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Force-reflecting teleoperators in which the remote environment is kinesthetically coupled to the operator can considerably increase task performance. However, wave-variable-based controllers can support the stable operation of force-reflecting teleoperators under arbitrary communication delays. Transparency in such systems is compromised in order to maintain stability. In this paper, we present a new controller for bilateral teleoperators based on the wave variable control method which provides superior force tracking performance compared to the traditional wave-variable-based method. Additionally, this method also improves the phase delay induced by the latency in the communication network. Both simulation and experimental results confirm the performance of this new controller.
Date of Conference: 22-26 Sept. 2008