Development of synchronous control system of coal mine drilling pressure relief test bench
In order to solve the problems of the mechanism of coal mine drilling pressure relief experiment and the large synchronous control error in the process of biaxial system movement,a biaxial control test bench for underground drilling research was developed,and a synchronous control strategy combining fuzzy sliding mode and cross-coupling control was proposed.Firstly,a simplified model of the system is established according to the structure and movement characteristics of the drilling test stand,and the mathematical model and asynchronous error of the biaxial feed system are analyzed.Then a fuzzy sliding mode adaptive cross-coupling controller is designed.The single-axis adopts fuzzy sliding mode control,and the synchronization mode between the double-screws adopts fuzzy adaptive PID cross-coupling control.At the same time,a dual-axis motor control system based on LabVIEW is established.Finally,the simulation results show that the fuzzy sliding mode cross-coupling control has a synchronous speed error of less than 5 r/min compared with the ordinary cross-coupling control,which improves the synchronous control performance of the system.
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