快锻系统压力位移复合控制节能研究

中国机械工程 ›› 2016, Vol. 27 ›› Issue (02): 265-272.

快锻系统压力位移复合控制节能研究

姚静1,2,3;曹晓明3;李彬3;孔祥东1,2,3;周芳3

1.河北省重型机械流体动力传输与控制实验室,秦皇岛,066004
2.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
3.燕山大学,秦皇岛,066004

出版日期:2016-01-25 发布日期:2016-12-15
基金资助:
国家自然科学基金资助项目(51575471)；河北省青年自然科学基金资助项目(E2014203247)；高档数控机床与基础制造装备科技重大专项(2011ZX04001-51-04)

Research on Energy Saving of Pressure and Displacement Compound Control Strategy for Fast Forging System

Yao Jing1,2,3;Cao Xiaoming3;Li Bin3;Kong Xiangdong1,2,3;Zhou Fang3

1.Hebei Province Key Laboratory of Heavy Machinery Fluid Power Transmission and Control,Qinhuangdao,Hebei,066004
2.Key Laboratory of Advanced Forging & Stamping Technology and Science,Ministry of Education of China,Qinhuangdao,Hebei,066004
3.Yanshan University, Qinhuangdao,Hebei,066004

Online:2016-01-25 Published:2016-12-15
Supported by:

摘要/Abstract

摘要：

针对锻造液压机普通电液比例阀控系统快锻工作过程中，系统定压输出、回程缸背压腔压力过大,系统传动效率低的问题，提出了一种基于压力位移复合的控制策略，在保证控制精度的前提下，同时进行了回程缸背压腔压力控制和泵口压力负载敏感控制。通过建立液压机压力位移复合控制的整体数学模型，对其节能机理进行了研究，并分析了影响其节能效果的两个重要因素——回程缸背压腔压力pb和泵口与工作腔压力差值Δp。实验结果表明，基于压力位移复合控制的液压机快锻系统加载时系统位置误差达到1.5mm，与传统的电液比例阀控系统相比，装机功率降低至传统电液比例阀控系统装机功率的52.3%，功耗也降低为普通比例阀控系统的49.2%。

关键词: 复合控制, 快锻, 液压机, 节能

Abstract:

According to the problems of constant pressure output,return cylinder's large pressure and low transmission efficiency in fast forging process of forging hydraulic press's ordinary electro-hydraulic proportional valve system,this paper proposed a pressure and displacement compound control strategy, and took pressure control for the return cylinder's back-pressure cavity and load sensitive control for the pump's inlet pressure under the premise of ensuring the control precision.The energy-saving mechanism was studied and the two important factors-the return cylinder's back-pressure cavity pressure pb and the pressure difference Δp between pump outlet and the working cavity - that influenced the effect inveness of energy saving were analyzed through establishing the complete mathematical model for hydraulic press's pressure and displacement compound control. Experimental results show that the position error for loading can limit 1.5mm based on the fast forging hydraulic press's pressure and displacement compound control system, and installed power reduced to 52.3% compared to the traditional electro-hydraulic proportional valve control system, meanwhile power consumption is reduced to 49.2% compared to ordinary proportional valve system.

Key words: compound control strategy, fast forging, hydraulic press, energy-saving

中图分类号:

TH137.5

姚静, 曹晓明, 李彬, 孔祥东, 周芳. 快锻系统压力位移复合控制节能研究[J]. 中国机械工程, 2016, 27(02): 265-272.

Yao Jing, Cao Xiaoming, Li Bin, Kong Xiangdong, Zhou Fang. Research on Energy Saving of Pressure and Displacement Compound Control Strategy for Fast Forging System[J]. China Mechanical Engineering, 2016, 27(02): 265-272.

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