Online Learning of Virtual Impedance Parameters in Non-Contact Impedance Control Using Neural Networks

Tsuji Toshio

Terauchi Mutsuhiro

Tanaka Yoshiyuki

IEEE Transactions on Systems, Man, and Cybernetics-Part B: Cybernetics

Impedance control is one of the most effective methods forcontrolling the interaction between a manipulator and a task environment.In conventional impedance control methods, however, the manipulatorcannot be controlled until the end-effector contacts task environments. Anoncontact impedance control method has been proposed to resolve such aproblem. This method on only can regulate the end-point impedance, butalso the virtual impedance that works between the manipulator and theenvironment by using visual information. This paper proposes a learningmethod using neural networks to regulate the virtual impedance parametersaccording to a given task. The validity of the proposed method wasverified through computer simulations and experiments with a multijointrobotic manipulator.

Impact control

impedance control

noncontact impedance

neural networks (NN)

robot manipulator

Mechanical engineering [ 530 ]

eng

IEEE

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[ISSN] 1083-4419

[DOI] http://dx.doi.org/10.1109/TSMCB.2004.829133 isVersionOf