Алгоритм генерации эффективных воздействий на схему для тестирования электронного средства
The urgency of test generation problem is founded to increase the efficiency of monitoring and diagnosing electronic means. As part of the information system of diagnostic modeling implementation, the algorithm of test forming, that provides analysis of the circuitry in the static mode, as well as in the frequency and time domains, is considered. In the static mode operation is considered to explore the «input/output» characteristic, where there are different testing algorithms for linear and nonlinear plots. In frequency domain, according to the algorithm of test forming, the zeros and poles of transfer function are calculated. After that the most effective frequencies of test signals are chosen between zeros and poles. In dynamic domain, according to the appropriate algorithm, the operation form and operation characteristic of circuitry are chosen. Then permissible parameters of electronic components are analyzed. The selection method of effective test impact is proposed according to the uniqueness criterion of distinguishing detectable defects. The diagnostic modeling is carried out, wherein the output characteristics at the circuit output or at internal nodes are analyzed under the test impact and to the degree of defects differentiation within measurement error is determined.