Tech

January 7, 2013

What a UAV can do with depth perception

Testing of the UAVís precision placement of a payload proved successful. An operator extends the robotic arm of the modified V-Bat UAV built by MLB Company of Santa Clara, Calif.

When a person reaches out to place an object in just the right place, their mind makes a series of judgments requiring vision, stability and careful movement.
Trying to do the same thing robotically from a hovering unmanned aerial vehicle requires several technology advances.

A DARPA-funded technology demonstration recently finished a successful testing of vision-driven robotic-arm payload emplacement using MLB Companyís (Santa Clara, Calif.) tail-sitter UAV, V-Bat. This UAV is capable of both hover and wing-borne flight, making the delivery and precision emplacement of a payload possible. A special robotic arm was designed with the capability of carrying up to 1 pound.

The research team designed and developed a low-cost vision system to estimate the targetís position relative to the hovering vehicle in real time. This vision system enables the UAV to search and find the target for the emplacement autonomously and then perform the action.

DARPA’s precision emplacement technology demonstration paves the way for precise long-range delivery of small payloads into difficult-to-reach environments.
ìOur goal with the UAV payload emplacement demonstration was to show we could quickly develop and integrate the right technology to make this work, said Dan Patt, DARPA program manager. ìThe success of the demonstration further enables the capabilities of future autonomous aerial vehicles.

During this technology demonstration, the MLB Company-built V-Bat successfully demonstrated:

  1. A newly developed stereo vision system that tracks the emplacement target and motion of the robotic arm. The vision system, coupled with global positioning system, controls the arm and V-Bat during emplacement.
  2. Control logic to maneuver the vehicle and direct the robotic arm to accurately engage the emplacement target.
  3. Vehicle stability with the arm extended 6 feet with a 1-pound payload.
  4. Autonomous search and detection of the emplacement target and autonomously emplaced a 1-pound payload.



All of this week's top headlines to your email every Friday.


 
 

 
Virgin Galactic photograph

NTSB concludes SpaceShipTwo flight test accident investigation

Virgin Galactic photograph WhiteKnightTwo and the first SpaceShipTwo during a captive carry test flight over the Mojave Desert. MOJAVE, Calif.–The National Transportation Safety Board has concluded the investigation of th...
 
 

Headlines July 27, 2015

News: U.S.-Turkey deal aims to create de facto ‘safe zone’ in northwest Syria – Turkey and the United States have agreed on the outlines of a de facto “safe zone” along the Turkey-Syria border under the terms of a deal that is expected to significantly increase the scope and pace of the U.S.-led air war against...
 
 

News Briefs July 27, 2015

Putin OKs maritime code calling for strong Atlantic presence Russian President Vladimir Putin has approved a new version of the country’s maritime doctrine that calls for maintaining a strong Russian presence in the Atlantic Ocean amid concerns about NATO expansion. The doctrine, which covers naval, merchant marine and scientific maritime issues, also adds the Antarctic...
 

 
Army photograph by SFC Walter E. van Ochten

U.S., Ukraine, Romania, Bulgaria train together at Rapid Trident 2015

Army photograph by SFC Walter E. van Ochten U.S. soldiers, of the 3rd Platoon, 615th Military Police Company, 709th Military Police Battalion, react as they conduct reacting to contact training as part of their situational trai...
 
 
nasa-astronaut

Astronaut Stephen Frick retires from NASA

Astronaut Stephen Frick has retired from NASA to accept a position in the private sector. Frick, who flew as both a shuttle pilot and commander, left the Agency July 13. Steve has been a great asset to the astronaut office and ...
 
 
Army photograph by Sgt. Juana M. Nesbitt

Estonian, US forces receive new jump wings

Army photograph by Sgt. Juana M. Nesbitt Pvt. Kalmer Simohov, of Parnu, a volunteer with the Estonian Defense League, receives his U.S. Army Airborne wings following the joint airborne operations exercise at a drop zone in Nurm...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>