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Dive into the research topics where John Harry Down is active.

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Featured researches published by John Harry Down.


ASME Turbo Expo 2000: Power for Land, Sea, and Air | 2000

Model-Based Detection of Leaks and Blockages in Pipes

Anju Narendra; John Harry Down; Kirk Mathews; Ravi Rajamani; Sal Albert Leone; Jonathan Carl Thatcher; Bruce Gordon Norman

This paper deals with a model-based strategy for detecting leaks and blockages in a network of pipes. The fault detection and isolation (FDI) system uses a Kalman filter and a model of the piping system to decide whether the system is operating in a normal or failed state, and to distinguish the type of fault. While the idea of using Kalman filters is quite old, its application in the present case is novel, as is the formulation of the FDI system that uses only one model. The theory is backed by experimental validation on a test rig.Copyright


Archive | 2000

Model-based detection of leaks and blockages in fluid handling systems

Harry Kirk Mathews; Anju Narendra; Ravi Rajamani; Bruce Gordon Norman; John Harry Down; Sal Albert Leone; Jonathan Carl Thatcher


Archive | 2006

System and method for system-specific analysis of turbomachinery

Harry Kirk Mathews; John Harry Down


Archive | 2007

System and method for turbine engine clearance control with rub detection

Emad Andarawis Andarawis; William Lee Herron; Samhita Dasgupta; John Harry Down; Mahadevan Balasubramaniam; David So Keung Chan; David Walter Parry


Archive | 2009

System and method for clearance estimation between two objects

Zhiyuan Ren; Wayne Charles Hasz; Emad Andarawis Andarawis; David So Keung Chan; David Shaddock; John Harry Down; Samhita Dasgupta; William Lee Herron; David Walter Parry; Cheryl Lynn Herron; David Richard Esler; Mahadevan Balasubramaniam


Archive | 2010

Automated sensor specific calibration through sensor parameter download

Emad Andarawis Andarawis; Wayne Charles Hasz; David So Keung Chan; David Shaddock; John Harry Down; Samhita Dasgupta; David Walter Parry; David Richard Esler; Zhiyuan Ren; Mahadevan Balasubramaniam; William Lee Herron


Archive | 2008

ELECTRONIC SELF-CALIBRATION FOR SENSOR CLEARANCE

Emad Andarawis Andarawis; Wayne Charles Hasz; David So Keung Chan; David Shaddock; John Harry Down; Samhita Dasgupta; David Richard Esler; Zhiyuan Ren; Mahadevan Balasubramaniam; Ibrahim Issoufou Kouada


Archive | 2001

Method and system for sensor fault detection

John Harry Down; Harry Kirk Mathews


Archive | 2002

Method, system and computer product for building calibration lookup tables from sparse data

John Harry Down; Harry Kirk Mathews


Archive | 2013

System and method for monitoring braking effort

Bryan Scott Hermsen; Ajith Kuttannair Kumar; Harry Kirk Matthews; John Harry Down; Brian Nedward Meyer

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