[Okutomi, Fujii]
* Transfer function measurement without damping
Force transfer functions of IM, GAS are meausured without damping. The resonance peak seems to be followed 3D ridid-body simulation:
https://drive.google.com/file/d/0BzLfrEtapJaoX2E2QTdBeEV1UkE/view?usp=sharing
* IM damping filter setting
We set damping filters : zpk([0],[10,10],1,"n") , for 6 DoF of IM, then look for better gain. The setting gains, RMS amplitudes for each DoF are shown in below table.
* Transfer function measurement with damping
After equipping the damping filter, the spectra is measured, again. (the result is shown in 160301pr3spectrawithctrl.pdf .)
---------------------------------------------------------------------------------------------------------------------------------------------------------
RMS amplitude VIS_CUST_TYPEBP_DAMP_SIX.adl RMS amplitude
w/o damping K1-VIS-PR3_IM_DAMP_**_GAIN filter "-1" with damping
---------------------------------------------------------------------------------------------------------------------------------------------------------
LIM ~ 0.5 um 300, 1 (**) ~ 0.1 um
TIM ~ 1 um 30, -1 ~ 0.3 um
VIM ~ 0.5 um 30, -1 ~ 0.3 um
RIM ~ 0.1 urad 300, -1 ~ 0.06 urad
PIM ~ 0.7 urad 100, -1 ~ 0.1 urad
YIM ~ 1 urad 10, -1 ~ 0.06urad
---------------------------------------------------------------------------------------------------------------------------------------------------------
Note[1] : Some gains wrtitten in "K1-VIS-PR3_IM_DAMP_**_GAIN" should be tuned to damp the peak better.
Note[2] : OSEM2EUL or EUL2OSEM matrix seems to be modified. (**) column shold be "-1".
