R&D (Roberts Linkage)
KoheiMitsuhashi - 17:34, Sunday 04 June 2023 (3265)
measure transfer function and Q factor of Roberts Linkage

I measured the transfer function and Q factor of Roberts Linkage of which depth is 250mm.

The results were as follows.

  Fig1 Fig2
COM position [mm] 80 37
Resonant Frequency [Hz] 0.33 0.20
Q factor 2240 ---

I measured the resonant frequency by fitting transfer function. The results were attached.

I measured Q factor by ring down curve.
I can't measured Q factor of which COM position is 37mm, because ring down curve is affected by the another axis' motion.
I tryed doing FFT to ring down curve of which COM position is 37mm. 
The result related to ring down curve were also attaced.

Images attached to this report
3265_20230604103410_12473124631252212540125311247112519124831248820230604172333.png 3265_20230604103418_12473124631252212540125311247112519124831248820230604172441.png 3265_20230604103426_12473124631252212540125311247112519124831248820230604172148.png 3265_20230604103435_12473124631252212540125311247112519124831248820230604172521.png 3265_20230604103441_12473124631252212540125311247112519124831248820230604172543.png