Conventional hydraulic actuator is controlled by mechanically connected orifices valve. This controllability of this method is poor and the energy consumption is huge especially under the over-running condition. So a novel system configuration is presented, in which boom cylinder, stick cylinder and swing motor are controlled with separate meter in and meter out technology, bucket cylinder and travel motors are controlled with conventional valves. A virtual prototype is established,which consists of the hydraulic excavator mechanical structure with multi-body dynamics and electro-hydraulic system. The dynamic, static performances as well as the energy consumption characteristics of the boom, arm and swing actuators are investigated under the condition of load sensing hydraulic system and the proposed system. After that, the physical prototype based on the proposed configuration system is established and its performance is tested. The experimental results show that the accuracy of the virtual prototype is validated, the proposed configuration system can significantly decreases the pressure losses through the valve and improve the energy efficiency of the machine; the pressure shocks within hydraulic actuators is decreased as well, thus the stationarity of the whole machine is improved accordingly.
DONG Zhixin
,
HUANG Weinan
,
GE Lei
,
QUAN Long
,
HUANG Jiahai
,
YANG Jing
. Research on the Performance of Hydraulic Excavator with Pump and Valve Combined Separate Meter In and Meter Out Circuits[J]. Journal of Mechanical Engineering, 2016
, 52(12)
: 173
-180
.
DOI: 10.3901/JME.2016.12.173
[1] ZIMMERMAN J D,PELOSI M,WILLIAMSON C A,et al. Energy consumption of an LS excavator hydraulic system[C]//ASME 2007 International Mechanical Engineering Congress and Exposition, Seattle,Washington,USA,November 11-15,2007：117-126.
[2] 杨敬. 具有可停缸动力系统的液压挖掘机功率匹配及节能研究[D]. 太原：太原理工大学,2013.
YANG Jing. Study on power matching and energy saving of hydraulic excavator with cylinder deactivation power system[D]. Taiyuan：Taiyuan University of Technology,2013.
[3] 张彦廷,王庆丰,肖清. 混合动力液压挖掘机液压马达能量回收的仿真及试验[J]. 机械工程学报,2007,43(8)：218-223.
ZHANG Yanting,WANG Qingfeng,XIAO Qing. Simulation and experimental research on energy regeneration with hydraulic motor for hybrid drive excavator[J]. Chinese Journal of Mechanical Engineering,2007,43(8)：218-223.
[4] BACKÉ W. Design systematics and performance of cartridge valve controls[C]//International Conference on Fluid Power,Tampere,Finland,1987,3：1-48.
[5] ANDERSSON B. Hydraulic valve means[P]. US Patent：4662601. 1987-05-05.
[6] NIELSEN B K. Controller development for a separate meter-in separate meter-out fluid power valve for mobile applications[D]. Aalborg：Aalborg University,2005.
[7] SHENOUDA A. Quasi-static hydraulic control systems and energy savings potential using independent metering four-valve assembly configuration[D]. Atlanta：Georgia Institute of Technology,2006.
[8] ERIKSSON B. Mobile fluid power systems design：with a focus on energy efficiency[D]. Linköping：Linköping University,2010.
[9] YAO B,CHRIS D. Energy-saving adaptive robust motion control of single-rod hydraulic cylinders with programmable valves[C]//Proceedings of the American Control Conference,Anchorage,AK,May 8-10,2002：4819-4824.
[10] YAO B,LIU S. Energy-saving control of hydraulic systems with novel programmable valves[C]// Proceedings of the 4th World Congress on Intelligent Control and Automation,Shanghai,China,2002：81-91.
[11] MEYER C,WEILER D,MURRENHOFF H. Optimal nominal pressurization generation：A novel idea for a discrete logic control using an independent metering valve configuration[C]//Proceedings of the ASME 2011 Dynamic Systems and Control Conference,Arlington,VA,USA,October 31 - November 2,2011：1-4.
[12] SITTE A,WEBER J. Structural design of independent metering control systems[C]//The 13th Scandinavian International Conference on Fluid Power,Linköping,Sweden,June 3-5,2013：261-270.
[13] CHOI K,SEO J,NAM Y,et al. Energy-saving in excavators with application of independent metering valve[J]. Journal of Mechanical Science and Technology,2015,29(1)：387-395.
[14] 王庆丰. 大惯性负载电液进出口节流独立调节系统研究[J]. 中国机械工程,1999,10(8)：853-855.
WANG Qingfeng. Research on electro-hydraulic meter-in and meter-out independent regulation system[J]. China Mechanical Engineering,1999,10(8)：853-855.
[15] 权龙,廉自生. 应用进出油口独立控制原理改善泵控差动缸系统效率[J]. 机械工程学报,2005,41(3)：123-127.
QUAN Long,LIAN Zisheng. Improving the efficiency of pump controlled differential cylinder system with inlet and outlet separately controlled principle[J]. Chinese Journal of Mechanical Engineering,2005,41(3)：123-127.
[16] 权龙,冯克温,陈青. 泵阀复合流量匹配进出油口独立控制电液系统：中国,ZL200710062517.3[P]. 2008-01-23.
QUAN Long,FENG Kewen,CHEN Qing. Independent control electro-hydraulic system of oil inlet and outlet with pump valve composite flux matched：China,ZL200710062517.3[P]. 2008-01-23.
[17] 曹剑,徐兵,杨华勇,等. 负载口独立控制系统静态工作点选取原则及仿真分析[J]. 机械工程学报,2006,42(6)：11-15.
CAO Jian,XU Bing,YANG Huayong,et al. Principles for choosing static operation points and simulation analysis of fluid power system based on separate control of actuator ports[J]. Chinese Journal of Mechanical Engineering,2006,42(6)：11-15.
[18] 刘英杰. 负载口独立电液比例方向阀控制系统关键技术研究[D]. 杭州：浙江大学,2011.
LIU Yingjie. Research on key techniques of independent metering directional valve control system[D]. Hangzhou：Zhejiang University,2011.
[19] 曹彦楠. 集成式高响应节能控制阀的节能特性研究[D]. 秦皇岛：燕山大学,2011.
CAO Yannan. Research on the energy performance of integrated high response energy control valve[D]. Qinhuangdao：Yanshan University,2011.
[20] QUAN L,MA J,WANG Y. Research on the performance of new type of proportional pressure and flow control valve[J]. Chinese Journal of Mechanical Engineering,2003,16(3)：281-284.
