{
  "$type": "site.standard.document",
  "description": "A longitudinal acceleration calculation unit includes a low-pass filter (LPF), a high-pass filter (HPF), and an addition unit. The LPF is configured to acquire a first longitudinal acceleration of a vehicle detected by a longitudinal acceleration sensor, and remove a high-frequency component of the…",
  "path": "/patents/1387411",
  "publishedAt": "2026-06-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G17/0182",
    "HITACHI ASTEMO, LTD."
  ],
  "textContent": "A longitudinal acceleration calculation unit includes a low-pass filter (LPF), a high-pass filter (HPF), and an addition unit. The LPF is configured to acquire a first longitudinal acceleration of a vehicle detected by a longitudinal acceleration sensor, and remove a high-frequency component of the first longitudinal acceleration. The HPF is configured to acquire a second longitudinal acceleration of the vehicle estimated based on an engine torque of the vehicle and a brake hydraulic pressure of the vehicle, and remove a low-frequency component of the second longitudinal acceleration. The addition unit is configured to obtain a composed longitudinal acceleration of the vehicle based on a post-high-frequency-component-removal longitudinal acceleration obtained by removing the high-frequency component by the LPF and a post-low-frequency-component-removal longitudinal acceleration obtained by removing the low-frequency component by the HPF.",
  "title": "Vehicle control device and vehicle control system"
}