ฝัง
- เผยแพร่เมื่อ 5 ก.ค. 2024
- A simple explanation of what I have considered when sizing basic servos drives.
• For a general overview of Key Servo concepts: • Servo Motor Sizing Bas...
• For mathematical proof of optimised inertia ratio:
pdfs.semanticscholar.org/f1d3...
www.automateshow.com/filesDow...
• For Equations
www.haydonkerkpittman.com/-/m...
fab.cba.mit.edu/classes/961.04...
• For a simple explanation of control loops
www.motioncontroltips.com/ser... - วิทยาศาสตร์และเทคโนโลยี
And this is actually the most serious approach to servo selection in DIY cnc world i've seen so far. Keep it up mate! Subscreibed!
Really appreciate what you share. Many thanks.
Hey man! Thanks for making this video. It has been really helpful. I'm making a moving gantry router myself and the gantry will weigh around 180kg and I'll use two 750W servos. I was concerned if they'll do the job but after using the equations you've showed us I think they will be enough!
Thanks again. I'll contact you when I run into some troubles with the time comes to work on the electronics. Hehe j/k
Glad it was helpful! Just be mindful of the stiffness between the servos and the output (use stiff couplers). I have a belt application using one of these servos for the spindle assembly and i can tell you that the servos will not work out of the box in this situation. I am now trying to tune them..... (hopefully ill have a video out on it!)
Interesting, thank you.
super Video great information
Thank you
How does the drive able to maintain " constant torque " at different velocity .
Hi!
Love your elaboration on the topic!
Is it too much to ask, if you could put these formulas into a google spreadsheet or excel file, so each weight/pitch/torque can be adjusted for each type of machine?
It would really help me, as this math is a little bit overwhelming.
Initially i was thinking to use one servo and two HTD 3M belts to drive two ball screws. Now, after the lecture from you, i'm concerned if such a long belts will do. And then anothe concerns came in: if i use two servos for X axis - how to hook them up together/synchronize so they run in parallel without skewing my gantry!? What if one servo fail, issue error signal, but it will take time for the second one to stop/trip...
Hi there! Thanks for all this math! Do you have any software to tune this servos?
Hi. Unfortunately not, to tune these servos you need to manually change the gain settings on the drive. The list of parameters available is comprehensive and i think if you write some software and interface some hardware to look at the raw encoder values you can tune them effectively however i have not tried. I opted to oversize them for now. I may in the future look to write some software and interface hardware.
@@vhospher6463 that would be amazing! of course the basic things would be nice, but the advance stuff would be a dream, like auto tuning, the feedback let you know how it response with the ramps of power given, basically to be able to make a routine good enough to make the guess work. You inspire me, I would help on this, I am a little tired with so much work for now, but yess I love the idea!
I keep seeing these flexible couplings. I have been using them for 40 years but _never_ for torque-transmission, only for coupling encoders to shafts. To me, using these things for motor coupling is lunacy....might as well use a rubber band for a drive-belt.
Just gave up building my servo cnc ..😫😫😫😂
haha....sorry it had this effect!