Patent ID: 8915479

Claim:
An anti-vibration apparatus comprising: an anti-vibration base; a plurality of supporting mechanisms configured to support the anti-vibration base; a plurality of actuators configured to apply a force to the anti-vibration base; an obtaining unit configured to obtain vibration data which represents vibrations on the anti-vibration base; a first calculation unit configured to calculate, based on the vibration data obtained by the obtaining unit, a force to be applied to the anti-vibration base so as to reduce the vibrations on the anti-vibration base; and a distribution unit configured to distribute the force calculated by the first calculation unit to forces to be applied by the plurality of actuators to the anti-vibration base, wherein the distribution unit includes: a separation unit configured to separate the force calculated by the first calculation unit into a first force including only force components in a first frequency band and a second force including only force components in a second frequency band lower than the first frequency band; and a second calculation unit which has, for respective frequency bands, distribution ratios required to distribute the force calculated by the first calculation unit to the plurality of actuators and is configured to calculate the force to be applied by each of the plurality of actuators to the anti-vibration base by adding a result obtained by multiplying the first force by a first distribution ratio of the distribution ratios and a result obtained by multiplying the second force by a second distribution ratio different from the first distribution ratio.