed to perform security and surveillance tasks at military facilities to address manpower shortages as well as keeping troops out of harm's way. The Crusher Unmanned Ground Vehicle (UGV) is being developed to perform military missions autonomously. Elder Care: The population is aging in many countries, especially Japan, meaning that there are increasing numbers of elderly people to care for but relatively fewer young people to care for them. Humans make the best carers, but where they are unavailable, robots are gradually being introduced.