Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
An apparatus for actively controlling vibration of an object ( 3)which is mounted on a movable base member (1) with vibration-isolating means (2) therebetween, comprising: a vibration sensor (13) secured to said object (3) for detecting vibration thereof; an actuator (12) secured to said object (3) for applying an inverse vibration thereto; and a digital filter (8) with an input (R) connected to said vibration sensor (13) and an output (5) connected to said actuator (12), said digital filter (8) being adapted to generate an output signal for controlling the actuator (12) such that the vibration of said object (3) is at least suppressed by the inverse vibration applied to the object by the actuator.
Claim 2
Independent Claim
115 words
An apparatus for actively controlling vibration of an object ( 3)which is mounted on a movable base member (1) with vibration-isolating means (2) therebetween, comprising: a vibration sensor (13) secured to said object (3) for detecting vibration thereof; an actuator (12) secured to said object (3) for applying an inverse vibration thereto; and a digital filter (8) with an input (R) connected to said vibration sensor (13) and an output (5) connected to said actuator (12), said digital filter (8) being adapted to generate an output signal for controlling the actuator (12) such that the vibration of said object (3) is at least suppressed by the inverse vibration applied to the object by the actuator.
Claim 3
Dependent Claim
35 words
The apparatus as claimed in Claim 1, wherein said digital filter (8) is an adaptive filter adapted to generate an output signal with a waveform having a correlation to a waveform of said object (3).
Claim 4
Dependent Claim
41 words
The apparatus as claimed in Claim 2, wherein said digital filter (8) is adapted to generate an output signal with a waveform which is inversely proportional to, and of a sign opposite to that of the waveform of said object (3).
Claim 5
Dependent Claim
41 words
The apparatus as claimed in Claim 1, Claim 2 or Claim 3, further comprising a second vibration sensor (4) secured to said base member (1) for detecting vibration thereof, said second vibration senior (4) being connected to said digital filter (8).
Claim 6
Independent Claim
57 words
The apparatus as claimed in any one of the preceding claims, comprising a plurality of objects (M 1 , M 2 ....) mounted on said base member (210), wherein one or more of said vibration sensor(s) (S 1 ,S 2 ....) and said actuator(s) (a 1 ,a 2 ....) are secured to selected one(s) of said objects.
Claim 7
Dependent Claim
23 words
The apparatus as claimed in Claim 5, wherein said actuator is arranged between said selected one of the objects and said base member.
Claim 8
Dependent Claim
34 words
The apparatus as claimed in Claim 5, wherein said actuator (a 2 ) is arranged between said selected one (M s ) of the objects and another one (M 4 ) of said objects.