Patent ID: 8073571

Claim:
A method for controlling a vibration isolation system, the method comprising: generating a sensor signal representing vibrations by means of a vibration-signal transmitter; amplifying the sensor signal for correcting frequency-dependent sensitivity of the vibration-signal transmitter, resulting in an amplified sensor signal, the amplifying comprising: i) a first amplification in a first frequency range by means of an analog amplification stage, and ii) a second amplification in a second frequency range by means of a digital amplification stage, iii) wherein the first amplification and the second amplification jointly amplify the sensor signal below a lower cutoff frequency of the vibration-signal transmitter, such that a frequency response is achieved with substantially linear sensitivity over a predetermined frequency range that is below the lower cutoff frequency; generating an actuator control signal by processing the amplified sensor signal; and controlling an actuator with the actuator control signal for counteracting the vibrations with respect to a mass to be vibration isolated.