{
  "$type": "site.standard.document",
  "description": "A control system is disclosed in which an error signal (e), i.e. the difference between a required value (R) and a feedback value (F), is used to select a gain value (k) for use in a controller (4). Then the error signal (e) is multiplied by a selected gain signal (k). In order to reduce noise, the…",
  "path": "/patents/1083941",
  "publishedAt": "2004-09-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02C9/00",
    "ROLLS ROYCE PLC [GB]"
  ],
  "textContent": "A control system is disclosed in which an error signal (e), i.e. the difference between a required value (R) and a feedback value (F), is used to select a gain value (k) for use in a controller (4). Then the error signal (e) is multiplied by a selected gain signal (k). In order to reduce noise, the error signal (e) is filtered before being fed to a gain selection means. Additionally a disturbance compensation means comprising a lookup table and driven by another parameter of the controlled system is used to produce a compensated error signal (e') for selecting the gain. This is achieved by multiplying the error signal (e) is by a value read from the lookup table, depending on the value of the other parameter, for example temperature.",
  "title": "Improving stability and response of control systems"
}