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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2014

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Infinite time horizon optimal current control of a stepper motor exploiting a finite element model

Bernat J., Stępień S., Stranz A., Szymański G., Sykulski J. K.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2014

Vol. 62, nr 4

835--841

An optimal control theory based method is presented aiming at minimizing the energy delivered from source and the power loss in a stepper motor circuit. A linear quadratic current regulator with an infinite time horizon is employed and its appropriateness for this type of a problem explained. With the purpose of improving the accuracy of the control system, the self and mutual inductances of windings are calculated using a finite element model. The numerically computed results are verified experimentally.