Program, offset component derivation device, and offset component derivation method
JP2026019672APending Publication Date: 2026-02-05ASAHI KASEI MICRODEVICES CORP
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Patent Information
- Application Number
- JP2024121395
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2026-02-05
AI Technical Summary
Technical Problem
Existing methods struggle to accurately estimate the offset component of angular velocity in moving vehicles, especially when the vehicle is in motion and in environments with unstable geomagnetic fields, such as indoors.
Method used
A program and device that utilize a search unit to identify times when magnetic fields coincide within a reference range, integrating angular velocity data to derive rotation matrices and eigenvectors, and adjust offset components based on these values to accurately estimate the vehicle's attitude.
Benefits of technology
Enables precise adjustment of offset components in moving vehicles, even in unstable magnetic environments, ensuring accurate attitude estimation without requiring the vehicle to stop.
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Abstract
To provide a program, an offset component derivation device, and an offset component derivation method for estimating an offset component while a moving body is operating.SOLUTION: Searching for a plurality of sets each indicating two times at which two magnetic fields, among a plurality of magnetic fields indicated by magnetic field data from a magnetic sensor provided in a moving body, have been measured, the two magnetic fields having a degree of coincidence satisfying a reference range; The program may cause the computer to function as an integral value derivation unit that derives an integral value by integrating each angular velocity measured between the two times indicated in angular velocity data from an angular velocity sensor provided in the moving object, and an offset component derivation unit that derives an offset component included in the angular velocity data on the basis of the integral value of each of the plurality of sets.SELECTED DRAWING: Figure 1
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