Analysis and experimental validation of force bandwidth for force control

Seiichiro Katsura, Yuichi Matsumoto, Kouhei Ohnishi

Research output: Contribution to conferencePaper

33 Citations (Scopus)

Abstract

Controlling robots in contact with environment is the important problem in industry applications. In the conventional force control, great many researches have paid attention to develop novel force control systems and implemented force sensors to detect external force. Narrow bandwidth of force sensor has a big influence on the force control system. In order to solve the instability in force control, the velocity feedback gain is enlarged. The system becomes unstable with small velocity feedback gain, and robot's response becomes slow with large one. Since there is trade-off between stability and responsivity, it is thought that force control by robots is difficult. As a result, it is trapped in a vicious circle of narrowing further the frequency band which a force sensor has. Force control is attainable by the construction of the easiest force control architecture by feedback of observer. It is possible to set any bandwidth due to the sampling time and observer gain. This paper shows that bandwidth of force sensing is very important for contact motion control. Sensor-less force control is the one of the fundamental techniques for evolution of human-cooperating robot. The numerical and experimental results show viability of the proposed method.

Original languageEnglish
Pages796-801
Number of pages6
Publication statusPublished - 2003 Dec 1
Event2003 IEEE International Conference on Industrial Technology, ICIT - Proceedings - Maribor, Slovenia
Duration: 2003 Dec 102003 Dec 12

Other

Other2003 IEEE International Conference on Industrial Technology, ICIT - Proceedings
CountrySlovenia
CityMaribor
Period03/12/1003/12/12

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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    Katsura, S., Matsumoto, Y., & Ohnishi, K. (2003). Analysis and experimental validation of force bandwidth for force control. 796-801. Paper presented at 2003 IEEE International Conference on Industrial Technology, ICIT - Proceedings, Maribor, Slovenia.