Research Projects

Precise optical experiments andmeasurements require very stringentvibration isolation on the platform onwhich the experiment has to be conducted.A vibration isolation system requiring anattenuation of vibrations above 0.3 Hz,including ground vibrations have to beattenuated for elimination any vibrationinduced errors during the experiment.A 6 D.o.F. active cum passive isolationsystem using Negative StiffnessMechanisms (NSMs) for the passiveisolation system is proposed. The NSM isrequired to have its natural frequency at0.5Hz or lower and vibration attenuationfrom the passive isolation system isexpected from 0.7 Hz or lower to 100Hz.The active vibration isolation is expected toattenuate vibrations from 0.3 Hz to 0.7 Hzand any other structural frequencies within0?100Hz.