Transactions of Materials and Heat Treatment

Title：Research on method of electro-hydraulic hybrid control based on feedforward tracking compensation

Authors： Song Zhao Xu Yimin

Unit： Wuhan University of Science & Technology

KeyWords： position & pressure control iterative learning tracking compensation smooth switch

ClassificationCode：TH137

year,vol(issue):pagenumber：2015,40(9):87-90

Abstract：

For the optimization of electro-hydraulic position and pressure hybrid controlling process which are widely used in metal forging equipment, the working principle of electro-hydraulic servo hybrid control system was analyzed and the mathematical models of position & pressure control system were established respectively according to the loaded cylinders system of valve control. The open-closed loop PID iterative learning algorithm was used to correct the control input, and a feedforward tracking compensation method was utilized to design a composite controller. The simulation result shows that the impulse voltage can be eliminated effectively to realize the actuator switching fast and smoothly between position and pressure closed-loop control, which will improve the control performance and quality of the products.

Funds：

国家自然科学基金资助项目(51275365)

宋昭(1988 - )，男，硕士研究生

Reference：

［1］武其俭,刘振玺. 热轧板带生产设备的发展[J].钢铁,2000,35(8):67-70.Wu Q J，Liu Z X .Development of hot strip mill[J].Iron and Steel, 2000,35(8):67-70.
［2］夏敏,向华,庄新村,等. 基于伺服压力机的板料成型研究现状与发展趋势[J].锻压技术,2013，38(2)：1-5.Xia M，Xiang H，Zhuang X C，et al.Research status and development tendency of sheet metal forming using servo press[J].Forging & Stamping Technology, 2013，38(2)：1-5.
［3］杨征瑞,花克勤,徐秩. 电液比例与伺服控制[M].北京：冶金工业出版社,2009.Yang Z R，Hua K Q，Xu Z.Electro-Hydraulic Proportional Servo Control[M].Beijing: Metallurgical Industry Press,2009.
［4］于少娟,齐向东,吴聚华. 迭代学习控制理论及应用[M].北京：机械工业出版社,2005.Yu S J,Qi X D,Wu J H. Iterative Learning Control Theory and Applications[M].Beijing: Machinery Industry Press,2005.
［5］周育才,刘少军,刘忠伟,等. 水压机液压位置保持系统迭代控制的仿真研究[J].锻压技术,2007，32(6):116-119.Zhou Y C，Liu S J，Liu Z W，et al.Simulation research on iterative learning control on hydraulic position holding system of water press[J].Forging & Stamping Technology, 2007，32(6):116-119.
［6］吴晓明,栾海英,张强,等. 热轧带钢地下卷取机踏步系统的应用研究[J].液压与气动,2003,(10):46-48.Wu X M,Luan H Y,Zhang Q,et al.Application research on automation jumping control system used in the hot-rolling mill[J]. Chinese Hydraulic & Pneumatic, 2003,(10):46-48.
［7］Karpenko M, Sepehri N. On quantitative feedback design for robust position control of hydraulic actuators[J]. Control Engineering Practice,2010,18(3): 289-299.
［8］隆志力,禹新路,朱超.基于速度阻尼的位置/压力切换控制模型[J].中国机械工程,2014,25(14):1946-1950.Long Z L,Yu X L, Zhu C.Position/pressure switching control based on damping[J]. Chinese Mechanicial Engineering, 2014,25(14):46-50.
［9］邓佳.二氧化铀芯块成型电液复合控制系统的研究[D].武汉：华中科技大学，2013.Deng J.Research of Electro-hydraulic Compound Control System for Uranium Dioxide Pellet Molding[D].Wuhan: Huazhong University of Science and Technology,2013.

Service：

【This site has not yet opened Download Service】【Add Favorite】