Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Force Control of Robot Fingers using Series Elastic Actuators

직렬 탄성 액츄에이터 기반의 로봇 손가락의 힘 제어

  • Received : 2012.07.02
  • Accepted : 2012.09.24
  • Published : 2012.10.01
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Abstract

Robot hands capable of grasping or handling various objects are important for service robots to effectively aid humans. In particular, controlling a contact force and providing a compliant motion are essential when the hand is in contact with objects. Many dexterous robot hands equipped with force/torque sensors have been developed to perform force control, but they suffer from the complexity of control and high cost. In this paper, a low-cost robot hand based on SEA (Series Elastic Actuator), which is composed of compression spring, stretch sensor, and wire, is proposed. The grasping force can be estimated by measuring the compression length of spring, which would allow the hand to perform force control. A series of experimentations are carried out to verify the performance of force control of the proposed robot hand, and it is shown that it can successfully control the contact force without any additional force/torque sensors.

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References

  1. M. Grebenstein, H. Liu, and G. Hirzinger, "DLR-Hand II: next generation of a dexterous robot hand," IEEE Int. Conf. on Robotics and Automation, pp. 109-114, 2001.
  2. H. Iwata, H. Liu, and S. Sugano, "Design of human symbiotic robot TWENDY-ONE," IEEE Int. Conf. on Robotics and Automation, pp. 580-586, 2009.
  3. J. B. Song and B. S. Kim, "Variable stiffness actuator for compliant motion," Korea Robotics Society Review (in Korean), vol. 8, no. 1, pp. 3-11, 2011.
  4. www.mekabot.com, "Meka Robotics."
  5. G. A. Pratt and M. M. Williamson, "Series elastic actuators," IEEE Int. Conf. on Intelligent Robots and Systems, vol. 1, pp. 399-406, 1995.
  6. S. Y. Lee, J. B. Song, and B. S. Kim, "3-DOF compliant robot hand capable of grasping various objects," Conf. on Korean Society for Precision Engineering (in Korean), vol. 11, pp. 247- 248, 2011.
  7. S. I. Ahn, Y. H. Oh, and S. J. Kwon, "Design of a humanoid robot hand by mimicking human hand's motion and appearance," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 14, pp. 62-69, 2008. https://doi.org/10.5302/J.ICROS.2008.14.1.062
  8. A. T. Miller, "Automatic grasp planning using shape primitives," IEEE Int. Conf. on Intelligent Robots and Systems, vol. 2, pp. 1824-1829, 2003.
  9. M. R. Cutkosky, "On grasp choice, grasp models, and the design of hands for manufacturing tasks," IEEE Trans. on Robotics and Automation, vol. 5, pp. 269-279, 1989. https://doi.org/10.1109/70.34763
  10. B. J. Choi, S. H. Lee, S. C. Kang, and H. R. Choi, "Development of anthropomorphic robot hand with tactile sensor: SKKU hand II," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 12, pp. 594-599, 2006.