- Put excitation signal at the longitudinal resonance, and esimated the coupling raito between oplev yaw signal and len signal.
- No oplev control was engaged for this measurement
- resonant frequency is 0.66 Hz for PR3 and PR2
- The oplev signal with excitation after the diagonalization is shown in attached plot.
- PRM has been diagonalized by Shoda-san. I measered the spectrum with the excitation in L with/without non-diagonal component, and attached it.
- Even after the diagonaization of the sensor, the PR2 has a large peak in yaw oplev even I excited in longitudinal direction. It might be because of the actuator, but I'm not sure.