Minh Tran Quang
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  • Hanoi
  • Vietnam
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A bug in AC3.1 inertial navigation code?

Started this discussion. Last reply by Minh Tran Quang Apr 8, 2014. 6 Replies

There may be a mistake in calculation of inertial navigation.This issue I've posted on ardupilot.com forum on APM:Copter>>3.1, but so far there is still no replies, so I post it again here with…Continue

 

Minh Tran Quang's Page

Latest Activity

Angelica Crespo replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"Hi Hafidz! Any updates on your findings? I am also working in an institution that works on UAVs and we have a project on Ardupilot. I was wondering if you have finished understanding the whole Ardupilot code and maybe you could share some of your…"
May 15
Angelica Crespo replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"Hi Minh! I am also tring to understand the whole code system of Ardupilot? Any updates on your findings? Thank you for uploading the first pdf. It has been really helpful on my research."
May 15
turdsurfer replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"Thanks for the helpful how-to. I think articles like yours could be a great addition to the developers wiki: http://dev.ardupilot.com/wiki/learning-the-ardupilot-codebase/"
Mar 7, 2016
Minh Tran Quang replied to Forrest Frantz's discussion No HeatBeats from Mavlink -- The Saga Continues now w/ PixHawk
"I haven't got support from 3DR, but after reading other posts on the forum, I decided to replace the SD card. After replacing SD card, all things went well."
Jul 26, 2015
Minh Tran Quang replied to Forrest Frantz's discussion No HeatBeats from Mavlink -- The Saga Continues now w/ PixHawk
"Thank you, I'll follow your advice."
Jul 22, 2015
Minh Tran Quang replied to Forrest Frantz's discussion No HeatBeats from Mavlink -- The Saga Continues now w/ PixHawk
"Hello all, I have the same issue. I have a pixhawk board, I could upload AC3.2 firmware but then I can't connect the board to the mission planner. I tried different things: connect/disconnect GPS/compass modul, tried on different USB port, even…"
Jul 21, 2015
Jun Fu replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"thanks very much, it's very helpful to me."
Jun 5, 2015
صلاح الحكيمي replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"hi i can not download this (pdf)  why?"
Oct 24, 2014
eric replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"the address you provided is very helpful but I can't solve your problem"
May 8, 2014
Hafidz M. replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"Thank you for sharing your findings... I am now also in the initial process of understanding the whole Ardupilot codes... I will share my findings as well though I cannot give an explicit date for that. Right now I am interning at a company that…"
Apr 12, 2014
Minh Tran Quang replied to Minh Tran Quang's discussion A bug in AC3.1 inertial navigation code?
"In that commit I don't see the fix for correct_with_baro(). In the commit we've checked if buffer if buffer is full then get the delayed sample at the front, otherwise get the current sample. If the buffer is not full it's true that…"
Apr 8, 2014
Jonathan Challinger replied to Minh Tran Quang's discussion A bug in AC3.1 inertial navigation code?
"Hi, this bug has been fixed since this commit was made: https://github.com/diydrones/ardupilot/commit/e23135faa1fab89822c569253fa3b5e2ce7034fc"
Apr 7, 2014
Minh Tran Quang replied to Minh Tran Quang's discussion Learning to program Arducopter in the group Learning to program the Ardupilot Mega
"Now I've better understanding of the code, including AP_InertialNav library.So here I include the new pdf file."
Apr 7, 2014
Minh Tran Quang replied to Minh Tran Quang's discussion A bug in AC3.1 inertial navigation code?
"IMO for the cyclic buffer with the number of samples = size = 15, the delay is 15 samples, so if now we get the baro data, it means that the inertial calculation for that data was 15 samples ago, or it should be at the beginning of the buffer, the…"
Apr 7, 2014

Developer
Randy replied to Minh Tran Quang's discussion A bug in AC3.1 inertial navigation code?
"Hmm, really?  I heard a similar report (perhaps the opposite) in AC3.0.1 from neurocopter and we fixed it for AC3.1. Of course it's possible that it was correct for AC3.0.1, neurocopter was wrong and I agreed with him and made it…"
Apr 7, 2014
Minh Tran Quang replied to Minh Tran Quang's discussion A bug in AC3.1 inertial navigation code?
"It seems that no one wants to reply. May I ask from Randy, an expert in this field in my view, that what does he think about this issue, am I right or wrong?"
Apr 7, 2014

Profile Information

About Me:
I have a knowledge of micro controller in general
Please tell us a bit about your UAV interest
I'm interested in fixed wing UAV
Hometown:
Hanoi

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