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The new formula for military scientists is leading to new insights into energy-efficient construction foot robots. Lately peer-reviewed PLOSE One paper, U.S. Army Combat Capability Development Command, known as DEVCOM, Doctors of the Army Research Laboratory. Alexander Kott, Sean Gart, and Jason Pusey offer new insights into building autonomous military robotic platforms to work as efficiently as other terrestrial mobile communication systems.
Its use could potentially lead to significant changes in the development of military vehicles. The researchers say they may not know exactly why the legs, wheels and tracks still fit the same curve, but they are confident that the findings will continue to drive research.
“If vehicle developers find a particular model requires more power than is currently possible given the different constraints of the real world, the new formula may refer to specific needs to improve powertrain and production or rethink vehicle mass and speed requirements.”
Inspired by a 1980s formula that shows relationships to animal mass, speed, and power consumption, the team developed a new formula that applied to a very wide range of foot, wheel, and track systems, such as motor vehicles and land robots.
While much of the data has been available for 30 years, this team believes they will be the first to actually compile it and study the relationships that emerge from that data. Their findings show that foot systems are as effective as on wheels and crawler platforms.
“In the world of unmanned fighter jets and intelligent ammunition, there is an increasing role for detached infantry that can move forward, often for several days, and attack the most cluttered terrain, such as mountains, dense forests, and urban environments,” Kott said. , who is the lead researcher in the laboratory. “This is because such terrain offers maximum protection and hiding against unmanned aerial vehicles. This in turn requires that detached infantry be assisted by vehicles that can move easily in such broken terrain. Pedestrian vehicles – possibly independent – would be very useful.”
One of the problems with foot robots, Kott said, seems to be their poor energy efficiency, which limits cooperation with soldiers on hard battlefields.
“Over the past 30 years, U.S. military researchers have faced several challenges in developing autonomous vehicles,” Kott said. “Wheeled or rail-powered land vehicles and small airplanes, which we call fixed-wing, and small helicopters that are rotary-wing, are now quieter and more easily integrated into troop assemblies. But on foot platforms, many obstacles are still incomprehensible, and a huge hurdle makes them energiate “
Soldiers can’t afford to carry fuel or batteries for “energy-thirsty leg robots,” he said.
The study examines whether artificial earthing systems have a uniform trend between mass, power, and velocity.
As a starting point, the working group examined a scaling scheme proposed in the 1980s to estimate the mechanical power carried by a given mass animal at a given speed and compared this to artificial mechanical systems of varying size, weight, and power that are independent or human-controlled.
The group found the answer to its research question: a similar, consistent relationship actually applies to earth-moving systems, including different types of vehicles with a wide mass mass.
Kott said this relationship surprisingly turned out to be essentially the same in foot, wheeled, and track systems. These findings suggest that man-made footrests should be as effective as wheels and crawler platforms, he said.
To conduct this study, the team collected various mobile system data from a literature review of previous studies and published materials.
They studied a wide range of sizes and morphologies in a data set that combined systems including, for example, a 17th-century British cannon, a Ford Model T, an M1 Abrams tank, and an ACELA train.
Gart said their research is relevant to the design of mobile communication systems because it helps designers determine the trade-offs between power, speed, and mass for future terrestrial robots for defense applications.
One of the military’s goals is to develop new types of independent or semi-independent ground vehicles to supply supplies to soldiers in challenging areas, he said.
“To pull supplies, it needs to be able to carry a certain weight or mass at a certain time or speed,” Gart said.
The formula can estimate the amount of power a vehicle needs, the researchers said.
“The military needs to develop feasible but ambitious targets for trade-offs in power, speed and mass for future terrestrial robots,” Kott said. “It is not desirable to base such goals on current experience, as military equipment is often developed and used for many years and even decades; therefore, manufacturers and designers of such equipment must base their goals – competitive but achievable – on future technological possibilities that may not be fully understood at design time. . “
The formula developed in this article provides such a goal and could allow the military to predict the future performance of ground planes, such as foot robots, given design constraints such as vehicle and engine weight and desired speed, he said.
Editor’s Note: This article was republished in the U.S. Army DEVCOM Army Research Laboratory on Public Affairs.