prognostic health management€¦ · microsoft powerpoint - ringdown demo.pptx created date:...
TRANSCRIPT
Prognostic Health Management
for
CRITICAL SYSTEMS
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Degradation Rates Dependant on Environmental Conditions
Usage EnvironmentUsage monitoring would provide a safety benefit if actual usage is more severe than predicted (see the red region, T1).Service life can be extended beyond normal replacement time if the actual usage severity is known (see the green region, T2).
MTBF statistical expected life
T1 T2
CBM enables replacement only upon evidence of need
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Electronic Prognostic Technology
forPower Supplies
3
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Ridgetop develops electronic prognostic solutions for critical systems:
Builds test beds for fault injection. Configures algorithms for “prognostics-enabling” critical systemsSentinel NetworkTM data collection software to complete solution.
Prognostic Solutions
Steps to Design a Prognostic Solution
www.ridgetopgroup.com www.qstar.be Q-Star Test nv5
Failure Modes and Effects AnalysisRoot Cause Analysis used for Failure Modes and Effects Analysis (FEMA)
Customer returns
Capacitors are significant cause of power supply failures as reported here by Murata
When Capacitors fail (short to GND), they also short out diodes
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Prognostic Sensor Integration
To PHM Reasoner
www.ridgetopgroup.com www.qstar.be Q-Star Test nv7
Power Supply Test bed & Sensor
The connection between the SMPS regulated output voltage and the PS sensor are these two cables (red & black). The connection is made at any convenient location along the Power Bus in a system.
www.ridgetopgroup.com www.qstar.be Q-Star Test nv8
Block Diagram of Testbed & Sensor
To PHM Reasoner
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Condition: Good
Thresholds set by degradation FMEA:
• VR exceeds predefined Spec
• VR as good as new
www.ridgetopgroup.com www.qstar.be Q-Star Test nvwww.ridgetopgroup.com www.qstar.be Q-Star Test nv
Power Monitoring ResultsGood Power SystemGood Power System Degraded Power SystemDegraded Power System
Both supplies provide regulated voltage, but one is degraded and will soon fail.
Performance Performance
End‐of‐LifeEnd‐of‐Life
Degraded VR Threshold
www.ridgetopgroup.com www.qstar.be Q-Star Test nv
Condition: Near to Failure
Thresholds set by degradation FMEA:
• VR exceeds predefined Spec
• VR as good as new
Power Supply is 91% degraded but still regulating output voltage
DATE CONFERENCE | 8 MARCH 2010 | Tutorial E1 Q-Star Test nv
Contact Information
Phil DaviesDirector, Prognostic DivisionOffice: [email protected]
Hans ManhaeveCEO, Q-Star TestOffice: +32 50 [email protected]
Ridgetop Group
6595 N. Oracle Rd.Tucson, AZ 85704