Title:
MIXED FLUID BEARING, RIGIDITY OF WHICH IS COMPENSATED BY ELECTROMAGNETIC EFFECT
Document Type and Number:
Japanese Patent JPH01172631
Kind Code:
A
Abstract:
PURPOSE: To prevent the interrupt of bearing by arranging a servo control electromagnetic bearing as an annex to a fluid bearing between a pipe element and a rotating shaft, and controlling the exciting current in response to the signals detected by a vibration detector and a position detector. CONSTITUTION: An electromagnetic bearing different from a fluid bearing 30 is formed between a casing 2 and a rotatable shaft 1 by a servo control element 3 fixed in the casing 2. A vibration added on the casing 2 is detected by a vibration detector 40 and is input to a power amplifier 60 through an integrate circuit 42 and a zone filter 43, and a displacement of the rotatable shaft 1 relative to the casing 2 is detected by a position detector 7 and is input to the power amplifier 60 through an automatic balancing network 52 which automatically balances the signals detected from the windings 8 and a signal modifying network 53 to control the exciting electric current fed to the electromagnetic windings corresponding to each signals. Therefore, even in the case that a heavy load is added in a short time, the interrupt of the casing and the rotating shaft can be prevented.
Inventors:
ERUMIYU ABERUMAN
Application Number:
JP32753487A
Publication Date:
July 07, 1989
Filing Date:
December 25, 1987
Export Citation:
Assignee:
MECANIQUE MAGNETIQUE SA
International Classes:
F16C32/00; F16C17/02; F16C39/02; F16C39/06; F16F15/18; (IPC1-7): F16C32/00; F16F15/18
Attorney, Agent or Firm:
Aoki Akira (4 outside)