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Tuesday, May 13, 2008

Human-robot interaction

  • In recent developments in Artificial Intelligence (AI) and especially in robotics we can observe a tendency towards building intelligent facts that are meant to be social, to have ‘human social’ characteristics like emotions, the ability to conduct dialogue, to learn, to develop personality, character traits, and social competencies. Care, entertainment, pet and educational robots are conceptualised as friendly, understanding partners and credible assistants which communicate ‘naturally’ with users, show emotions and support them in everyday life. Social robots are often designed to interact physically.
  • Upper and lower limb robotic tools for neuro-rehabilitation are effective in reducing motor impairment but they are limited in their ability to improve real world function. There is a need to improve functional outcomes after robot-assisted therapy. Improvements in the effectiveness of these environments may be achieved by incorporating into their design and control strategies important elements key to inducing motor learning and cerebral plasticity such as mass-practice, feedback, task-engagement, and complex problem solving.
  • Examples include research conducted in JPL's , including such disciplines as , and In addition, there are several areas in technology research, including , and Planetary Protection.
  • In 1970 only two manufacturers existed in the United States, namely the American Machine and Foundry (AMF) Versatran and the Unimation, Inc. Unimate. These robots, still in the forefront today, were just emerging and gaining acceptance in 1970, with approximately 200 industrial robots at work in the U.S., and an amassed 600,000 hours on the job, a negligible amount considering that the total U.S.blue collar work force puts in 200 million hours each day. However more than seventeen types of robots are now available in the U.S. at least twelve of which are manufactured in this country. They range from minirobots with payloads of only a few ounces and reaches of less than a foot to the larger universal robots which can handle payloads of up to 150 lbs., reach 3 ½ ft., and move at speeds up to 3 ft./sec. Recent additions to the U.S. arsenal are the Burch Control robot with a payload capacity of 6000 lbs. Industrial robots are easily reprogrammable, operatorless handling devices that can perform simple, repetitive jobs that require few alternative actions and minimum communications with the work environment. They are well suited to handling parts that are red hot or feezing cold, and they can function in corrosive, noxious or extremely dusty atmospheres that would be injurious to human beings. Passage in the United States of the Occupational Safety and Health Act of 1970 has provided strong impetus for the use of industrial robots. As discussed in a recent article in Assembly Engineering Magazine (Ref.1), the Act currently states that a human being cannot place his hands within punch press dies to load or remove parts, and it is imminent that OSHA standards will be extended to cover other fabricating and assembly machines, such as staking presses, spot welding machines, riveting machines, holding and clamping equipment, electron component Inserting equipment, and automatic screwdriving machines. In many cases the cost and time to retool an existing operation to conform to the standards will be prohibitive compared to the cost and time required to purchase and program an industrial robot to perform the potentially dangerous operations.
  • This special issue presents nine articles. Novel strategies covered in this issue encourage more natural movements through the use of virtual reality and real objects and faster motor learning through the use of error feedback to guide acquisition of natural movements that are salient to real activities. In addition, several articles describe novel systems and techniques that use of custom and commercial games combined with new low-cost robot systems and a humanoid robot to embody the " supervisory presence" of the therapy as possible solutions to exercise compliance in under-supervised environments such as the home.
  • A great set of design and construction articles awaits the curious robot builder at where discusses theory and implementation of line tracking, dead reckoning, drive trains, motor drive, motor control, and microcontrollers. Tossed into the mix are articles discussing basic electronics including understanding how resistors, current, and voltage are related, how transistors work, mechanical switch debouncing, DAC construction, and ideas about projects cases. Ibrahim's articles are well-written and include theory right along with the nuts and bolts of schematics, source code, and troubleshooting.
  • An summarizes recent developments in the electronic noses. The latest variety sensors to give machines a sense of smell are based on conducting polymers that produce electrical signals in response to certain chemicals. The human nose, which is not particularly capable, as noses go, can detect about 10,000 different chemicals, known as volatile organic compounds (VOCs). Often, a single unique scent is the combination of hundreds of different VOCs. Early electronic sensors could only detect single chemicals. The most recent polymer noses are printable organic semiconductors that can "differentiate between basic classes of odors, such as acids, alcohols, amines, and thiols" allowing them easily sniff out the difference between wine and vinegar. There are still some bugs to work out before this technology becomes commercially available. For more, see our older articles on the the NIST Nosend the Northwest builders will be testing their metal Saturday and Sunday at the North West Model Hobby Expo, where Western Allied Robotics will be holding its annual local tournament. Cash prizes of $100 will go to winners in the 1-, 3-, 12- and 30-pound categories.

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