Title:
STALL SIGN DETECTOR AND DETECTION METHOD, AND ENGINE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2007/135991
Kind Code:
A1
Abstract:
A stall sign detector of an axial flow compressor comprising a rotor provided
with a plurality of rotor blades, and a tubular casing provided oppositely to
the rotor blades to cover the outer circumference of the rotor further comprises
one or a plurality of pressure sensors provided at each of a plurality of positions
on the inner wall face of the casing in the circumferential direction, a device
for calculating an index (stall risk evaluation index) for evaluating stall
risk based on time series data detected by each pressure sensor, and a signal processor
for detecting a sign of stall based on the stall risk evaluation index obtained
in association with each pressure sensor. A stabilized, high precision (high
sensitivity) stall risk evaluation index essential for active stall control
is thereby attained, and a stabilized, high reliability engine control system
can be achieved.
Inventors:
NAKAKITA TOMOFUMI (JP)
TOMIYAMA TAKASHI (JP)
TAKEMURA FUMITAKA (JP)
TOMIYAMA TAKASHI (JP)
TAKEMURA FUMITAKA (JP)
Application Number:
PCT/JP2007/060230
Publication Date:
November 29, 2007
Filing Date:
May 18, 2007
Export Citation:
Assignee:
IHI CORP (JP)
IHI SCUBE CO LTD (JP)
NAKAKITA TOMOFUMI (JP)
TOMIYAMA TAKASHI (JP)
TAKEMURA FUMITAKA (JP)
IHI SCUBE CO LTD (JP)
NAKAKITA TOMOFUMI (JP)
TOMIYAMA TAKASHI (JP)
TAKEMURA FUMITAKA (JP)
International Classes:
F04D27/00; F02C9/00; G05B9/03
Foreign References:
| JP2002364582A | 2002-12-18 | |||
| JPS5387906U | 1978-07-19 | |||
| JPH07248273A | 1995-09-26 | |||
| JPH0553658A | 1993-03-05 | |||
| JPH045201B2 | 1992-01-30 | |||
| JPH06213000A | 1994-08-02 | |||
| JPS5059612A | 1975-05-23 | |||
| JPH10502992A | 1998-03-17 | |||
| JP2004124946A | 2004-04-22 | |||
| JP2005188514A | 2005-07-14 |
Attorney, Agent or Firm:
SHIGA, Masatake et al. (Yaesu Chuo-k, Tokyo 53, JP)
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