Energy-based control of a passive haptic device

Changhyun Cho, Jae-Bok Song, Munsang Kim, Chang Soon Hwang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, we propose an energy-based control method of a passive haptic device equipped with electric brakes. Unstable behavior is observed in the passive haptic system due to time delay mainly arising from the slow update rate of the virtual environment. From the passive FME (Force Manipulability Ellipsoid) analysis, a so-called direct force control method is proposed in this paper. Its gain is computed by force analysis at the end-effector of a passive haptic device so that the component of a resultant force at the end-effector causing a pullback motion becomes zero. However, this direct force control scheme requires precise measurement of the hand force input by a human operator. We also propose the indirect force control scheme in which the gain in the direct force control scheme is computed using the notion of passivity without resorting to the high precision force sensor. For the experiments a 2-link passive haptic system was developed in this research. Various experiments have been conducted to investigate the validity of both direct and indirect force control schemes proposed in this paper. It is shown that both schemes produce satisfactory performance in the force display for the wall-following task on the virtual wall.

Original languageEnglish
Title of host publicationProceedings - IEEE International Conference on Robotics and Automation
Pages292-297
Number of pages6
Volume2004
Edition1
Publication statusPublished - 2004
EventProceedings- 2004 IEEE International Conference on Robotics and Automation - New Orleans, LA, United States
Duration: 2004 Apr 262004 May 1

Other

OtherProceedings- 2004 IEEE International Conference on Robotics and Automation
CountryUnited States
CityNew Orleans, LA
Period04/4/2604/5/1

Fingerprint

Force control
End effectors
Electric brakes
Virtual reality
Time delay
Experiments
Display devices
Sensors

Keywords

  • Direct force control
  • Indirect force control
  • Passive haptic device
  • Passivity

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering

Cite this

Cho, C., Song, J-B., Kim, M., & Hwang, C. S. (2004). Energy-based control of a passive haptic device. In Proceedings - IEEE International Conference on Robotics and Automation (1 ed., Vol. 2004, pp. 292-297)

Energy-based control of a passive haptic device. / Cho, Changhyun; Song, Jae-Bok; Kim, Munsang; Hwang, Chang Soon.

Proceedings - IEEE International Conference on Robotics and Automation. Vol. 2004 1. ed. 2004. p. 292-297.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cho, C, Song, J-B, Kim, M & Hwang, CS 2004, Energy-based control of a passive haptic device. in Proceedings - IEEE International Conference on Robotics and Automation. 1 edn, vol. 2004, pp. 292-297, Proceedings- 2004 IEEE International Conference on Robotics and Automation, New Orleans, LA, United States, 04/4/26.
Cho C, Song J-B, Kim M, Hwang CS. Energy-based control of a passive haptic device. In Proceedings - IEEE International Conference on Robotics and Automation. 1 ed. Vol. 2004. 2004. p. 292-297
Cho, Changhyun ; Song, Jae-Bok ; Kim, Munsang ; Hwang, Chang Soon. / Energy-based control of a passive haptic device. Proceedings - IEEE International Conference on Robotics and Automation. Vol. 2004 1. ed. 2004. pp. 292-297
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