METHOD OF SEARCHING FOR FAULTY UNIT IN DYNAMIC SYSTEM Russian patent published in 2011 - IPC G05B23/02 

FIELD: physics.

SUBSTANCE: reaction of a good system f_jnom(t) j=1,2,…,k is recorded on the interval t∈[0, T_K] in k control points; integral estimations of output signals F_jnom(α), j=1, …,k of the system are determined, estimates of output signals F_jnom(α), j=1, …,k obtained from integration are recorded, integral transforms of dynamic characteristics of the model are determined for each of the k control points obtained from sample deviation of parameters of each of m units, deformations of integral transforms of model dynamic characteristics are determined, the system is replaced with nominal characteristics of the controlled system, an analogue test signal x(t) is transmitted to the input of the system, integral transforms of dynamic characteristics of the controlled system for k control points F_j(α), j=1,…, k for parameter α are determined, deviation of integral transforms of dynamic characteristics of the controlled system for k control points from nominal values ΔF_j(α)=F_j(α)-F_jnom(α), j=1,…,k, is determined, normalised deviation values of integral transforms of dynamic characteristics of the controlled system are determined, diagnostic features are determined, and a faulty unit is determined by the minimum diagnostic feature.

EFFECT: reduced hardware and time expenses on diagnosis.

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