Research Papers

Predictive Control for Manual Plasma Arc Pipe Welding

[+] Author and Article Information
Xiangrong Li

Adaptive Intelligent Systems LLC,
Lexington, KY 40511
e-mail: xiangrong.li@outlook.com

YuMing Zhang

Adaptive Intelligent Systems LLC,
Lexington, KY 40511;
Institute for Sustainable Manufacturing and Department of Electrical and Computer Engineering,
University of Kentucky,
Lexington, KY 40506
e-mail: ymzhang@engr.uky.edu

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received June 12, 2012; final manuscript received May 2, 2014; published online June 2, 2014. Assoc. Editor: Wei Li.

J. Manuf. Sci. Eng 136(4), 041017 (Jun 02, 2014) (8 pages) Paper No: MANU-12-1173; doi: 10.1115/1.4027627 History: Received June 12, 2012; Revised May 02, 2014

Plasma arc welding (PAW) has several advantages over traditional gas tungsten arc welding (GTAW) process. However, due to its sensitivity to welding parameters, this process has not been widely used in industry, especially for manual welding applications where variations in welding parameters are substantial. This paper introduces and implements a model predictive control (MPC) method to adjust welding current in order to compensate the effects from these variations during manual plasma welding operation. A linear model with adequate accuracy has been selected for the design of control system. Closed-loop control experiments verified the effectiveness of developed control system.

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Rampaul, H., 2002, Pipe Welding Procedures, Industrial Press, New York.
Liang, W.-J., Chen, P., Sheng, S.-P., Jin, Z.-J., Chen, H.-Y., and Wang, X.-F., 2008, “Limit Load Numerical Analysis of Pressure Pipe With Incomplete Welding Defects,” Light Ind. Mach., 26(5), pp. 113–116.
Liu, X.-S., 2010, “Prevention on Welding Defects in Long-Distance Pipeline Welding,” Electr. Weld. Mach., 40(6), pp. 90–92.
Kountchev, R. K., Rubin, S. H., Todorov, V. T., and Kountcheva, R. A., 2011, “Automatic Defection of Welding Defects,” Int. J. Reasoning-Based Intell. Syst., 3(1), pp. 34–43. [CrossRef]
Henon, B. K., 2009, “Orbital Welding of Titanium Pipe for U.S. Navy Ships,” Weld. J., 88(9), pp. 26–28.
Filho, F. A. R., Bracarense, A. Q., Lima II, E. J., Kienitz, K. M., and Ribeiro, E. B., 2010, “Development of Robots for the Pipeline Industry,” Robotics (ISR), 41st Intl' Symposium and 6th German Conference on Robotics (ROBOTIK), Munich, Germany, pp. 1–6.
Xiong, L., 2002, Basics for Welding Engineering, China Machine Press, Beijing, China.
O'brien, R. L., 1990, Welding Handbook, American Welding Society, Miami, FL.
Chang, Y. W., Kim, N. J., and Lee, C. S., 2007, “Effects of the Process Parameters on Beads by Plasma Arc Welding of the Membrane for Lng Ships,” Adv. Mater. Res., 26–28, pp. 507–510. [CrossRef]
Hsiao, Y. F., Tarng, Y. S., and Huang, W. J., 2008, “Optimization of Plasma Arc Welding Parameters by Using the Taguchi Method With the Grey Relational Analysis,” Mater. Manuf. Processes, 23(1–2), pp. 51–58. [CrossRef]
Xu, G., Hu, J., and Tsai, H. L., 2009, “Three-Dimensional Modeling of the Plasma Arc in Arc Welding,” J. Appl. Phys., 104(10), p. 103301. [CrossRef]
Emel, T., Alfred, D., and Erdinc, K., 2009, “Plasma Arc Welding of Modified 12%Cr Stainless Steel,” Mater. Manuf. Processes, 24(6), pp. 649–656. [CrossRef]
Maciejowski, J. M., 2002, Predictive Control: With Constraints, Prentice Hall, Englewood Cliffs, NJ.
Golshan, M., Macgregor, J. F., Bruwer, M.-J., and Mhaskar, P., 2010, “Latent Variable Model Predictive Control (Lv-Mpc) for Trajectory Tracking in Batch Processes,” J. Process Control, 20(4), pp. 538–550. [CrossRef]
Limon, D., Alvarado, I., Alamo, T., and Camacho, E. F., 2010, “Robust Tube-Based Mpc for Tracking of Constrained Linear Systems With Additive Disturbances,” J. Process Control, 20(3), pp. 248–260. [CrossRef]
Mercorelli, P., 2008, “Trajectory Tracking Using Mpc and a Velocity Observer for Flat Actuator Systems in Automotive Applications,” Industrial Electronics, ISIE 2008, IEEE Intl' Symposium, Cambridge, UK, June 30–July 2. [CrossRef]
Castillo, C. L., Moreno, W., and Valavanis, K. P., 2007, “Unmanned Helicopter Waypoint Trajectory Tracking Using Model Predictive Control,” IEEE Mediterranean Conf. on Control & Automation (MED'07), Athens, Greece, June 27–29.
Liu, Y., and Zhang, Y., 2007, “Control of Dynamic Keyhole Welding Process,” Automatica, 43, pp. 876–884. [CrossRef]
Zhang, Y., and Liu, Y., 2003, “Modeling and Control of Quasi-Keyhole Arc Welding Process,” Control Eng. Pract., 11, pp. 1401–1411. [CrossRef]
Zhang, Y., 2001, “Stochastic Modeling of Plasma Reflection During Keyhole Arc Welding,” Meas. Sci. Technol., 12, pp. 1964–1975. [CrossRef]
Li, X., Heusman, J., Kvidahl, L., Hoyt, P., and Zhang, Y., 2011, “Manual Keyhole Plasma Arc Welding With Application,” Weld. J., 90(12), pp. 258–264.
Zhang, Y. M., and Kovacevic, R., 1997, “Robust Control of Interval Plants: A Time Domain Method,” Control Theory Appl., IEE Proc., 144(4), pp. 347–353. [CrossRef]
Li, X., Shao, Z., and Zhang, Y., 2012, “Double Stage Plasma Arc Pipe Welding Process,” Weld. J., 91, pp. 346–353.
Li, X., Shao, Z., Zhang, Y., and Kvidahl, L., 2013, “Monitoring and Control of Penetration in Gtaw and Pipe Welding,” Weld. J., pp. 190–196.
Li, X., Zhang, Y., and Kvidahl, L., 2013, “Penetration Depth Monitoring and Control in Submerged Arc Welding,” Weld. J., 92(2), pp. S48–S56.
Lu, Y., Chen, S., Shi, Y., Li, X., Chen, J., Kvidahl, L., and Zhang, Y. M., 2014, “Double-Electrode Arc Welding Process: Principle, Variants, Control and Developments,” J. Manuf. Processes, pp. 93–108. [CrossRef]
Zhang, Y., 2008, Real-Time Weld Process Monitoring, Woodhead Publishing Ltd, Cambridge, UK.
Lu, W., and Zhang, Y. M., 2007, “Adaptive Non-Transferred Plasma Charge Sensor and Its Applications,” ASME J. Manuf. Sci. Eng., 129(1), pp. 180–189. [CrossRef]
Zhang, Y. M., Li, P. J., and Zhang, S. B., 2002, “Apparatus, System, and Related Method for Sensing a Characteristic of a Workpiece in an Automated Process,” Patent No. US 6437281 B1.
Dendy, R. O., 1995, Plasma Physics: An Introductory Course, Cambridge University, Cambridge, UK.
Camacho, E. F., and Alba, C. B., 2004, Model Predictive Control, Springer, New York. [CrossRef]
Li, X., 2010, “Model Predictive Control Over Manual Pipe Welding Process on Stainless Steel,” Ph.D thesis, University of Kentucky, Lexington, KY.
Aithal, S. M., Subramaniam, V. V., Pagan, J., and Richardson, R. W., 1998, “Numerical Model of a Transferred Plasma Arc,” J. Appl. Phys., 84, pp. 3506–3517. [CrossRef]


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Fig. 2

Block diagram of experimental platform

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Fig. 3

Innovative penetration control scheme

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Fig. 4

Process input/output signal for modeling test

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Fig. 5

Simulated control system block diagram

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Fig. 6

Simulated process output and desired trajectory

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Fig. 7

Comparison of process output, auxiliary variable and process input

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Fig. 8

Experiment result of welding current adjustment with MPC control algorithm

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Fig. 9

Experiment result of arc voltage trajectory tracking with MPC control algorithm

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Fig. 10

A typical pipe weld made by a novice welder using the developed control system



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