Variable reluctance stepper motor

Details Variable reluctance stepper motor Variable reluctance stepper motor

1974-06-05

1977-09-13

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 80, 310 83, 310181, H02K 3700

Patent

active

040485315

ABSTRACT:
A variable reluctance stepper motor includes an energizable first stator cooperative with a first rotor for imparting incremental motion to the rotor and a second stator generating a permanent magnetic field and a second rotor cooperative therewith to restrain the rotor from drift rotation upon deenergization of the first stator. The second stator-second rotor combination defines positions of minimum magnetic reluctance radially angularly coincident with those provided by the first stator-first rotor combination. A lead screw is displaced rectilinearly to provide a linear output according with rotor shaft rotation.

REFERENCES:
patent: 2548731 (1951-04-01), Lehde
patent: 3356874 (1967-12-01), Chiapparelli et al.
patent: 3510699 (1970-05-01), Frederickson
patent: 3560774 (1971-02-01), Reeves
patent: 3783313 (1974-01-01), Mathur

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