Vehicle state estimation method based on adaptive total variation denoising filtering
US12087105B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2023 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Sep 26, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle state estimation method based on adaptive total variation denoising (TVD) filtering includes the following steps: step 1: collection and preprocessing of an original signal of a vehicle; step 2: noise level evaluation, step 3: Teager-Kaiser energy evaluation; step 4: optimization problem construction; and step 5: application of a filtered signal in the step 4 in the estimation of a vehicle state. The vehicle state estimation method is mainly based on the global noise level characteristic and the local intensity change characteristic of the vehicle system state data, and adaptive filtering of parameters is achieved by means of a TVD filtering method. The signal is denoised to the maximum extent, peak information of the signal is retained while the data smoothness is maintained, and then the signal is used for vehicle state estimation, working condition identification and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.