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JP-2026076033-A - Swing evaluation device, swing evaluation method, and computer program

JP2026076033AJP 2026076033 AJP2026076033 AJP 2026076033AJP-2026076033-A

Abstract

[Problem] To provide a device capable of evaluating the magnitude of kinetic energy during a swing. [Solution] This is a device for evaluating a swing. This device includes an acquisition unit that acquires motion values measured from the player's swing, an expansion unit that expands the motion values into first data showing the coordinated motion of the swing and second data showing the magnitude of the coordinated motion in time series for each of a plurality of modes, and a calculation unit that calculates third data D3 in which each of the magnitudes of the coordinated motion included in the second data is converted into mode energy, which is a physical quantity of the same dimension as the kinetic energy of the swing, for at least one of the plurality of modes. [Selection Diagram] Figure 12

Inventors

  • 岡崎 弘祐
  • 植田 尚良
  • 松本 賢太

Assignees

  • 住友ゴム工業株式会社
  • 公立大学法人 富山県立大学

Dates

Publication Date
20260511
Application Date
20241023

Claims (8)

  1. A device for evaluating a swing, An acquisition unit that acquires motion values by measuring the player's swing, From the aforementioned operating values, an expansion unit expands the data into first data showing the coordinated movement of the swing for each of the multiple modes, and second data showing the magnitude of the coordinated movement in time series. A calculation unit that calculates a third data in which each of the magnitudes of the coordinated motion included in the second data is converted into a mode energy, which is a physical quantity of the same dimension as the kinetic energy of the swing, in at least one of the multiple modes, is included. Swing evaluation device.
  2. The swing evaluation device according to claim 1, wherein the expansion unit expands the right singular vector as the first data and the left singular vector as the second data from the singular values, right singular vector, and left singular vector obtained by singular value decomposition of the operating value.
  3. The calculation unit obtains a fourth data obtained by differentiating the magnitude of the coordinated motion included in the second data with respect to time, and obtains a fifth data which shows the physical quantity related to the swing speed in a time series by multiplying the fourth data, the singular value, and the first data. The swing evaluation device according to claim 2, further comprising: a second calculation unit that calculates the third data by squaring the fifth data.
  4. The calculation unit obtains a fourth data obtained by differentiating the magnitude of the coordinated motion included in the second data with respect to time, and obtains a fifth data which shows the physical quantity related to the swing speed in a time series by multiplying the fourth data, the singular value, and the first data. The swing evaluation device according to claim 2, further comprising: a third calculation unit that calculates the third data by multiplying the fifth data by the transpose matrix of the fifth data.
  5. The calculation unit calculates the third data in at least two of the multiple modes, A total calculation unit calculates time-series data of the total mode energy obtained by adding up the mode energies included in the third data for each of the at least two modes, The swing evaluation device according to claim 1, further comprising a total display unit that displays the time-series data of the total mode energy.
  6. The calculation unit calculates the third data for all of the multiple modes, A comprehensive calculation output unit calculates time-series data of the total mode energy obtained by summing the mode energies included in the third data for each of the modes, A contribution calculation unit calculates time-series data of the contribution of each of the multiple modes to the total mode energy, The swing evaluation device according to claim 1, further comprising a contribution display unit that displays time-series data of the contribution for each of the aforementioned multiple modes.
  7. A method for evaluating a swing, Computers The process involves acquiring motion values by measuring the player's swing, From the aforementioned operating values, a process is performed to extract, for each of the multiple modes, first data showing the coordinated movement of the swing and second data showing the magnitude of the coordinated movement in time series. The process includes calculating a third data in which each of the magnitudes of the coordinated motion included in the second data is converted into a mode energy, which is a physical quantity of the same dimension as the kinetic energy of the swing, in at least one of the multiple modes. Swing evaluation methods.
  8. A computer program for evaluating a swing, Computers, A means of acquiring motion values that measure the player's swing, A means for extracting from the aforementioned operating values, for each of the multiple modes, first data showing the coordinated movement of the swing and second data showing the magnitude of the coordinated movement in time series, In at least one of the aforementioned multiple modes, the means for calculating a third data set is provided, which is obtained by converting each of the magnitudes of the coordinated motion included in the second data into a mode energy, which is a physical quantity of the same dimension as the kinetic energy of the swing. Computer program.

Description

This invention relates to a swing evaluation device, a swing evaluation method, and a computer program. Patent Document 1 below describes a swing evaluation device. This device includes an acquisition unit that acquires first motion values measuring the first swing, which is the golf swing of a first player, and an extraction unit that extracts first coordinated motion data showing the characteristic behavior of the first swing by singular value decomposition of the first motion values. Japanese Patent Publication No. 2024-79159 This is a diagram illustrating an example of a swing evaluation system including a swing evaluation device.This is a block diagram showing an example of a swing evaluation device.This flowchart shows an example of the processing procedure for a swing evaluation method.This diagram illustrates an example of positional data for various parts of a player's body and for various parts of a golf club.(a) is a diagram showing an example of a swing model based on the coordinated motion of the first mode, and (b) is a diagram showing an example of a swing model based on the coordinated motion of the second mode.(a) is a graph of the second data D2 showing the relationship between the magnitude of the cooperative operation in the first mode and the time, and (b) is a graph of the second data D2 showing the relationship between the magnitude of the cooperative operation in the second mode and the time.This is a flowchart showing an example of the processing steps for the calculation process.This flowchart shows an example of the processing procedure for the calculation step of another embodiment of the present invention.This is a diagram illustrating an example of a dyad product.(a) is a graph of the third data showing an example of the relationship between the mode energy of the first mode and time, and (b) is a graph of the third data showing an example of the relationship between the mode energy of the second mode and time.This graph shows an example of time-series data for total mode energy.This figure shows an example of time-series data of total mode energy displayed on a display device.This flowchart shows an example of the processing procedure for a swing evaluation method according to another embodiment of the present invention.This graph shows the time-series data of the contribution of each mode's mode energy.This figure shows an example of time-series data of contributions displayed on a display device for each of the multiple modes. The embodiments of the present invention will be described below with reference to the drawings. It should be understood that the drawings contain exaggerations and representations that differ from the actual structural dimensional ratios, in order to aid in understanding the content of the invention. Furthermore, the same or common elements are denoted by the same reference numerals throughout each embodiment, and redundant explanations are omitted. Moreover, the specific configurations shown in the embodiments and drawings are for the purpose of understanding the content of the present invention, and the present invention is not limited to the specific configurations shown in the illustrations. Figure 1 is a configuration diagram showing an example of a swing evaluation system 1 including a swing evaluation device 2. In this embodiment of the swing evaluation system 1 (swing evaluation device 2), the swing of player P is evaluated. The player P being evaluated may be one person or multiple people. Furthermore, while this embodiment exemplifies a golf swing, it is not limited to this configuration; for example, it may be a swing performed in other sports such as baseball or tennis. In this embodiment, when a golf swing is evaluated, a golf club 3 and a golf ball 4 are used. While the golf club 3 and golf ball 4 may be the same as those described in Patent Document 1, they are not particularly limited, and various types can be used depending on the purpose of evaluation, for example. Furthermore, when a baseball swing is evaluated, for example, a bat and baseball (not shown) are used, and when a tennis swing is evaluated, for example, a racket and tennis ball (not shown) are used. [Swing Evaluation System] The swing evaluation system 1 of this embodiment comprises a swing evaluation device 2 and a measuring device 5. The swing evaluation system 1 (swing evaluation device 2) is used to execute the swing evaluation method described later. [Measuring device] The measuring device 5 is for measuring the swing of player P. In this embodiment, the measuring device 5 is configured as a motion capture system 5A, but it is not particularly limited, and various devices capable of measuring a swing can be used. The measuring device 5 of this embodiment (in this example, the motion capture system 5A) includes multiple markers 6, multiple cameras 7, and a computer 8. Multiple markers 6 are attached to various parts of the player P's body (e.g., head, wrists, fingert