| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for calculating a UEP around a hull in which the UEP at an arbitrary position can be estimated and calculated simply in a short time without determining an electrode arrangement and a current value of the hull, and regardless of skill and experience of an engineer. <P>SOLUTION: The UEP around the hull is measured by a UEP sensor and a relative position between the hull center and the UEP sensor is measured (ST 1) to input measurement data (ST 2). A degree nn and order mm in an expansion method for various kinds of harmonic functions are set (ST 3), and a position function in a calculation expression is calculated based on measurement data on the relative position between the hull center and the UEP sensor (ST 4). A determinant of a least-square method is prepared (ST 5), and an expansion coefficient D<SB POS="POST">t</SB>is calculated by solving this determinant (ST 6). An estimation surface or an estimation line is set (ST 7), the position function in a set point j is calculated (ST 8), and the UEP in the set point j is calculated (ST 9). <P>COPYRIGHT: (C)2012,JPO&INPIT |
