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液压支架液压系统的建模与仿真
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摘要
随着煤炭行业的不断发展,高产高效的综采设备不断进步,液压支架作为主要的综采设备,对其性能提出了更高的要求。为了研究和开发更高性能的液压支架,单纯运用传统的设计方法需要进行各种性能试验,周期长、成本高,变更参数或条件困难,有时甚至无法实现。本文以某型液压支架液压系统为对象,研究液压支架的动态特性,并对系统的压力损失进行了计算。
     论文利用AMESim软件对液压支架液压系统进行了建模。AMESim软件是一种比较直观的、图形化的建模软件,它按照数学方程式建立多个领域的图形化元件库,使建模方式更为方便。论文以Visual Basic软件为辅助工具,制作了液压支架液压系统的人机交互界面,并编写了Visual Basic和AMESim的接口程序,实现了Visual Basic和AMESim的联合仿真。
     论文通过对建立的液压支架液压系统的液压模型进行仿真,研究了乳化液泵站、立柱控制回路及推移控制回路等主要回路的动态特性;此外,还以阻尼孔代替液压支架液压系统中换向阀的方法对系统模型进行了简化处理,然后进行仿真分析,利用仿真结果对液压支架液压系统中的压力损失进行了计算。
     本文通过人机交互界面控制的方式对液压支架液压系统进行控制,使得操作更为方便;通过变更参数的方法对系统进行了仿真分析,研究了影响液压支架液压系统动态特性的主要因素,为新型液压支架的研究与设计,以及提高液压支架的性能提供了理论依据。
With the continuous development of coal industry, high yield and high efficiency compound mining equipment progress quickly. As the main compound mining equipment, hydraulic support puts forward higher requirement for its performance. If we make various performance tests with the traditional design method, cycle is long, the cost is high, changing parameters or conditions is very difficult. Sometimes, it even can not be achieved. This article based on one type of hydraulic support's hydraulic system, studies some of the dynamic characteristics of hydraulic support, and has calculated the pressure loss of liquid.
     This thesis models the hydraulic system of hydraulic support, using the software of AMESim. AMESim is stark and graphical in modeling. According to the mathematical equations to create multiple areas of graphical component libraries, making modeling method more convenient. This thesis’auxiliary tool is Visual Basic, using it we make the man-machine interface of hydraulic support's hydraulic system, and write the interface program of Visual Basic and AMESim, in the last, realizes the joint simulation of Visual Basic and AMESim.
     Based on the hydraulic support's hydraulic system establishment of hydraulic model, we make the simulation, and study the dynamic characteristic of Emulsion pump, pillar control circuit and goes control circuits, which are the main loops. in addition, using the way of damping hole in instead of hydraulic support directional control valve in hydraulic system, the system model is simplified. And then analysis the Simulation, using the simulation results, we calculate the pressure loss of hydraulic support's hydraulic system.
     This article makes the aim of controlling hydraulic support's hydraulic system by the way of making machine interface control, and makes the operation more convenient. We analysis the simulation system through the way of changing parameters, get the main factors of influence hydraulic support's hydraulic system dynamic. It provides theory basis for new hydraulic support's research and design, improving hydraulic support's performance.
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