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US 2023/0417790 A1Published application
Inertial measurement unit
AssigneeSeiko Epson Corporation
InventorsFumikazu Otani, Taketo Chino
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Abstract
An inertial measurement unit includes an angular velocity sensor and an acceleration sensor that output inertial information, a storage portion that stores a plurality of correction parameters related to a range of values of the inertial information, a parameter control portion that selects a selection correction parameter from the plurality of correction parameters, and a correction calculation portion that corrects the inertial information using the selection correction parameter.
Claims4
An inertial measurement unit comprising:
- an inertial sensor that outputs inertial information;
- a signal processing portion sampling the inertial information at a predetermined sampling interval and converting the inertial information into inertial information data having a digital value;
- a storage unit that stores a plurality of correction parameters related to nonlinear correction coefficients that are errors with respect to the linearity of the inertial information data;
- a parameter control portion that selects a selection correction parameter from the plurality of correction parameters based on the inertial information data output from the signal processing unit;
- and
- a correction calculation portion that corrects the inertial information using the selection correction parameter.
3 more elements
Dependencies are inferred from the claim text.