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Title:
冗長駆動モータを備える直接駆動型サーボバルブ
Document Type and Number:
Japanese Patent JP2012533712
Kind Code:
A
Abstract:
A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.

Inventors:
Loafers, john
Application Number:
JP2012520745A
Publication Date:
December 27, 2012
Filing Date:
July 14, 2010
Export Citation:
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Assignee:
Woodward HRD Inc.
International Classes:
F15B20/00; F15B13/044
Domestic Patent References:
JPH01238758A1989-09-22
JPH03113156A1991-05-14
JP2008008470A2008-01-17
JPH07506319A1995-07-13
JP3129293U2007-02-15
JPS548728U1979-01-20
JPH06341412A1994-12-13
JP2003048599A2003-02-18
JPS6148679A1986-03-10
JPS5445421U1979-03-29
Foreign References:
WO2009070358A12009-06-04
Attorney, Agent or Firm:
Kiyoshi Kato