Ego's SimForceGT - with DC actuators

Re: SimForceGT - with Firgelliauto actuators

no problem,
I only mentioned it here because we were talking about 24v for your system so it seemed relevant don't you think?

Re: SimForceGT - with Firgelliauto actuators

The h-bridge is running on 24V since one hour yet. I am uploading an additional vid that shows the systems behaviour while receiving LFS data currently.
Anyway, I will buy some zeners with higher voltage rate tomorrow. Thanks for mentioning it.

Regards
Christian

Re: SimForceGT - with Firgelliauto actuators

Thats not necessary! The 15v Zeners are there to add a little delay on the turn-on time of the mosfets to match the turn-off time and eventually protect the mosfets from creating short-circuit during fast switching.

The ones that does matter are the 1N5819 Schottky barrier rectifiers that I used. But they are in safe range too as they are rated for 40Volt!!!!!

Its totally safe to use 24 volt, or even 36volt if you like! I'll starting to reconsider if its safe or not, for over 40volts operation!!!!

Regards, Thanos

Re: SimForceGT - with Firgelliauto actuators

That's good news, 1 hour running is a long duration, I think I'd get motion sickness if I actually sat on a motion platform for that long!
Are the Mosfets warm to touch?
Are you cycling the motors up and down for that long?
How are your motors coping?
Are they warm?
Do you think the pots will handle the constant movements?
How much loading have you placed on the seat?
Do you pick up small rumbles from gravel?

Good news about Zeners handling 24V, it was only a small question and I wasn't sure so better to be safe than sorry and I didn't want to make it a big thing!

Re: SimForceGT - with Firgelliauto actuators

Here's a vid with 24V and LFS motion data.

http://www.youtube.com/watch?v=rrkzis2i_4A

The movements are quite slow because I cannot drive faster cars than this 45hp model in the LFS demo

Regards
Christian

Re: SimForceGT - with Firgelliauto actuators

Using faster cars that produce faster g-force changes makes the actuators run much faster.

I had to make some mods on the frame today, to lean the seat back a little.

It does not make much sense to show you more vids currently, as it is hard to judge about the performance without beamer.

I'll have the setup ready and the car batteries loaded till weekend.

Stay tuned...

Re: SimForceGT - with Firgelliauto actuators

I could not resist to make a new video that shows the actuators powered with 24V while driving a fast car

http://www.youtube.com/watch?v=uhz8H3izmEE

Stay tuned. In the next vid you will be able to compare movements with game and sound.

Regards
Christian

Re: SimForceGT - with Firgelliauto actuators

Hi Christian,

Good work!!! It moves fine now!

When sitting on it, can you feel the rumble of the road? Did you used my z-axis mixed profile to test it with bumps?

Regards, Thanos

Re: Ego' SimForceGT - with DC actuators

Here you go!

SimForceGT with GTR2 with mixed z-axis :yippiee:

You can feel road bumps even

http://www.youtube.com/watch?v=JCImLNYfiwg

Regards
Christian

Re: Ego' SimForceGT - with DC actuators

Here's another vid with No Limits coaster. As most of the g-force data is on the vertical axis, its not very spectacular what you will see.

Anyway, here's the vid...

http://www.youtube.com/watch?v=Ws8OO9v5wjw

Hi Christian,

The two videos are great! Perhaps I should try a compile you a KP20 or KP22 firmware for more speed as your actuators don't seem to bounce around the values at all! :clap:

I'd suggest the same! Try it shooting your videos in full light environment (perhaps daylight). While shooting my videos in the past, I found that daylight gives you the best video quality! And I'd like to see it moving from a side angle point of view!

BTW, You can mix the vertical axis forces to the y-axis motion like I did on my LFS profile to be able to add a little more action on the No limits Rollercoaster! And why not, share the rnr profile to save us from lots of fiddling with it.

:thbup:

Regards, Thanos

Re: Ego' SimForceGT - with DC actuators

As my camera is not the best one, you wont see the beamer picture, if I'd put more lightsources.

Its really easy to make the SimforceGT running with the games and Profiler. But its not that easy to work out a perfect movement profile. I just made it working as fast as I could to show you guys that it rocks. But I have to make a lot of fine-tuning still. For each game

I've experienced that I do lose much accelleration movements when I do mix in the z-axis. Perhaps I should try to add the z-axis as a collision effect, that will play if the value rises above a assigned minimum, instead of a common g-force effect.

I'll make a vid with LFS now

Regards
Christian

My pots do flicker over a range of 15/1000. With KP18 I do notice some jittering, due to the bad pot signal. I'll try to lower the signal interferrances by shortening the pot wires (currently 1.5m each).

If that does not help I will have to exchange the 10k pots to 100k ones perhaps. As they are common ones, Its not a big issue.
But for now, I am quite happy with the results even with KP18.

Afais, I'll have to do much fine-tuning now.

I noticed while watching my youtube vid, that the z-axis killed the gear-change-rumble

Stay tuned....

Regards
Christian

Here's a SimforceGT video with LFS driving a BMW Sauber F1 :yippiee:

http://www.youtube.com/watch?v=kv4jKayLzbg

Regards
Christian

Thank you guys for your comments!

Here's another vid with RFactor! :yippiee:

http://www.youtube.com/watch?v=EtBf-dH-KS4


@Evan
I'll answer your questions after having made some further tests. For now I just wanted to show the community that Sirnoname' X-Sim Software + Thanos motion control hardware do rock! :clap:

Yes, the mosfets do get hot. The fan is really neccessary!

Regards
Christian

Hey

Really amazing job sofar, I really enjoy loging in a couple time a day and see these videos... I just hope the wiper motor are as good as yours look, sofar I haven't seen them with wheigt in the seat.

Special thanks to thanos, sirnoname and egoexpress for all your help and hard work...

Ferrari_man

The 24V 1,5A PSU I am using to drive both acutators currently would be going to smoke up for sure if I would sit myself in there for a lenght of a vid. I tested it for some secs, and the PSU got quite hot suddenly. But the power of the acutators seems to be sufficient.

Hold, on just a few more days till I'll have got a battery loader.
I thought there was one in my garage, but I cannot find it.
As well I have to recenter the pivot, cause I moved the seat position a little lower to a more comfortable position.

My doubts with the actuators have been due to their speed. They have enough force for sure, as they provide 20kgf each, while the SCM SCN5 do only provide 10kgf max each.
Now I just have to test if they wont get hot too fast...
Without sitting in the frame the acutators dont get warm even if I drive the SimforceGT for an hour with 24V.

Imho you wont get probs with the wiper-motors. They are fast and powerful enough for a SFGT.

Regards
Christian