An event-based vibration control for a two-link flexible robotic arm

Numerical and experimental observations

Abdullah Özer, S. Eren Semercigil

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Flexible robot manipulators have numerous advantages over their rigid counterparts. They have increased payload-to-weight ratio, they run at higher speeds, use less energy and smaller actuators, and they are safer during interaction with their environments. On the other hand, light design combined with external effects result in components which can oscillate with excessive amplitudes. These oscillations cause deviation from the desired path and long idle periods between tasks in order to perform the intended operation safely and accurately. This paper is on an investigation into the effectiveness of a vibration control technique for a two-link flexible robotic arm. Variable stiffness control (VSC) technique is used to control the excessive oscillations. Owing to its dissipative nature, the technique is stable, it is relatively insensitive to significant parameter changes and suitable to be implemented on existing robots. This research considers that the source of the flexibility is either the joints or the links or both. Simulation results of the response of the arm are presented to show the versatility of the proposed control technique. Experiments are performed on a laboratory prototype and the results are presented to test the validity of simulations.

Original languageEnglish
Pages (from-to)375-394
Number of pages20
JournalJournal of Sound and Vibration
Volume313
Issue number3-5
DOIs
Publication statusPublished - Jun 17 2008

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robot arms
Robotic arms
Vibration control
vibration
robots
Robots
oscillations
Manipulators
Actuators
versatility
payloads
Stiffness
manipulators
stiffness
flexibility
simulation
actuators
prototypes
high speed
deviation

ASJC Scopus subject areas

  • Engineering(all)
  • Mechanical Engineering

Cite this

An event-based vibration control for a two-link flexible robotic arm : Numerical and experimental observations. / Özer, Abdullah; Eren Semercigil, S.

In: Journal of Sound and Vibration, Vol. 313, No. 3-5, 17.06.2008, p. 375-394.

Research output: Contribution to journalArticle

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