{
  "$type": "site.standard.document",
  "description": "A blended brake system includes a regenerative (regen) brake system and a friction brake system that cooperatively decelerate a motor vehicle. A method of operating the blended brake system includes a vehicle controller receiving a brake command with a corresponding brake torque request. From this…",
  "path": "/patents/1379941",
  "publishedAt": "2026-03-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L7/26",
    "GM GLOBAL TECHNOLOGY OPERATIONS LLC"
  ],
  "textContent": "A blended brake system includes a regenerative (regen) brake system and a friction brake system that cooperatively decelerate a motor vehicle. A method of operating the blended brake system includes a vehicle controller receiving a brake command with a corresponding brake torque request. From this brake torque request, the controller determines a regen brake torque for the regen brake system and a friction brake torque for the friction brake system. The controller uses the friction brake torque and an estimated temperature of a rotating friction brake element to determine a temperature-dependent friction coefficient, and uses the friction brake torque and an estimated burnish state of the friction brake system to determine a burnish-dependent friction coefficient. A modified friction brake torque is calculated from a modified brake pressure coefficient derived from the temperature-dependent and burnish-dependent friction coefficients. The friction brake system applies the modified friction brake torque to slow/stop the vehicle.",
  "title": "BLENDED VEHICLE BRAKE SYSTEMS AND CONTROL LOGIC WITH FRICTION BRAKE BURNISH LEARNING AND COMPENSATION"
}