摘要
针对泵控液压机蓄能器快锻回路控制特性影响因素展开研究,采用功率键合图的方法,通过Matlab/Simulink进行仿真研究,以0.6 MN泵控液压机为平台进行实验研究。搭建了液压缸、管道、蓄能器、比例变量径向柱塞泵、活动横梁的模型,得出回路的功率键合图模型,推导出Matlab/Simulink仿真模型,并在0.6 MN泵控液压机上进行了试验研究。通过仿真和实验分别研究了锻造频率、锻造行程、初始压力变化对泵控液压机蓄能器快锻回路控制特性的影响。研究结果表明:减小锻造行程,在一定范围内提高锻造频率,锻造精度提高;提高蓄能器初始压力,回路响应变快。
The influence factors of control characteristics of accumulator fast forging circuit of pump-controlled hydraulic press were re- searched by using the method of power bond graph, the simulation research was done through Matlab/Simulink and the experiment was carried out on pump-controlled hydraulic press of 0. 6 MN. The models of cylinder, pipe, accumulator, proportion variable radial piston pumps and movable crossbeam were established, while the power bond graph model of circuit and the Matlab/Simnlink simulation model were deduced. In addition, the experimental system of pump-controlled hydraulic press of 0. 6 MN was designed and established. The effects of forging frequency, forging stroke and initial pressure on the control characteristics of accumulator fast forging circuit of pump- controlled hydraulic press were investigated through simulation and experiment. The results indicate that the decreased forging stroke can result in an increased forging frequency and an improved forging precision within certain limits ; meanwhile, the initial pressure of accumula- tor is higher, the response of circle is faster.
出处
《锻压技术》
CAS
CSCD
北大核心
2014年第2期88-95,101,共9页
Forging & Stamping Technology
基金
国家自然科学基金资助项目(51375422)
高等学校博士学科点专项科研基金(20101333110001)
秦皇岛市科学技术研究与发展计划项目(201302A020)
关键词
泵控液压机
蓄能器快锻
控制特性
pump-controlled hydraulic press
accumulator fast forging
control characteristics
