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An axial force controller with delay compensation for the friction stir welding process

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Abstract

Friction stir welding (FSW) is a promising welding technology and is being extensively researched because it can produce high-quality joints. In the welding process, due to improper clamping, deformation of back support and other process variations, the axial force can vary significantly and produce welding defects. To solve this problem, a feedback controller of FSW axial force is desirable. However, time-delay, which widely exists within the FSW systems, may degrade the controller effect and make the system unstable. To regulate the axial force and compensate the time delay, this paper designs an axial force controller for FSW system with delay. At first, by utilizing a time delay compensation scheme, FSW systems with delayed control actions is transformed into standard differential equations without time delay terms. Then, an axial force controller is designed based on the linear-quadratic regulator (LQR) technique. Since the time delay is incorporated in the system model throughout the whole controller design process, the system performance and stability are assured and the control system is also simplified. Utilizing the LQR technique, aspects of system dynamic properties and simplicity are considered simultaneously. Experimental validations were carried out on a FSW platform. The experimental results demonstrate that the time delay is compensated effectively. The controller maintains the constant axial force and shows desirable dynamic behavior, even when the disturbance is encountered during the welding process.

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References

  1. Thomas WM, Nicholas ED, Needham JC, Murch MG, Temple-Smith P, Dawes CJ (1991) Friction stir butt welding. GB patent no. 9125978.8

  2. Heidarzadeh A, Saeid T (2013) Prediction of mechanical properties in friction stir welds of pure copper. Mater Des 52:1077–1087

    Article  Google Scholar 

  3. Ye F, Fujii H, Tsumura T, Nakata K (2006) Friction stir welding of Inconel alloy 600. J Mater Sci 41(16):5376–5379

    Article  Google Scholar 

  4. Rajakumar S, Muralidharan C, Balasubramanian V (2011) Influence of friction stir welding process and tool parameters on strength properties of AA7075-T6 aluminum alloy joints. Mater Des 32(2):535–549

    Article  Google Scholar 

  5. Rose AR, Manisekar K, Balasubramanian V (2011) Effect of axial force on microstructure and tensile properties of friction stir welded AZ61A magnesium alloy. Trans Nonferrous Metals Soc China 21(5):974–984

    Article  Google Scholar 

  6. Rajakumar S, Balasubramanian V (2012) Establishing relationships between mechanical properties of aluminium alloys and optimised friction stir welding process parameters. Mater Des 40:17–35

    Article  Google Scholar 

  7. Longhurst WR, Strauss AM, Cook GE, Fleming P (2010) Torque control of friction stir welding for manufacturing and automation. Int J Adv Manuf Technol 51(9):905–913

    Article  Google Scholar 

  8. Davis TA, Ngo PD, Shin YC (2012) Multi-level fuzzy control of friction stir welding power. Int J Adv Manuf Technol 59:559–567

    Article  Google Scholar 

  9. Backer JD, Bolmsjö G, Christiansson AK (2014) Temperature control of robotic friction stir welding using the thermoelectric effect. Int J Adv Manuf Technol 70:375–383

    Article  Google Scholar 

  10. Rajashekar R, Rajaprakash BM (2016) Development of a model for friction stir weld quality assessment using machine vision and acoustic emission techniques. J Mater Process Technol 229:265–274

    Article  Google Scholar 

  11. Prater T, Gibson B, Cox C, Cook GE, Strauss A, Longhurst W (2015) Evaluation of torque as a means of in-process sensing of tool wear in friction stir welding of metal matrix composites. Ind Robot 42(3):192–199

    Article  Google Scholar 

  12. Senthilraja R, Naveen Sait A (2015) Modeling and parametric optimization of friction stir welding for magnesium AZ91D alloys using factorial design. Int J Appl Eng Res 10(4):10253–10264

    Google Scholar 

  13. Fehrenbacher A, Duffie NA, Ferrier NJ, Pfefferkorn FE, Zinn MR (2014) Effects of tool-workpiece interface temperature on weld quality and quality improvements through temperature control in friction stir welding. Int J Adv Manuf Technol 71(1–4):165–179

    Article  Google Scholar 

  14. Lakshminarayanan AK, Balasubramanian V (2008) Process parameters optimization for friction stir welding of RDE-40 aluminium alloy using Taguchi technique. Trans Nonferrous Metals Soc China (Engl Ed) 18(3):548–554

    Article  Google Scholar 

  15. Balaji S, Mahapatra MM (2013) Experimental study and modeling of friction stir welding process to produce optimized AA2219 butt welds for aerospace application. Proc Inst Mech Eng B J Eng Manuf 227(1):132–143

    Article  Google Scholar 

  16. Zäh MF, Eireiner D (2004) Friction stir welding using NC milling machines. Weld Cut 56(4):220–223

    Google Scholar 

  17. Cook GE, Smartt HB, Mitchell JE, Strauss AM, Crawford R (2003) Controlling robotic friction stir welding. Weld J 82(6):28–34

    Google Scholar 

  18. Shi J, Wang YH, Zhang G, Ding H (2013) Optimal design of 3-DOF PKM module for friction stir welding. Int J Adv Manuf Technol 66:1879–1889

    Article  Google Scholar 

  19. Longhurst WR, Strauss AM, Cook GE, Cox CD, Hendricks CE, Gibson BT, Dawant YS (2010) Investigation of force-controlled friction stir welding for manufacturing and automation. Proc Inst Mech Eng B J Eng Manuf 224(6):937–949

    Article  Google Scholar 

  20. Smith C (2004) Robotic friction stir welding using a standard industrial robot, Kei Kinzoku Yosetsu. J Light Metals Weld Construction 42(3):40–41

    Google Scholar 

  21. Von Strombeck A, Schilling C, Dos Santos JF (2000) Robotic Friction Stir welding: tool, technology and applications. Proceedings of the Second International Symposium of Friction Stir Welding, Gotherburg, pp 26–28

    Google Scholar 

  22. Zhao X, Kalya P, Landers RG, Krishnamurthy K (2008) Design and implementation of nonlinear force controllers for friction stir welding processes. J Manuf Sci Eng 130(6):0610111–06101110

    Article  Google Scholar 

  23. Oakes T, Landers RG (2009) Design and implementation of a general tracking controller for friction stir welding processes. Proceedings of the American Control Conference, St. Louis, pp 5576–5581

    Google Scholar 

  24. Davis TA, Shin YC, Yao B (2011) Observer-based adaptive robust control of friction stir welding axial force. IEEE/ASME Trans Mech 16(6):1032–1039

    Article  Google Scholar 

  25. Fehrenbacher A, Smith CB, Duffie NA, Ferrier NJ, Pfefferkorn FE, Zinn MR (2014) Combined temperature and force control for robotic friction stir welding. J Manuf Sci Eng 136(2):21007

    Article  Google Scholar 

  26. Sua H, Wu CS, Bachmann M, Rethmeier M (2015) Numerical modeling for the effect of pin profiles on thermal and material flow characteristics in friction stir welding. Mater Des 77:114–125

    Article  Google Scholar 

  27. Zhao X, Kalya P, Landers RG, Krishnamurthy K (2009) Empirical dynamic modeling of friction stir welding processes. J Manuf Sci Eng 131(2):0210011–0210019

    Article  Google Scholar 

  28. Fathi A, Khajepour A, Durali M, Toyserkani E (2008) Geometry control of the deposited layer in a nonplanar laser cladding process using a variable structure controller. J Manuf Sci Eng 130(3):031003

    Article  Google Scholar 

  29. Artstein Z (1982) Linear systems with delayed controls: a compensation. Autom Control 27(4):869–879

    Article  MathSciNet  MATH  Google Scholar 

  30. Du J (2008) The basis of control engineering. Tsinghua University Press, Beijing

    Google Scholar 

  31. Zhao G (2009) Modern control theory. Chinese Machine Press, Beijing

    Google Scholar 

  32. Choi JW, Seo YB (1999) LQR design with eigenstructure assignment capability [and application to aircraft flight control]. Aerosp Electron Syst 35(2):700–708

    Article  MathSciNet  Google Scholar 

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Authors and Affiliations

  1. State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Rd., Shanghai, 200240, China

    Sheng Zhao, Qingzhen Bi & Yuhan Wang

Authors
  1. Sheng Zhao
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  2. Qingzhen Bi
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  3. Yuhan Wang
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Correspondence to Yuhan Wang.

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Zhao, S., Bi, Q. & Wang, Y. An axial force controller with delay compensation for the friction stir welding process. Int J Adv Manuf Technol 85, 2623–2638 (2016). https://doi.org/10.1007/s00170-015-8096-9

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  • DOI: https://doi.org/10.1007/s00170-015-8096-9

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