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Tim Trueman's Discussions

Can I find the magnetic components from magnetic heading and pitch/roll/yaw?

Started this discussion. Last reply by Héctor García de Marina Mar 14, 2010. 6 Replies


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Podcast episode 27: Richard Hanson describes the possible futures for UAVs in the National Airspace (NAS)

Posted on July 20, 2010 at 12:48pm 5 Comments

Richard Hanson, who works on the AMA's Regulatory and Governmental Affairs operations. The regulatory process to introduce UAVs in the National Airspace (NAS) is a long, tortured and potentially disastrous ordeal for us. If it goes well, we'll be given guidelines or laws under which to operate, which create a category for small amateur UAVs that allows us to… Continue

Call for podcast guest suggestions (numero dos)

Posted on July 13, 2010 at 2:12pm 16 Comments

I realize we've asked for suggestions before but I thought it was time to start a new thread and perhaps get some new and timely suggestions. Feel free to repeat ones from the last post again if you'd still like to get them on the show.

Who would you like to hear interviewed?

Cooperative Grasping and Transport using Quadrotors (new video from Daniel Mellinger, our last podcast guest)

Posted on July 12, 2010 at 11:28am 12 Comments

I can only imagine what happens if you were to use much larger… Continue

Comment Wall (4 comments)

At 1:44am on December 12, 2009, automatik said…
Hi Tim,
I am about to look at x-plane for some potential simulation work, and I *think* you mentioned in some post/podcast (which I can't find) that x-plane reversed reporting of p,q,r values - or something to that effect. Am I remembering this right? I would expect that p is rotation around x-axis, q is rot. around y-axis, and r around z axis -- is this how x-plane is reporting it or is there a discrepancy? Also, do you know if x-plane's reported values for accelerations ( ax,ay,az) are already adjusted for centrifugal acceleration or not? Any other data "gotchas"? Thanks!
At 1:49am on December 12, 2009, Tim Trueman said…
Well the beautiful thing is you can output the data you want to the screen and fly it. That we you can test it by doing wing down and use gravity to see what it is outputting and just adjust it to what you need. It's labeled in the on-screen display but just in an order I wouldn't have guessed. If you have any issues feel free to ask me.
At 2:38am on February 15, 2011, Jin said…
Hi, Tim. Do you know the control algorithm about quadrotor? Could you help me about the control algorithm design. I was design the autonomous quadrotor. But I found that the paper mapping algorithm couldn't use for the quadrotor. Do you know the person Daniel Mellinger? I have seen his work and it was very cool.
At 2:39am on February 15, 2011, Jin said…
I was now tunning the PID controller but now was not stable when roll and pitch channels combined together. My email address is yaojingmas@yahoo.com.cn . Thanks.

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