Transactions of Materials and Heat Treatment

Title：Study on fluid power transmission system modeling and control characteristics of 60 MN hydraulic press

Authors： Yu Bin Yao Jing Feng Jingchang Li Xuebing Kong Xiangdong

Unit： Yanshan University Key Laboratory of Advanced

KeyWords： hydraulic press fluid power transmission system main distributor control characteristics

ClassificationCode：TG315;TH137

year,vol(issue):pagenumber：2015,40(5):71-78

Abstract：

The composition and working principle of 60 MN hydraulic press system were introduced, and the mathematical model and control flow chart of fluid power transmission system on 60 MN hydraulic press were established by the mechanism. The control characteristics under three typical working conditions including no θ load with long stroke, heavy load with short stroke and high frequency with short stroke were analyzed by comparing the experiment with the simulation, and the accuracy of mathematical model was verified experimentally. Further more, it analyzed the influences of the length of tube, the dead zone angle of main distributor handle and the quality of moving beam in the hydraulic system on the control performance of fluid power transmission system. The study shows that 60 MN hydraulic press is of good working performance under the above three typical working conditions. The improvement on the response speed of fluid power transmission system can be realized by controlling and optimizing the design of the electro hydraulic servo system and water system. However, the length of tube, the dead zone angle of main distributor handle and the quality of moving beam have different degrees of influences on control characteristics, which should be specially considered in the optimization of the hydraulic press structure.

Funds：

河北省自然科学基金青年科学基金资助项目(E2014203247)；燕山大学博士基金项目（B930）

俞滨(1985-)，男，博士，讲师;通讯作者：孔祥东(1959-)，男，博士，教授，博士生导师

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