Patent ID: 6920413

Claim:
A characteristic value identification method comprising: a first process to prepare a government equation representing a functional model of a product part and having, at an input and an output on each side, a pair of a potential quantity and a flow quantity values, respectively, representing a strength and a quantity of energy applied to the product part; a second process to convert the functional model into a steady functional model in a steady state by eliminating terms of a transient internal characteristic value in the government equation to identify a steady internal characteristic value of the government equation; and a third process to identify the transient internal characteristic value in the government equation by using the steady internal characteristic value, wherein the third process includes: a first step for preparing a transient test model to determine at least one transient internal characteristic value in the transient state of the government equation; a second step for collecting transient test data by performing a test corresponding to the transient test model; a third step for applying the steady internal characteristic value to the internal characteristic value of the transient test model to generate transient phenomenon reproduction data; and a fourth step for correcting the transient phenomenon reproduction data based on an error between the transient phenomenon reproduction data and the transient test data, thereby identifying the transient internal characteristic value, wherein when the error does not lie within an allowable range the fourth step repeatedly corrects a predetermined transient internal characteristic value within the transient phenomenon reproduction data until the error lies within the allowable range, and determines the transient internal characteristic value to be identified when the error lies within the allowable range.