Hello, my fly wheel has had an issue with the speed of my fly wheel. When we use our fly wheel at low speed, the motors go into this weird cycle of slowing down and speeding up. Does anyone have any advice? (It is powered be 2 blue insert motors with a 7:1 gear transfer)
Btw we are spinning the flywheel without a shooting disks and the speed is still inconsistent.
A 4200 rpm flywheel is unnecessary but you can use it if you want. The best way to solve your problem (assuming there’s nothing wrong with your motors) would be to implement some sort of velocity control such as PID or TBF.
How much does it slow down?
It could be the built in velocity contorl. I found that when useing the device screen on the brian that the power fluctuated there might be a connection between that and the velocity.
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I’ve had that same issue before, I just upped the velocity percentage and it worked fine. I agree that it some sort of velocity control issue, probably due to how much torque is needed to speed up a flywheel at that ratio.
Gotta tune your own PID. Just a p controller will work wonders. You might have
kP = .15
setflywheelvoltage(8-kP*flywheelerror)
and you could call it a day
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Thank you all for your suggestions but the issue was with the construction of the flywheel itself. Again, appreciate the help.
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Our team had a similar issue with an oscillating flywheel using standard motor controls. Our solution was to use voltage to control the flywheel rather than speed. In the long run the best solution is to use some control program like pid.
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