Jeff Barton
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  • Laurel, MD
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av9 commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Alright, now I have clear. Another doubt I have is, according to your filter, in order to use some real data, it has to be done filling the "uavSensors.gyro_wb_rps", "uavSensors.accel_fb_mps2" and…"
Sep 19
Jeff Barton commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Yes, when you extract Euler angles, one of them will generally be between [-90, 90], and the other two will be between [-180, 180].  But, as discussed above, you can alter the method to find equivalent orientation representations.  (i.e.…"
Sep 3
av9 commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Hi Jeff, thanks for your reply. In any case, one of the angles must be always between [-90,+90], and when you reach this value the other two angles do some kind of rotation due the gimbal lock, so it's impossible to represent the three angles…"
Sep 2
Jeff Barton commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"av9: I'm glad your finding the paper and code useful.  I believe what you are seeing is not an issue with the filter mechanization, but rather with the Euler angle extraction method.  As we extract the roll/pitch/yaw Euler angles from…"
Sep 1
robert bouwens commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"hi jeff, yes, updating from 3.2 to 3.6.2 solves most issues. i am surprised how it works! continue to play with it. i have a simpler example to filter the accelerometer values. will be very interesting to see the kalman filter in real action."
Nov 22, 2012
Jeff Barton commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"@robert, As far as I can tell, qtoctave seems to be discontinued.  However, I did try running the Matlab routines using (the free) GNU Octave for Windows.  To my pleasant surprise, all the UAV State Estimation Matlab routines ran…"
Nov 21, 2012
robert bouwens commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"@jeff, i played with qtoctave - so far the mat files cannot be read. plus the directory handling is different. need to grab some flight data for transfering it as static data into octave.   have you exported some of your functions into…"
Nov 21, 2012
Massimo V. commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"I read every word too! Thanks so much for sharing. I hoped to find a paper like this from long time, and now... I found this gift! Thank you very very much, it's clear, exhaustive and even simpler than expected!"
Nov 14, 2012
Harry commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"I got a kick out of the "about the author" - crashed UAV's in 8 states and walked away from each incident.  Dont try that in a C-150.  Thanks for the ariticle, the pictures help somebody like me with only a very…"
Nov 14, 2012
Rob_Lefebvre commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"I have only skimmed this, but I liked the section on Longitudinal Flight Control starting on page 145. I've been trying to solve this control problem for helicopters.  In hovering, or slow, climbing flight, Fig 16 applies.  In high…"
Nov 14, 2012
robert bouwens commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"jeff, my 'control law' person in the office is quite busy. today i found out that i might be able to create 'c' code from the matlab code - we have a matlab realtime studio license. for myself i can say that i will try gnu octave…"
Nov 14, 2012
W. Joe Taylor commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Jeff, Many thanks for the article & code links. David, How's the revolution code for gps way point nav going? I am hoping to get into some of the cc3d code soon and rev code too if I have time. (Have 6 more weeks to wait until cc3d…"
Nov 14, 2012
Jeff Barton commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Many thanks for the nice words. I couldn't even begin to count the hours that went into the paper and the code, so I very much hope that someone has found it useful. Robert: I have not tried porting the Matlab code to an open source…"
Nov 14, 2012
Dave G commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"I read every word.  As a developer looking to get into contributing to OpenPilot, this was a fantastic overview, from strategies right down to the matrix math.  Nice work! "
Nov 14, 2012

Developer
Craig Elder commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"Thanks Jeff! That is a fabulous article. "
Nov 13, 2012
robert bouwens commented on Jeff Barton's blog post Fundamentals of Small Unmanned Aircraft Flight
"jeff, thanks so much for sharing and huts of! i would like to run parts through a simulation.what package would you suggest:  - scilab  - gnu octave i am not having the budget for matlab. thanks! robert"
Nov 13, 2012

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About Me:
Engineer in the UAV research field
Please tell us a bit about your UAV interest
UAV researcher
Hometown:
Laurel, MD

Jeff Barton's Blog

Fundamentals of Small Unmanned Aircraft Flight

Posted on November 12, 2012 at 12:32pm 20 Comments

 Being involved in UAV research, I've been a member and a great admirer of this community for a number of years.  An article I wrote (Fundamentals of Small Unmanned Aircraft Flight) has recently been…

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