CALCULATION OF THE PULL-OUT TORQUE OF HYBRID STEPPING MOTORS IN THE HALF-STEP MODE |
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| Authors: | A P RUSSELL I E D PICKUP |
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| Affiliation: | 1. Qyx Division of Exxon Enterprises , Lionville, Pennsylvania;2. Electrical Engineering Laboratories The University of Manchester , Manchester, England |
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| Abstract: | ABSTRACT A method is described for predicting the pull-out torque/speed characteristics of hybrid stepping motors operating in the half-step excitation mode. The analysis assumes initially a linear magnetic circuit in order to derive an expression for the pull-out torque. Subsequently, the important effect of magnetic non-linearity is introduced into the calculation method by appropriate adjustment of the flux-linkage coefficients using an iterative computational routine. A comparison of experimental and predicted results is presented for a commercial 1.8°(200 step/revolution) stepping motor |
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