Robust impedance control strategy for redundant manipulator

Naoki Oda, Hideki Ohta, Toshiyuki Murakami, Kouhei Ohnishi

Research output: Contribution to conferencePaperpeer-review

12 Citations (Scopus)

Abstract

In this paper, an impedance control strategy for redundant manipulator based on workspace observer is proposed. The calculation of impedance controller becomes more complicated as the number of the degree-of-freedom increases because pseudo inverse Jacobian matrix is generally used. To improve this problem, the disturbance observer is applied to each joint to eliminate the dynamical effects. This makes it easy to realize virtual impedance control in the joint space. Furthermore the workspace observer is applied to obtain the decoupled impedance response in the workspace. In this case, virtual impedance of each joint works as null space effect in the workspace response. This means that our approach realize the null space impedance effect without much effort to calculate the null space term (I - J+ J). The validity of the proposed method is confirmed by the experimental results in the 3link planar redundant manipulator.

Original languageEnglish
Pages1254-1259
Number of pages6
Publication statusPublished - 1995 Dec 1
EventProceedings of the 1995 IEEE 21st International Conference on Industrial Electronics, Control, and Instrumentation. Part 1 (of 2) - Orlando, FL, USA
Duration: 1995 Nov 61995 Nov 10

Other

OtherProceedings of the 1995 IEEE 21st International Conference on Industrial Electronics, Control, and Instrumentation. Part 1 (of 2)
CityOrlando, FL, USA
Period95/11/695/11/10

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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