振动干扰下大负载DJ型架桥机机臂升降液压稳态控制  

Hydraulic Steady State Control of Heavy Load DJ Bridge ErectingMachine Arm Lifting under Vibration Interference

作　　者：邵志元 SHAO Zhiyuan(The 4th EngineeringCo.,Ltd.,China Railway 12th Bureau Group,Xi'an 710021,China)

机构地区：[1]中铁十二局集团第四工程有限公司,陕西西安710021

出　　处：《机械制造与自动化》2025年第1期251-255,共5页Machine Building & Automation

基　　金：陕西慧衡建设工程有限公司项目(91610113MAB0WNK44B)。

摘　　要：为了提升大负载DJ型架桥机机臂升降液压控制效率和稳定性,提出大负载DJ型架桥机机臂升降液压稳态控制技术。等效分析DJ型架桥机机臂升降结构的振动特性。基于等效模型获得机臂升降结构的固有频率和相应振型,避免传统方法整体振动分析的弊端。基于振动特性分析结果自适应调节PID液压控制器,使其更好地适应机臂的振动干扰,实现机臂升降液压稳态控制。实验结果表明:应用该技术控制后的响应曲线变得平稳且具有较小的幅值输出,当出现外界扰动时,能够快速恢复到原始稳定状态,平均控制时间为2.91 s,具有较好的机臂升降液压稳态控制效率和稳定性。In order to improve the efficiency and stability of hydraulic control for the lifting and lowering of the arm of the heavy load DJ bridge erecting machine,a steady-state hydraulic control technology for the lifting and lowering of the arm of the heavy load DJ bridge erecting machine is proposed.Equivalent analysis is conducted on the vibration characteristics of the lifting structure of the DJ type bridge erecting machine arm.The natural frequency and corresponding vibration mode of the boom lifting structure is abtained based on an equivalent model avoiding the drawbacks of traditional methods for overall vibration analysis.Based on the analysis of vibration characteristics,the PID hydraulic controller is adaptively adjusted,better adapting to the vibration interference of the arm and achieving stable hydraulic control of arm lifting.The experimental results show that the response curve controlled by the proposed technology becomes stable and has a small amplitude output.When external disturbances occur,it can quickly recover to the original stable state with an average control time of 2.91 seconds,which has good hydraulic steady-state control efficiency and stability for arm lifting.

关 键 词：大负载DJ型架桥机 机臂升降结构 动力学等效函数 模态分析 PID模糊控制器 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]