履带行走式液压支架立柱动态特性分析  

Dynamic Characteristic Analysis of Column System on Crawler Walking Hydraulic Support

作　　者：李强[1,2] 潘德文[3] LI Qiang;PAN De-wen(School of Mechanical and Electronic Engineering,Suzhou University, Suzhou 234000,China;Innovation and Application Center of 3D printing,Suzhou University, Suzhou 234000,China;College of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]宿州学院机械与电子工程学院,安徽宿州234000 [2]宿州学院3D打印应用创新中心,安徽宿州234000 [3]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《控制工程》2019年第1期73-79,共7页Control Engineering of China

基　　金：安徽省高等学校省级教学研究项目(2016jyxm1031;2016jyxm1032);安徽省自然科学基金面上项目(1708085ME104);安徽省高校自然科学研究重点项目(KJ2017A439);宿州学院重点科研项目(2017yzd09)

摘　　要：为探究履带行走式液压支架对顶板的支护效果及稳定性,以立柱液压系统为研究对象,提出了基于改进PID控制算法的控制策略,利用AMESim软件,对升柱过程、降柱过程及冲击载荷下的立柱液压系统特性进行了仿真分析,得到了升柱过程、降柱过程及冲击载荷下立柱各缸压力、安全阀的压力及流量动态响应曲线;基于仿真分析结果,提出了通过优化控制器、调整安全阀的弹簧刚度等来提高系统稳定性的措施。加积分分离法的改进PID控制策略能较好地处理失控问题,避免出现积分饱和,实现平稳启动、迅速提升、平缓接触的效果;安全阀的弹簧刚度由300 N/mm调整为400 N/mm后,能减弱液压冲击,提高系统的稳定性。To explore the supporting effect and stability of the crawler walking hydraulic support,taking the hydraulic system of column as the research object,this paper puts forward the control strategy based on improved PID control algorithm,and uses the AMESim software to analyse the process of column rise,fall and under the shock loading.We have acquired the oil cylinder and safety valve’s dynamic response curve;based on the results,we put forward a series of measures to improve the system stability by optimizing the controller and adjusting the spring stiffness of the safety valve.The results show that the improved PID control strategy added integral separation can be better to deal with the control problem,avoid integral saturation,and achieve the effect of smoother start,quicker lifting and gentler contact.The spring stiffness can be adjusted from 300 N/mm to 400 N/mm,the hydraulic impaction can be abated and the system stability can be improved.

关 键 词：液压支架 履带行走 立柱 动态特性 

分 类 号：TD355.4[矿业工程—矿井建设]