Systems and methods for materials handling vehicle odometry calibration
US10458799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2018 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | May 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for calibrating odometry of a materials handling vehicle. One embodiment of a method includes determining a current location of the materials handling vehicle, determining an odometry distance from the current location to a destination based on a calculation of a determined number of rotations of a wheel and a circumference of the wheel, and determining a positioning system distance from the current location to the destination. Some embodiments include comparing the odometry distance with data from the positioning system distance to calculate a scaling factor, applying the scaling factor to a fast alpha filter to achieve a fast filter result, and applying the scaling factor to a slow alpha filter to achieve a slow filter result. Similarly, some embodiments include applying the fast alpha filter to the scaling factor to smooth noise, calculating an updated odometry distance utilizing the scaling factor, and utilizing the updated odometry distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.