Title: Calibrating force vs. position control applied to a milling operation using two hybrid automata

Authors: P. Charbonnaud, F.J. Carrillo, D. Ladeveze

Addresses: Laboratoire Genie de Production, Ecole Nationale d'Ingenieurs de Tarbes, BP 1629, 65016 Tarbes Cedex, France. ' Laboratoire Genie de Production, Ecole Nationale d'Ingenieurs de Tarbes, BP 1629, 65016 Tarbes Cedex, France. ' CACG, Chemin de l'Alette, BP 449, 65004 Tarbes Cedex, France

Abstract: This paper proposes a restructuring strategy for detecting the process operating mode and for calibrating the control law according to process objectives which are pre-defined at management level. An active accommodation of the process is based on controller restructuring when the objective has to change due to a loss of process performance, whilst a passive accommodation is based on a supervised robust control method. The restructuring strategy is an active accommodation method of control law according to some operating modes. The application concerns a milling operation, the proposed model of which makes the monitoring of the cutting process possible. The regulation depends on actions resulting from the detection-accommodation additional loop. This loop is specified by two hybrid automata. The simulation results show the interest and the feasibility of the method.

Keywords: control accommodation; detection; milling; switching control; hybrid automaton; force control; position control; controller restructuring; process monitoring; modelling.

DOI: 10.1504/IJCAET.2009.022784

International Journal of Computer Aided Engineering and Technology, 2009 Vol.1 No.2, pp.158 - 172

Published online: 26 Jan 2009 *

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