System and method for validating velocities of torque generating devices in a vehicle
US7406366B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2003 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Oct 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/915
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for validating engine and motor velocities in a vehicle having an engine and two motors is provided. The method validates the velocities without using two speed sensors for each device. The velocities of the engine and the two motors are first determined, and then mathematically combined using known velocity relationships based on the vehicle architecture. The mathematical combination of the velocities is then compared to a first pre-determined speed range, and if the mathematical combination is within the predetermined range, the velocities of the engine and the two motors are validated. If the validation of the engine and the two motors fails, additional equations can be used utilizing additional inputs, including the vehicle speed as measured at the vehicle wheels. In this way, the velocities of one or more of the torque generating devices in the vehicle may be validated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.