A Fuzzy Logic Concept Design for Improving the Angular Resolution of Permanent Magnet Stepper Machine

El Manâa Barhoumi, Kais Mhatli, Boujemâa Ben Salah
Ecole Nationale d’Ingénieurs de Tunis, Department of Electrical Engineering
BP. 37, le Belvédère, 1002 Tunis-Tunisia

Abstract: In this paper, is presented a fuzzy logic strategy in order to improve the angular resolution of the permanent magnet (PM) stepper actuator. Then, is described and discussed, in the first part, the conventional open loop microstepping technique which is realised by a Pulse Width Modulation. In the second part, a design of a new approach structured around the fuzzy logic controller is proposed. This control approach needs only the rotor position, which can be easily measured, to compute the control law. Finally, obtained simulation results are presented and discussed. These results confirm the efficiency of the proposed controller for the considerable improvement of the static and dynamic performances.

Keywords: Fuzzy logic controller, Microstepping, Permanent magnet stepper motor, Incremental torque, positioning error.

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CITE THIS PAPER AS:
El Manâa BARHOUMI, Kais MHATLI, Boujemâa BEN SALAH, A Fuzzy Logic Concept Design or Improving the Angular Resolution of Permanent Magnet Stepper Machine, Studies in Informatics and Control, ISSN 1220-1766, vol. 17 (3), pp. 285-296, 2008.