RN and DN gear shifting control strategy for automatic transmission

The invention relates to a gear shifting control strategy for an automatic transmission, in particular to an RN and DN gear shifting control strategy for the automatic transmission. The RN and DN gear shifting control strategy aims at solving the problems that in the prior art, RN and DN gear shifting for the automobile transmission is not controlled according to the rotating speed of a turbine, or a control strategy is imperfect, and therefore obvious shake impact occurs to some vehicle types with soft power assembly suspensions. The RN and DN gear shifting control strategy is specially characterized in that at room temperature, a main pressure regulating electromagnetic valve is controlled to increase the pressure of a main oil path, and the oil pressure of the main oil path is increased to 1.5 to 2 times of an initial oil pressure within 50 ms; and staged oil drainage control is conducted on a clutch electromagnetic valve according to the rotating speed of the turbine. The garage moving gear shifting comfort can be greatly improved, and the gear shifting quality score can be increased to more than 7.5 from 6.5 ordinarily.