Something to consider... I see definite movement of the motor and reduction gearing. It appears that before the load begins to move, the PID loop believes it is moving the load then "winds up" when load finally moves this stored energy unloads causing an unexpected feedback "jump" then the PID may be backing off and so begins an oscillation that repeats. Perhaps firming up the mechanical components would tie the movement to the PID. Just an observation. Hope this helps.
I made a video to show small effects, the differences with a range with 3g and a range with 10G. small effects are still there, the largest range allows more details.
just to compare and to provide information No ramp 0.0 45.0.0 PID Motor 30 RPM AMC motor Max Speed 100% min 0% oversample 1 0.0 analog filtering in the drive all drive parameter are optimized speed and reaction
I would make a video to show the loss of information with a ramp
I ask myself many questions, seeing your simulators and settings. it is now long as I practice, I have already a simulator 2 DOF with AC motor. I absolutely do not understand the settings you have on your drive and the AMC 128. for me they really go against what should be done.
I do not like to comment without justifying myself, so I you make videos is speaking, I let you judge.
you have my optimized settings on video, with or without load. it changes little thing if the engine is quite powerful.
sorry for the traduction ... some new project. I advanced a little, I soldered my columns for fixing the poles, it will allow me to move forward on finalizing the installation. Subsequently, it is already well advanced: verif measurements and manufacturing of X holding the poles, mounting tabs ... as originally planned but awaiting verif, making a 2 nd cross mountings 3 poles, they will be sandwiched. less cool: I'll change what I do and turn the engine mount flat front welded to the tube. if I did not galley too much and it's clean as I like, I turn the other to return to single tube. then cut new engine mounting plate I welded on the tube itself
the aim is to put the rods parallel to the tube so that the displacement is linear in the axis of "actuators"
At the same time, I soldered my other 2 wheel bracket, the first being sold to our friends from the forum.
I'll then passed to the finalization of the study of the hub will make the rotation of the assembly. fixing on the cross will certainly adjustable to allow for advanced the point of rotation, to increase the distance of the center of rotation.
Modified: I started to cut flat front or pass the cam. it's a bit of a chore, but that did ... make and unmake it is working!
the purpose of this mod is twofold: - Move the engine toward the center to position, the cylinder axis to the half of the cam, that to the symmetry of the displacement. - Move the engine back to the connecting rod is parallel to the displacement of the actuator.
I will definitely delete all the flat, my manic side.
it will be much better that way, I'm sorry I was a little fast on this point ... especially since I had hesitated to weld immediately engine mounts without having tested true position with engines .... That'll teach me.
then the new base engine will be a mounting plate 10 mm thick to be able to screw threaded engines.
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