IMPROVING PERFORMANCE IN SINGLE-LINK FLEXIBLE MANIPULATOR USING HYBRID LEARNING CONTROL

Authors

  • M. Z. Md Zain M. Z. Md Zain Department ofAutomatic Control and Systems Engineering, The University of Sheffield, Mappin Street, Sheffield, UK.
  • M. O. Tokhi M. O. Tokhi Department ofAutomatic Control and Systems Engineering, The University of Sheffield, Mappin Street, Sheffield, UK.
  • M. Mailah M. Mailah Faculty ofMechanical Engineering. Department of Applied Mechanics, Univcrsiti Teknologi Malaysia. 81310 Johor Bahru, Johor, Malaysia.
  • Z.Mohamed Z.Mohamed Faculty of Electrical Engineering, Department of Mechatronic and Robotics, Universiti Teknologi Malaysia, 81310 Johor Bahru,Johor, Malaysia.

Keywords:

Iterative learning control, PD control, PID control, Input shaping, Flexible manipulator, Vibration control.

Abstract

An iterative learning control method for a single-link flexi ble manipulator is proposed to achieve precise tracking control and end-point vibration suppression ofthe system. The learning is done in a feedback configuration Wilh hybrid control and the learning law updates the feedforward input from the error of the previous trial. The dynamic model of the flexible manipulator is derived using the finite element method. Initially, a collocated proporlional-derivative (PD) controller utilizing hub-angle and hub-velocity feedback is developed for control of rigid-body motion of the system. The controller is then extended to incorporate a non-collocated proportional-integral-derivative (PlD) controller and a feedforward controller based on input shaping techniques for control of vibration (flexible motion) of the system. Simulation results of the response of the manipulator with the controllers are presented in the time and frequency domains. The performance of the hybrid iterative learning control scheme is assessed in terms of input tracking and level of vibration reduction in comparison to a conventionally designed collocated PD and non-collocated PID control schemes.

References

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Published

2018-04-25

How to Cite

M. Z. Md Zain, M. Z. M. Z., M. O. Tokhi, M. O. T., M. Mailah, M. M., & Z.Mohamed, Z. (2018). IMPROVING PERFORMANCE IN SINGLE-LINK FLEXIBLE MANIPULATOR USING HYBRID LEARNING CONTROL. Jurnal Mekanikal, 18(2). Retrieved from https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/205

Issue

Section

Mechanical

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