关键词: 矿用锚杆, 自动化生产线, 永磁直驱系统, 控制策略 

Abstract: In the automatic production line of mine anchor rod, the traditional anchor feeding system mostly transforms the rotary motion into linear motion through the intermediate transmission system (chain drive, gearbox, ball screw, etc.) with some problems, such as low efficiency,large noise, low control accuracy, large mechanical loss and large maintenance quantity, therefore the permanent magnet direct drive feed system is put forward. it generates direct thrust through the primary and secondary electromagnetic induction, eliminating the intermediate drive, and it has some advantages, such as compact structure,fast reaction speed, high control accuracy, small working noise, small maintenance amount and so on, the problems of high noise and high fault rate are solved. Due to the permanent magnetic direct drive system is susceptible to external perturbations and nonlinear effects, and is more sensitive to external perturbations, it brings some difficulty to the study of system control strategies.Therefore, this paper studies the control strategy of permanent magnetic direct drive system through theoretical analysis and simulation, the result show that the vector control system can obtain stable speed and thrust response, but large overregulation and thrust fluctuations; the variable structure control model has good tracking performance, with the advantages of fast response, no overregulation, robustness and small thrust fluctuation.