Rotor structures of A.C. synchronous servo motor

Details Rotor structures of A.C. synchronous servo motor Rotor structures of A.C. synchronous servo motor

1990-05-22

1991-08-13

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310261, 310265, H02K 2114, H02K 122

Patent

active

050398970

ABSTRACT:
Provided is a rotor structure by which slot ripple is reduced so that an a.c. synchronous servo motor can achieve a smooth rotation. A rotor structure is provided in which two rotor elements (30, 30') are juxtaposed and brought out of registration in a circular position by an angle (.theta.) corresponding to a half wave length of a slot ripple wave caused in a rotor having a prior structure, thereby each slot ripple wave caused by each rotor element (30, 30') is cancelled out by the other.

REFERENCES:
patent: 4009406 (1977-02-01), Inariba
patent: 4012653 (1977-03-01), Shigeta et al.
patent: 4025810 (1977-05-01), Field
patent: 4406958 (1983-09-01), Palmero et al.
patent: 4629916 (1986-12-01), Oudet
patent: 4658167 (1987-04-01), Popov et al.
patent: 4697114 (1987-09-01), Amemiya et al.

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