The analog controls a mode used for the most of mine hoist constant deceleration braking systems creates to some problems which has the poor stationary and serious deceleration overshoot during the process of emergency barking. Therefore, a fully digital control method with software and hardware redundant for constant deceleration braking systems is presented in this paper. The system adopts two sets of hydraulic control circuits, one of which is spare. In electrical control, two sets of PLC300 are chosen to realize software and hardware redundancy of control algorithm and two sets of PLC1200 are adopted to control electrohydraulic serve proportional valve to realize hardware redundancy of hydraulic control system. The hydraulic and electrical simulation models are established with the simulationX to improve algorithm and parameters of the controller. A prototype is manufactured and tested on site. The results show that the proposed scheme has good performance.
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赵瑞峰,黄家海,权龙,麻慧君,黎文勇.矿用提升机恒减速制动系统研制[J].机床与液压,2016,44(12):11-15. . Research of mine hoist constant deceleration braking system[J]. Machine Tool & Hydraulics,2016,44(12):11-15