The Army is building futuristic robots (which is awesome and terrifying)
If you ever watched “The Jetsons,” an animated sitcom (1963-1964) about a family living in fictional Orbit City in the 2060s, you likely remember the iconic depiction of a futuristic utopia complete with flying cars and robotic contraptions to take care of many human needs. Robots, such as sass-talking housekeeper Rosie, could move through that world and perform tasks ranging from the mundane to the highly complex, all with human-like ease.
In the real world, however, robotic technology has not matured so swiftly.
A major focus of much current research going on now at the U.S. Army Research Laboratory (ARL) is moving toward creating a robot like Rosie, capable of learning and executing tasks with the best precision and speed possible, given what we know about our own abilities.
NOT QUITE ‘INFINITE IN FACULTY’
In general, we can say that Rosie-like robot performance is possible given sufficient advances in the areas of sensing, modeling self-motion, and modeling interactions with the world.
Robots “perceive” the world around them using myriad integrated sensors. These sensors include laser range scanners and acoustic ranging, which provide the distance from the robot to obstacles; cameras that permit the robot to see the world, similar to our own eyes; inertial measurement sensing that includes rate gyroscopes, which sense the rate of change of the orientation of the robotic device; and accelerometers, which sense acceleration and gravity, giving the robot an “inner ear” of sorts.
All these methods of sensing the world provide different types of information about the robot’s motion or location in the environment.
Sensor information is provided to the algorithms responsible for estimating self-motion and interaction with the world. Robots can be programmed with their own versions of mental models, complete with mechanisms for learning and adaptation that help encode knowledge about themselves and the environment in which they operate. Rather than “mental models,” we call these “world models.”
‘IN FORM AND MOVING HOW EXPRESS AND ADMIRABLE,’ SORT OF
Consider a robot acting while assuming a model of its own motion in the world. If the behavior the robot actually experiences deviates significantly from the behavior the robot expects, the discrepancy will lead to poor performance: a “wobbly” robot that is slow and confused, not unlike a human after too many alcoholic beverages. If the actual motion is closer to the anticipated model, the robot can be very quick and accurate with less burden on the sensing aspect to correct for erroneous modeling.
Of course, the environment itself greatly affects how the robot moves through the world. While gravity can fortunately be assumed constant on Earth, other conditions can change how a robot might interact with the environment.
For instance, a robot traveling through mud would have a much different experience than one moving on asphalt. The best modeling would be designed to change depending on the environment. We know there are many models to be learned and applied, and the real issue is knowing which model to apply for a given situation.
Robotics today are developed in laboratory environments with little exposure to the variability of the world outside the lab, which can cause a robot’s ability to perceive and react to fail in the unstructured outdoors. Limited environmental exposure during model learning and subsequent poor adaptation or performance is said to be the result of “over-fitting,” or using a model created from a small subset of experiences to maneuver according to a much broader set of experiences.
At ARL, we are researching specific advances to address these areas of sensing, modeling self-motion, and modeling robotic interaction with the world, with the understanding that doing so will enable great enhancements in the operational speed of autonomous vehicles.
Specifically, we are working on knowing when and under what conditions different methods of sensing work well or may not work well. Given this knowledge, we can balance how these sensors are combined to aid the robot’s motion estimation.
A much faster estimate is available as well through development of techniques to automatically estimate accurate models of the world and of robot self-motion. With the learned and applied models, the robot can act and plan on a much quicker timescale than what might be possible with only direct sensor measurements.
Finally, we know that these models of motion should change depending on which of the many diverse environmental conditions the robot finds itself in. To further enhance robot reliability in a more general sense, we are working on how to best model the world such that a collection of knowledge can be leveraged to help select an appropriate model of robot motion for the current conditions.
If we can master these capabilities, then Rosie can be ready for operation, lacking only her signature attitude.
Also read: The Air Force had giant robots in the 1960s
For more information about ARL collaboration opportunities in the science for maneuver, go to http://www.arl.army.mil/opencampus/.
DR. JOSEPH CONROY is an electronics engineer in ARL’s Micro and Nano Materials and Devices Branch. He holds a doctorate, an M.S. and a B.S., all in aerospace engineering and all from the University of Maryland, College Park.
MR. EARL JARED SHAMWELL is a systems engineer with General Technical Services LLC, providing contract support to ARL’s Micro and Nano Materials and Devices Branch. He is working on his doctorate in neuroscience from the University of Maryland, College Park, and holds a B.A. in economics and philosophy from Columbia University.
This article will be published in the January – March 2017 issue of Army AL&T Magazine.
Subscribe to Army AL&T News, the premier online news source for the Acquisition, Logistics, and Technology (AL&T) Workforce.
This is the latest version of the M9 service pistol
The M9A3 offers a bigger magazine, a user-friendly grip, and a host of improvements based on lessons learned from over three decades of service.
This is what the DoD has planned for a zombie apocalypse
It does touch on many of the pop culture elements of zombie lore, but it breaks things down to become applicable to most situations that would similar to an actual outbreak.
Some dirtbags messed with an Iwo Jima memorial — and Marines caught 'em on film
Officials say an Iwo Jima memorial in Fall River was doused with the contents of a fire extinguisher last weekend. Police are investigating
Vets are going to get a new ID card, and they'll be ready for use next month
The new identification card will provide employers looking to hire veterans with an easier way to verify an employee's military service.
This is the story behind the rise and fall of the Islamic State group
The Islamic State group, responsible for some of the worst atrocities perpetrated against civilians in recent history, appears on the verge of collapse.
Now the Iraqi army is going after the Kurdish forces who helped beat ISIS
Iraqi federal and Kurdish forces exchanged fire on Oct. 20, capping a dramatic week that saw the Kurds hand over territory across Northern Iraq.
This Kurdish female militia refuses to stop its hunt for ISIS terrorists
A Kurdish female militia, after helping free the city of Raqqa, said it will continue the fight to liberate women from the extremists’ brutal rule.
The US just sent nearly 1M bombs and missiles to Guam — here's why
Hint: There's this guy a few thousand miles away who's threatening to lob a nuke in their direction.
This is what the 400 US troops in Somalia are actually up to
The US has quadrupled its military presence in Somalia after Al-Shabab killed nearly 300 civilians in two truck bombings. Half of them are special ops troops.