Effect of external excitation on dynamic characteristics of vibro-isolating table

Abstract

Performance of optical table with pneumatic vibration isolators is analyzed within 2–50 Hz frequency range. Specific vibrational excitation platform with a vibrator of the frequency range of 1–50 Hz in one of three directions were tested. The following pneumatic vibration isolator dynamic parameters were identified: − transmissibility of vertical oscillation characteristics at 50 Hz frequency range; − resonant frequency (vertical direction); − damping efficiency at 5 Hz to 10 Hz for excitation frequencies.