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Post by stevant on Nov 24, 2014 4:54:14 GMT
Hi riton, I'm not using x-sim for my motion software. I am using BFF. 
A few of you wanted to see me run an Oval track, attached is a video of me driving Daytona. I decided to go through the middle of the track for a break. Hope you can see the motions you were looking for. They feel awesome!!
I added a few more braces to my monitors, almost no movement now.
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Post by tronicgr on Nov 24, 2014 6:48:20 GMT
OK. That is just perfect! I cant believe that the platform actually was lifted to the motion cues of changing tires in the pitstop!!!!! Blown my mind away!!!  Thanks for the amazing videos Steven!!!! |
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Post by stevant on Nov 24, 2014 11:08:27 GMT
Thank you Thanos!!!!!!! I owe you the credit for all your support.
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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 24, 2014 13:19:08 GMT
Hi Steve,
I agree with Thanos... Your motion platform is awesome! This latest video certainly shows what 6dof is all about. The 60:1 ratio you are using is well suited for the race car Sim, allowing for some nice response times. Looking forward to seeing the other end of the spectrum, with the slower and smoother response needed for the airline flight simulation.
Keep up the good work, and keep the videos coming!
Mike
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Post by stevant on Nov 24, 2014 15:14:26 GMT
I did not forget about you Mike. I'm going to video my VFD's with the D002 setting for you. I'll do that tonight to see what kind of numbers I am getting. Just waiting to hear from Ian in regard to the X-plane software issues. Once rectified I'll make a flight video.
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Post by riton39 on Nov 24, 2014 20:02:12 GMT
what is the output speed of the engines, I can not remember ...
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Post by stevant on Nov 24, 2014 20:24:45 GMT
50%
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Post by riton39 on Nov 24, 2014 23:30:47 GMT
in RPM outpout
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Post by stevant on Nov 25, 2014 0:09:23 GMT
Let me see how I can find that out......I'll get back to you as soon as I find out.
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Post by tronicgr on Nov 25, 2014 4:25:52 GMT
Its easy Steven, its the motor max rpm divided by the ratio of your gearboxes divided by 2...
I think its about 15RPM
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Post by riton39 on Nov 25, 2014 6:55:45 GMT
if the motor nominal RPM is 1500RPM
Ratio 60/1 ? 25 RPM nminal
if you put the motor at 50 % 12.5 RPM ?
correct Ratio/RPM ?
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Post by tronicgr on Nov 25, 2014 7:09:35 GMT
If I remember correctly Stevens motors are 1800RPM...
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Post by stevant on Nov 25, 2014 12:29:25 GMT
Yes they are Thanos....1800 RPM, 4 pole, 1 hp, 60:1 gearbox. Max speed set at 50% on AMC1280USB
15 rpm it is!
Thank you....I was drawing a blank there for a minute!!!!
There you go riton |
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Post by stevant on Nov 25, 2014 12:32:34 GMT
As promised here is a video of my D002 setting on motor number 3. I tried to get all six but could not get close enough due to the proximity of my platform when in motion. Should be a good overall representation of the other five. The sound you hear is my gas and brake pedal, in case you were curious.
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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 25, 2014 14:17:18 GMT
Hi Steve,
Thanks for sharing the active current that your VFDs are showing with your 6dof system. I believe you are using a 1HP 3-phase motor with this VFD. The "peak" current doesn't seem to exceed 5 amps in the race car simulation. I wonder what it might be with the flight sim mode, as the movements will be of longer duration.
On my test setup... I am using about the same VFD setup parameters, with the exception that I am using a 1.5 HP 3-phase motor. On the AMC1280usb controller, with a "P" value of 25, "i" value of 0, "d" value of 0, I am seeing current spikes up to 15 amps. The Aceleration/Deceleration parameters set in the VFD are 1.0 seconds. This current reading is without a load on the actuators - just the motor/gearbox. Again, I am using a double-reduction Grove gearbox with a of 160:1 ratio, so my response time is quite different than yours.
If the "i" and "d" values are increased, I see significant increase in VFD current values as displayed on the VFD with the d002 function, with peak current shown >30 amps with "i" = 25 and "d" = 25. However, Thanos states that these values are best left at 0 for the flight sim mode, which in my case, seems to yield good response times for the 737-800 flight model.
I will know more about all this when I finally get the 6dof motion platform built up in full, and test it with a load. In any case, like you, I have 240 VAC @ 120 amps for my power source - 20 amp circuit breaker for each of the six 6dof segments. I'm hoping that these "peak" currents drawn from the VFD will not be a problem (tripping the breaker) in my 6dof motion platform application.
Mike
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