Modelling of the transmission system in conveying equipment based on Euler method with application
Modelling of the transmission system in conveying equipment based on Euler method with application
复制标题
基于欧拉法的输送设备传动系统建模及应用
DOI：
10.1177/1464419314534787
复制
发表时间：
2014-09-01
影响因子：
1.8
通讯作者：
Li, Guoping
中科院分区：
文献类型：
--
作者：
Nie, Rui;He, Baiyan;Li, Guoping
提出了一种预测和评价输送设备中传动系统在各种工况下动态特性的方法。为了解决质量和载荷变化的问题，根据物料分布和运动方式，将传动系统所处的空间划分为多个固定空间的有限控制体。每个体量被进一步离散成一系列的有限单元。将各单元的动力学方程与传动系统的拓扑结构进行组合，得到系统控制方程。利用Karnopp模型作为计算摩擦引起的负载阻力的基础。以某大型铠装工作面输送机为例，基于Matlab/Simulink开发了相应的仿真程序。仿真结果表明，空载启动和停止过程相对平稳，有利于保护系统部件，特别是链条。得到的链稳态速度、链载荷谱和最小张力可直接用于预测输送能力、评估链强度和优化预张力。
This paper presents an approach to predict and evaluate the dynamic characteristics of the transmission system in conveying equipment under various working conditions. To solve the problems of varying mass and load, the space, which the transmission system locates, is divided into multiple space-fixed finite control volumes according to the material distribution as well as motion pattern. Each volume is further discretized into a series of finite elements. System-governing equations are obtained by the assembly of all the individual elements’ dynamic equations and the topological structure of the transmission system. Karnopp model is utilized as the basis to render the duty resistance induced by friction. As an illustrative example, the present method is applied to model a large-scale armoured face conveyor, and the corresponding simulation code is developed based on Matlab/Simulink. Simulation results show that the start-up and stop processes with empty load are relatively smooth, which is beneficial to protect the components of the system, especially the chains. Furthermore, the resulted chain-steady velocity, chain-load spectrum and minimum tension force can be directly used to predict the conveying capacity, evaluate chain strength and optimise the pretension force.