挖掘机电液流量匹配控制系统动态性能研究

摘要/Abstract

摘要：

分析了液压挖掘机基于与负载压力无关流量分配（LUDV）多路阀的电液流量匹配控制（EFMC）系统的控制原理,建立了EFMC系统的液压挖掘机虚拟样机模型,采用实时检测油缸速度信号的反馈闭环控制方法提高流量匹配的精度。分别建立液压挖掘机EFMC系统动力学模型与液压系统模型并根据其实际工况进行联合仿真,研究了挖掘作业过程动态特性及节能特性。与传统的基于LUDV的负载敏感系统实验结果进行对比,结果表明: EFMC系统与传统负载敏感系统相比,改善了系统的动态响应特性和稳定性,泵的压力裕度明显减小,提高了系统的节能性,反馈闭环控制系统动态响应特性也明显得到提高。研究方法可为进一步研究挖掘机的动态性、节能性、稳定性提供理论依据和参考。

关键词: 联合仿真, 电液流量匹配控制, 负载敏感, 动态特性, 反馈闭环控制, 节能特性

Abstract:

A virtual prototype of EFMC system in hydraulic excavator was constructed by analyzing the control principle of EFMC system based on lastdruck unabhngige durch-fluss verteilung (LUDV) multi-way valve,the accuracy of flow matching was improved by adopting feedback closed-loop control method with real-time detection of oil cylinder speed signals.The dynamic and hydraulic models of EFMC system in hydraulic excavator were constructed respectively, and the co-simulation was conducted based on actual working conditions, the dynamic characteristics and energy-saving characteristics of mining operation process were studied, compared the experimental results with the traditional LUDV load-sensing system, the results indicate that compared with the load-sensing system, the dynamic response characteristics and stability performance of the EFMC system are improved,and the pressure margin is reduced obviously, the energy efficiency is improved, also the dynamic response characteristics of feedback closed-loop control system are improved. Theoretical basis and reference are provided for further research on dynamic characteristics, energy-saving characteristics and stability performance in excavator.

Key words: co-simulation, electro-hydraulic flow matching control(EFMC), load-sensing, dynamic characteristics, feedback closed-loop control, energy-saving characteristics

中图分类号:

TH137.5

王相兵, 童水光, 葛俊旭, 张健. 挖掘机电液流量匹配控制系统动态性能研究[J]. 中国机械工程, 2014, 25(15): 2030-2037.

Wang Xiangbing, Tong Shuiguang, Ge Junxu, Zhang Jian. Study on Dynamic Performance of EFMC System in Hydraulic Excavator[J]. China Mechanical Engineering, 2014, 25(15): 2030-2037.

参考文献

[1]高峰,潘双夏.负流量控制模型与试验研究[J].机械工程学报，2005, 41(7):107-111.
Gao Feng,Pan Shuangxia.Experimental Study on Model of Negative Control of Hydraulic System[J].Chinese Journal of Mechanical Engineering,2005,41(7):107-111.
[2]Maciejewski J, Jarzebowski A, Trampczynski W. Study on the Efficiency of the Digging Process Using the Model of Excavator Bucket[C]//The 14th International Society for Terrain-Vehicle Systems (ISTVS) Conference: Vehicle and Terrain Mechanics in the 21st Century Virtual World. Vicksburg, Mississippi, USA, 2002:312-322.
[3]王庆丰,魏建华.工程机械液压控制技术的研究进展与展望[J].机械工程学报,2003, 39(12):51-56.
Wang Qingfeng, Wei Jianhua. Progress and Prospectsin the Research of Hydraulic Control Forconstruction Machine[J]. Chinese Journal of Mechanical Engineering,2003, 39(12):51-56.
[4]孔晓武.带长管道的负载敏感系统研究[D].杭州:浙江大学,2003.
[5]Finzel R,Helduser S. New Electro-hydraulic Control Systems for Mobile Machinery[C]//Proceedings of the Fluid Power and Motion Control FPMC 2008.Bath,UK:FPMC,2008:309-321.
[6]Finzel R,Helduser S,Jang DS. Electro-hydraulic Control Systems for Mobile Machinery with Low Energy Consumption[C]//Proceedings of the 7th International Conference on Fluid Power Transmissionand Control. Hangzhou: ICFP, 2009:214-219.
[7]贾文华,殷晨波,曹东辉,等.挖掘机正流量泵控液压系统的特性分析[J].南京工业大学学报(自然科学版),2011,33(6):98-101.
Jia Wenhua,Yin Chenbo, Cao Donghui, et al.Analysis on Positive Flow Pump Control System of Hydraulic Excavator[J]. Journal of Nanjing University of Technology(Natural Science Edition), 2011,33(6): 98-101.
[8]Axin M,Eriksson B,Palmberg J O.Energy Efficient Load Adapting System without Load Sensing:Design and Evaluation[C]//The 11th Scandinavian International Conference on Fluid Power.Linkping,Sweden:Linkping University,2009:58-73.
[9]Grosbrink B,Harms T.Control Concept for an Advanced Load-sensing System[C]//Proceedings of the 7th International Conference on Fluid Power Transmission and Control. Hangzhou:World Publishing Corporation,2009:201-204.
[10]Eriksson B, Palmberg J O.How to Handle Auxiliary Functions in Energy Efficient,Single Pump,Flow Sharing Mobile Systems[C]//The 7th International Fluid Power Conference.Aachen:Apprimus Wissen-Schaftsver,2010:1-14.
[11]Axin M,Eriksson B,Palmbergj O, et al. Dynamic Analysis of Single Pump Flow Controlled Mobile Systems[C]//The Twelfth Scandinavian International Conference on Fluid Power.Tampere,Finland:Tampere University of Technology, 2011:1-16.
[12]杨华勇,刘伟,徐兵,等. 挖掘机电液流量匹配控制系统特性分析[J].机械工程学报,2012,48(14): 156-163.
Yang Huayong, Liu Weil, Xu Bing, et al. Characteristic Analysis of Electro-hydraulic Flow Matching Control System in Hydraulic Excavator[J]. Journal of Mechanical Engineering, 2012,48(14): 156-163.
[13]Hall A S,McAree P R.Robust Bucket Position Tracking for a Large Hydraulic Excavator[J].Mechanism and Machine Theory,2005,40(1):1-16.
[14]Masakazu Haga,Watanabe Hiroshi,Kazuo Fujishima.Digging Control Systemfor Hydraulic Excavator[J]. Echatronics, 2001, 11(6):665-676.

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