Archive for the ‘UAV’ Category

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News: Autonomous Helicopter from Stanford

September 12, 2008

Professor Andrew Ng, center, and his graduate students Pieter Abbeel, left, and Adam Coates

Professor Andrew Ng, center, and his graduate students Pieter Abbeel, left, and Adam Coates

Stanford computer scientists have developed an artificial intelligence system that enables robotic helicopters to teach themselves to fly difficult stunts by watching other helicopters perform the same maneuvers.

The result is an autonomous helicopter than can perform a complete airshow of complex tricks on its own.

The stunts are “by far the most difficult aerobatic maneuvers flown by any computer controlled helicopter,” said Andrew Ng, the professor directing the research of graduate students Pieter Abbeel, Adam Coates, Timothy Hunter and Morgan Quigley.

The dazzling airshow is an important demonstration of “apprenticeship learning,” in which robots learn by observing an expert, rather than by having software engineers peck away at their keyboards in an attempt to write instructions from scratch.

Stanford’s artificial intelligence system learned how to fly by “watching” the four-foot-long helicopters flown by expert radio control pilot Garett Oku. “Garett can pick up any helicopter, even ones he’s never seen, and go fly amazing aerobatics. So the question for us is always, why can’t computers do things like this?” Coates said. Read the rest of this entry ?

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System Identification

January 9, 2008

In this project, we used the parameter identification approach instead of using the theoretical model. So we use the System Identification Toolbox 7.0 in Matlab R2007a as a tool for that kind of approach. The first step is to prepare the flight data for identification. In this step, I removed the data means by using ‘detrend’. Then, the detrended data was divided into two parts. The first is for the estimation data and the second one is for the validation data. Read the rest of this entry ?

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