Simulation Of Quadrotor in LABVIEW

[Rocky Balboa]

Hi, I have a quadrotor design which flies like an "X" instead of the usual "+" norm.

My throttle and rudder control works perfectly fine.

However, my ELEVATOR input does not result in the 2 pairs of motor working inversely with the other 2.

This design is done by varying the torque of the motor.

I have attached my Simulation file.Any assistance rendered will be much appreciated.

|MAVERICK|

[vernyew.lim]

Hi there,

When you say your ELEVATOR input, do you mean the input named "inElevator"? I presume it is, because that is the only numeric control on your VI that has anything whatsoever to do with elevator.

If that is what you mean, then the only reason the input "does not result in the 2 pairs of motor working inversely with the other 2." is because you programmed it that way. Referring to the attached image, you can see clearly the red line traces all the wires, functions and indicators that are ever affected by the inElevator control, and it only affects Motor A and Motor D (speaking of which, Motor A and Motor D are always identical, just as Motors B and C, is that intentional?). Therefore, there is no way that the "2 pairs of motor working inversely with the other 2" just by changing the inElevator control.

Please do clarify for me if I am wrong in my assumption of which input you mean.

[vernyew.lim]

Forgot attachment, here it is.

[Ben_B]

I realize that I'm potentially a little late to chime in on this thread.  However, I've been working on a quadrotor project of my own. It was almost ready to go at NI Week, but there were a few stability issues.  Our goal is to have it up and flying by the end of November.

Regardless, I've been trying to write down some of my thoughts about the technical aspects of the build (hardware, electronics, modeling, simulation, control, and eventually autonomous flight).  You might find some of it helpful.  You can find the blog at:

http://decibel.ni.com/content/blogs/quadrotor

Let me know if you catch any errors or if you have any feedback about how I might make the blog more interesting / readable.

~Ben