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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。
Aiming at the influencing factors of control characteristics of quick-forging circuit of accumulator hydraulic pump accumulator, the power bond graph method was used to carry out the simulation research by Matlab / Simulink. The 0.6 MN hydraulic control hydraulic press was used as a platform for experimental research. The hydraulic cylinder, pipeline, accumulator, proportional variable radial piston pump and movable beam were built, and the power bond graph model of the circuit was obtained. The Matlab / Simulink simulation model was deduced, Conducted a pilot study. The effects of forging frequency, forging stroke and initial pressure on the control characteristics of quick-forging circuit of pump-controlled hydraulic accumulator were studied respectively through simulation and experiment. The results show that the forging stroke can be reduced, the forging frequency can be increased within a certain range, and the forging accuracy can be improved. The initial pressure of the accumulator can be increased and the response of the circuit becomes faster.