Pushing operation by flexible manipulator taking environmental information into account

Seiichiro Katsura, Jun Suzuki, Kouhei Ohnishi

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Flexible arm is very useful for space robots because of its light weight and flexibility. Recently, a lot of studies for flexible manipulator have been reported. However, there is little study of pushing operation. Contact motion to unknown environment is difficult because environmental information should be observed on-line. In this paper, pushing operation by a flexible manipulator with position sensitive device (PSD) is proposed. Environmental information can be estimated more accurately by using PSD. Proposed method is composed of three modes; "Approaching", "Touching" and "Pushing" modes. In the approaching mode, resonance ratio control based on PSD is applied. Position control with suppression of vibration is obtained. Compliance control is installed in order to relax the contact force in the touching mode. Finally, two-step controller is proposed in the pushing mode. First, friction effect is identified by friction torque observer. Then pushing control with compensation of the stick-slip friction can be obtained based on the identification. It is possible to remove an object to a desired position exactly by the proposed method. This method can be expanded to a multi mass resonant system. The numerical and experimental results show viability of the proposed method.

Original languageEnglish
Pages141-146
Number of pages6
Publication statusPublished - 2004 Jul 12
EventProceedings - 8th IEEE International Workshop on Advanced Motion Control, AMC'04 - Kawasaki, Japan
Duration: 2004 Mar 252004 Mar 28

Other

OtherProceedings - 8th IEEE International Workshop on Advanced Motion Control, AMC'04
CountryJapan
CityKawasaki
Period04/3/2504/3/28

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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  • Cite this

    Katsura, S., Suzuki, J., & Ohnishi, K. (2004). Pushing operation by flexible manipulator taking environmental information into account. 141-146. Paper presented at Proceedings - 8th IEEE International Workshop on Advanced Motion Control, AMC'04, Kawasaki, Japan.