锻压机电液伺服阀死区补偿策略及控制特性分析  

Analysis of Dead Zone Compensation Strategy and Control Characteristics of Hydraulic Servo Valve of Forging Machine

作　　者：刘杰 Liu Jie(College of Intelligent Manufacturing,Shanxi Vocational University of Engineering and Science,Taiyuan Shanxi 030619,China)

机构地区：[1]山西工程科技职业大学智能制造学院,山西太原030619

出　　处：《山西冶金》2025年第1期86-87,90,共3页Shanxi Metallurgy

基　　金：山西省基础研究项目计划资助(20203021212308)。

摘　　要：为了进一步提高锻压机液压系统的运行稳定性,设计了一种锻压机电液伺服阀死区补偿策略,并开展控制特性分析。针对不同进、出口压差条件下电液伺服阀死区差异,对电液伺服阀死区进行补偿分析。研究结果表明:开展不同压差模拟测试,把参数输入液压油液压伺服阀内,将补偿算法加入中断程序,系统出现死循环,需进行中断触发。实施修正后,最大流量提升至15.3 L/min,死区比例缩小至3%,所提的补偿策略能够将电液伺服阀的死区降至3%,实现了对死区的有效补偿。该研究有助于完善锻压机的控制精度,为后续的冶金质量提高奠定一定的理论基础。In order to further improve the operating stability of hydraulic system of forging press,a dead zone compensation strategy of hydraulic servo valve of forging machine was designed and the control characteristics were analyzed.According to the difference of electro-hydraulic servo valve dead zone under different inlet and outlet pressure difference,the electro-hydraulic servo valve dead zone compensation is analyzed.The results show that when parameters are input into hydraulic oil servo valve and compensation algorithm is added to interrupt program,the system has a dead cycle and needs to trigger interrupt.After the correction,the maximum flow rate is increased to 15.3 L/min,and the proportion of dead zone is reduced to 3%.The proposed compensation strategy can reduce the dead zone of the electro-hydraulic servo valve to 3%,and achieve effective compensation for the dead zone.The research is helpful to improve the control accuracy of the forging press and lay a theoretical foundation for the subsequent improvement of metallurgical quality.

关 键 词：锻压机 电液伺服阀 死区补偿 压力反馈 控制特性 

分 类 号：TH137[机械工程—机械制造及自动化]