Fault Isolation in Conventional Linear SystemsߞA Feasibility Study

A procedure for generating a set of tests for a conventional linear system making use of gain measurements from normal input to normal output terminals is described. Basically, the procedure is to compute the corner frequencies of the nominal network and choose, as test frequencies, several frequencies in the neighborhood of each corner frequency, and hence, detect shifts in the corner frequencies. Interpretations of measured values are obtained by precomputing the gain at these frequencies for parameter deviations from their nominal values. The theoretical basis of the procedure is also discussed. An example is worked out in detail to demonstrate the feasibility of the procedure.