{
  "$type": "site.standard.document",
  "description": "A control system and method measures vibrations during operation of an engine connected with rotating accessories. A high vibration condition is identified responsive to a vibration amplitude exceeding a threshold and a vibration frequency being in a frequency band extending around an operating…",
  "path": "/patents/965128",
  "publishedAt": "2026-05-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02C7/32",
    "BOEING CO [US]"
  ],
  "textContent": "A control system and method measures vibrations during operation of an engine connected with rotating accessories. A high vibration condition is identified responsive to a vibration amplitude exceeding a threshold and a vibration frequency being in a frequency band extending around an operating frequency of one rotating accessory. The system and method decide whether operating frequencies of the rotating accessories are within a crosstalk band from each other and, if so, the system and method shift the operating frequency of another rotating accessory to determine which rotating accessory is causing the vibrations.",
  "title": "ENGINE ACCESSORY CONTROL SYSTEM AND METHOD FOR MITIGATING ERRONEOUS ACCESSORY DISCONNECT WITH SPEED SHIFT"
}