Multiple Fault Isolation in Redundant Systems

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

We consider the problem of sequencing tests to isolate multiple faults in redundant (fault-tolerant) systems with minimum expected testing cost (time). It can be shown ...

Real-Time Surface Traffic Adviser

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

A real-time data management system which uses data generated at different rates by multiple heterogeneous incompatible data sources are presented. In one embodiment, the invention ...

NASA/TM–2003-212270 System Modeling and Diagnostics for Liquefying-Fuel Hybrid Rockets

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

A Hybrid Combustion Facility (HCF) was recently built at NASA Ames Research Center to study the combustion properties of a new fuel formulation that burns ...

Characterization of model-based reasoning strategies for use in IVHM architectures

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Open architectures are gaining popularity for Integrated Vehicle Health Management (IVHM) applications due to the diversity of subsystem health monitoring strategies in use and the ...

Inductive System Health Monitoring

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

The Inductive Monitoring System (IMS) software was developed to provide a technique to automatically produce health monitoring knowledge bases for systems that are either difficult ...

Inductive Learning Approaches for Improving Pilot Awareness of Aircraft Faults

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Neural network flight controllers are able to accommodate a variety of aircraft control surface faults without detectable degradation of aircraft handling qualities. Under some faults, ...

Integrated System Health Management (ISHM) Technology Demonstration Project Final Report

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Integrated System Health Management (ISHM) is an essential capability that will be required to enable upcoming explorations mission systems such as the Crew Exploration Vehicle ...

INDUCTIVE SYSTEM HEALTH MONITORING WITH STATISTICAL METRICS

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Model-based reasoning is a powerful method for performing system monitoring and diagnosis. Building models for model-based reasoning is often a difficult and time consuming process. ...

Data Mining Applications for Space Mission Operations System Health Monitoring

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Recent developments in data mining techniques for anomaly detection make it possible to use the wealth of available archived spacecraft system data to produce advanced ...

On Organization of Information: Approach and Early Work

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

In this report we describe an approach for organizing information for presentation and display. The approach stems from the observation that there is a stepwise ...

Anomaly Detection for Next-Generation Space Launch Ground Operations

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

NASA is developing new capabilities that will enable future human exploration missions while reducing mission risk and cost. The Fault Detection, Isolation, and Recovery (FDIR) ...

General Purpose Data-Driven System Monitoring for Space Operations

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

Modern space propulsion and exploration system designs are becoming increasingly sophisticated and complex. Determining the health state of these systems using traditional methods is becoming ...

Using Medieval Architecture as Inspiration for Display Design: Parameter Interrelationships and Organizational Structure

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

In physical environments such as aerospace and process control, many system components and their associated information are interrelated (e.g., an increase in a chamber temperature ...

A system for fault management and fault consequences analysis for NASA’s Deep Space Habitat

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

NASA's exploration program envisions the utilization of a Deep Space Habitat (DSH) for human exploration of the space environment in the vicinity of Mars and/or ...