On the question of desired sensitivity assurance when testing linear systems by small number of test patterns

A testing procedure for a linear static system with known structure and unknown input signals is examined. Parameters of the system are defined as interval values. If the tolerance on this value is exceeded for a given parameter, the parameter is considered to be "faulty". Only parametric faults are tolerated in the system and a fault multiplicity is less than the total number of parameters. Increments are applied to the unknown input signals to estimate parameter deviations. It is shown how to choose these increments to decrease the "insensitivity" region and to ensure desired sensitivity to parameter deviations. For a small value of the fault multiplicity the number of test patterns/experiments is also small.