{
  "$type": "site.standard.document",
  "description": "A method 110 of deriving reciprocating device 12 component health includes receiving 114 a signal from a knock sensor coupled to a reciprocating device 12, deriving 118 total harmonic distortion (THD) at one or more frequencies, and determining 120 whether the derived THD exceeds a threshold value.",
  "path": "/patents/938939",
  "publishedAt": "2016-08-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B77/08",
    "GEN ELECTRIC [US]"
  ],
  "textContent": "A method 110 of deriving reciprocating device 12 component health includes receiving 114 a signal from a knock sensor coupled to a reciprocating device 12, deriving 118 total harmonic distortion (THD) at one or more frequencies, and determining 120 whether the derived THD exceeds a threshold value.",
  "title": "METHODS AND SYSTEMS TO DERIVE ENGINE COMPONENT HEALTH USING TOTAL HARMONIC DISTORTION IN A KNOCK SENSOR SIGNAL"
}