Elastic Torque Observer of a Two-Mass Electromechanical System

Abstract

To reduce the accident rate and increase the service life of electromechanical systems with shock load changes, the monitoring of elastic moments in mechanical gears is necessary. This task is relevant for the main lines of stands of hot rolling mills. The implementation of monitoring systems based on physical measuring devices is inefficient due to their complexity and low operational reliability. As an alternative, a relatively simple elastic moment observer is proposed, which is a fragment of an industrial controller software. The structure of the observer is presented and its advantages in comparison with known analogues are shown. The adequacy of the measured and reconstructed elastic moment signals is proved using the example of electromechanical systems of the stand of the thick-sheet mill 5000. A quasi-experimental analysis of emergency modes is substantiated, which allows the processing of signals stored in the form of data arrays. Based on this approach, an assessment of the dynamic moments in the emergency shutdown mode of the crate with metal in the rolls is given. The expediency of creating an online monitoring system for overloads of spindles and methods for calculating their resource is emphasized.