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7. Various industrialized structures
There are generally three basic structures of the open magnetic circuit motor:
linear motor (one mechanical degree of freedom) ;
linear rotation (two mechanical degrees of freedom) ;
spherical (three or more degrees of freedom).
The motor with short double armature and non-magnetic armature, most often operating as an asynchronous converter, forms the most general class of linear machines: figure 18 shows an industrial series of this type of machine. Figure
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Conversion of electrical energy
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Various industrialized structures
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The Ultimate Scientific and Technical Reference