Design of closed-loop control system for hydraulic cylinder position of roadway support
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摘要: 针对煤矿巷道支护支架液压缸位置高精度控制和节能的需求，基于负载敏感原理设计了一种巷道支护支架液压缸位置闭环控制系统。分析了系统工作原理，建立了系统数学模型，利用AMESim软件搭建了系统仿真模型。仿真结果表明：负载敏感变量泵输出压力能稳定自适应最高负载压力变化，从而达到节能的目的；液压缸实际位移能快速、平稳地跟踪给定位移，液压缸位置控制精度在0.6 mm以内，满足煤矿巷道支护支架液压缸位置高精度控制需要。Abstract: For requirements of high precision control and energy saving of hydraulic cylinder position of support in coal mine roadway, a closed-loop control system for hydraulic cylinder position of roadway support was designed based on load sensing principle. Working principle of the system was analyzed, mathematical model of the system was established and simulation model of the system was built by use of AMESim software. The simulation results show that outlet pressure of load sensing variable pump can stably adapt to the maximum load pressure to realize energy saving, and actual hydraulic cylinder displacement can quickly and smoothly track given displacement within 0.6 mm error, which meet high precision control requirement of hydraulic cylinder position of support in coal mine roadway.
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Keywords:
- coal mine roadway /
- support /
- hydraulic cylinder position /
- closed-loop control /
- load sensing
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