Riton' 2DOF with AC gearhead motors

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

http://www.youtube.com/watch?v=evIMa8XeqM4

same thing with move the ofset
http://www.youtube.com/watch?v=6Q95E7De8Fo

you can see 2,3V in the center

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

Here is your problem. Read my whole comment.

If you are only outputting a 0%-100% PWM signal, how do you determine which way your motor has to turn?

The welleman card cannot calculate your direction. All it will do is convert the PWM signal to a Voltage level. You get 2.3V because that IS your middle point in X-Sim and that is what you are outputting.
Your 0 position is actually 50% - 2.5V, because you CANNOT output speed and direction on one single line. Only way to do it is to have a controller that makes 50% input to 0V output, 0% input = full speed left, 100% input = full speed right.

In your drawing you show 2 direction inputs to the phase inverter. Did you measure those voltages?

If you would have posted the informations I asked for in my very first post here, I would have told you 2 pages ago that you don't have your hardware setup correctly.

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

I give the rotation at my engines with 2 others differents axes synaptrix with the sequence and the digital output, of course!

this video is just to shaw you the problem with 2.3v at the center.
normaly i don't have a 2.3v center as the same cable in PWM signal
PWM + modulation speed in one cable
direction sens, is in a n other cable

i dont understand, i need help in my french forum.....

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

http://www.youtube.com/watch?v=BN4sUFDm9iQ

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

This remark wondering ... how?
there is a special way to do that, I think I know how ,....
how to separate the speed and direction? (to check if I made good)

I give the rotation at my engines with 2 others differents axes synaptrix with the sequence and the digital output, of course!

:? :? :?

your video doesn't work btw

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

upload....need time to finish the upload

i think sense and speed can't be separate in inside x sim....
i send direction to digital output, but ther are no change in the speed, there are always 2, 5v in the center axis.

http://www.youtube.com/user/MSXRsimulation?feature=mhw5

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

Riton,

I think I know whats happening.... The Velleman card CANNOT be used for BOTH Digital and Analog (PWM) signals the SAME time...!!!

That's why I created my AMC1.5 motion controller, cause I could not find ready commercial solutions on this. My AMC works like that:

For ONE motor has these outputs: TWO Digital directions signals and ONE Analog Speed signal (PWM)

to make the motor rotate to one direction:
DIGITAL_Direction_1_output = 1
DIGITAL_Direction_2_output = 0
ANALOG_Speed_PWM = varies from profiler

to make the motor rotate to the other direction:
DIGITAL_Direction_1_output = 0
DIGITAL_Direction_2_output = 1
ANALOG_Speed_PWM = varies from profiler

From the side of the Profiler you need only ONE input, most usually some g-force that returns back to zero value automatically.

Thanos

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

ah! Thanos! thanks
an observation that is consistent with my problem ...

my setup is the same as you, except for my speed analog 0 to 5V

are you sure the analog and digital do not work together?
it works very well with the test program Velleman.

it also works very well with x and the sim card velleman
it seems to work on the same output analog. I feel that we can not separate the speed only on analogue.

I feel that speed and direction are always together on the analog output.

if I delete the 2.5 v in the center, it would work very well

I'll make a video on my profile that works pretty well ....
I put dynamic speed to -100%, 2.5 as it becomes the center v 0v, but this is not correct for the effect .... but this is the best solution

all the solution give the same problem, direct output, analog output, with pot or not pot reference, is the same problem, the result is the same 2,5V in the center....
there are just one different setting :
but is just only one speed its :analog integer in the section sequence step in synaptrix.
0 is 0v and 0 speed and max is maximum speed, but is not dynamic.....


I am sure that with perceverance, we can run the card velleman!
I believe much has this opportunity!
requires little to make it work!
Velleman map is easy to use and not very expensive.

If this problem 2.5 v at the center is set, it won, its ok

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

if you want:
I need Xsim sends the sense motor in digital output.
and I need xsim send speed, and just the speed of 0 to 5V on the analog output
and now in the analog output, I have 2.5v in the middle, I need 0v
it starts with a speed of 50% I just need 0
dynamic course!
0 speed effect= 0speed, big effect, big Speed max 100%

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

Are you using velleman card to INPUT back to computer the potentiometer positions?

I think I heard that velleman can't be used for input Analog and output Analog (PWM) the same time... someone correct me if I'm wrong... I don't own velleman card, never did!!

Thanos

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

Yes, I use potentiometers for position engines

yes using either analog or PWM, but I do not need 2 in the same time.

I use analog for speed
and digital for the sens rotation

with the VM140 i have the same problem, a freind test for me , i have 2,5v in the center

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

riton, you should try using the AMC.

USO serial output -> AMC -> PWM out -> Welleman DAC -> Phase Inverter analog in
AMC -> Digital Direction outputs -> Phase Inverter Direction in
Feedback potentiometer -> AMC analog in

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

http://www.youtube.com/watch?v=4jm66P1p4X0
my profile game, waiting for a real solution

http://www.youtube.com/watch?v=Bce2cLQ3-v8

I think I have an idea of the problem:
in analog, information sens motor, stop motor, 2.5 v at the center, it also finds in output analog, she is not stopped by the PWM and transistor output
to analog output, all out: speed and direction and i's not correct!
it is impossible to stop information stopp motor, and is found in analog output.

should just make out the speed in analogue
how to block information from motor sense: stop the engine central axis, analog output?




Proposer une meilleure traduction

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

Hi, a problem is that the input of variator is not standard i.e. it is 0->Speed null ; 256->Speed max (ex: +100tr/mn) and the sign need be separate to a digital input of variator.
Now I think is normaly 0-> Speed min ( -max ex: -100tr/mn) ; 124-> speed null and 256-> Speed max (ex: +100tr/mn) ; It is good for the mean application but for the variator of Riton it is not exactly good, he need use only the half of range to have the positive value, i think.

Is it possible to give the source code of plugin of K8055 for see if it possible of only change the DDL of K8055 to Riton ?

I think somethink like this:

if (value >= 2^31) { // if value is normaly postitive i.e. 0 <= value < +100tr/mn
outputDA1( (value - 2^31 )*2 ); //analogique output of 0 to 2^32 i.e. 0 to 255 of VM110 -> 0 to 5volt
Digital1( 1); // digital to the variator right way
}
else { // if value is normaly negative i.e. -100tr/mn < value < 0
outputDA1( abs( value - 2^31)*2); //analogique output of 0 to 2^32 i.e. 0 to 255 of VM110 -> 0 to 5volt
Digital1( 0); // digital to the variator wrong way
};


Regard,
Akina

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

That is exactly what I have been talking about... I am not going to repeat myself.

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

hello
I made a change on the simulator.
I changed the system for my mechanical potentiometers.
I made a quick prototype for testing.
I confirm my new installation, then I will make a pulley of aluminum, with roller bearings to not break the potentiometer

This system is very simple and very effective!
it's much better than my old installation.





for my speed problem, I understood the problem.
Nima really helps me to understand the profiles, I will find him a solution
the new Xsim version will bring also, I hope a solution for installations like mine.

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

I had much problem with an error: A Dll Was Not loaded
I finally found the problem!
My 2nd PC simulator / profiler was not powerful enough

I changed my PC with a big core 2 duo and I have no problem!
Profiling / synaptrix works fine now!

I also add an external 5V supply to power the potentiometer, the velleman card, my card DAC board

I'm redoing the bracket pot , I'll post pictures ....

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

my news pot support

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

I suggested this some time ago. Unlike the SCN5 or Tronic' AMC controller, in your setup the pc has to calculate the positioning, which requires a lot of processing power.

However, good that you have solved this problem :thbup:

Regards

Re: Riton' 2DOF with AC gearhead motors/ need help for speed

yes me too!
I realize that you had talked to me.
I changed the first time my PC simulator, but it was still not strong enough!
this time with a dual core and 4GB 2X 3000Ghz DDRAM is ok!
I'm at 2% CPU!

as there is no configuration minium, it is not easy to do an idea of power requirements with synaptrix.

now it works very well, and I am very happy!
much advised to change map, but the map velleman works really well! is quite impressive this card does wonders!

I still have the problem of output for my drive, I work with friends on the fabrication of a small interface to adjust my inverter.