Shenzhen Academy of Aerospace Technology

Tencent Technology (shenzhen) Company Limited

Xiang Kong

Tiecai Li

Zhaoyong Zhou

Yamei Qi

Tong Zhang

Zhaopeng Tu

Shuming Shi

Weilong Lan

Pinghua Tang

Feipeng Xu

A translation model based training method is provided for a computer device. The method includes inputting a source sentence to a translation model, to obtain a target sentence outputted by the translation model; determining a fidelity of the target sentence to the source sentence; using the target sentence and a reference sentence as input of a discriminator model, using the fidelity as output of the discriminator model, and training the discriminator model on a performance of calculating a similarity between the target sentence and the reference sentence; outputting the similarity by using the discriminator model; and using the source sentence as input of the translation model, using the target sentence as output of the translation model, and using the similarity as a weight coefficient, and training the translation model on a performance of outputting the corresponding target sentence according to the input source sentence.

Translation model based training method and translation method, computer device, and storage medium

The present invention relates to a control technology of a three-phase DC motor. In order to resolve a problem in the prior art that the good current closed-loop control has not been realized on a three-phase square-wave brushless DC motor, the present invention provides a brushless DC motor control system, wherein cathodes of freewheel diodes D, Dand Dare independent of input terminals of their respective switch tubes and connected in parallel to a sampling coil L, and anodes of freewheel diodes D, Dand Dare independent of output terminals of their respective switch tubes and connected in parallel to a sampling coil L. The present invention can use a single resultant current sensor to completely and continuously sample the three-phase current existing during the motor is on and performs current freewheel, and perform the continuous closed-loop control on the three-phase current with a single current closed-loop regulator, thereby increasing dynamic and static indexes of the motor significantly.

Brushless DC motor control system

This invention relates to a three-phase square-wave permanent magnet brushless DC motor for solving problems of the existing square-wave permanent Magnet Motor and sine-wave permanent magnet motor. In this invention, the number 2P of magnetic poles on the said rotor core is 8; the slot number Z of the said stator core is 12, accordingly there are 12 teeth, including three big teeth, three medium teeth and six small teeth; the ratio of their mechanical angles is 50&#xb0; (&#xb1;5&#xb0;) for big teeth: 40&#xb0; (&#xb1;5&#xb0;) for medium teeth: 15&#xb0; (&#xb1;5&#xb0;) for small teeth, and the sum of the mechanical angles of one big tooth, one medium tooth and two small teeth must be 120&#xb0;. Three-phase concentrated windings are respectively wound on the big teeth and the medium teeth, in which there are only two concentrated windings for each phase, thus there are only 6 concentrated windings for the three-phase motor. With driven by three-phase square-wave current, the said motor can produce a smooth torque which ripple index corresponds to that of the sine-wave permanent magnet servo motor, at the same time, it also has a plurality of advantages including windings end minimization, air-gap minimization, material minimization, cogging torque minimization and loss minimization and so on.

Three-phase square-wave permanent magnet brushless DC motor

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Xiang Kong