Method for reducing the hysteresis error and the high frequency noise error of capacitive tactile sensors
US11680863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Mar 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for reducing hysteresis error and high frequency noise error of capacitive tactile sensors includes the following steps: step 1: calibration, specifically including positive stroke calibration to form n positive stroke curves and negative stroke calibration to form n negative stroke curves; step 2: averaging, specifically including positive stroke averaging to form an average positive stroke curve, negative stroke averaging to form an average negative stroke curve, and comprehensive averaging to form a comprehensive stroke curve; step 3: fitting modeling, to obtain a positive stroke fitting function, a negative stroke fitting function, and a comprehensive fitting function; step 4: measurement; step 5: noise filtering; step 6: stroke direction discrimination; and step 7: resolving, to obtain the force at the current time by using a corresponding fitting function based on the stroke direction discrimination result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.