Real measurements - animated

[BystrickyK]

Single pend
https://user-images.githubusercontent.com/55796835/118030253-55f32900-b365-11eb-9d9d-9b3fc8ac4be2.mp4

data_single_fast2.mp4

data_single_fast.mp4

data_single_mid.mp4

Double pend

data_double_mid.mp4

[BystrickyK]

measurements for double pendulum (x1 cart, x2 first pend, x3 second pend), 'u' should be the force on the cart, but its mean value is consistently above 0 for some reason