METHOD CONTROLLING ELECTRIC DRIVES OF ACTUATING MECHANISMS OF METALLURGICAL MACHINES AND AGGREGATES Russian patent published in 2004 - IPC

FIELD: ferrous metallurgy, uninterrupted operation of metallurgical equipment. SUBSTANCE: method controlling electric drive includes control over parameters of power supply source and control circuits of electric drive, analysis of obtained results of control by comparison of controlled parameters with preset values. Control and analysis of parameters are carried out every 0.01 s or less. Then deviations of controlled parameters from preset values are brought out to light, information on exposed deviations and points of presence of deviations is transmitted to operator by graphic display on monitor. Assembly of serviceable control circuits of electric drive corrects thereafter causes of deviations during time of switching on of electric drive and removal of causes of deviations is indicated for operator by graphic display on monitor. If causes of deviations cannot be removed emergency situation is signaled with indication of object, point and time of failure. EFFECT: timely detection of failures, their removal, prevented emergency stoppage of actuating mechanism thanks to timely recognition of emergency situation. 3 cl