Transactions of Materials and Heat Treatment

Title：Control strategy and experimental verification on robust of electro-hydraulic system in large equipment

Authors： Gao Yongwei Tan Jianping Yang Jun

Unit： Hunan Chemical Vocational Technology College Central South University

KeyWords： electro-hydraulic system nonlinear control improved robust control strategy

ClassificationCode：TP273

year,vol(issue):pagenumber：2015,40(5):90-95

Abstract：

For problems such as nonlinearity, uncertainty and existing nonlinear control strategy which are difficult to apply to large hydraulic equipment, the uncertain parameters in electro-hydraulic system model were decomposed into combinations of accurate terms and uncertainties tems by weighing the complexity of control strategy and the accuracy of model. A robust control strategy suitable to industrial PLC was proposed by controlling accurate terms through the feedback from linearization strategy, and compensating uncertain terms through the improving of sliding mode control strategy. The system robustness was experimented under conditions of load mass changes, system pressure fluctuations, load force changes and bulk modulus changes respectively. The results show that the improvement of robust strategy can enhance the system robustness and control accuracy.

Funds：

国家科技重大专项（2009ZX04005-031）; 高性能复杂制造国家重点实验室自主探索基金（zzyjkt2013）；中南大学中央高校基本科研业务费专项资金资助(2013zzts030)

高永卫（1972-），女，硕士, 副教授

Reference：

［1］高峰，郭为忠，宋清玉，等.重型制造装备国内外研究与发展 [J]. 机械工程学报, 2010, 46(19): 93-108.Gao F, Guo W Z, Song Q Y, et al. Current development of heavy-duty manufacturing equipments[J]. Journal of Mechanical Engineering, 2010,46(19):93-108.
［2］雷源忠.我国机械工程研究进展与展望[J]. 机械工程学报, 2009, 45(5): 1-11.Lei Y Z. Recent research advances and expectation of mechanical engineering science in China[J]. Journal of Mechanical Engineering, 2009, 45(5): 1-11.
［3］Heertjes M，Verstappen R.Self-tuning in integral sliding mode control with a Levenberg-Marquardt algorithm[J]. Mechatronics, 2014, 24(4): 385-393.
［4］Guan C，Pan S.Adaptive sliding mode control of electro-hydraulic system with nonlinear unknown parameters[J]. Control Engineering Practice, 2008, 16(11): 1275-1284.
［5］Ferreira J A，Sun P，Gracio J J.Close loop control of a hydraulic press for springback analysis[J]. Journal of Materials Processing Technology, 2006, 177(1-3): 377-381.
［6］Ahn K K，Truong D Q.Online tuning fuzzy PID controller using robust extended Kalman filter[J]. Journal of Process Control, 2009, 19(6): 1011-1023.
［7］黄一，张文革.自抗扰控制器的发展[J]. 控制理论与应用, 2002, 19(4): 485-492.Huang Y, Zhang W G. Development of active disturbance rejection controller[J]. Control Theory and Applicaiton,2002,19(4):485-492.
［8］张秀玲.液压弯辊系统的优化神经网络内模控制[J]. 中国机械工程, 2007, 18(20): 2419-2421.Zhang X L. Optimal neural network internal model control for hydraulic bending roll system[J]. Chinese Mechanical Engineering, 2007, 18(20): 2419-2421.
［9］张鹏，李颖晖，肖蕾.基于递归神经网络的伺服系统自适应反步控制[J]. 系统仿真学报, 2008, (6): 1475-1478.Zhang P, Li Y H, Xiao L. Adaptive backstepping control for servo system based on recurrent neural network[J]. Journal of System Simulation, 2008, (6): 1475-1478.
［10］杨博，李宛洲，姜兆芳.工业重载液压力伺服系统的抗扰动控制[J]. 自动化学报, 2009, 35(7): 926-932.Yang B, Li W Z, Jiang Z F. Disturbance rejection control of industrial heavy-load hydraulic force servo system[J]. Acta Automatica Sinica, 2009, 35(7): 926-932.
［11］杨俊，谭建平，陈玲，等.大型水压机操纵系统瞬变负载的控制策略[J]. 中南大学学报：自然科学版, 2014, 45(2): 421-427.Yang J, Tan J P, Chen L, et al.Control strategy of hydraulic operation system under transient load in large hydraulic press[J]. Journal of Central South University：Science and Technology , 2014, 45(2): 421-427.
［12］Li K，Mannan M A，Xu M.Electro-hydraulic proportional control of twin-cylinder hydraulic elevators[J]. Control Engineering Practice, 2001, 9(4): 367-373.
［13］Dinh Q T，Kyoung K A. Force control for hydraulic load simulator using self-tuning grey predictor-fuzzy PID[J]. Mechatronics, 2009, 19：233-246.
［14］杨俊，谭建平.阀控非对称缸系统鲁棒反馈线性化控制[J]. 华中科技大学学报：自然科学版, 2014, 42(2): 106-110.Yang J, Tan J P. Robust feedback linearization control of valve controlled asymmetric cylinder system[J]. Journal of Huazhong University of Science and Technology：Natural Science Edition, 2014, 42(2): 106-110.

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