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HIGH SPEED RECORDER FOR A GAS TURBINE ENGINE

  • US 20160348532A1
  • Filed: 05/31/2016
  • Published: 12/01/2016
  • Est. Priority Date: 06/01/2015
  • Status: Active Grant
First Claim
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1. A method of monitoring a high speed rotary machine, the high speed rotary machine having a control system including a controller and a high speed recorder, the method comprising:

  • the controller sampling sensors connected to the high speed rotary machine on a predetermined sensor sampling interval and monitoring the high speed rotary machine for trigger events;

    the controller logging an array of sensor values obtained from the sensors and the occurrence of each trigger event including an event timestamp of when the trigger event occurred;

    the controller updating a map on a predetermined map publishing interval, the map being updated to include the trigger events that have occurred within the last timeframe of the map publishing interval and a map header that is changed each time the map is updated;

    the high speed recorder reading the values obtained for each sensor from the controller on a predetermined sensor reading interval and checking the map header for a change to the map header on a predetermined map reading interval, the high speed recorder setting a flag when the map header has changed, and the high speed recorder reading the map during the next loop of the map reading interval, the map reading interval being shorter than the map publishing interval; and

    the control system assigning all timestamps on the same temporal axis by assigning a sensor timestamp to each sensor value on the same temporal axis as the event timestamps assigned by the controller.

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