采煤机截割部加载试验台解耦控制

Decouple Research of Loading Test Bed For Cutting Part of Shearer

针对传统采煤机截割部加载试验台能耗大、结构复杂、技术要求高等问题,设计了一种基于二次调节技术的液压封闭式加载试验台。根据试验台的结构建立了数学模型。利用Matlab软件对系统的工作特性进行了仿真研究。仿真结果表明试验台驱动系统和加载系统的机械耦合会影响系统的控制精度。为了消除机械耦合对系统性能的影响需要进行解耦控制。根据系统模型求解解耦元件,并进行解耦仿真与试验研究。结果表明,加入解耦元件后机械耦合对系统的不利影响显著降低,解耦方法可行。

In accordance with these problems such as large energy consumption, complicated structure, high technical requirements in the traditional loading test bed for cutting part of shearer, this research designed a hydraulic closed loading test bed based on secondary regulation, and then established the mathematical model according to the structure of the test bed. The operation characteristic of the system was stimulated by Matlab. The Simulink simulation analysis and experiment results confirmed that the mechanical coupling couhl affect system performance. Therefore,this paper designed a decoupling controller to eliminate the influence of mechanical coupling for the system. The decoupling element was solved based on the system model,and then decoupling simulation and experimental test were conducted. The test results showed that, the mechanical coupling＇ s adverse impacts were reduced and the coupling controller could effectively guarantee the working performance of the system. The decoupling method is valid.