QTAR: Quad Thrust Aerial Robot 2005
The Quad Thrust Aerial Robot (QTAR) was my (Joshua Portlock's) final year Mechatronic Engineering Project in 2005 at Curtin University of Technology.
It is a quadrotor VTOL UAV with a 200 gram payload capacity and 15-20 minute flight endurance (depending on battery capacity and payload). I designed the attitude estimation and control system, which controls the pitch and roll angles within 15 degrees from level hover.
I was furthering my research of VTOL UAVs by undertaking my PhD, but have put that on hold while I'm working full-time at a flight technology company called Entecho, who are developing a radial fan thrust-levitating personal flying platform and a UAV version too. Check out the website at http://www.entecho.com.au if you're interested. Feel free to contact me if you have any questions or want to share some knowledge about VTOL UAVs.
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3D Robotics Comment by Chris Anderson on November 16, 2008 at 9:08pm -
Nice work! Can you tell us a little about your microprocessor and sensors? Is it all custom?
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Comment by Joshua Portlock on November 17, 2008 at 3:13am -
Hi Chris, thanks.
I built this on a very low budget (<$800 AUD), so I used an 8-bit Atmel AVR, three Tokin CG-16D0 Gyros (which I think are discontinued now, but Murata make some equivalent) and two ADXL202 dual-axis accelerometers (as this was before triple axis accelerometers were so common and cheap). I also toyed with an ultrasonic sensor for altitude control and bluetooth modules for in-flight gain tuning and telemetry down-link.
Cheers,
Josh
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Comment by SIMON SOE on May 19, 2009 at 6:07am -
Hi Josh ,
Interesting project and nice work.
Did u use brush DC motor ?
Did you use PWM to drive DC motor?
How do you synchronize 4 motor ?
Regards
Simon
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