Electromagnetic step-by-step wobble-type micromotor
AssigneeScuola Superiore Di Studi Universitari E Di Perfezionamento Sant'anna
InventorsCesare Stefanini, Paolo Dario, Maria Chiara Carrozza, Sarah De Cristofaro
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Abstract
An electromagnetic step-by-step wobbling micromotor comprises an inner component and an annular component being external to the inner one. The outer component may be a stator and the inner component a rotor, or vice versa. The inner component has three or more poles with a winding on each pole, and an external surface facing an internal surface of the outer component. During the operation of the micromotor each winding is powered. The external and internal surfaces have toothed surfaces. Each tooth has a peak radius which is different from the valley radius.
Claims12
An electromagnetic step-by-step wobble micromotor, comprising:
- an internal component of ferromagnetic material with three or more poles;
- an electrical winding on each pole of the internal component;
- and
- an annular component of ferromagnetic material external to the internal component, wherein:
- the internal component has an internal component external surface and the external component has an external component internal surface, the internal component external surface and the external component internal surface being adapted to directly contact along a portion thereof;
- the internal component external surface and the external component internal surface have a teethed configuration, each tooth having a peak radius of curvature and a valley radius of curvature, the peak radius of curvature being different from the valley radius of curvature;
- and
- during an operational mode of the electromagnetic step-by-step wobble micromotor each winding is in a powered condition.
Dependencies are inferred from the claim text.