Gender
Male
About
Location
Madrid
Please tell us a bit about your UAV interest
fixed-wing
Activity Feed
"@Ayush
In a GNC scheme (Guidance, Navigation and Control). The N(avigation) module feeds the G and the C.
It does not matter the supernice is your controller or guidance if your estimations are far from the actual values."
In a GNC scheme (Guidance, Navigation and Control). The N(avigation) module feeds the G and the C.
It does not matter the supernice is your controller or guidance if your estimations are far from the actual values."
"By the way, will be the hardware schematics open source as well?"
"Congratulations Bill,
I still hope to have free time for continuing developing this kind of stuff. UKF is a great estimator indeed, I will check out the code for seeing your implementation :P."
I still hope to have free time for continuing developing this kind of stuff. UKF is a great estimator indeed, I will check out the code for seeing your implementation :P."
"sure, I will contact you by mail"
"Hello Prindi,
about TRIAD, you can download the dcm_estimation.pdf. The implementation in Matlab is quite straightforward, you only have to type literally what is in the equations, there is not black magic.
Recently the Kalman Filter entry at…"
about TRIAD, you can download the dcm_estimation.pdf. The implementation in Matlab is quite straightforward, you only have to type literally what is in the equations, there is not black magic.
Recently the Kalman Filter entry at…"
"Hello Prindi, Unfortunately I do not have an English version of the thesis. Nevertheless you can download the paper here:…"
"getting started with a frame that lasts only one crash? xD"
"@Max
All filters (transfer functions) introduces lag (phase delay), and in a closed loop, this lag can lead to instabilty of the closed loop system.
One thing is that the lag introduced don't lead to the instability, which as well depends on your…"
All filters (transfer functions) introduces lag (phase delay), and in a closed loop, this lag can lead to instabilty of the closed loop system.
One thing is that the lag introduced don't lead to the instability, which as well depends on your…"
"Jonathan,
3-5 times the amplitude mmmm, maybe you are measuring aliasing right? if you are sampling at 50Hz. I am interested in your experiments as I want to try more isolation techniques. Do you mind to share them? :P"
3-5 times the amplitude mmmm, maybe you are measuring aliasing right? if you are sampling at 50Hz. I am interested in your experiments as I want to try more isolation techniques. Do you mind to share them? :P"
"Hello Justin,
you are right, this is only a high level guidance algorithm. Actually, I wrote an algorithm based on TVFG (when I am inside the circumference, I put a "mirror" of the vehicle outside to compute the "tangent" point).
I applied it…"
you are right, this is only a high level guidance algorithm. Actually, I wrote an algorithm based on TVFG (when I am inside the circumference, I put a "mirror" of the vehicle outside to compute the "tangent" point).
I applied it…"
"By the way, all the simulations are without perturbations. What would happen if the vehicle goes within the circunference?
I did a similar algorithm that resolves that case, actually the algorithm is very similar and I explained with simpler maths.…"
I did a similar algorithm that resolves that case, actually the algorithm is very similar and I explained with simpler maths.…"
"Hello Tero,
In many many research papers, I always wonder why they refer an UAV something that it is NOT clearly an air vehicle (check out the equation 2 u_U). For instance, they add wind but they do not care about the sideslip angle in the control.…"
In many many research papers, I always wonder why they refer an UAV something that it is NOT clearly an air vehicle (check out the equation 2 u_U). For instance, they add wind but they do not care about the sideslip angle in the control.…"
"Yeah of course,
but if you are going to develop new navigation algorithms relying on raw data (served at fixed sample time), keep in mind that the results will be false.
Another issue to keep in mind (that happened to me). If you stress the HW to…"
but if you are going to develop new navigation algorithms relying on raw data (served at fixed sample time), keep in mind that the results will be false.
Another issue to keep in mind (that happened to me). If you stress the HW to…"
"Hi Jean-Louis
I guess we are messing concepts here. By definition, for a HIL system in hard-real time dealing with fixed discrete time systems (like our autopilots), the host (X-Plane) shall guarantee this requirement throughout the simulation. But…"
I guess we are messing concepts here. By definition, for a HIL system in hard-real time dealing with fixed discrete time systems (like our autopilots), the host (X-Plane) shall guarantee this requirement throughout the simulation. But…"
"Just a tip for further works:
In my experience, X-Plane is not a "good" platform for testing avionics, this is not a real time software and it normally does not run in a hard-real time machine neither. You can not employ control techniques…"
In my experience, X-Plane is not a "good" platform for testing avionics, this is not a real time software and it normally does not run in a hard-real time machine neither. You can not employ control techniques…"
"Hello Logan,
sure, no problem, let me know whatever you need to implement it"
sure, no problem, let me know whatever you need to implement it"
