PHM Module User Manual: Nomenclature and Introduction

Subtitle: "Sensor Analyses & Optimization"

1. Nomenclature

Term/Acronym	Definition
ACC	Accuracy
BACC	Balanced Accuracy
CSV	Comma Separate Values
TP	Component Test Point (also used elsewhere for True Positive — see context)
FAR	False Alarm Rate
FBD	Functional Block Diagram
FCM	Fuzzy Cognitive Mapping
FN	False Negative
FNR	False Negative Rate
FP	False Positive
LRN	Likelihood Ratio Negative
LRP	Likelihood Ratio Positive
MADE	Maintenance Aware Design Ecosystem
MCC	Matthews Correlation Coefficient
MTTF	Mean Time to Failure
NPV	Negative Predictive Value
PHM	Prognostics and Health Management
POD	Probability of Detection
PPV	Positive Predictive Value
SPC	Specificity
TN	True Negative
TP	True Positive
XML	Extensible Mark-up Language

Note: the source nomenclature table lists "TP" twice — once for "Component Test Point" and once for "True Positive" — this is preserved from the original document; context in later sections disambiguates which meaning applies.

2. Introduction

2.1 Overview

This manual provides information about the features and processes required for a user to analyze diagnostics designs for a system using the PHM Module. The purpose of this manual is to familiarize the user with the Prognostics and Health Management (PHM) module and its functionality. The Vehicle Platform (an exemplar model and should not be used for commercial purposes) located in the MADE Example Systems Library is used throughout this manual.

2.2 Objectives

The main objective of this manual is to describe how the PHM module is used for the following:

• Analyzing a Functional Block Diagram (FBD) system to determine sensor test points
• Modify existing sensor arrangements based on user knowledge or trade-offs
• Optimizing sensor coverage using Sensor Sets
• Enter or customize sensor information into a Sensor Library

2.3 System Example

This manual requires the Vehicle System model obtained from the MADE Example Systems library viewer (Mechanical > Vehicle System). Using a different model will result in different analysis times, hierarchical structures, and may not feature all the necessary data to fully demonstrate all features in the PHM module.

2.4 User Workflows

The workflows explain the steps required to:

• Define item test point sensors (Figure 1)
• Analyze diagnostic capability for inherent and/or design sensors (Figure 2)
• Optimize diagnostic capabilities using user sensor sets (Figure 3)

(Figures 1-3 are workflow diagrams/images with no additional extractable text beyond their captions: "Defining Item Test Point Sensors"; "Analyze diagnostic capability for inherent and/or design sensors Workflow"; "Optimize Diagnostic Capability workflow".)