Research on Direct Current Brushless Motor Shift Control Performances of Two Speed Transmission in Pure Electric Driving Vehicles

Based on the two speed transmission shifting system of pure electric vehicles, this study analyzes the characteristics and advantages of the shifting mechanism controlled by brushless direct current motor (BLDCM), designs and verifies the control scheme of BLDCM, that is, designs the electric shifting software architecture, builds Matlab/Simulink software model, realizes BLDCM control based on PID control method, and completes the basic shifting function test on the bench. The design and verification results preliminarily show that the shifting control performances were good.