Sensor output correction apparatus
US10767994B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 13, 2016 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | May 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P21/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor output correction system is provided which is capable of minimizing a risk that a correction value for use in zero-point correction differs from an actual deviation of a zero-point. An ECU includes a travel road information acquisition portion which obtains a curvature of a travel road on which a system-mounted vehicle is traveling and a vehicle information acquisition portion which obtains a detected value of a yaw rate sensor. The ECU determines whether the system-mounted vehicle is traveling on a straight path or not based on the curvature derived by the travel road information acquisition portion. The ECU determines a value (i.e., a zero-point equivalent value) which corresponds to a deviation of a current zero point of the yaw rate sensor based on detected values of the yaw rate sensor sampled while the system-mounted vehicle is moving on the straight path. The ECU determines a correction value which is subtracted from the detected value using the zero-point equivalent value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.