Automatic control of the pull-up drive of the remote feed system of the mining combine

Purpose. Automatic synchronization of the angles of rotation of the traction drive and the pull-up drive of the remote feed system (RFS) of the mining combine. This goal is achieved by automatically controlling the speed of the pull-up drive. Methodology. Due to the complexity, nonlinearity and high order of the mathematical model of the automatic control system (ACS) of the combine with RFS, the synthesis and study of the ACS of the combine with RFS with two automatically controlled drives was performed on a simulation Simulink model in the MATLAB system. The simulation model is hybrid because a function written in C++ and pre-compiled is used to calculate the loads on the executive bodies of the combine. Results. The synthesis of the system for synchronizing the rotation angles of drives and research on the ACS model of a combine with RFS with two controlled drives in the automatic mode of the combine operation was performed. The maximum difference in the angles of rotation of the drives does not exceed 0.022 rad. Moreover, the traction drive in terms of the rotation angle is ahead of the rotation angle of the pull-up drive by the specified value. This ensures the absence of elastic force in the idle branches of the chain circuit, increases the controllability of the traction drive when stabilizing the load on the combine's executive bodies, reduces the energy consumption of the RFS drives and wear of the traction chain. Scientific novelty. A new structure of the ACS for a mining combine with RFS with two automatically controlled drives is proposed. Practical significance. Automatic control of the pull-up drive using a synchronization system ensures the absence of elastic forces in the idle branches of the chain circuit, increases the controllability of the traction drive when stabilizing the load on the combine's executive bodies, reduces the energy consumption of the VSP drives and wear of the traction chain. Keywords: automatic control system, mining combine, remote feed system, drives, synchronization