Multi-level Pressure Switching Displacement Servo Control Systems

China Mechanical Engineering

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Multi-level Pressure Switching Displacement Servo Control Systems

CAO Xiaoming3;GUO Baofeng2,3;WANG Pei3;LI Yao3;YAO Jing1,2,3

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

Online:2017-10-25 Published:2017-10-24
Supported by:
National Natural Science Foundation of China （No. 51575471）

多级压力源液压切换的位置伺服控制系统

曹晓明1;郭宝峰1,2;王佩1;李瑶1;姚静1,2,3

1.燕山大学机械工程学院，秦皇岛，066004
2.燕山大学先进锻压成形技术与科学教育部重点实验室，秦皇岛，066004
3.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

基金资助:
国家自然科学基金资助项目(51575471) ；
河北省在读研究生创新能力培养资助项目(CXZZBS2017039)；
河北省高等学校科学技术研究项目(ZD2017077)
National Natural Science Foundation of China （No. 51575471）

Abstract

Abstract: For conventional valve-controlled servo control system in huge throttling loss, a multi-level pressure hydraulic switching system presented a possible solution to this challenge. Firstly, composition, working principles, definitions of multi-stage output forces and realization of energy-saving mechanism of this new hydraulic system were given, and the mathematical model were established. Secondly, taking a three-level pressure power supply for a displacement control system as example, a hybrid switching control strategy was designed. Finally, an experimental rig was established, and the control and energy saving characteristics of multi-level pressure hydraulic switching system were validated. The results prove that displacement and velocity jitter are existed during pressure switching, it has a significant energy saving effectiveness compared to the conventional hydraulic displacement control systems with the similar useful working energy.

Key words: hydraulic system, switching, displacement control, energy saving

摘要： 针对传统液压阀控系统传动效率低的问题，提出了一种新型液压回路——多级压力源液压切换系统，给出了该新型液压系统的组成、工作原理、多级输出力的定义以及节能机理的实现，并进行了机理建模；以3个压力等级为例，设计了混合控制策略；搭建了多级压力源液压切换系统原理验证实验台。实验结果表明，多级压力源液压切换系统在位移跟随过程中，压力切换时存在位移和速度抖动；与传统液压位置控制系统相比，该液压系统具有显著的节能效果。

关键词: 液压系统, 切换, 位置控制, 节能

CLC Number:

TH137.5

CAO Xiaoming3;GUO Baofeng2,3;WANG Pei3;LI Yao3;YAO Jing1,2,3. Multi-level Pressure Switching Displacement Servo Control Systems[J]. China Mechanical Engineering.

曹晓明1;郭宝峰1,2;王佩1;李瑶1;姚静1,2,3. 多级压力源液压切换的位置伺服控制系统[J]. 中国机械工程.

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Multi-level Pressure Switching Displacement Servo Control Systems

多级压力源液压切换的位置伺服控制系统

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