| 摘要 |
PROBLEM TO BE SOLVED: To correct an effect, including an error, by the presence of a phenomenon such as zero point drift in which each measurement value, for example, a voltage value drifts between a static state before measurement (acceleration zero) and a static state after measurement (acceleration zero), due to the environment around a trajectory analysis device including an acceleration sensor or an angular velocity sensor, or hysteresis of the device.SOLUTION: A zero point drift value D that is a difference between a first zero point and a second zero point is calculated in an analysis unit 8, and an effect resulting from the zero point drift value D is corrected from position data in a moving state of a racket 50, which is measured in a position detection unit 2. Therefore, in the trajectory analysis device 30, position data can be accurately obtained while suppressing the effect (error) by zero point drift. |
