how to do that ? what is the parameter name in the scope? i try to decrease and increase but no curve... Then you can increase the second setting on the oscilloscope (time base), to draw more slowly the curves of the measurement like on the video above.
I spend hours and hours and each time it's really not the top .... I wonder if I will continue with this thechnologie I will think, as I have in any case invest in 3 gear motors, I can go to take servo motors ...
I have a problem with my drive, I do not know how to adjust the curve U / F 'parameter to n 09 n15 (omron mini J7) if I change the values, it changes the PID is completely distorted!
it's hard to be on the setting of the drive. I changed to another setting, that to improve things, but there are so many parameters, are set correctly?
Have you ever thought to use Worm Gearboxes? They behave much better under load and they don't back-drive the motor position because of the load. Then you can have good results even with under-powered AC motor...
Servomotors will do the same thing under load, they will oscillate too if the load is trying to backdrive them, that will happen if the load is beyond their specifications (they correcting the position)...
A good mechanical design can overcome such stability issues.
I remember when I tried using the AC motor for FFB... I had to make lots of changes in the VFD inverter parameters, to limit the max RPM of the motor to 80RPM, then limit the max current used, and lower safety limits to allow the motor to be used in torque mode... www.youtube.com/watch?v=mmC9qn_osLc
If I can use an AC motor for FFB steering wheel, it can be used for anything!
P=50 I=0 (This parameter produces a "kick" to the motor to make it reach the correct position if there is offset for significant amount of time, thats why you see it kick back up every now and then). D=40 (try to increase or decrease from this value to see the difference.)
On-line speed = 80 Off-line speed = 80 (or 75 or less), try to decrease it until no notion occurs in target position.
Also go to the "6DOF Start Pos" menu and change the "step speed" to 99 And under same menu, "Timeout" to 9
Then, while trying the motion on the motor, Turn OFF the LCD display (yellow dip switches, 1st switch OFF position) (turn on again for more settings).
I'll have to address the LCD update thing to be able to disable itself a few seconds of no activity on the encoder of the menu... Lots of people leave the LCD updates on and then the motor really shakes as of the PID timing distortions that introduced by interrupting the PID code to display info on the LCD.
dureiken: Hi there, it's really quiet here someone could help me for my 6 dof project ? thanks a lot
Aug 8, 2017 15:34:46 GMT
tronicgr: dureiken Hi, Open a thread and I'll try my best to help. A little busy with Kickstarter details at the moment but I'll see what I can do.
Aug 12, 2017 11:57:42 GMT
dureiken74: I just did it
Aug 27, 2017 11:59:06 GMT
fimmy: How's the firmware going?
Sept 6, 2017 8:34:43 GMT
tronicgr: @fimmy I had to put it on hold to finalize the manufacturing of the new kickstarter controllers. I tested parts of it to ensure compliance with the new features and looks good so far. I'll get back to it soon for integration.
Sept 9, 2017 12:52:35 GMT
Theuns: Very nice design.I'm also busy with mine and changing it also to Linear Actuators with 220v Servo motors.I'm waiting for my new controllers from Thanos. If I may ask Do you have any Sketchup files of your design and willing to share it I Thanks Theuns
Sept 14, 2017 22:45:09 GMT
atayeu: Hey everyone! I'm reading up and gathering all of the intel I can find for my first motion platform. this is by far best information for creating one.
Oct 14, 2017 7:25:57 GMT
tmcnam: I must be crazy but I still can't find the blueprints to the platform by GA-Dawg. Any help would be appreciated. Thanks guys.
Mar 10, 2019 21:31:57 GMT
Trip Rodriguez: Sorry tmcnam, the shoutbox doesn't get much attention. Did you find the blueprints? They are at the VERY bottom of the extremely long first post. It says "attachments: 6DOF.zip
May 4, 2019 19:13:25 GMT
zivby: How much weight this setup can carry?
May 19, 2019 11:57:16 GMT