The hybrid, stepper motor are particularly well suited for motorization requirement in space mechanism. These applications are characterised by accurate positioning and slow speed or quasi-steady state, and are usually based on open loop control. Hybrid Stepper Motor driving is usually easy. A high speed stepper motor size 35 was developed to satisfy this requirement. The first step consisted in the study and theoretical prediction of performances. In order to increase the maximum speed, the back electromotive force (Back E.M.F) had to be reduced, by actions on the iron losses and windings definition in the magnetic circuit. The second step consisted in laboratory tests, to confirm that the new stepper motor is able to perform in open loop 100 rotations in 8 seconds, with a repositioning precision better than 1mrad. Further developments include a second high speed stepper motor size 27, that has confirmed the results obtained in the new definition.
High-speed stepper motor for mechanism
2003
7 Seiten
Conference paper
English
High-Speed Stepper Motor for Mechanism
British Library Conference Proceedings | 2003
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