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Post by paulg100 on Nov 12, 2016 7:50:09 GMT
!But I read somwhere single ended shield does not protect against high frequency magnetic field interference...."
There is some differing opinions re ground loops and ground/shield termination which can make things a bit confusing! I did lots of reading and tried to follow the overall consensus which seemed to be that signal shields should only be terminated one end (in our case AMC end), but maybe its wrong??
In theory all grounds should return to one point (star grounding), but I found this very difficult to achieve in practice, you would have lengths of ground wires running everywhere!
EG in my system I have a main cabinet which has a grounding point. The mains ground runs to this point then in theory all ground should run to that point. but eg my amc is in separate emi enclosure, so all grounds for amc end run to this enclosure then to cabinet grounding point.
My vfd ground run to the mains ground bas bar. I just couldn't see a way of running everything to 1 ground point.
Ill take some photos later if you will find it useful.
Thanks for the earth testing link, ill take a look at this.
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milou
New Member
6 DOF Motion Platform for home build 737 sim
Posts: 5
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Post by milou on Jan 20, 2017 22:15:44 GMT
Hi I am new member in this forum. I am B737 home build simulator. I work on this project, and I am about to start the study and construction of 6DoF motion platform. I am novice on this matter. Is there anyone here, or yourself to feed me with your experience and background, and what I do mandatory have for this 6 DOF motion platform, as softwares, hardware, geared motors or actuators (choice?), Inverters, etc, etc ...
I will appreciate any help ..
Thanks for all
Milou 737 home build simulator am.hachadi(at)gmail.com
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milou
New Member
6 DOF Motion Platform for home build 737 sim
Posts: 5
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Post by milou on Jan 20, 2017 22:23:07 GMT
Hi Gadawg,
I am new member in this forum. I am B737 home build simulator. I work on this project since 2007, and I am about to start the study and construction of 6DoF motion platform. I am novice on this matter. Is there anyone here, or yourself to feed me with your experience and background, and what I do mandatory have for this 6 DOF motion platform, as softwares, hardware, geared motors or actuators (choice?), Inverters, etc, etc ...
I will appreciate any help ..
Thanks for all
Milou 737 home build simulator am.hachadi(at)gmail.com
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johann
Junior Member
Posts: 57
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Post by johann on Jan 21, 2017 7:52:14 GMT
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milou
New Member
6 DOF Motion Platform for home build 737 sim
Posts: 5
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Post by milou on Jan 23, 2017 14:25:42 GMT
hi johann Thks for your welcome, I do appreciate your advice. I will check ASAP the link you have posten
Cheers Milou
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Post by mertdizzle on Feb 9, 2017 4:38:11 GMT
First of all, good job on this build. I just read through every page of it not understanding half of it (the parts about programing and tuning) and now I'm convinced that I have to build one.
This is going to be a VR setup for me, already have an oculus and it completely changed sim racing for me. You say that in the oculus you dont need as much lean angle but need it to move faster. Would it not be better to have both, or does excessive lean cause undesired effects in VR. I feel like having the steeper angle would be better for simulating g forces in f1 cars when going through a long corner. Could you achieve having both speed and articulation by having a more powerful motor?
Also does anyone know of a gearbox that outputs on the same axis as the motor?
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Post by paulg100 on Feb 9, 2017 6:47:34 GMT
"Would it not be better to have both, or does excessive lean cause undesired effects in VR." the problem is latency, more of an issue for driving games as flight is slower by nature. IF you can get large movements without latency then fine. That will depend on power, your building skills and how well you can bolt everything down, otherwise inertia is the problem. In driving I think you will find large movements tiring anyway. Having very steep roll whilst cornering in a race car is not good for me and is unrealistic anyway unless your driving the family minibus Same with large amount of pitch for simulating acl and dcl, it just dosent feel right. Flights a different matter but again that's slower anyway. If you are planning to build a light VR sim then maybe check the linear actuator builds on xsimulator.net. as a large AC sim may not be necessary. Gearbox's most companies do options for mounting angles. Good luck.
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Post by benste on Mar 14, 2017 3:52:42 GMT
Hello, I am about to start building my 6D.O.F Simulator currently in my research phrase.
Do you experience any free play with your simulator's worm drive?
Cheers =)
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Post by masterhoo on Jul 2, 2017 22:15:37 GMT
Hi @ga-Dawg, I was trying to understand the whole wiring in the project, but I just cannot get it. Could you, or someone who does, post a wiring diagram? connections among main PSU, AMC controller, inverters, motors....It would be really helpful to me, and others. than you.
Max
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Post by paulg100 on Jul 3, 2017 21:42:27 GMT
all the info is in the forums already, just have a search through the projects here.
also their is no PSU, the VFD's are mains voltage.
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Post by jtracker on Dec 3, 2017 1:10:11 GMT
This maybe should belong on it's own thread, but I thought I would drop it here to start with. I have attached a couple drawings which I assembled from a re-imagined GA-Dawg's project from Page 1 of this thread. Hopefully it's not inappropriate to do so. In this model, I have incorporated a variation of the assembly using Bosch Aluminum Extrusion (similar to 80/20), as well as Motovario NMRV/050 20:1 Gearboxes. These are smaller gearboxes than the ones originally specified, as well I am using 1kW servo motors and drives - in lieu of the 3-phase induction motors. I have yet to machine the flange adapters for the motors, and the custom shaft adapter - but will be done soon. Thanks for the awesome information. Simulator Platform v4.dwg (147.51 KB) Simulator Stewart Platform v4.pdf (150.94 KB) Simulator Stewart Platform v4 - Adapter Flange.pdf (53.95 KB)
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Post by gadgeroonie on Nov 30, 2018 23:05:57 GMT
can you tell me a bit more about your motors and gearboxes how many watts are they ? do they get hot over time ? is it a 80 : 1 gear ratio regards
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