my English is bad and the video is difficult to understand. I probably wrong Startup with the use of the software. Video can be directly with the startup configuration would be more meaningful?
Hello thanks a lot for the videos. Please download the latest version I've just published (see at the begining of this thread). I've fixed the issues of 2,3,4,5 DOF not working. Now it should also work with 2 DOF config. Let me know.
I agree that for the PID setup I have to seat on the simulator but now for me it's not possible until the overshooten problem not solved.
i think that the problem is when the position is overshooten the amc try to reach the new position but keeping the same direction ( CW or CCW depends of the actuator) .that means a complete turn to get the new position and not change over the direction.
Hello Gilles please download latest version (begining from the thread) There I disabled the buttons for manual move until heave evaluation has been completet successfull. That means the plattform starts moving from there. Also I've set Min to 20000 and Max to 40000 so we are somewhere in the 30% mid range for "jumps" to be a bit more save.
Thanks Fabi ! Will give a try in the next minutes and give a report !
Ok made a few tests and the results.I start the Pid auto tune from the mid postion each time.What I not yet completly understood is to start the auto tune procedure .I pushed the up button in the manuel menu and then launched the auto tune after.
1- no overshooten position 2- always crash for the osciloscope when adjusting the left cursors ( look pic) 3- made three times the procedure for'auto tuning and for each test never get I or D values , only P term ( from 30 to 45).I don't know why , maybe I stop the auto tune test before great oscillations , I don't know ! look at the pics from,sensors feedback positions. For all these tests I decreased my max motor speed to 50% to keep the sim safe in case of emergency. Pics will follow.
Can you explain "Tick dashed" "Highlight actor position axis" and "Hide actor position axis"? thanks. Can you tell me how many minimum peak it take? on the video you indicate 8 not counting the first, right? there is a minimum? Approximate or it's got to be precise?
now I can no longer make and use "evaluate heave position platform" both versions no longer works. 2 DOF or 6DOF, I was unable to validate "evaluate heave position."
Yesterday, I arrived with version 1.0 and now impossible with 2 versions
Hi Fabi , I tested your last update and now the overshooten problem never happened.It's a good think ! Hope this point solved. Always sometimes osciloscope crashed but seems to be a little better or it's me who adjusting cursors with more accuracy ;-)
But I made the auto tune process several times and I get only a term P from 40 to 80 and always I = D = 0 .I measure the period like you made in yout video tuto and always the values in autôtune window still stay to XXX .I ask myself if the calculation is ON !?
For the rest I noticed anything wrong.Just forThanos maybe because when increasing the P to achieve oscillations I noticed that the motors 2 4 6 was shaking and the motors 1 3 5 no oscillations.My setup on my 6 dof is like i suppose everyone to pos 135 neg 246.
<Bug>: I get again freezing of the oscilloscope if I move one of the sensors to the lower position ( near zero). <bug>: if I click OFF on the oscilloscope the values jump to the start but does not clear the screen, leaving a mess... <request>: Can you change the default value of the "frequency of the Burst Feedback" to 16 on the start of the program? (I could enforce it in firmware if not...) It seems that if its set to 100hz, the counter that moves the motors up or down, is slowing down too much, perhaps skipping steps as well.
So to help people understand the procedure:
1. Do the sensor evaluation, 2. In the PID Tuning tab, click on the button that states that you understand the risks of using that PID tuning code. 3. Open the oscilloscope and press the ON button ( it will display smooth waves as long the timeout is not reached, set the timeout of the 6DOF parking position to 60 or 90 seconds from the Controller config tab. 4. From the manual motion tab, press the up or down, to get the motion going. 5. Back to PID tuning tab, click on increment P value. And keep increasing until you see oscillation on the motors. 6. When the motors start oscillate press the button to stop the motion. 7. Click on two of the recorded peaks on the oscilloscope, and set the correct number of peaks between the two points. 8. You should see the correct PID calculation on the PID tuning tab.
I have the same problem. the first time I got to spend "evaluate current position Platform heave" but then in auto tuning, he would not confirm when I clicked on validation. I tried a second time restart the app and now it hangs on the manual step "evaluate current position Platform heave" the same in 2DOF or 6 DOF no way to go further. may be the reading of the position? it awaits potentiometer value anyway?
may be there should be one DOF, 1 axis, 1 potentiometer. 2 axis potentiometer 2 ...
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