Method of detecting a change in the direction of rotation of a rotatable shaft
US10982755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2017 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Jan 3, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/443
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of detecting a change in the direction of rotation of a rotatable shaft (5) based on non-direction sensitive rotational speed data, the method comprising the steps: ●determining a speed (17) of a rotatable shaft (5) of a vehicle transmission (3) based on non-direction sensitive speed data received from a non-direction sensitive rotational speed sensor (7), wherein the speed (17) of the rotatable shaft (5) is the absolute value of the rotational speed of the rotatable shaft (5); ●determining, based on the speed (17) of the rotatable shaft (5), if the duration of a first continuous time interval (20) during which the speed (17) of the rotatable shaft (5) is continually smaller than a first predetermined speed value (18) is shorter than a predetermined duration (24); and ●detecting that a change in the direction of rotation of the rotatable shaft (5) has occurred during the first continuous time interval (20) if the duration of the first continuous time interval (20) is shorter than the predetermined duration (24). The invention further relates to a controller (8) for carrying out the method and to a driveline (100; 200) including the controller (8). …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.