Engine model construction method, engine model constructing apparatus, and computer-readable recording medium

A non-transitory computer-readable recording medium storing therein an engine model construction program that causes a computer to execute a process comprising:

• generating test patterns in which a plurality of manipulated variables used for an engine test are changed with time;
• correcting the test patterns based on first coverage of a first space of manipulated variables are allowed to take and second coverage of a second space of change rate values of the manipulated variables are allowed to take;
• acquiring pieces of time series data of operation amounts of the manipulated variables and controlled amounts with respect to the manipulated variables by performing an engine test using the corrected test patterns;
• and
• constructing a first engine model by performing machine learning on training data in which the corrected test patterns are adopted as input and the pieces of time series data are adopted as correct answers.

An engine model constructing apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• generate test patterns in which a plurality of manipulated variables used for an engine test are changed with time,
• correct the test patterns based on first coverage of a first space of manipulated variables are allowed to take and second coverage of a second space of change rate values of the manipulated variables are allowed to take,
• acquire pieces of time series data of operation amounts of the manipulated variables and controlled amounts with respect to the manipulated variables by performing an engine test using the corrected test patterns, and
• construct a first engine model by performing machine learning on training data in which the corrected test patterns are adopted as input and the pieces of time series data are adopted as correct answers.