Transactions of Materials and Heat Treatment

Title：Batch forming control strategy of hydraulic press

Authors：

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ClassificationCode：TH137

year,vol(issue):pagenumber：2020,45(1):151-155

Abstract：

In order to improve the plastic forming performance of metal products by batch forming, a mathematical model of metal hydraulic forming system was established. Aiming at the problem of hysteresis and periodic error in tracking periodic displacement signals, a compound control strategy (ROF control) based on repeated control and output feedback was proposed to improve the system performance. Then, the hydraulic cylinder displacement, velocity and acceleration response characteristics under the ROF control strategy were verified by the experimental platform for simulating metal hydraulic forming, and it was compared and analysed with the PID control strategy. The experimental results show that the system tracking accuracy achieves 0.05 mm by the ROF control strategy, and after two working cycles, there is almost no hysteresis in the tracking process. Thus, it ensures that the metal is shaped by the specified harmonic signals to improve the performance of metal parts by batch forming effectively.

Funds：

湖南省自然科学基金资助项目（2016JJ3088）

作者简介：杨俊（1985-），男，博士，讲师 E-mail： yangcsu@126.com 通讯作者：陈中祥（1984-），男，博士，讲师 E-mail：chenzx@hunnu.edu.cn

Reference：

[1] Allwood J M, Duncan S R, Cao J, et al. Closed loop control of product properties in metal forming [J]. CIRP Annals, 2016, 65(2): 573-596.

[2]Mamutov A V, Golovashchenko S F, Mamutov V S, et al. Modeling of electrohydraulic forming of sheet metal parts [J]. Journal of Materials Processing Technology, 2015, 21(9):84-100.

[3]Maghareh A, Silva C E, Dyke S J. Servo hydraulic actuator in controllable canonical form: Identification and experimental validation [J]. Mechanical Systems and Signal Processing, 2018, 100(1):398-414.

[4]Schenke C, Weber J R. Energy efficiency of displacement control drive systems in hydraulic forming presses [J]. Journal of Manufacturing Science and Engineering, 2018, 141(2):144-152.

[5]杨俊,黄书舟,陈中祥.大型自由锻水压机操控系统双阀并联控制[J].锻压技术, 2018, 43(10): 141-145.

Yang J, Huang S Z, Chen Z X. Two valve parallel control of large free forging hydraulic press operation control system[J]. Forging & Stamping Technology.2018.43(10):141-145.

[6]Yung I, Zquez C, Freidovich L B. Robust position control design for a cylinder in mobile hydraulics applications [J]. Control Engineering Practice, 2017, 69(2):36-49.

[7]杨俊,曾乐,谭建平.液压比例系统特性分析与非对称控制策略[J].华中科技大学学报：自然科学版, 2016, 44(5): 121-127.

Yang J, Zeng L, Tan J P. Characteiistic analysis of hydraulic proportional system and asymetric control strategy[J]. Journal of Huazhong University of Science and Technology: Natural Science Edition, 2016, 44(5): 121-127.

[8]田慧慧, 苏玉鑫. 机器人系统输出反馈重复学习轨迹跟踪控制[J].控制与决策, 2012, 27(11): 1756-1760.

Tian H H, Su Y X.Global asymptotic stable repetitive output feedback tracking control of robot manipulators[J].Control and Decision, 2012, 27(11): 1756-1760.

[9]严求真,柳向斌,朱胜,等.非参数不确定系统的双周期重复控制[J].控制理论与应用, 2018, 35(9): 1311-1318.

Yan Q Z, Liu X B, Zhu S, et al. Dual period repetitive control for nonparametric uncertain systems[J].Control Theory & Applications,2018, 35(9): 1311-1318.

[10] Schulting P, Vanderbroeck C H, De R W. Analysis and design of repetitive controllers for applications in distorted distribution grids [J]. IEEE Transactions on Power Electronics, 2019, 34(1): 996-1004.

[11] Shao Z, Xiang Z. High order repetitive control for discrete time linear switched systems [J]. International Journal of Systems Science, 2017, 48(9): 1882-1890.

[12]Yang Y, Ma L, Huang D. Development and repetitive learning control of lower limb exoskeleton driven by electrohydraulic actuators[J]. IEEE Transactions on Industrial Electronics, 2017, 64(5): 4169-4178.

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