{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreib3r4vtglrihxrhs3hvzhem6ytcmjwlkbn6u7alfkk4biri5t6sxu"
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  "description": "A turning drive control unit configured to control driving of the rotation mechanism of a construction machine driven to turn by an electric motor includes a drive command generation part configured to generate a drive command driving the electric motor based on the amount of operation input via…",
  "path": "/patents/1015752",
  "publishedAt": "2011-02-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K25/04",
    "SUMITOMO SHI CONSTR MACH CO [JP]"
  ],
  "textContent": "A turning drive control unit configured to control driving of the rotation mechanism of a construction machine driven to turn by an electric motor includes a drive command generation part configured to generate a drive command driving the electric motor based on the amount of operation input via the operation part of the construction machine; a rotation speed detection part configured to detect the rotation speed of the electric motor; and a drive command generation part configured to generate a drive command driving the electric motor based on a speed command output from the speed command generation part and the rotation speed detected by the rotation speed detection part. At a time immediately before a rotation stop of the electric motor, the braking torque of the electric motor is limited.",
  "title": "SWING DRIVE CONTROLLER AND CONSTRUCTION MACHINE INCLUDING THE SAME"
}