SimTxus 3 DOF my new simulator

[Txus]

Hi

This is my new project. Is a 3-axis simulator of freedom. using linear electric actuator. The control system would be with a Velleman VM110 and AVR + + Sabertooth Hbridge. But to discover that thanos has declared obsolete the plate see 1.5 and does not give more support on it, I decided to change the system of control, JRK pololu 3 plates. I have not yet clearly defined the control system because I have some doubts with JRK 12v12 and the type of potentiometers that can be used with them. But are underway and will soon be able to test them.

Actuators is that I have used are a bit slow but it was not possible for me to be a faster, try to change them for a time faster. I wish I could use SCN6 but for the moment dismiss its high price. But I think the best option I have is to hack these actuators by adding steper or other engines that allows me to get more speed.

System description:

For the simulator I'm using 3 100mm 12v electric actuator. Is that its speed is not the optimal but this is the beginning and I will try to improve their performance by making some modifications to the actuators.
I built a small prototype system using 3 servo actuators and pololu board control servos.



The Base

The base structure is that of my previous simulator once removed from my previous project. Is made of extruded aluminum profiles 40x40mm



Installation of the actuators

The system is equipped with two actuators at the rear, mounted on a square steel and aluminum plates.




The front actuator is also mounted on an aluminum plate and have attached directly on the aluminum profiles.



Install the potentiometers

For installation of the potentiometers I will use a rack and gear system. If the plates of pololu JRK admit multiturn potentiometers, I'll use small gears, if not I'll use larger gears.





I have used Cardan connections to support the cylinder head, I used the pin to lock the piece that moves the potentiometer gear






Best Regards

[motiondave]

Nice looking project there.
The JRK's can be a bit curly to set up depending on motors used. Send me an email to ziltoid@optusnet.com.au and maybe I can help. I use JRK's.
I am in the process of re-motoring some ex-240v actuators with 12v motors and will be busy sorting them.
As for pots, with actuators, a multiturn gives the best resolution. I will start with a big slider pot myself.
A 5K linear pot is best, be it single, slider or multiturn pot.
What speed rpm motors are you using? Can you put faster motors in them?
Cheers, David.

[Txus]

Hi

I've sent you an email

Cheers
Jesus

[motiondave]

Heres the size of the actuators I am going to test, pity I cannot get some more, but you take what you can get.
You can see in relation to size of a big paint spray can.

[Txus]

Hi

Look great. Seem able to move anything. Do you have any estimate of the speed of movement that can be achieved with the new 12v engine?

Cheers
Jesus

[motiondave]

Hi

Look great. Seem able to move anything. Do you have any estimate of the speed of movement that can be achieved with the new 12v engine?

Cheers
Jesus

The actuator throw is 100mm, so I am going for 180mm per second or less - loaded.

[Txus]

Hi

Yeah, very very fast and very very interesting.

Cheers
Jesus

[motiondave]

Hi

Yeah, very very fast and very very interesting.

Cheers
Jesus

Yes, they should have the "f.... me!" motion for sure!

http://www.youtube.com/watch?v=DXUR-kTz6YY heres a result I got from it. I use 12v 200w 4500 rpm motors and got at least 200mm per second.
That and I sat some weight on them, they moved 40kg under motion no problems. Total throw is 100mm.
Pity I cannot get more, but I guess they would cost about $1100 each with no motors.

[abnergomes]

Hi Txus!

Any news, could you tell me the configuration of their engines and shopping website in which acquired these actuators.

Hug!

[Txus]

Hi

I'm a little stopped. I've gone under the knife in the medical center, I have not been able to start the simulator to see anything. I'm looking for the information and send it to you.

regards