A simple and efficient method for diagnosing equipment faults based on quantitative physical knowledge

摘要

This paper proposes a method for identifying and locating the origin of a fault of a piece of equipment using approximate linear quantitative equations of variable increments which are derived from equations representing the steady state of the equipment and measured values of the variables. The proposed method differs fundamentally from strict numerical simulation methods and qualitative methods. Although the solution which is obtained by the proposed method is approximate, it is devised so that errors which are contained in them can be reduced. The proposed method, because only linear equations are dealt with, has the advantage of being easy to implement and process and of taking much less computation time.