METHOD FOR OBTAINING OPERATING POINT OF SYSTEM WITH NONLINEAR ELEMENT CHARACTERISTICS APPROXIMATED INTO DIVIDED POLYGONAL LINE BY ELECTRONIC COMPUTER, PROGRAM FOR THE SAME, STORAGE MEDIUM STORING THE PROGRAM, AND SIMULATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method and the like which can rapidly and surely converge an operating point of a nonlinear system with nonlinear element characteristics approximated into divided polygonal line.;SOLUTION: The method includes an operation section specifying process which specifies a nonlinear element operation section to which a solution x⁽ⁿ⁾ belongs, a process which calculates a slope and an intercept of a straight line of the nonlinear element and obtains the solution x⁽ⁿ⁾ based on a formula into which an equation expressing a nonlinear system through the slope and the intercept is linearized, and a process which decides that the solution x⁽ⁿ⁾ is a solution to be obtained when the nonlinear element operation section to which the solution x⁽ⁿ⁾ belongs and an operation section to which a solution x^(n-1) belongs coincide with each other. In the operation section specifying process, a first operation section to which the solution x⁽ⁿ⁾ belongs when an X axis is a reference and a second operation section to which the solution x⁽ⁿ⁾ belongs when a Y axis is a reference are obtained respectively, and the first or the second operation section closer to the operation section to which the solution x^(n-1) belongs is specified as the nonlinear element operation section.;COPYRIGHT: (C)2011,JPO&INPIT