开式泵控锻造油压机流量压力复合位置控制研究

中国机械工程

开式泵控锻造油压机流量压力复合位置控制研究

艾超1,2;刘艳娇2;宋豫2;孔祥东1,2

1.先进锻压成形技术与科学教育部重点实验室(燕山大学)，秦皇岛，066004
2.燕山大学河北省重型机械流体动力传输与控制实验室，秦皇岛，066004

出版日期:2016-07-10 发布日期:2016-07-12
基金资助:
国家自然科学基金资助项目(51405423)；河北省自然科学基金资助重点项目(E2016203264)；河北省高等学校科学技术研究青年基金资助项目(QN20132017)；燕山大学青年教师自主研究计划课题(13LGB005)

Research on Flow Pressure Compound Position Control of Open Circuit Hydraulic Pump-controlled Forging Press System

Ai Chao1,2;Liu Yanjiao2;Song Yu2;Kong Xiangdong1,2

1.Key Laboratory of advanced forging technology and Science (Yanshan University),Ministry of Education,Qinhuangdao,Hebei,066004
2.Yanshan University Hebei Heavy Machinery Fluid Power Transmission and Control Laboratory,Qinhuangdao,Hebei,066004

Online:2016-07-10 Published:2016-07-12
Supported by:

摘要/Abstract

摘要： 针对开式泵控锻造油压机在压下过程中管路结构所带来的快锻滞后等问题，建立了机组主泵、主缸以及管路结构数学模型，推导了机组压下特性传递函数。以数学模型为基础，提出了基于流量压力复合控制的前馈补偿控制方法，实现了机组压下阶段空载位置控制以及带载压力补偿位置控制，即机组压下特性的综合控制。以0.6MN锻造油压机实验平台为基础展开仿真与实验研究，结果表明：所提出的控制方法对解决开式泵控锻造油压机液压系统快锻带载时压力上升慢、压下量不足等问题具有良好效果。

关键词: 开式泵控系统, 液压管路, 流量压力复合控制, 前馈补偿控制

Abstract: Aiming at the problems such as fast forging lag by the pipe lines of open circuit hydraulic pump-controlled forging press system, the mathematical models of main pump, master cylinder and pipe line were developed for the response lag under the forging processes, and the corresponding transfer functions were derived. On the basis of mathematical models, the feed-forward compensation control was proposed based on flow and pressure compound control. The system could achieve position control at no load and pressure compensation position control at on load, therefore the system controlled the pressure characteristics comprehensively. Based on 0.6MN hydraulic forging press experimental platform, the simulation and experiments show that the method brings a good effect on the problems such as slow rise of pressure and insufficient degree of forging of the open circuit hydraulic pump-controlled forging press system at on load.

Key words: open circuit pump-controlled system, hydraulic pipeline, flow pressure compound control, feed-forward compensation control

中图分类号:

TH137

艾超, 刘艳娇, 宋豫, 孔祥东, . 开式泵控锻造油压机流量压力复合位置控制研究[J]. 中国机械工程.

Ai Chao, Liu Yanjiao, Song Yu, Kong Xiangdong, . Research on Flow Pressure Compound Position Control of Open Circuit Hydraulic Pump-controlled Forging Press System[J]. China Mechanical Engineering.

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