Patent ID: 7715948

Claim:
A regulating apparatus of a vibration isolation system with one or more vibration signal transducers ( 10 ) that are for providing sensor signals in analogue form and one or more actuators ( 50 ) which are intended to suppress vibrations and can be driven by supplying actuator actuation signals, the regulating apparatus being designed to process the sensor signals to form such actuator actuation signals, the regulating apparatus comprising: a first regulating device ( 20 , 22 ) which operates in a digital manner, for providing digital processing of a first portion of the sensor signals to form digital actuator actuation signals; a second regulating device ( 30 , 32 ) which operates in an analogue manner, for providing analogue processing of a second portion of the sensor signals to form analogue actuator actuation signals, wherein processing of the sensor signals is divided across the digital processing and the analogue processing according to frequency range; an input circuit which is coupled to inputs of the first and second regulating devices, wherein the input circuit is for supplying the sensor signals to the first regulating device and the second regulating device; and an output circuit ( 40 ) which is coupled to outputs of the first and second regulating devices, wherein the output circuit is for combining the digital actuator actuation signals from the first regulating device and the analogue actuator actuation signals from the second regulating device, to form common actuator actuation signals for driving the one or more actuators; wherein the contribution of the digital processing and the contribution of the analogue processing, in forming the common actuator actuation signals, are weighted at least in one transition range of frequency, in which the sensor signals are processed in both a digital and analogue manner.