Modeling and Optimal Shift Control of a Planetary Two-Speed Transmission
To improve the efficiency of electric vehicles (EVs), a planetary two-speed transmission is proposed, which consists of a brushless direct current (BLDC) motor, a turbo-worm reducer, two multi-disc wet brakes, and a Simpson planetary gearset.Based on the devised electronic actuator for shifting, the rotation direction of the BLDC shaft determines t