Emergency stop speed profile for autonomous vehicles
US10983522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Dec 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to some embodiments, a system performs an emergency stop when a speed planning optimization fails to generate a speed curve. In one embodiment, in response to an emergency stop request, the system generates one or more path-time analytical curves, where each of the one or more path-time curves is represented by a polynomial function. The system selects one of the path-time analytical curves to determine whether the selected path-time analytical curve satisfies a set of evaluation criteria. If the selected path-time analytical curve does not satisfy the set of evaluation criteria, the system selects a next one of the path-time analytical curves for evaluation. If the selected path-time analytical curve satisfies the set of evaluation criteria, the system generates a trajectory based on the selected path-time analytical curve to control the ADV during an emergency stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.