Vibration removing apparatus and method thereof

Details Vibration removing apparatus and method thereof Vibration removing apparatus and method thereof

1996-03-26

1997-08-05

Butler, Douglas C.

Brakes

Inertia of damping mass dissipates motion

248550, 267136, F16M 1300

Patent

active

056533179

ABSTRACT:
An active vibration removing apparatus having an air-spring as an actuator, includes: a vibration removing table, a supporting air-spring for supporting the vibration removing table, a servo-valve for adjusting the pressure of the air-spring, and a feedback system for controlling the servo-valve. A pseudo-differentiator pseudo-differentiates a speed adjustment signal of a device placed on the vibration removing table. A pulse selector for selects an arbitrary numbers of pulse waveforms from a series of pulse waveforms outputted from the pseudo-differentiator. The output of the pulse selector is feedforwarded in the feedback system.

REFERENCES:
patent: 5478043 (1995-12-01), Wakui
patent: 5504407 (1996-04-01), Wakui et al.
patent: 5511930 (1996-04-01), Sato et al.

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