{
  "$type": "site.standard.document",
  "description": "A vibrating structure gyroscope comprises a resonant structure arranged to vibrate under stimulation from a primary drive electrode. A drive system is arranged to vibrate the vibrating structure at a resonance frequency. An automatic gain control unit varies an amplitude of a primary drive signal…",
  "path": "/patents/1315753",
  "publishedAt": "2022-04-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C19/5712",
    "Atlantic Inertial Systems Limited"
  ],
  "textContent": "A vibrating structure gyroscope comprises a resonant structure arranged to vibrate under stimulation from a primary drive electrode. A drive system is arranged to vibrate the vibrating structure at a resonance frequency. An automatic gain control unit varies an amplitude of a primary drive signal (P). A controller operates the gyroscope such that in a first mode of operation, the automatic gain control unit varies an amplitude of the drive signal (P) between an operating range defined by upper and lower bounds and in a second mode operation, in which the automatic gain control unit sets the amplitude of the drive signal (P) to a predetermined level outside of the operating range. In the second mode of operation an amplitude of a primary sense signal (P) is measured after a predetermined time period to determine an oscillation cycle count during said predetermined time period.",
  "title": "GYROSCOPE"
}