?ETRobo Raven Fools Hawks Robotic Bird

A hawk attacks the Robo Raven， a remarkably lifelike robotic bird. Credit： YouTube screen grab from Maryland Robotics Center View full size image

Hawks and other birds of prey are famous for their keen eyesight.

But researchers have created a robotic bird so lifelike that it‘s even fooled hawks， which swoop down and attack it the way they would any other pigeonlike bird.

Developed at the Maryland Robotics Center， the robot — dubbed Robo Raven — is made of carbon fiber; 3D-printed， lightweight， thermal-resistant plastic; foam; and silvery Mylar foil （for its wings and tail）， Military.com reports. ［Image Gallery： Remarkable Bionic Animals］

Robo Raven is almost 2 feet long （60 cm） and weighs less than a can of soda. Its original design was developed in 2007 by University of Maryland professors S. K. Gupta and Hugh Bruck， who carried the battery-powered bird through several evolutions before arriving at the current model.

The long lead time was necessary because， during the trial-and-error process needed to improve the robotic bird， any error would lead to a crash. This would sometimes destroy the robot， so each step in the design process was painstakingly slow.

What makes the current model so realistic is its ability to move each wing independently of the other， just as real birds do. This enables the Robo Raven to swoop， soar， dive and flap its wings in a much more aerobatic way than older models， whose wings could only move simultaneously.

“Our new robot， Robo Raven， is based on a fundamentally new design concept，” Gupta said in a news release. “It uses two programmable motors that can be synchronized electronically to coordinate motion between the wings.”

Some of the design improvements to the Robo Raven were inspired by designs found in nature. For example， the robot uses a hollow framework to provide a stiff， lightweight structure; real birds use a hollow skeletal system for the same task.

The robot is guided by a handheld radio that controls its flight. Some of the funding for the Robo Raven was provided by the U.S. Army Research Laboratory， which is investigating the Robo Raven’s possible uses for surveillance and other missions.

The Robo Raven “attracts attention from birds in the area，” John Gerdes， an engineer at the Army’s Aberdeen Proving Ground in Maryland， told Military.com.

Whereas seagulls and other birds try to fly in formation with the Robo Raven， raptors like hawks have tried to attack the bird as quarry.

“Generally， we don’t see them coming，” Gerdes said. “They will dive and attack by hitting the bird from above with their talons; then， they typically fly away.”

Follow Marc Lallanilla on Twitter and Google+. Follow us @livescience， Facebook & Google+. Original article on LiveScience.com.

自動翻譯僅供參考

Robo Raven成功騙過老鷹 Robo愚人節烏鴉老鷹機器人Bird

一只老鷹攻擊機器人烏鴉，是一個非常逼真的機器人鳥。圖片來源：YouTube的屏幕抓取馬里蘭機器人中心查看原圖

老鷹和猛禽等鳥類是著名的敏銳的眼力。

但是，研究人員已經創造了一個機器人鳥如此逼真，它甚至上當鷹派，它俯沖下來，并攻擊它他們的方式對待其他pigeonlike鳥。

開發在馬里蘭州機器人中心，機器人＆mdash;被稱為機器人烏鴉＆mdash;是由碳纖維制成; 3D打印，重量輕，耐熱的塑料;泡沫;和銀色麥拉鋁箔（它的翅膀和尾巴），Military.com報告。 卓越的仿生動物Image Gallery： Remarkable Bionic Animals其最初的設計是由美國馬里蘭大學教授SK Gupta和休·布魯克，誰通過幾次變陣到達當前模型之前攜帶的電池供電的鳥于2007年制定。

長的準備時間是必要的，因為，在中試以改善機器鳥需要-error過程中，任何錯誤會導致系統崩潰。這有時會破壞機器人，所以在設計過程中的每個步驟是極為緩慢。

是什么讓當前的模型如此現實是它能夠獨立地移動的其他的每個機翼，就像真正的鳥事的能力。這使得機器人烏鴉趁虛而入，一飛沖天，下潛和扇動它的翅膀比老款車型，它的翅膀只能同時移動。

u0026 更加特技飛行的方式;我們的新機器人，機器人烏鴉，是基于一種全新的設計理念，與 古普塔在新聞發布會上說。 它使用能被電同步以協調翼之間運動兩個可編程馬達

某些設計改進的機器人烏鴉是由天然存在的設計靈感。例如，機器人使用的中空框架，以提供一個剛性輕質結構;真正的鳥類使用的中空骨骼系統完成同樣的任務。

通過控制其飛行手持無線電制導的機器人。有的為機器人烏鴉的資金是由美國陸軍研究實驗室，正在調查該機器人烏鴉的規定; S可能的用途監控等任務。

的機器人烏鴉 吸引注意力從鳥類在該地區，與 約翰·杰茲，一名工程師在軍隊大局;阿伯丁在馬里蘭試驗場，告訴Military.com 。

而海鷗等鳥類嘗試在形成與機器人烏鴉飛，像老鷹猛龍隊試圖攻擊鳥的采石場。

一般情況下，我們看不到它們的到來， 杰茲說。 他們會潛水，并攻擊從上面與他們的爪子打小鳥;然后，他們通常飛走