Golf gear fitting system, golf gear fitting method, golf gear fitting program, golf swing classification method, golf shaft fitting system, golf shaft fitting method, and golf shaft fitting program

Abstract

A golf gear fitting system (2) includes a swing data acquisition unit (21) to acquire swing data from a sensor (11) installed in a golf club (1), a swing data storage unit (22) to store the swing data acquired by the swing data acquisition unit (21), a data classification unit (23) to classify the swing data stored in the swing data storage unit (22), and a data prediction unit (24) to predict swing data of specifications not measured by the sensor (11) by referring to the swing data classified in the data classification unit (23).

1 : A golf gear fitting system, comprising:
 a swing data acquisition unit to acquire swing data from a sensor installed in a plurality of golf clubs with different specifications;   a swing data storage unit to store the swing data acquired by the swing data acquisition unit;   a data classification unit to classify the swing data stored in the swing data storage unit; and   a data prediction unit to predict swing data of a golf club with specifications unmeasured by the sensor by referring to the swing data classified in the data classification unit.   
     
     
         2 : The golf gear fitting system according to  claim 1 , further comprising:
 a swing response surface computation unit to compute a swing response surface by a response surface methodology using the swing data predicted by the data prediction unit;   a time response surface computation unit to compute a time response surface by a response surface methodology using the swing data predicted by the data prediction unit; and   a simulation execution unit to compute swing data of a golf club with specifications unmeasured by the sensor by using the swing response surface and time response surface, and to perform simulation on the swing of a golf club based on the computed swing data.   
     
     
         3 : The golf gear fitting system according to  claim 2 , wherein the simulation execution unit computes the head behavior at impact using the finite element method and the swing data predicted by the data prediction unit. 
     
     
         4 : The golf gear fitting system according to  claim 2 , further comprising a results output unit to output the results of a simulation executed by the simulation execution unit. 
     
     
         5 : The golf gear fitting system according to  claim 4 , wherein the results output unit converts into a natural language the results of the simulation executed by the simulation execution unit, and outputs the language accordingly. 
     
     
         6 : The golf gear fitting system according to  claim 2 , wherein the difference in the degree of impact is set within a predetermined level among the specifications of a plurality of golf clubs used for the simulation. 
     
     
         7 : The golf gear fitting system according to  claim 1 , wherein the data classification unit classifies the swing data stored in the swing data storage unit by using an unsupervised learning method. 
     
     
         8 : The golf gear fitting system according to  claim 7 , wherein the data classification unit classifies the swing data stored in the swing data storage unit by using a self-organizing map as an unsupervised learning method. 
     
     
         9 : The golf gear fitting system according to  claim 1 , wherein the swing data storage unit stores difference data, which are the difference between the swing data of a specific golf club and the swing data of another golf club, for each of the plurality of players; and
 when the swing data of the specific golf club are newly acquired by the swing data acquisition unit, the data prediction unit reads out from the swing data storage unit the difference data of swing data that belong to the same classification of the newly acquired swing data, and predicts swing data of the other golf club using the readout difference data.   
     
     
         10 : The golf gear fitting system according to  claim 1 , wherein the swing data acquisition unit measures the head behavior of the golf club,
 the data classification unit determines which group the head behavior acquired by the swing data acquisition unit belongs to among a plurality of groups classified in advance, and   the data prediction unit predicts the most suitable specifications of the golf club based on the group determined by the data classification unit.   
     
     
         11 : The golf gear fitting system according to  claim 1 , wherein the sensor is a six-axial sensor to detect acceleration in triaxial directions and angular velocity in triaxial directions. 
     
     
         12 : The golf gear fitting system according to  claim 1 , wherein the sensor is a nine-axial sensor to detect acceleration in triaxial directions, angular velocity in triaxial directions, and orientation in triaxial directions. 
     
     
         13 : The golf gear fitting system according to  claim 1 , wherein the sensor is formed to include a six-axial sensor to detect acceleration in triaxial directions and angular velocity in triaxial directions and a geo-magnetometer to detect orientation in triaxial directions. 
     
     
         14 : The golf gear fitting system according to  claim 1 , wherein the sensor is attached to the grip of the golf club. 
     
     
         15 : The golf gear fitting system according to  claim 1 , wherein the swing data storage unit is a database that stores swing data of a plurality of players. 
     
     
         16 : The golf gear fitting system according to  claim 1 , wherein the plurality of golf clubs with different specifications are selected based on an L4 orthogonal array specified by experimental design. 
     
     
         17 : A golf gear fitting method, comprising:
 acquiring swing data from a sensor installed on a plurality of golf clubs with different specifications;   storing in a swing data storage unit the swing data acquired by the swing data acquisition step;   classifying the swing data stored in the swing data storage unit; and   predicting swing data of a golf club with specifications unmeasured by the sensor by referring to the swing data classified in the data classification step.   
     
     
         18 : A golf gear fitting program to be executed by a computer, comprising:
 a swing data acquisition process for acquiring swing data from a sensor installed on a plurality of golf clubs with different specifications;   a swing data storing process for storing in a swing data storage unit the swing data acquired by the swing data acquisition process;   a data classification process for classifying the swing data stored in the swing data storage unit; and   a data prediction process for predicting swing data of a golf club with specifications unmeasured by the sensor by referring to the swing data classified in the data classification process.   
     
     
         19 : A golf swing classification method for classifying swing data, comprising classifying swine data with a self-organizing map when swing data are acquired from a sensor installed on a golf club. 
     
     
         20 : A golf shaft fitting system comprising the golf gear fitting system according to  claim 1 . 
     
     
         21 : A golf shaft fitting method, comprising employing the golf gear fitting method according to  claim 17 . 
     
     
         22 : A golf shaft fitting program comprising the golf gear fitting program according to  claim 18 .