Fault diagnosis for linear systems via multifrequency measurements

Efficient Fault Analysis in Linear Analog Circuits.

“…1 he problem of independent neasurc rmn ts I s discussed in some det a il by Sen and Saeks [ t i] - [8], who unfortunately s top short of describin g exactly how to choose the measure ments and frequencies.…”

“…In evaluating (21) it is useful to first find the (q-I) The right side of (22) In this section we discuss the evaluation of they-param-If atty of the subscripts of ( fl in the last expression is eter matrix , y~ given by (8). in the faulted network , the zero, (lie term is zero.…”

“…Continuing the example , define the transfer functions and parameters of the problem of independent measurements [6] - [8] , but admi t that no theory yet exists for choosing measurements while taking numerical -23-…”

“…nodes i and f in the unfaulted nctwoik. Finally, the Parameter changes are accounted for in (8) by a change remaining rows of R 22 contain all zcios~ except that the in the l )< /t branch adniitt~snce matrix )-~,. in order to first row to the right of the diagonal is unity.…”

Automatic parametric fault detection in complex analog systems based on a method of minimum node selection

“…The optimization of the input signal is also performed: in the time (Golonek et al, 2008) and the frequency domain (Sen and Saeks, 1979;Grzechca et al, 2007). Grasso et al (2007) used the simulated annealing algorithm in optimizing multitonal signal selection.…”