Snakebot

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A Gen 2 Snakebot from NASA, demonstrating rearing capabilities. SnakeBot3.jpg
A Gen 2 Snakebot from NASA, demonstrating rearing capabilities.

A snakebot, also referred to as a snake robot, is a biomorphic robot that resembles a snake. Snakebots have uses similar to those of certain types of soft robots. [1]

Contents

Snakebots can vary significantly in size and design. Their small cross-section-to-length ratios allow them to maneuver through tight spaces. Their ability to change shape allows them to traverse varied terrain. [2]

Snake robots are often designed by connecting multiple independent segments, which provides redundancy and enables continued operation even if some parts are damaged. Snakebots have been posited for a range of practical applications. [3] [4]

A snakebot differs from a snake-arm robot in that, snakebots are usually self-contained, whereas snake-arm robots typically have mechanics remote from the arm itself, possibly connected to a larger system.[ citation needed ]

Applications

By mimicking the locomotion of snakes, snakebots can be used for tasks in multiple industries that traditional robots or human workers may find challenging or impossible to accomplish safely. [5] Snakebots have been considered for the following applications:

Locomotion

Traditional Snakebots move by changing the shape of their body, similar to actual snakes. Many variants have been created that use wheels or treads for movement. There has yet to be any Snakebots that accurately approximate the locomotion of real snakes. However, researchers have produced new movement methods that do not occur in nature.[ citation needed ]

In snakebot research, a gait is a periodic mode of locomotion/movement. Sidewinding and lateral undulation are both examples of gaits. Snakebot gaits are often designed by investigating period changes to the shape of the robot. For example, a caterpillar moves by changing the shape of its body to match a sinusoidal wave. Similarly, a snakebot can move by adapting its shape to different periodic functions. [13]

Sidewinder rattlesnakes can ascend sandy slopes by increasing the portion of their bodies in contact with the sand to match the reduced yielding force of the inclined sand, allowing them to ascend the maximum possible sand slope without slip. [14] Snakebots that side-wind can replicate this ascent. [14]

Current research

Snakebots are currently being researched as a new type of robotic, interplanetary probe by engineers at the NASA Ames Research Center. Software for snakebots is also being developed by NASA, so that they can learn by experiencing the skills to scale obstacles and remembering the techniques. [15]

Snake robots are also being developed for search and rescue purposes at Carnegie Mellon University's Biorobotics Lab. [16]

See also

Related Research Articles

<span class="mw-page-title-main">Carnegie Mellon University</span> University in Pittsburgh, Pennsylvania, US

Carnegie Mellon University (CMU) is a private research university in Pittsburgh, Pennsylvania, United States. The institution was established in 1900 by Andrew Carnegie as the Carnegie Technical Schools. In 1912, it became the Carnegie Institute of Technology and began granting four-year degrees. In 1967, it became Carnegie Mellon University through its merger with the Mellon Institute of Industrial Research, founded in 1913 by Andrew Mellon and Richard B. Mellon and formerly a part of the University of Pittsburgh.

<span class="mw-page-title-main">Enceladus</span> Natural satellite orbiting Saturn

Enceladus is the sixth-largest moon of Saturn and the 18th-largest in the Solar System. It is about 500 kilometers in diameter, about a tenth of that of Saturn's largest moon, Titan. It is mostly covered by fresh, clean ice, making it one of the most reflective bodies of the Solar System. Consequently, its surface temperature at noon reaches only −198 °C, far colder than a light-absorbing body would be. Despite its small size, Enceladus has a wide variety of surface features, ranging from old, heavily cratered regions to young, tectonically deformed terrain.

<span class="mw-page-title-main">Carnegie Mellon School of Computer Science</span> School for computer science in the United States

The School of Computer Science (SCS) at Carnegie Mellon University in Pittsburgh, Pennsylvania, US is a school for computer science established in 1988. It has been consistently ranked among the best computer science programs over the decades. As of 2024 U.S. News & World Report ranks the graduate program as tied for No. 1 with Massachusetts Institute of Technology, Stanford University and University of California, Berkeley.

<span class="mw-page-title-main">Raj Reddy</span> Indian-American computer scientist (born 1937)

Dabbala Rajagopal "Raj" Reddy is an Indian-American computer scientist and a winner of the Turing Award. He is one of the early pioneers of artificial intelligence and has served on the faculty of Stanford and Carnegie Mellon for over 50 years. He was the founding director of the Robotics Institute at Carnegie Mellon University. He was instrumental in helping to create Rajiv Gandhi University of Knowledge Technologies in India, to cater to the educational needs of the low-income, gifted, rural youth. He was the founding chairman of International Institute of Information Technology, Hyderabad. He was the first person of Asian origin to receive the Turing Award, in 1994, sometimes known as the Nobel Prize of computer science, for his work in the field of artificial intelligence.

<span class="mw-page-title-main">Sidewinding</span> Particular kind of snake locomotion

Sidewinding is a type of locomotion unique to snakes, used to move across loose or slippery substrates. It is most often used by the Saharan horned viper, Cerastes cerastes, the Mojave sidewinder rattlesnake, Crotalus cerastes, and the Namib desert sidewinding adder, Bitis peringueyi, to move across loose desert sands, and also by Homalopsine snakes in Southeast Asia to move across tidal mud flats. Any number of caenophidian snakes can be induced to sidewind on smooth surfaces, though the difficulty in getting them to do so and their proficiency at it vary greatly.

Robot locomotion is the collective name for the various methods that robots use to transport themselves from place to place.

<span class="mw-page-title-main">Red Whittaker</span> American robotisict

William L. "Red" Whittaker is an American roboticist and research professor of robotics at Carnegie Mellon University. He led Tartan Racing to its first-place victory in the DARPA Grand Challenge (2007) Urban Challenge and brought Carnegie Mellon University the two million dollar prize. Previously, Whittaker also competed in the DARPA Grand Challenge, placing second and third place simultaneously in the Grand Challenge Races.

<span class="mw-page-title-main">Terrestrial locomotion</span> Ability of animals to travel on land

Terrestrial locomotion has evolved as animals adapted from aquatic to terrestrial environments. Locomotion on land raises different problems than that in water, with reduced friction being replaced by the increased effects of gravity.

<span class="mw-page-title-main">BigDog</span> Quadruped robot built by Boston Dynamics

BigDog is a dynamically stable quadruped military robot platform that was created in 2005 by Boston Dynamics with the Harvard University Concord Field Station. It was funded by DARPA, but the project was shelved after the BigDog's gas engine was deemed too loud for combat.

<span class="mw-page-title-main">Hexapod (robotics)</span> Type of robot

A six-legged walking robot should not be confused with a Stewart platform, a kind of parallel manipulator used in robotics applications.

Modular self-reconfiguring robotic systems or self-reconfigurable modular robots are autonomous kinematic machines with variable morphology. Beyond conventional actuation, sensing and control typically found in fixed-morphology robots, self-reconfiguring robots are also able to deliberately change their own shape by rearranging the connectivity of their parts, in order to adapt to new circumstances, perform new tasks, or recover from damage.

<span class="mw-page-title-main">Legged robot</span> Type of mobile robot

Legged robots are a type of mobile robot which use articulated limbs, such as leg mechanisms, to provide locomotion. They are more versatile than wheeled robots and can traverse many different terrains, though these advantages require increased complexity and power consumption. Legged robots often imitate legged animals, such as humans or insects, in an example of biomimicry.

Howie Choset is a professor at Carnegie Mellon University's Robotics Institute. His research includes snakebots, or robots designed in a segmented fashion to mimic snake-like actuation and motion, demining, and coverage. His snake robots have also been used in surgical applications for diagnosis and tumor removal; nuclear power plant inspection, archaeological excavations, manufacturing applications and understanding biological behaviors of a variety of animals.

<span class="mw-page-title-main">Glossary of robotics</span>

Robotics is the branch of technology that deals with the design, construction, operation, structural disposition, manufacture and application of robots. Robotics is related to the sciences of electronics, engineering, mechanics, and software.

<span class="mw-page-title-main">Undulatory locomotion</span> Wave-like animal movement method

Undulatory locomotion is the type of motion characterized by wave-like movement patterns that act to propel an animal forward. Examples of this type of gait include crawling in snakes, or swimming in the lamprey. Although this is typically the type of gait utilized by limbless animals, some creatures with limbs, such as the salamander, forgo use of their legs in certain environments and exhibit undulatory locomotion. In robotics this movement strategy is studied in order to create novel robotic devices capable of traversing a variety of environments.

<span class="mw-page-title-main">Bio-inspired robotics</span>

Bio-inspired robotic locomotion is a subcategory of bio-inspired design. It is about learning concepts from nature and applying them to the design of real-world engineered systems. More specifically, this field is about making robots that are inspired by biological systems, including Biomimicry. Biomimicry is copying from nature while bio-inspired design is learning from nature and making a mechanism that is simpler and more effective than the system observed in nature. Biomimicry has led to the development of a different branch of robotics called soft robotics. The biological systems have been optimized for specific tasks according to their habitat. However, they are multifunctional and are not designed for only one specific functionality. Bio-inspired robotics is about studying biological systems, and looking for the mechanisms that may solve a problem in the engineering field. The designer should then try to simplify and enhance that mechanism for the specific task of interest. Bio-inspired roboticists are usually interested in biosensors, bioactuators, or biomaterials. Most of the robots have some type of locomotion system. Thus, in this article different modes of animal locomotion and few examples of the corresponding bio-inspired robots are introduced.

<span class="mw-page-title-main">CubeRover</span> Class of planetary rover

CubeRover is a class of planetary rover with a standardized modular format meant to accelerate the pace of space exploration. The idea is equivalent to that of the successful CubeSat format, with standardized off-the-shelf components and architecture to assemble small units that will be all compatible, modular, and inexpensive.

<span class="mw-page-title-main">Vandi Verma</span> Roboticist at NASAs Jet Propulsion Laboratory and driver of the Mars rovers

Vandana "Vandi" Verma is a space roboticist and chief engineer at NASA's Jet Propulsion Laboratory, known for driving the Mars rovers, notably Curiosity and Perseverance, using software including PLEXIL programming technology that she co-wrote and developed.

<span class="mw-page-title-main">Auke Ijspeert</span> Swiss-Dutch roboticist and neuroscientist

Auke Jan Ijspeert is a Swiss-Dutch roboticist and neuroscientist. He is a professor of biorobotics in the Institute of Bioengineering at EPFL, École Polytechnique Fédérale de Lausanne, and the head of the Biorobotics Laboratory at the School of Engineering.

<span class="mw-page-title-main">Exobiology Extant Life Surveyor</span> Jet Propulsion Laboratory Conceptual Probe

Exobiology Extant Life Surveyor, is a snakebot vehicle originally designed to explore the surface and the oceans of Enceladus, a moon of Saturn. The JPL has also referred to the possibility of using EELS to explore locations such as lunar lava tubes, Mars's polar caps, and Earth's ice sheets.

References

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  2. Liu, Jindong; Tong, Yuchuang; Liu, Jinguo (18 April 2021). "Review of snake robots in constrained environments". Robotics and Autonomous Systems. 141. ISSN   0921-8890 via Elsevier.
  3. Transeth, Aksel Andreas; Pettersen, Kristin Ytterstad (Dec 2006). "Developments in Snake Robot Modeling and Locomotion". 2006 9th International Conference on Control, Automation, Robotics and Vision. pp. 1–8. doi:10.1109/ICARCV.2006.345142. ISBN   978-1-4244-0341-7. S2CID   2337372.
  4. Liljebäck, P.; Pettersen, K. Y.; Stavdahl, Ø.; Gravdahl, J. T. (2013). Snake Robots - Modelling, Mechatronics, and Control. Advances in Industrial Control. Springer. doi:10.1007/978-1-4471-2996-7. ISBN   978-1-4471-2995-0.
  5. "Design and Motion Planning of a Mechanical Snake" (PDF). ykoren.engin.umich.edu.
  6. 1 2 "Carnegie Mellon Snake Robot Used in Search for Mexico Quake Survivors". www.cmu.edu. September 27, 2017. Retrieved November 18, 2024.
  7. Solberg, Eirik (20 September 2012). "Biorobotics Lab at CMU Creates Bio-inspired Snakebot".
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