Mark Arnott
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  • Vancouver, BC
  • Canada
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ned commented on Mark Arnott's blog post UAV School Project
"Hi  Mark Arnott, thanks for the reply. Currently i am doing my final year project and my supervisor cant seem to help me at all.Hence, i have to do all by myself.I have very little knowledge in both programming and uav.That makes my life…"
Jan 6
Mark Arnott commented on Mark Arnott's blog post UAV School Project
"Hi Ned, The downfall of fuzzy logic is you can't mathematically find parameters from a system model like you can with linear processes and PID control loops. That said with fuzzy logic it is more intuitive. eg: flying too low and still going…"
Jan 6
ned commented on Mark Arnott's blog post UAV School Project
"Hi Mark Arnott, Currently i am doing the similar project as you on fuzzy logic in uav. However, i am facing some obstacles with fuzzy logic programming. what i am doing now is using conditonal if then P = certain values. ( eg. if…"
Jan 6
Sebastian Gralla commented on Mark Arnott's blog post UAV School Project
"yes, it will work"
May 15, 2011
Flávio Henrique P. de Oliveira commented on Mark Arnott's blog post UAV School Project
"Sebastian Gralla, how can I make a Turnigy Plush work faster than 50Hz? Can I change the PWM period lower than 20ms and it will works?"
May 15, 2011
Flávio Henrique P. de Oliveira commented on Mark Arnott's blog post UAV School Project
"I'm having the same problem... it won't change much to use a faster loop if my ESC works on 50Hz... For altitude, I would use only sonar for lower altitude and for higher altitude pressure + accel integration. You can use a lowpass filter…"
May 15, 2011
Sebastian Gralla commented on Mark Arnott's blog post UAV School Project
"Servos work up to 50Hz, that's correct. ESCs can work much faster, most are capable of about 1kHz, turnigy's can do faster (I heard of 4.7kHz).   control loop for altitude can run slower (about 10Hz is enough), if you have all those…"
May 15, 2011
Mark Arnott commented on Mark Arnott's blog post UAV School Project
"I have a few Q's regarding using a faster loop rate.  Don't the servos and ESC PWM only run at speeds from 20-50 Hz?  If that is the case I wouldn't really be controlling the craft faster, just doing more…"
May 15, 2011
Sebastian Gralla commented on Mark Arnott's blog post UAV School Project
"50Hz is too slow for a stable multirotor you have enough cpu power, go for 500Hz"
May 15, 2011
Mark Arnott commented on Mark Arnott's blog post UAV School Project
"I've written my own flight 3d simulator from first principles in C# that works quite will and have mainly used that to built up my initial algorithms. I then do some tuning with the craft tethered.  As you can see, I need to…"
May 14, 2011
Flávio Henrique P. de Oliveira commented on Mark Arnott's blog post UAV School Project
"Great! What kind of ESC are you using?"
May 14, 2011
Fabien Bruning commented on Mark Arnott's blog post UAV School Project
"Are you using Simulink for your control design, or writing C code by hand? I was wondering if you know the kind of overhead you get in that case, e.g. what's your CPU usage so to speak."
May 14, 2011
Sebastian Gralla commented on Mark Arnott's blog post UAV School Project
"maybe you should work on your attitude control algorythm first before you go for altitude hold it's very unstable how fast is you control loop?   check out some videos of arducopter, it has only one 16Mhz cpu for flight AND navigation"
May 14, 2011
Jack Crossfire commented on Mark Arnott's blog post UAV School Project
"You're right.   A "floating" camera mount would have been easier, but it's a degree."
May 13, 2011
Mark Arnott posted a blog post

UAV School Project

Here is a quick vid of my final project I'm building in electrical engineering. It's a tricopter UAV with thrust vectoring. As of now I have implemented roll, pitch stabilization, yaw and height are controlled by the aircraft. I just control the x and y movement.All the control algorithms use fuzzy logic. Why? To be different... and to overcome a lot of the limitations associated with PID's and nonlinear processes.The craft has 3 motors, and 5 servos. The front two motors can pitch forward and…See More
May 13, 2011

Profile Information

About Me:
4th year Electrical Engineering student
Please tell us a bit about your UAV interest
Build/building a tricopter for my final project.
Hometown:
Vancouver Island

Mark Arnott's Blog

UAV School Project

Posted on May 13, 2011 at 8:30pm 14 Comments





Here is a quick vid of my final project I'm building in electrical engineering. It's a tricopter UAV with thrust vectoring. As of now I have implemented roll, pitch stabilization, yaw and height are controlled by the aircraft. I just control the x and y movement.



All the control algorithms use fuzzy logic. Why? To be different... and to overcome…

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