汽车起重机变转速电液流量匹配控制研究  

Variable speed electro-hydraulic flow matching control of truck crane

作　　者：袁丹 余聪 王飞[2,3] 和进军 艾超 YUAN Dan;YU Cong;WANG Fei;HE Jin-jun;AI Chao(SANY Automobile Hoisting Machinery Co.,Ltd.,Changsha 410600,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;School of Mechanical and Electrical Engineering,Xinjiang Institute of Engineering,Urumqi 830023,China)

机构地区：[1]三一汽车起重机械有限公司,湖南长沙410600 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]新疆工程学院机电工程学院,新疆乌鲁木齐830023

出　　处：《机电工程》2022年第8期1168-1174,共7页Journal of Mechanical & Electrical Engineering

基　　金：河北省高等学校科学技术研究重点项目(ZD2021340,ZD2020166)。

摘　　要：针对汽车起重机阀前补偿负载敏感(LS)系统预设泵压力裕度带来的能耗问题,以及系统流量饱和时对变幅伸缩机构进行复合动作带来的操控性问题,提出了一种基于变转速的电液流量匹配控制系统和一种抗流量饱和控制算法。首先,分析了负载敏感(LS)系统的工作原理,并提出了一种应用于汽车起重机的变转速电液流量匹配控制系统;然后,分析了变转速电液流量匹配控制系统的工作特性和能耗特性,并设计出了一种抗流量饱和控制策略;最后,利用AMESim软件搭建了负载敏感(LS)系统和电液流量匹配系统的仿真模型,并对系统的节能和抗流量饱和特性分别进行了仿真分析。研究结果表明:相比于负载敏感(LS)系统,变转速电液流量匹配系统节能5%~7%,且在系统流量饱和时,变幅伸缩机构的流量可根据各联主阀的开度比例分配,提升了复合动作的协调性。Aiming at the problem of energy consumption caused by the preset pump pressure margin of the pre-valve compensation load sensing(LS)system of truck crane and the control problem caused by the compound action of the variable amplitude expansion mechanism when the system flow saturation,an electro-hydraulic flow matching control system based on variable speed and an anti-flow saturation control algorithm were proposed.Firstly,the working principle of LS system was analyzed and a variable speed electro-hydraulic flow matching control system applied to truck crane was proposed.Then,the working characteristics and energy consumption characteristics of the variable speed electro-hydraulic flow matching control system were analyzed and an anti-flow saturation control strategy was designed.Finally,the simulation model of LS system and electro-hydraulic flow matching system was built by AMESim software,and the energy saving and anti-flow saturation characteristics of the system were simulated and analyzed.The results showed that compared with LS system,the variable speed electro-hydraulic flow matching system could save 5%~7%energy,and when the system flow was saturated,the flow of the variable speed telescopic mechanism could be distributed according to the proportion of the opening of each main valve,which improved the coordination of the compound action.

关 键 词：轮式自行起重机 液压传动装置 能耗特性 节能效果 抗流量饱和控制算法 变转速电液流量匹配 负载敏感系统 

分 类 号：TH213.6[机械工程—机械制造及自动化] TH137