Component fault detection
AssigneeXerox Corporation
InventorsRussell J. Sokac, Jose I. Quinones
Life of this patent
Estimating the term…
Abstract
A technique that uses component data, such as servo encoder feedback data, and calculates real time histograms on a production printed wire board assembly (PWBA). If the histograms are uploaded to a main controller at specific intervals during run, aberrant servo activity can be tracked over a period of time. This could lead to finding machine problems before they become serious enough to cause shutdowns.
Claims32
An intermittent aberrant component activity tracking method comprising:
- continuously monitoring a component;
- sensing a characteristic of the component;
- performing real time statistical calculations using sensed values of the characteristic of the component;
- and
- storing, in a memory, data including results of the calculations indicative of a fault.
An aberrant machine component events history providing method comprising:
- communicating data about machine operation to service personnel;
- and
- alerting service personnel, when a threshold of events is reached, that a failure is imminent.
A fault detection apparatus comprising:
- means for continuously monitoring a component characteristic;
- means for performing real time statistical calculations;
- and
- means for storing, in a memory, results of the calculations indicative of a fault.
A real time encoder frequency excursion recording method that can record excursions in real time on a PWBA in an operating environment, the method comprising:
- continuously monitoring the encoder timing;
- doing real time statistical calculations;
- and
- storing the results of the calculations indicative of a fault in a memory for retrieval by service personnel or for uploading to the main controller at regular intervals during the run process.
Dependencies are inferred from the claim text.