About

Gender

Male


Location

Pipe Creek, TX


About Me:

I'm a controls engineering student at the University of Texas at San Antonio.


Please tell us a bit about your UAV interest

I'm developing a fuzzy logic controller for a traditional heli. Arducopter is looking particularly appealing because it solves most of the problems of systems integration up front. I'm looking to contribute to the code by adding a fuzzy feedback controller as a substitute for PID, and I hope to contribute where I can in getting HIL simulation working for traditional helis.


Hometown:

San Antonio, TX


Activity Feed

Chris Pitts replied to Chris Pitts's discussion Can ArduPilot be managed to comply with DO-178C?
"This has been a really educational experience for me. Thanks to Stephen and Chris A. for coming in and setting the record straight.
So the way I understand this now, is that anyone can come in and grab the code, and run it through the certification…"
Nov 15, 2012
Chris Pitts posted a discussion
With full commercial integration of UAS on the horizon for 2015, open-source projects like ours have the potential to erradicate barriers to entry into the UAS marketplace.The regulations involved with getting software certified by the FAA are prett…
Nov 14, 2012
Chris Pitts replied to Chris Pitts's discussion Stupid noob question, but I need help quick!
"Alrighty, so the demo was fairly successful. My professor is definitely satisfied with the performance of the fuzzy controller.
 
On that note, I'll be posting it soon. I need to write up some documantation describing its features and limitations. E…"
Oct 31, 2012
Chris Pitts posted a discussion
Sorry for not RTFM'ing this, but I actually have an urgent need for a piece of info that I can't seem to find. I demo my fuzzy controller to one of my professors in an hour, and I haven't figured out how to make the GCS do what I need it to do. All…
Oct 31, 2012
Chris Pitts replied to Shyam Balasubramanian's discussion AR.DRONE Vs DIY-DRONES (Question session)
"As I understand it, AR.Drone is solely based on quads, where as the APM can fly traditional helis and fixed wings, among other things.
The Parrot our lab uses does not have GPS, but I'm not sure if this is true for all AR.Drones. the parrot used opt…"
Oct 25, 2012
Chris Pitts posted discussions
Oct 24, 2012
Chris Pitts replied to Chris Pitts's discussion Moving to a flybarred Raptor 90 from my TREX 450 FBL.
"Make that a TREX 450* Not sure why I can't edit the original post."
Oct 24, 2012
Chris Pitts replied to Chris Pitts's discussion TREX 450 APM 2.0 crash after controls locked up in flight.
"Alrighty! good progress!
Looking at what the controller is doing, the stability controller is basically just setting how fast the system will allow the heli to turn. I've got it set at 5.0 now, and the heli is quite snappy.
After that, standard PID…"
Oct 22, 2012
Chris Pitts posted a discussion
Here's a tutorial on exactly what PID control does for this type of system. I know I'm probably preaching to the choir for most of this, but for anyone that's never had any formal training on control systems, maybe this will help put things together…
Oct 22, 2012
Chris Pitts replied to Chris Pitts's discussion TREX 450 APM 2.0 crash after controls locked up in flight.
"Looks like the Rate Yaw I component is set to zero for some reason.
Question: When the system takes in stick movements to determine its desired heading, does the APM software interpret the control signal as a desired heading, or as a desired yaw rat…"
Oct 19, 2012
Chris Pitts posted a discussion
Hey guys,Not sure if anyone remembers, but Craig and I were working on the fuzzy logic attitude controller. That project's going nicely, and we've got it controlling pitch and roll in the HIL simulation environment. But we've run into a pretty big S…
Oct 16, 2012
Chris Pitts replied to Chris Pitts's discussion Hardware-in-the-loop for traditional helicopter drones in ArduCopter (traditional heli) user group
"Hey guys! Here's an update!
 
The simulator works great, but there's a little problem taking it out of HiL mode.  When I set the code up to run the APM2 hardware, and turn off HIL, it doesn't look like the accelerometer data is being used. I get sup…"
May 4, 2012
Chris Pitts posted a discussion in ArduCopter (traditional heli) user group
Hey guys, I've got my T-Rex 450 all set up. I loaded the stock software with the stock PID values. It held stable fairly well, but I got no rudder when I moved the stick. Then, I changed the P values for rate and stabilize on the rudder. I got a mov…
Mar 29, 2012
Chris Pitts replied to derfuchss's discussion laggy steering response with APM 2560
"Same Problem on my new APM 2.0. acro and stabilize.
 
The feedback from the gyros seems to be super nice and responsive, but control inputs only seem to get updated at about 4Hz. Is this normal?"
Mar 27, 2012
Chris Pitts replied to malcolm churn's discussion ArduCopter Traditional Heli (was: "600-size heli")
"Next noob question regarding the camera. I've seen the 3DR pitch/roll gimble, but I was wondering if there's a good setup out there that will let me swing the camera around and use the camera to track ground coordinates all Predator style. If anyone…"
Mar 18, 2012
Chris Pitts replied to malcolm churn's discussion ArduCopter Traditional Heli (was: "600-size heli")
"Noob question time: Does the forum have an option to search a single thread? I'd like to search this thread to see if my quuestion has already been answered, but 117 pages is too much for me. My eyes glazed over at about page 25.
If you'll forgive m…"
Mar 18, 2012
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