Fast Estimation of Environment's Stiffness for Bilateral Control Systems with Communication Delay
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- Yashiro Daisuke
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University
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- Yubai Kazuhiro
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University
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- Komada Satoshi
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University
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Description
<p>Communication delay between a master and a slave robot destabilizes a bilateral control system. Recent researches showed that an adaptive controller that dynamically determines the master's controller gain according to the stiffness of the contact object is effective in improving stability. As the stability depends on the convergence speed of the estimated stiffness, this paper proposes an algorithm that quickly estimates the stiffness. A polynomial interpolation and a Schmitt trigger are utilized for the estimation. The validity of the algorithm is verified by simulations and experiments. The convergence speed of the position and the force is improved by the proposed algorithm.</p>
Journal
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- IEEJ Journal of Industry Applications
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IEEJ Journal of Industry Applications 5 (6), 422-428, 2016
The Institute of Electrical Engineers of Japan
