Filtering method for the detection of the transitions of a power steering signal
US10286947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Jun 9, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0463
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention concerns a method for detecting a transition (4′) in a noisy signal, which involves submitting a noisy signal (δSignal) carrying an item of information used for managing the power steering, said method comprising a derivation sub-step (a1), which involves evaluating the time derivative of the noisy signal (δSignal/δt), following by a selective filtering sub-step (a2) which involves comparing said time derivative of the noisy signal (δSignal/δt) with a predefined variation threshold (Spic) in order to detect the appearance of a derivative peak (7), greater than said variation threshold (Spic), evaluating the holding time (dpic) of said derivative peak, during which the time derivative of the noisy signal (δSignal/δt) is held above said variation threshold (Spic), and checking if said peak holding time (Spic) reaches or exceeds a predefined minimum time threshold (d0).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.