Active mass damper

Details Active mass damper Active mass damper

2006-01-31

2006-01-31

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S592000, C248S636000, C248S637000, C248S638000

Reexamination Certificate

active

06992450

ABSTRACT:
The invention provides an active mass damper by use of which a machining apparatus can be downsized. The active mass damper includes a support unit for supporting a weight movably and horizontally, a motor for driving the weight, and a controller for controlling the motor. A torque command signal to be given to a motor of an X-table and a torque command signal to be given to a motor of a Z-table are put into the controller of the active mass damper so that the motor for driving the weight can be driven by feed-forward control using the torque command signals and feedback control based on the displacement of the weight.

REFERENCES:
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patent: 5445249 (1995-08-01), Aida et al.
patent: 5816559 (1998-10-01), Fujimoto
patent: 5906254 (1999-05-01), Schmidt et al.
patent: 5931441 (1999-08-01), Sakamoto
patent: 6036162 (2000-03-01), Hayashi
patent: 6771354 (2004-08-01), Kato

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