| 摘要 |
vibration diagnosis of objects working under conditions of vibrations. SUBSTANCE: vibration diagnosis of parameters of object under test are obtained in form of vibration signal (displacement, speed, acceleration, etc. ) in time field. Characteristics of state space and phase space of vibration signal and its integral and differential components are used as characteristics being analyzed; change in them shows present state of object. Proposed method is based on use of phase space characteristics of equipment; type and degree of damage may be determined by type and kind of these characteristics (their quantitative and qualitative change). Then, bifurcation points are determined; these points define boundaries between qualitatively different states of object. Prediction of development of defect and estimation of state of system under test are effected rate of change of quantitative parameters and by rate of passage of bifurcation points. EFFECT: enhanced reliability of diagnosis due to determination of parameters of technical state by relative conformity of diagnosis features with these parameters. 3 cl, 3 dwg |
