Methods and apparatus for performing hill hold with reduced oscillations in vehicle position
US12420645B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | May 17, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for hill hold in an electric vehicle are disclosed. In one embodiment, a system includes a motor and a controller operable in a hill hold control mode. The motor is coupled to one or more wheels of a vehicle. In the hill hold control mode, the controller controls the motor to generate a holding torque to maintain a vehicle speed at zero. The holding torque prevents a change in vehicle position. The holding torque opposes changes in the road grade, the shaft stiffness, or the vehicle weight to prevent oscillations in the vehicle position. The controller uses at least one of road grade, shaft stiffness, and vehicle weight to control the motor to generate the holding torque. The hill hold control mode operates across a range of vehicle weights, a range of shaft stiffnesses, and a range of road grades, without additional tuning of the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.