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Post by stevant on Nov 25, 2014 17:29:43 GMT
Yes Mike, 1 hp, 3 phase motors. I guess then that is good, not too much draw going on since I have a dedicated 20 amp breaker for each motor. I'm currently running a "P" of 19, "I" of 0 and a "D" of 0. My Accel, Decel times are at .5 sec. I should have the flight program up and running tonight I hope. I will see what kind of numbers come from that.  Steve |
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Post by riton39 on Nov 25, 2014 20:03:08 GMT
I do not know your views here on the acceleration and décélération.
it may be necessary to put a ramp because of errors eg on the drive, but there are alternative.
it is possible to increase the range of effects,
to increase the definition and reduce violence simulator.
I do not have all the answers, but what is certain is that increasing the ramp is bad for sensations.
I make a video to show this.
it might be interesting to share his opinion on the settings?
in this vidéo, Motor 30 RPM all drive parameter are optimized for better response times. just 2 test to see the difference first :video 0.5 ramp second : 0.0 ramp
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Post by stevant on Nov 26, 2014 4:12:29 GMT
I'm having a problem getting my x-plane to sync with my BFF software. Iracing is working fine. Ian has looked at a few error message but nothing working yet. Thanos, maybe you can take a look at my system and see if anything jumps out at you? It has to do with the UDP.
I would appreciate it. :-)
Thanks,
Steve
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Post by tronicgr on Nov 26, 2014 4:47:35 GMT
I'll have some freed time tomorrow perhaps. I haven't used x-plane before, being a fan of FSX and older MS series, but maybe I could figure out the UDP issues.
I'll text you the time in the morning.
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Post by stevant on Nov 26, 2014 5:01:44 GMT
Thanks Thanos........sincerely!!
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sagrada
New Member
Hello All... I'm in the process of building a 6dof Motin Platform to support my full-scale 737 Sim.
Posts: 43 
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Post by sagrada on Nov 26, 2014 14:44:54 GMT
Regarding riton39's comments concerning acceleration ramps...
First of all... Thanks for posting your video in response to Steve's comments on acceleration/deceleration. The results you showed in your video were interesting and indeed do impact the response of the lever as shown in the video. One thing however needs to be considered is the movement of Mass for any particular motion platform design configuration. It makes sense that for a small, light weight motion platform, one can setup the drive (VFDs in our case) to have a very short acceleration ramp (ramp profile also needs to be considered - linear in our case). However, the larger the Mass that needs to be moved within a period of time, the more consideration needed to achieve the right balance for the drive systems that are used, including the acceleration/deceleration ramps required to achieve reliable performance for the specific application. In this regard, moving a 100 Kg Mass will have significantly different system requirements than that required to move a 1,000 Kg Mass, which will almost certainly involve having some kind of acceleration/deceleration ramp in the system equation.
Google translate to French...
En ce qui concerne les commentaires de riton39 concernant rampes d'accélération ...
Tout d'abord ... Merci d'envoyer votre vidéo en réponse aux commentaires de Steve sur l'accélération / décélération. Les résultats que vous a montré dans la vidéo étaient intéressants et bien ne influent la réponse du levier comme indiqué dans la vidéo. Une chose doit cependant être considéré est le mouvement de masse pour toute configuration de conception de plate-forme de motion. Il est logique que pour une petite lumière plate-forme de mouvement, de poids, on peut configurer le lecteur (EFV dans notre cas) d'avoir une rampe d'accélération très court (profil de rampe doit également être considéré - linéaire dans notre cas). Cependant, plus la masse qui doit être déplacé dans une période de temps, plus de considération doit être donnée aux systèmes d'entraînement équilibrées utilisé, et les rampes d'accélération / décélération nécessaires pour atteindre des résultats fiables pour l'application spécifique. À cet égard, le déplacement d'une masse de 100 kg aura sensiblement différentes exigences du système que déplacer une masse de 1000 kg, qui sera presque certainement impliquer d'avoir une sorte d'accélération / décélération dans l'équation du système.
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murph
New Member
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Post by murph on Nov 26, 2014 15:43:10 GMT
Hi Stevant That is a Beautiful platform you have built i enjoyed watching it come together i hope if i ever get to make one it can be as good And @thanos you are just great with the help you give everyone i have followed your work for quite some time and although i don't understand 90% of the things you talk about i still find it brilliant keep it up Kind Regards Murph |
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Post by riton39 on Nov 26, 2014 17:00:57 GMT
Regarding riton39's comments concerning acceleration ramps... First of all... Thanks for posting your video in response to Steve's comments on acceleration/deceleration. The results you showed in your video were interesting and indeed do impact the response of the lever as shown in the video. One thing however needs to be considered is the movement of Mass for any particular motion platform design configuration. It makes sense that for a small, light weight motion platform, one can setup the drive (VFDs in our case) to have a very short acceleration ramp (ramp profile also needs to be considered - linear in our case). However, the larger the Mass that needs to be moved within a period of time, the more consideration needed to achieve the right balance for the drive systems that are used, including the acceleration/deceleration ramps required to achieve reliable performance for the specific application. In this regard, moving a 100 Kg Mass will have significantly different system requirements than that required to move a 1,000 Kg Mass, which will almost certainly involve having some kind of acceleration/deceleration ramp in the system equation. yes you're right. it was to show the result. with a good engine power ramp can be at a minimum. increase the effective range, reduces violence simulator and error problems on the drive. I wonder whether it is not better I did different tests with significant example 5G values up to 10 G with a big load 0.1 is sometimes mandatory ... or 0.2. |
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Post by stevant on Nov 26, 2014 21:19:37 GMT
Wow you guys are good..........could not have said it better myself!!!!
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Post by stevant on Nov 26, 2014 21:20:48 GMT
Hi Stevant That is a Beautiful platform you have built i enjoyed watching it come together i hope if i ever get to make one it can be as good And @thanos you are just great with the help you give everyone i have followed your work for quite some time and although i don't understand 90% of the things you talk about i still find it brilliant keep it up Kind Regards Murph Thanks for the kind words Murph.........you can do it, one step at a time. |
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murph
New Member
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Post by murph on Nov 26, 2014 22:02:52 GMT
Thanks Stevant It will be a big mountain to climb but i think i am in the right place to try at least |
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Post by stevant on Dec 1, 2014 1:27:46 GMT
Here is a quick video of me trying xplane on the finished platform. Need to work out some of the kinks in regard to the unwanted subtle cues, overall you feel the take off, descent, banking and the landing. Takes the flight simulator to a whole new dimension. If you look at the speaker closely you can see the random jitter I am referring too. I went into the info tab on my BFF software and I hit \B to stop the turbulence but I could not tell if it was actually off. I was still feeling the unwanted cues like it was a constant, slight turbulence. I'll work it out I hope.
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Post by tronicgr on Dec 1, 2014 4:32:18 GMT
Hi Steven,
The landing was so realistic! Amazing response! Bravo!!
To remedy the issues with turbulence try the following:
Reload the latest firmware again. Had made some fixes to it but kept the same name.
Then increase the min motor speed on the AMC1280USB LCD menu until the motor settles. You might have to use min motor speed number as high as 10 or 12. Note that this number is not % of the actual speed...
Also in Ian's bff software there an ini file that is related to the 6dof process for the AMC1280USB. Increase the delay to 10 (ms)...
On my side I'll check again tomorrow on my motor setup and on the oscilloscope if there is any noise created from within the controller with Ian's bff software or with the 6dof plugin for comparison.
Its hard to tell right now where that comes from. But I'll take care of it if its related to the firmware or hardware of the controller. I already have in mind a plugin adjustable filtering add-on for the analog outputs of the 6DOF ext board that I might try if everything else look fine.
Thanks,
Thanos
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Post by stevant on Dec 1, 2014 12:20:52 GMT
Thanks Thanos.......I just made the update, no problem. I went into the Min. motor speed and see the increase from a high of 5 to now 14. I made the change to 10 as suggested. VFD's started getting quiet at 4-6 but I went to 10. No noise!!!! I was at 1%. I know the new numbers are not a percentage, just thought I would note what my setting was at prior to the change. I also changed my MD_Delay in my BFF.config file to 10ms. That was the default but I had changed that to 0, so now it is back where it was.
I'll run it later today after work and let you know how I make out.
Thank you again!!!
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sagrada
New Member
Hello All... I'm in the process of building a 6dof Motin Platform to support my full-scale 737 Sim.
Posts: 43
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Post by sagrada on Dec 1, 2014 16:37:40 GMT
Hi Steve, Thanos,
I am still using the old version of the AMC1280 firmware, but I did change the Min Motor Speed from 0% to 5%, and it seems to reduce (but not eliminate) the level of activity when in the Kill switch position. I'm guessing that upgrading to the new firmware and changing this to 10% will solve or improve this issue.
On another note... I had a case this morning where on a flight with moderate turbulence (actuator Lever going crazy), that the Lever started to "wrap around" the output shaft of the gearbox. This seemed strange to me, and I thought it might be something with the AMC1280 controller. However, it turned out to be a loose nut holding the Position Sensor in place. I tightened it down and things were back to normal.
I started thinking how this would impact mechanically (potential mechanical interference) the full 6dof motion platform if one or more of these Position Sensors came lose, as there might be potential for some serious mechanical damage to the motion platform and its systems. The solution to this is ensure that these Position Sensors are mechanically secure, with not oly lock washers, but also LocTite.
Thanks again Steve for making these videos of your project, as they really help to visualize how these 6dof systems work. Also... Thanks Thanos for making such a great product in the AMC1280usb controller.
Mike
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