METHOD FOR AUTOMATED CONTROL OF ASYNCHRONOUS ELECTRIC DRIVE OF MOVEMENT WITH CORRECTION OF TRANSVERSE DISPLACEMENT Russian patent published in 2016 - IPC B66C9/00 

FIELD: machine building.

SUBSTANCE: invention can be used in mechanisms of moving bridge cranes with a separate electric drive of asynchronous motors of the crane supports. Method for automated control of an asynchronous electric drive of movement with correction of transverse displacement involves using bypass relay-vector systems to control the speed of asynchronous motors of the crane supports with correction of the transverse displacement on the basis of two contactless sensors (17, 18) measuring the distance from preset points of the crane to rails (19, 20) on opposite supports. Signals of sensors D₁ and D₂ are used for analysis of the crane position basing on calculating differential value Δ₁₂=D₁-D₂ making it possible to uniquely identify the crane transverse displacement relative to the crane runway. On the basis of the above specified differential value formed is correction signal U_k1/U_k2, which is subtracted from speed setting signal U_SS1/U_SS2 of electric motor M₁/M₂ respectively in the external speed circuit of the relay-vector system of the supports asynchronous motors control. Thus, provided is alignment and elimination of the crane transverse displacement in order to rule out a contact between flanges of the crane wheels and the rails.

EFFECT: provided is correction of transverse displacement of a bridge crane with high speed and accuracy, increased service life of the crane running gear, higher efficiency of the equipment use, reduced costs for its maintenance and repair, higher efficiency of the mechanism due to reduction of power consumption.

1 cl, 2 dwg, 1 tbl