| CPC E02F 9/264 (2013.01) [E02F 9/2228 (2013.01); E02F 9/2235 (2013.01); E02F 9/2296 (2013.01)] | 18 Claims |
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1. A method executed by a computer, in a work machine including a predetermined portion, for calibrating a parameter to be used in calculating a position of the predetermined portion from a reference position in the work machine, the method comprising:
acquiring a true value of the position of the predetermined portion;
acquiring the reference position;
determining a plurality of correction candidate values of the parameter, the correction candidate values being used so that a calculation value of the position of the predetermined portion calculated based on the parameter from the reference position matches the true value;
calculating, for each of the plurality of correction candidate values, an assessment value indicative of a difference between the true value and the calculation value; and
determining a confirmation correction value of the parameter from among the plurality of correction candidate values based on the assessment value,
the plurality of correction candidate values including
a basic candidate value to be used so that the calculation value of the position of the predetermined portion calculated based on the parameter from the reference position matches the true value; and
a correction value determined in a vicinity of the basic correction value, the correction value determined in the vicinity of the basic correction value being a value in which the basic correction value is displaced by increasing or decreasing the basic correction value by a predetermined ratio or a predetermined amount.
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