| 摘要 |
PCT No. PCT/FI88/00025 Sec. 371 Date Aug. 16, 1989 Sec. 102(e) Date Aug. 16, 1989 PCT Filed Feb. 18, 1988 PCT Pub. No. WO88/06376 PCT Pub. Date Aug. 25, 1988.The invention relates to an electric motor comprising a rotor (1), a stator (2) and at least two pole pairs. One particularly preferred application of the electric motor according to the invention is small-size accurate servomotors of high capacity. At present the feed back information required by servomotors is generally obtained from at least partially separate transduced means attached to the servomotor, such as an optical or magnetic coder, a tachogenerator or resolver. A drawback of these known solutions is mainly that the volume and weight of the motors is high. This problem is eliminated in the motor according to the invention by providing it with an integral resolver so that primary windings (4a, 4b) of the resolver is arranged in the rotor (1) of the motor, and that secondary windings (11a, 11b) of the resolver are wound round the stator (2) of the motor in such a manner that the winding wire goes alternately inside and outside the stator.
|
