United States of America As Represented by the Administrator of Nasa

Curtis Ihlefeld

Jose M Perotti

Bradley M Burns

Angel Lucena

Karin E Bassignani

A solenoid health monitoring system uses a signal conditioner and controller assembly in one embodiment that includes analog circuitry and a DSP controller. The analog circuitry provides signal conditioning to the low-level raw signal coming from a signal acquisition assembly. Software running in a DSP analyzes the incoming data (recorded current signature) and determines the state of the solenoid whether it is energized, de-energized, or in a transitioning state. In one embodiment, the software identifies key features in the current signature during the transition phase and is able to determine the 'health' of the solenoid.

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Orlando, FL, United States of America

Curtis Ihlefeld