Transactions of Materials and Heat Treatment

Title：Study on servo press control system based on Newton iteration method

Authors： Hong Rui Ye Chunsheng

Unit： Huazhong University of Science and Technology

KeyWords： servo press drawing process Newton iteration algorithm kinematical equations slider block displacement crank angle

ClassificationCode：TP273

year,vol(issue):pagenumber：2016,41(12):82-87

Abstract：

In order to realize the precise control of the slider displacement under specific conditions, a set of servo control system design scheme based on Newton iteration method was put forward to obtain drawing process curve for four-bar linkage press. Therefore, the mathematical equation of crank angle and sliding block displacement was established by geometric method, and the kinematic equations were derived and simulated. Then, the mathematics relationship between the crank angle and the sliding block displacement based on fitting the simulation data was obtained, and its multi-point and one-time accurate solution was realized by fitting the target process curve with MATLAB and based on Newton iterative algorithm. Furthermore, the function of crank angle and time was fit by the calculation results. Finally, the frequency and pulse number for the target process curve (slider block displacement)during one regulating period were derived, and target pulse was output by STM32. The research results show that the target process curve is consistent with the actual displacement of the slider, and the precise control of the sliding block displacement can be realized.

Funds：

基金项目:国家自然科学基金资助项目（51375190）

作者简介：洪瑞（1990-），男，硕士 E-mail：hongrui_hust@foxmail.com 通讯作者：叶春生（1962-），男，博士，副教授 E-mail：csyehust@126.com

Reference：

［1］Osakada K, Mori K, Altan T, et al. Mechanical servo press technology for metal forming
［J］. CIRP Annals-Manufacturing Technology, 2011, 60(2):651-672.

［2］李麟, 叶春生, 莫健华. 基于ARM的伺服压力机网络控制系统设计
［J］. 锻压技术, 2013,38(3):102-106.

Li L, Ye C S, Mo J H. Network control system design of servo press based on ARM
［J］. Forging & Stamping Technology, 2013,38(3):102-106.

［3］周洋, 叶春生, 莫健华. 肘杆式伺服压力机运动学仿真与工艺轨迹规划
［J］. 锻压装备与制造技术, 2012, 47(3):37-41.

Zhou Y, Ye C S, Mo J H. Toggle servo press kinematics simulation and trajectory planning process
［J］. China Metalforming Equipment & Manufacturing Technology, 2012, 47(3): 37-41.

［4］雷培, 刘云霞. 基于MATLAB的四连杆机构运动分析
［J］. 机械工程与自动化, 2009,(2):74-75.

Lei P, Liu Y X. Kinematical analysis of a four-bar mechanism using MATLAB
［J］. Mechanical Engineering and Automation, 2009,(2):74-75.

［5］俞伟洋, 叶春生. 基于MATLAB的四连杆伺服压力机控制求解
［J］. 锻压技术, 2015, 40(9):69-73.

Yu W Y, Ye C S. Research on the control solving of four-bar link servo press based on MATLAB
［J］. Forging & Stamping Technology, 2015, 40(9):69-73.

［6］唐家德. MATLAB在非线性曲线拟合中的应用研究
［J］. 智能计算机与应用, 2008,(1):57-59.

Tang J D. Research on the application of MATLAB in nonlinear curve fitting
［J］. Intelligent Computer and Application, 2008,(1):57-59.

［7］Dantchev S, Alhatib F. Nonlinear curve fitting for bioelectrical impedance data analysis: a minimum ellipsoid volume method
［J］. Physiological Measurement, 1999, 20(1):N1-9.

［8］Niu Q. Numerical continuation method for nonlinear curve fitting by use of least square method
［J］. Journal of Hehai University, 2003, 31(5):597-600.

［9］柳辉. 解非线性方程的牛顿迭代法及其应用
［J］. 重庆工学院学报:自然科学版, 2007, 21(8):95-98.

Liu H. Newton iterative method for solving nonlinear equations and its application
［J］. Journal of Chongqing Institute of Technology: Natural Science Edition, 2007, 21(8):95-98.

［10］Chun C. Construction of Newton-like iteration methods for solving nonlinear equations
［J］. Numerische Mathematik, 2006, 104(3):297-315.

Service：

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