节点文献
采煤机自动调高系统机液联合仿真研究
Research on Co-simulation the Mechanical and Hydraulic System of Shearer’s Automatic Height-regulating System
【作者】 王丽；
【导师】 赵丽娟；
【作者基本信息】 辽宁工程技术大学 ， 机械电子工程， 2014， 硕士
【摘要】 调高系统是采煤机的重要组成部分,其性能直接影响采煤机的工作可靠性、生产能力和生产效率。随着采煤机市场竞争的日益激烈,对采煤机调高系统性能的要求也越来越高。调高系统是一个集机械、电气、液压于一体的复杂系统,多领域的联合仿真技术已成为其设计与研发过程中的关键技术。以某煤机公司研发的采煤机自动调高系统为研究对象,首先,利用Pro/E建立采煤机调高机械系统模型,通过接口MECHANISM/Pro将其导入到ADAMS中；将利用ANSYS生成的关键零件的模态中性文件导入到ADAMS刚体模型中,以形成调高机械系统刚柔耦合虚拟样机模型；利用MATLAB模拟实际工况下滚筒所受的瞬时负载,并施加给虚拟样机模型；对此刚柔耦合虚拟样机模型进行动力学仿真分析,结果表明此调高机械系统关键零件能够满足强度要求,设计合理。然后,在AMESim环境下建立调高液压系统模型,并通过接口模块与ADAMS机械系统模型进行耦合,通过机液联合仿真分析,表明该液压系统设计合理,能够满足调高要求。最后,建立自动调高电液比例位置控制系统数学模型,利用MATLAB/Simulink对其进行仿真,根据系统伯德图和阶跃响应曲线可知此系统能够满足自动控制系统稳定性、快速性和准确性的要求。本文的研究为今后采煤机自动调高系统的设计与优化提供了借鉴,对工程实际具有一定的指导作用。
【Abstract】 Height-regulating system is an important part of shearer, its performance has an direct effect on the work reliability, production capacity and production efficiency of shearer. With the increasing of competition in the market of shearer, the performance demands for shearer height-regulating system is becoming higher and higher.Height-regulating system is a complex system,which integrates machinery, electric and hydraumatic.It takes shearer’s automatic height-regulating system of a coal company as research project.Firstly,the model of height-regulating mechanical system is established in Pro/E,which is imported into ADAMS by using the MECHANISM/Pro interface.The modal neutral files of key components of height-regulating mechanical system are generated by ANSYS,which are imported into rigid body model in ADAMS,then a rigid-flex coupled virtual prototype model of height-regulating mechanical system is built.According to the actual working condition,the instantaneous loads of drum are simulated by Matlab,which are applied to the virtual prototype model.The dynamics simulation analysis is made,and the results show that the key parts of height-regulating mechanical system can meet the strength requirement, and the design is reasonable.Then,the model of height-regulating hydraulic system is built in AMESim,which is coupled with the mechanical system model built in ADAMS.By analyzing co-simulation the mechanical and hydraulic system, it shows that the design of hydraulic system is reasonable and can meet the requirement.Finally,it establishes the mathematical model of electro-hydraulic proportional position control system of automatic height-regulating system,which is simulated in MATLAB/Simulink. The Bode diagram and step response curve shows the system can meet the needs of automatic control system for stability, quickness and accuracy.This paper can provide lessons for the design and optimization of shearer automatic height-regulating system in the future,and it has certain guidance functions to engineering practice.