DOI QR코드

DOI QR Code

Infeed Control Algorithm of Sorting System Using Modified Trapezoidal Velocity Profiles

  • Kim, Ki Hak (IT Convergence Technology Research Laboratory, ETRI) ;
  • Choi, Yong Hoon (IT Convergence Technology Research Laboratory, ETRI) ;
  • Jung, Hoon (IT Convergence Technology Research Laboratory, ETRI)
  • Received : 2014.08.07
  • Accepted : 2015.02.06
  • Published : 2015.04.01

Abstract

This paper applies acceleration/deceleration control-based velocity profiles to an infeed control algorithm for a cross-belt-type sorting system to improve the accuracy and performance of the system's infeed. The velocity profiles are of a trapezoidal shape and often have to be modified to ensure that parcels correctly synchronize with their intended carriers. Under the proposed method, an infeed line can handle up to 5,600 items/h, which indicates a 40% increase in performance in comparison with its existing handling rate of 4,000 items/h. This improvement in performance may lead to a reduction in the number of infeed lines required in a sorting system. The proposed infeed control algorithm is applied to a cross-belt-type sorting system (model name: SCS 1500) manufactured by Vanderlande Industries.

Keywords

References

  1. J.U. Cho and J.W. Jeon, "A Motion-Control Chip to Generate Velocity Profiles of Desired Characteristics," ETRI J., vol. 27, no. 5, Oct. 2005, pp. 563-568. https://doi.org/10.4218/etrij.05.0905.0030
  2. H.Z. Li et al., "A New Motion Control Approach for Jerk and Transient Vibration Suppression," IEEE Int. Conf. Ind. Informat., Singapore, Aug. 16-18, 2006, pp. 676-681.
  3. S.-Y. Lee et al., "S-Curve Profile Switching Method Using Fuzzy System for Position Control of DC Motor Under Uncertain Load," IEEE Int. Conf. Contr., Autom. Syst., Jeju, Rep. of Korea, Oct. 17-21, 2012, pp. 91-95.
  4. F.-J. Lin, K.-K. Shyu, and C.-H. Lin, "Incremental Motion Control of Linear Synchronous Motor," IEEE Trans. Aerosp. Electron. Syst., vol. 38, no. 3, July 2002, pp. 1011-1022. https://doi.org/10.1109/TAES.2002.1039417
  5. H. Li et al., "Design of Global Sliding-Mode Controlled AC Servo Controller Based on Exponential Acceleration/Deceleration Algorithm," Int. Conf. Mechatronics Autom., Xi'an, China, Aug. 4-7, 2010, pp. 1507-1511.
  6. M. Haddad, W. Khalil, and H.E. Lehtihet, "Trajectory Planning of Unicycle Mobile Robots with a Trapezoidal-Velocity Constraint," IEEE Trans. Robot., vol. 26, no. 5, Oct. 2010, pp. 954-962. https://doi.org/10.1109/TRO.2010.2062090
  7. K.-H. Rew and K.-S. Kim, "A Closed-Form Solution to Asymmetric Motion Profile Allowing Acceleration Manipulation," IEEE Trans. Ind. Electron., vol. 57, no. 7, July 2010, pp. 2499-2506. https://doi.org/10.1109/TIE.2009.2036032
  8. Z. Rymansaib, P. Iravani, and M.N. Sahinkaya, "Exponential Trajectory Generation for Point to Point Motions," IEEE/ASME Int. Conf. Adv. Intell. Mechatronics, Wollongong, Australia, July 9-12, 2013, pp. 906-911.
  9. Y. Wang, J. Li, and Z. Li, "An Advanced Velocity Profiles Optimizes Approach for CNC Machine Tools," Int. Conf. Digital Manuf. Autom., Changsha, China, Dec. 18-20, 2010, pp. 172-175.
  10. U. Naoki, H. Yuta, and S. Shigenori, "Residual Vibration Suppression and Energy Saving in Industrial Machines Using a Trapezoidal Velocity Profile," American Contr. Conf., Portland, OR, USA, June 4-6, 2014, pp. 323-328.
  11. T. Chettibi et al., "Suboptimal Trajectory Generation for Industrial Robots Using Trapezoidal Velocity Profiles," IEEE/RSJ Int. Conf. Intell. Robots Syst., Beijing, China, Oct. 2006, pp. 729-735.
  12. S. Thirachai et al., "Trapezoidal Velocity Trajectory Generator with Speed Override Capability," Int. Conf. Contr. Autom. Syst., Ilsan, Rep. of Korea, Oct. 27-30, 2010, pp. 1468-1472.
  13. SCS 1500 by Vanderlande Industries, 2012. Accessed Feb. 15, 2012. http://www.vanderlande.com