Propulsion IVHM Technology Experiment Overview

A Publication, EDWARD BALABAN's Collection - 11 years, 10 months ago

Shared By: EDWARD BALABAN

NASA researchers recently demonstrated successful real-time fault detection and isolation of a virtual reusable launch vehicle main propulsion system. Using a detailed simulation of a ...

Propulsion Health Monitoring of a Turbine Engine Disk using Spin Test Data

A Publication, Disk Defect Data - 11 years, 1 month ago

Shared By: Nikunj Oza

On line detection techniques to monitor the health of rotating engine components are becoming increasingly attractive options to aircraft engine companies in order to increase ...

Airborne Electro-Mechanical Actuator Test Stand for Development of Prognostic Health Management Systems

A Publication, FLEA - 13 years, 3 months ago

Shared By: Sriram Narasimhan

With the advent of the next generation of aerospace systems equipped with fly-by-wire controls, electromechanical actuators (EMA) are quickly becoming components critical to safety of ...

Combining Model-Based and Feature-Driven Diagnosis Approaches – A Case Study on Electromechanical Actuators

A Publication, FLEA - 13 years, 3 months ago

Shared By: Sriram Narasimhan

Model-based diagnosis typically uses analytical redundancy to compare predictions from a model against observations from the system being diagnosed. However this approach does not work ...

ATC Taskload Inherent to the Geometry of Stochastic 4-D Trajectory Flows with Flight Technical Errors

A Publication, IDEAS - 13 years, 3 months ago

Shared By: Vlad Popescu

A method to quantify the probabilistic controller taskload inherent to maintaining aircraft adherence to 4-D trajectories within flow corridors is presented. An Ornstein- Uhlenbeck model ...

Trajectory Clustering and an Application to Airspace Monitoring

A Publication, IDEAS - 13 years, 3 months ago

Shared By: Vlad Popescu

This paper presents a framework aimed at monitoring the behavior of aircraft in a given airspace. Trajectories that constitute typical operations are determined and learned ...

Block-GP: Scalable Gaussian Process Regression for Multimodal Data

A Publication, Ashok Srivastava's Collection - 10 years, 4 months ago

Shared By: Ashok Srivastava

Regression problems on massive data sets are ubiquitous in many application domains including the Internet, earth and space sciences, and finances. In many cases, regression ...

Block-GP: Scalable Gaussian Process Regression for Multimodal Data

A Publication, Kamalika Das's Collection - 13 years, 4 months ago

Shared By: Kamalika Das

Regression problems on massive data sets are ubiquitous in many application domains including the Internet, earth and space sciences, and finances. In many cases, regression ...

Ashok Srivastava

Distributed Monitoring of the R2 Statistic for Linear Regression

A Publication, Kanishka Bhaduri's Collection - 13 years ago

Shared By: Kanishka Bhaduri

The problem of monitoring a multivariate linear regression model is relevant in studying the evolving relationship between a set of input variables (features) and one ...

Fast and Flexible Multivariate Time Series Subsequence Search

A Publication, Ashok Srivastava's Collection - 10 years, 4 months ago

Shared By: Ashok Srivastava

Multivariate Time-Series (MTS) are ubiquitous, and are generated in areas as disparate as sensor recordings in aerospace systems, music and video streams, medical monitoring, and ...

Metrics for Offline Evaluation of Prognostic Performance

A Publication, Prognostics CoE Publications - 13 years, 5 months ago

Shared By: Kai Goebel

Prognostic performance evaluation has gained significant attention in the past few years. Currently, prognostics concepts lack standard definitions and suffer from ambiguous and inconsistent interpretations. ...