Work support system, work support method, and storage medium

A work support method to be executed by a computer system including a storage device configured to store a manufacturing direction database storing a manufacturing direction parameter generated in product manufacturing, a direction achievement database storing manufacturing achievement data of a manufacturing process performed in accordance with the manufacturing direction parameter, an alarm level database defining alarm information to be given to a worker on a manufacturing line depending on the size of a deviation between manufacturing direction and the manufacturing achievement, and a multiple regression analysis program to execute a multiple regression analysis, the method comprising:

• processing to read a group of manufacturing direction parameters and the manufacturing achievement data corresponding to the group of manufacturing direction parameters from the manufacturing direction database and the direction achievement database, to calculate a deviation between a given target value indicated by the group of manufacturing direction parameters and a given achievement value indicated by the manufacturing achievement data, and to store the group of manufacturing direction parameters and the deviation into a deviation factor database in the storage device;
• processing to calculate risk rates of all parameters included in the group of manufacturing direction parameters and calculate an average value of the calculated risk rates of the parameters in accordance with the multiple regression analysis program using the group of manufacturing direction parameters in the deviation factor database as explanatory variables and using the deviation as an objective variable, and to specify a manufacturing direction parameter having the risk rate equal to or below the average value as a selection candidate;
• processing to calculate a multiple correlation coefficient, the number of parameters, and the number of samples for each of the group of manufacturing direction parameters and the manufacturing direction parameter of the selection candidate, to calculate an explanatory variable selection reference value, in accordance with the multiple regression analysis program, based on the multiple correlation coefficient, the number of parameters, and the number of samples thus calculated, to specify, as optimum parameters, one of the group of manufacturing direction parameters and the manufacturing direction parameter of the selection candidate that has the largest explanatory variable selection reference value, and to store information on the optimum parameters in the deviation factor database in association with the specified manufacturing direction parameters;
• processing to check parameters included in a manufacturing direction newly stored in the manufacturing direction database against the deviation factor database, when the parameters of the new manufacturing direction match the manufacturing direction parameters associated with the information on the optimum parameters in the deviation factor database, to extract information on the deviation associated with the group of the matched manufacturing direction parameters in the deviation factor database, to check the information on the deviation against the alarm level database to specify alarm information corresponding to the deviation, and to store the alarm information in the storage device in association with the new manufacturing direction;
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• processing to receive designation information for a manufacturing direction through an input device, to read the manufacturing direction corresponding to the designation information from the manufacturing direction database, to read output data associated with a work procedure indicated by the group of parameters in the manufacturing direction, from the storage device based on information on the work procedure, to read the alarm information stored for the manufacturing direction from the storage device, and to perform any of an operation of replacing all or part of the output data with the alarm information and outputting the resultant data to the output device and an operation of outputting the alarm information to the output device together with the output data.

A storage medium storing therein a program executable by a computer system including a storage device configured to store a manufacturing direction database storing a manufacturing direction parameter generated in product manufacturing, a direction achievement database storing manufacturing achievement data of a manufacturing process performed in accordance with the manufacturing direction parameter, an alarm level database defining alarm information to be given to a worker on a manufacturing line depending on the size of a deviation between manufacturing direction and the manufacturing achievement, and a multiple regression analysis program to execute a multiple regression analysis, the program causing the computer system to execute:

• processing to read a group of manufacturing direction parameters and the manufacturing achievement data corresponding to the group of manufacturing direction parameters from the manufacturing direction database and the direction achievement database, to calculate a deviation between a given target value indicated by the group of manufacturing direction parameters and a given achievement value indicated by the manufacturing achievement data, and to store the group of manufacturing direction parameters and the deviation into a deviation factor database in the storage device;
• processing to calculate risk rates of all parameters included in the group of manufacturing direction parameters and calculate an average value of the calculated risk rates of the parameters in accordance with the multiple regression analysis program using the group of manufacturing direction parameters in the deviation factor database as explanatory variables and using the deviation as an objective variable, and to specify a manufacturing direction parameter having the risk rate equal to or below the average value as a selection candidate;
• processing to calculate a multiple correlation coefficient, the number of parameters, and the number of samples for each of the group of manufacturing direction parameters and the manufacturing direction parameter of the selection candidate, to calculate an explanatory variable selection reference value, in accordance with the multiple regression analysis program, based on the multiple correlation coefficient, the number of parameters, and the number of samples thus calculated, to specify, as optimum parameters, one of the group of manufacturing direction parameters and the manufacturing direction parameter of the selection candidate that has the largest explanatory variable selection reference value, and to store information on the optimum parameters in the deviation factor database in association with the specified manufacturing direction parameters;
• processing to check parameters included in a manufacturing direction newly stored in the manufacturing direction database against the deviation factor database, when the parameters of the new manufacturing direction match the manufacturing direction parameters associated with the information on the optimum parameters in the deviation factor database, to extract information on the deviation associated with the group of the matched manufacturing direction parameters in the deviation factor database, to check the information on the deviation against the alarm level database to specify alarm information corresponding to the deviation, and to store the alarm information in the storage device in association with the new manufacturing direction;
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• processing to receive designation information for a manufacturing direction through an input device, to read the manufacturing direction corresponding to the designation information from the manufacturing direction database, to read output data associated with a work procedure indicated by the group of parameters in the manufacturing direction, from the storage device based on information on the work procedure, to read the alarm information stored for the manufacturing direction from the storage device, and to perform any of an operation of replacing all or part of the output data with the alarm information and outputting the resultant data to the output device and an operation of outputting the alarm information to the output device together with the output data.