Investigation of Possibility to Stabilize Load Current of Shearer’s Cutting Electric Drive

A new algorithm for adjusting PI controller coefficients in shearer operation control

“…With a sudden change in the coal resistance to cutting, in particular, at different levels of surges and their combinations, the response rate of the cutting current controller (transient process duration) and current steps also differ, and the settling time of the transient varies and depends on the parameters of the controller [15]. To improve the quality of the transient process, the parameters of the PI controller are to be selected to minimize the amplitudes of the current steps, and therefore reduce the amplitudes of the torque in the transmission of the cutting drive and minimize the system settling time (by reducing the duration of the peak torque in the transmission), including with respect to the PI controller in these conditions.…”

“…One of the common methods of mineral mining remains drilling and blasting, and its efficiency largely depends on the drilling equipment and tools in operation [4,15]. Yet, some operations require only the hammer blow (breaking of oversizes, chipping, etc.).…”