Estimation device, estimation method, and program
AssigneeNidec Corporation
InventorHiroyuki KAWAKAMI
Life of this patent
Estimating the term…
Abstract
An estimation device that estimates a state of a device that detects a position of a rotating body includes a position sensor to output a detection signal that is a signal representing a detection result of a position of a magnet rotatable in conjunction with the rotating body according to a magnetic flux of the magnet, an extractor to extract a feature amount of the detection signal from the detection signal for each of the positions, and an estimator to derive an evaluation value representing a comparison result between a feature amount of the detection signal for each of the positions and a reference value for each of the positions, and to estimate a degree of change in sensitivity to detect the position based on the evaluation value.
Claims9
1-8. (canceled)
An estimation device that estimates a state of a device that detects a position of a rotating body, the estimation device comprising:
- a position sensor to output a detection signal that is a signal representing a detection result of a position of a magnet rotatable in conjunction with the rotating body according to a magnetic flux of the magnet;
- an extractor to extract a feature amount of the detection signal from the detection signal for each of the positions;
- and
- an estimator to derive an evaluation value representing a comparison result between a feature amount of the detection signal for each of the positions and a reference value for each of the positions, and to estimate a degree of change in sensitivity to detect the position based on the evaluation value.
An estimation method executed by an estimation device that estimates a state of a device that detects a position of a rotating body, the estimation method comprising:
- outputting a detection signal that is a signal representing a detection result of a position of a magnet rotatable in conjunction with the rotating body according to a magnetic flux of the magnet;
- extracting a feature amount of the detection signal from the detection signal for each of the positions;
- and
- deriving an evaluation value representing a comparison result between a feature amount of the detection signal for each of the positions and a reference value for each of the positions, and estimating a degree of change in sensitivity to detect the position based on the evaluation value.
Dependencies are inferred from the claim text.