液压与气动2025，Vol.49Issue(2)：108-117,10.DOI:10.11832/j.issn.1000-4858.2025.02.012
起重机温度自补偿恒速落幅控制研究
Research on Temperature Self-compensated Constant Velocity Lowering Control of Cranes
摘要
Abstract
This study proposes a constant velocity lowering control scheme with temperature self-compensation mechanism to address the problems of uneven lowering velocity and difficult operation caused by changes in load pressure and oil temperature interference factors during crane lowering.The scheme achieves constant lowering velocity control under wide temperature range conditions.By analyzing the principle of constant velocity lowering of the crane and the flow characteristics of the variable amplitude counterbalance valve,a control method is determined that matches the flow rate of the variable amplitude counterbalance valve with the lowering angle.This study use AMESim software to obtain the pilot flow pressure difference characteristic data of the variable amplitude counterbalance valve and constructed a lowering controller model.On this basis,constant velocity lowering system simulations are conducted for three oil temperatures of 25、45、65℃,and verified through experiments.The results show that the average error between the constant velocity lowering angular velocity and the set signal of this scheme under wide temperature range conditions is less than 5％,which can effectively overcome oil temperature interference and achieve automatic constant velocity lowering control of the crane,providing a certain reference for optimizing the crane control system.关键词
起重机/恒速落幅/温度补偿/变幅平衡阀/流量匹配控制Key words
crane/constant velocity lowering/temperature compensation/variable amplitude counterbalance valve/flow matching control分类
机械制造引用本文复制引用
刘增光,冯珂,岳大灵,魏列江,苏利强,高宏飞..起重机温度自补偿恒速落幅控制研究[J].液压与气动,2025,49(2):108-117,10.基金项目
甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-09) （2024CXPT-09）
