P09451 System Level Review

Bryan McCormick (ME) Project ManagerAndy Freedman (ME) Heat Transfer/Fluids Analysis & Design

John Kreuder (ME) Thermal ModelerKen McLoud (ME) Structural Designer

Jon Holdsworth (EE) Electrical System DesignerGabriela Santa Cruz (IE) Engineering Economics

Current System

Current System

System Diagram

Electrical Schematic of Current Test Platform

Electrical Schematic with Shunt Resistor R3

Feasibility Study

• Technology and System Feasibility– Difficulties of implementation in a large scale system. – Outline design of system from input requirements and

processes to outputs and fields of application.– Analysis of Technology/Procedures/Other

improvements that would further increase benefits.

• Economic Feasibility– Cost/Benefit analysis for a module’s lifecycle.– Benchmarking alternative technologies.

Assessing the Reliability of Data

• Accurate - Free from material error

• Consistent - Yields same results repeatedly

• Complete - Includes all elements

• Valid – Does the data actually represent what is believed to be measured?

Are the associated risks and errors significant to cause a reasonable person to doubt a finding, conclusion or recommendation?

GAGAS (Generally Accepted Government Auditing Standards)

Review information

about the system

Review information

about the system

Significance of data to

objectives

Significance of data to

objectives

Initial TestingInitial Testing

Level of RiskLevel of Risk

Corroborating evidence

Corroborating evidence

Reliable data or

not?

Reliable data or

not?

Previous Senior Design studies, reports that contain information about the system and its data.

Previous Senior Design studies, reports that contain information about the system and its data.

Will data be the only evidence supporting a finding?Will data be used only for information?

Will magnitude of errors in data be an issue?

Will data be the only evidence supporting a finding?Will data be used only for information?

Will magnitude of errors in data be an issue?

Uncertainty Studies, Gage R&RSearch for missing data

Anomalies in data – outside of range

Uncertainty Studies, Gage R&RSearch for missing data

Anomalies in data – outside of range

Likelihood that using data of questionable reliability will have significant negative consequences to the

customers.

Likelihood that using data of questionable reliability will have significant negative consequences to the

customers.

Strength of other types of evidence – documentary, physical, testimonial.

Strength of other types of evidence – documentary, physical, testimonial.

Data are sufficiently reliable – significant errors or incompleteness is minimal

Data are not sufficiently reliable – could lead to incorrect messages

Data have undetermined reliability – further testing

Data are sufficiently reliable – significant errors or incompleteness is minimal

Data are not sufficiently reliable – could lead to incorrect messages

Data have undetermined reliability – further testing

T=440T=420 T=417

T=414

T=364