{
  "$type": "site.standard.document",
  "description": "Provided is a motor control device that can reduce an error component resulting from braking or the like to bring an estimated motor speed closer to an actual motor speed, thereby improving the accuracy of control of a motor. The motor control device includes a controller that outputs a first…",
  "path": "/patents/1345780",
  "publishedAt": "2023-06-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02P21/05",
    "HITACHI ASTEMO, LTD."
  ],
  "textContent": "Provided is a motor control device that can reduce an error component resulting from braking or the like to bring an estimated motor speed closer to an actual motor speed, thereby improving the accuracy of control of a motor. The motor control device includes a controller that outputs a first torque instruction signal that is an instruction to specify a torque of an electric motor , and a damping control unit . The damping control unit includes a first high-pass filter that receives input of a motor speed signal indicating a speed of the electric motor , the first high-pass filter outputting a first signal, a second high-pass filter that receives input of an estimated motor speed signal obtained from the first torque instruction signal, the second high-pass filter outputting a second signal, and a low-pass filter that receives input of a motor speed deviation signal indicating a deviation between the first signal and the second signal, the low-pass filter obtaining a low-frequency component from the motor speed deviation signal and outputting the low-frequency component as a third signal.",
  "title": "MOTOR CONTROL DEVICE AND MOTOR CONTROLLING METHOD"
}