Systems and methods for calculating motor position, inertia and rest position in sensorless brushed DC motor control systems, and for determining seat occupant weight based on motor current
US11463030B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2021 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Apr 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/09
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system includes a motor control module and an occupant weight classification module. The motor control module is configured to supply power to a motor to move a seat in a first direction from a first position to a second position when the seat is unoccupied and supply power to the motor to move the seat in a second direction from a third position to a fourth position when an occupant is in the seat. The occupant weight classification module is configured to measure a first frequency of ripples in current supplied to the motor as the seat is moved from the first position to the second position, measure a second frequency of ripples in the current supplied to the motor as the seat is moved from the third position to the fourth position, and determine a weight of the occupant based on the first and second frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.