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Definition of a distributed machine health monitoring system : application to the design of a hydraulic marine steer-by-wire system Cullingham, Nicholas Eoghan
Abstract
The objective of this thesis is to define a general tool set for monitoring the health of the physical part of a system that is operated by an embedded computer system. Embedded computer systems are commonly found in industrial, military, transportation and consumer products. Health monitoring is usually required to track the health of actuators, sensors, communication, and computational resources. The novel tool set presented in this thesis provides three measures of component health, all of which indicate errors based on the performance of a system state relative to a base model. A set of software classes is defined, which interacts with an object-oriented model of the physical system that supports distributed processing, fault tolerance and redundancy management. The model based health monitor also integrates into the redundancy management. When a redundant physical sensor fails, the health monitor provides analytical redundancy for that system state, by predicting it and generating adaptive thresholds on the accuracy of the analytical sensor. The health monitoring system has been implemented on an experimental apparatus built to approximate the functionality of a hydraulic, steer-by-wire system for marine applications.
Item Metadata
Title |
Definition of a distributed machine health monitoring system : application to the design of a hydraulic marine steer-by-wire system
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2006
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Description |
The objective of this thesis is to define a general tool set for monitoring the health
of the physical part of a system that is operated by an embedded computer system.
Embedded computer systems are commonly found in industrial, military, transportation
and consumer products. Health monitoring is usually required to track the health of
actuators, sensors, communication, and computational resources.
The novel tool set presented in this thesis provides three measures of component
health, all of which indicate errors based on the performance of a system state relative to
a base model. A set of software classes is defined, which interacts with an object-oriented
model of the physical system that supports distributed processing, fault
tolerance and redundancy management. The model based health monitor also integrates
into the redundancy management. When a redundant physical sensor fails, the health
monitor provides analytical redundancy for that system state, by predicting it and
generating adaptive thresholds on the accuracy of the analytical sensor.
The health monitoring system has been implemented on an experimental
apparatus built to approximate the functionality of a hydraulic, steer-by-wire system for
marine applications.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-01-05
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0080743
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2006-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.