[1]陈光伟,丁强,花军,等.多层压机热压过程液压伺服控制原理及系统设计[J].林业工程学报,2018,3(03):117-121.[doi:10.13360/j.Issn.2096-1359.2018.03.019]
 CHEN Guangwei,DING Qiang,HUA Jun,et al.Principle analysis and structural design of the hydraulic servo control system for multilayer press[J].Journal of Forestry Engineering,2018,3(03):117-121.[doi:10.13360/j.Issn.2096-1359.2018.03.019]
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多层压机热压过程液压伺服控制原理及系统设计()
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《林业工程学报》[ISSN:1001-8081/CN:32-1160/S]

卷:
3
期数:
2018年03期
页码:
117-121
栏目:
装备与信息化
出版日期:
2018-05-15

文章信息/Info

Title:
Principle analysis and structural design of the hydraulic servo control system for multilayer press
文章编号:
2096-1359(2018)03-0117-05
作者:
陈光伟丁强花军李艳娜
东北林业大学机电工程学院,哈尔滨 150040
Author(s):
CHEN Guangwei DING Qiang HUA Jun LI Yanna
College of Mechanical Electrical Engineering, Northeast Forestry University, Harbin 150040, China
关键词:
多层压机 液压伺服系统 位移控制 液压回路 结构设计
Keywords:
multilayer press hydraulic servo system displacement control hydraulic circuit structural design
分类号:
TH137.7
DOI:
10.13360/j.Issn.2096-1359.2018.03.019
文献标志码:
A
摘要:
针对多层热压机压制板坯过程中液压缸出现的运动速度不同步、热压板闭合位置存在偏差等问题,指明了其成因主要在于压机的液压系统缺乏对液压缸输入流量的控制能力。结合人造板热压工艺在不同阶段对压机液压缸运动状态的要求,提出了以液压伺服控制为基础对多层压机液压系统进行性能改进的思路,设计了以三通伺服阀控制非对称液压缸为执行机构、热压板位移为目标参数的多层压机阀控缸闭环液压控制系统,阐述了该系统以热压板位移作为反馈量、由伺服阀控制液压缸运动状态进而对热压板运动位置予以控制的原理,有效提高了多层压机热压板的闭合位置精度。进一步结合三通伺服阀控制非对称液压缸的结构,分析了该执行机构达成多层压机油缸位移控制的过程与原理,并结合多层压机对液压系统总体功能的要求,设计了多层压机热压过程液压伺服系统的回路结构,对该回路的组成及功能进行了说明。该回路可同时满足多层压机快速闭合阶段的油缸运动速度要求和板坯热压阶段的热压板位置精度要求,提高了多层压机的整体性能。
Abstract:
In the working process of the multilayer press, there can be some problems such as the unsynchronized motion of the hydraulic cylinders and position deviation between different hot press plates at the closed position. The main reason is that the hydraulic system of the multilayer press can't control the input flow of the hydraulic cylinder. According to the requirements on hydraulic cylinder motion at different stages of wood-based panel pressing process, improving the performance of the multilayer press hydraulic system based on the hydraulic servo control is proposed, and the closed loop hydraulic servo control system on the main cylinder of multilayer press is designed in this study. The actuator in the system is based on non-symmetrical hydraulic cylinder with three-way valve, and the target parameter is the displacement of the hot platen. This system takes the displacement of the platens as feedback signal, and controls the movement state of the hydraulic cylinders. Furthermore, combined with the structure of the non-symmetrical hydraulic cylinder with three-way valve, the working process and the operating principle of the displacement control system is analyzed. According to the main function requirements on the hydraulic system of the multilayer press, the circuit structure of the hydraulic servo system used in the hot pressing process is designed, and the composition and function of this system is introduced. This circuit meets the demand for both the quick movement of the hydraulic cylinders and the position accuracy of the hydraulic cylinder in the hot pressing stage. The overall performance of the multilayer press hydraulic system is effectively improved.

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备注/Memo

备注/Memo:
收稿日期:2017-10-15 修回日期:2018-01-17
基金项目:国家林业局林业科技推广项目(2016-34); 哈尔滨市科技创新人才计划项目(2014RFXXJ020)。
作者简介:陈光伟,男,副教授,研究方向为木工机械设计制造及其自动化。E-mail:chengw730245@sina.com
更新日期/Last Update: 2018-05-15