THE ASSESSMENT OF POWER CHANGES IN MOTOR PARAMETERS IN CASE OF EMERGENCIES IN THE MECHANICAL PART OF BELT CONVEYOR

Abstract

The paper reveals the nature of the dynamic interaction among mechanical and electric parameters of the drive when arising in mechanical part of conveyor of the sudden damages. The estimation of the possibility to use the behavior of the system of electric parameters of electric motor as a diagnosing signal is given. The joint model was formed to study the dynamic processes in the system “supplying network – anisochronous engine – belt conveyor”. The supplying network and anisochronous engine are described by the model of problem space of the fourth order with the reception on withdrawal of the moment value on the electric motor shaft. The certain moments of inertias and softness of the relationships between sections have been defi ned for the mechanical part of the belt conveyor. Using the way of the gradual separation element since the minimum moment of the inertias and sharing the moment of the inertias of these elements and softness between the nearby elements, a 3-h mass system has been received. It simulates the mechanical part of the experimental unit. The formed dynamic model was solved in ambience of Matlab Simulinc. The article also presents the received data on energy factors of the drive in dynamic processes, following the emergencies in mechanisms.