Modelling and identification of a six axes industrial robot


Waiboer, Rob and Aarts, Ronald and Jonker, Ben (2005) Modelling and identification of a six axes industrial robot. In: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE, September 24-28, 2005, Long Beach, California, USA (pp. pp. 1-10).

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Abstract:This paper deals with the modelling and identification of a six axes industrial St ¨aubli RX90 robot. A non-linear finite element method is used to generate the dynamic equations of motion in a form suitable for both simulation and identification. The latter requires that the equations of motion are linear in the inertia parameters. Joint friction is described by a friction model that describes the friction behaviour in the full velocity range necessary for identification. Experimental parameter identification by means of linear least squares techniques showed to be very suited for identification of the unknown parameters, provided that the problem is properly scaled and that the influence of disturbances is sufficiently analysed and managed. An analysis of the least squares problem by means of a singular value decomposition is preferred as it not only solves the problem of rank deficiency, but it also can correctly deal with measurement noise and unmodelled dynamics.
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Engineering Technology (CTW)
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