For the characteristics of full electric propulsion, a novel kind of brake-by-wire unit is designed for electricvehicle to improve braking performance. A comprehensive brake-by-wire system including this unit is set up after itsstructure and principle are introduced. Then, a multi-layer fuzzy controller is proposed to regulate decelerate and wheelslip rate, and an optimal regenerative strategy is proposed to recover braking energy. At last, the experiment of brake unitis completed to verify that this novel unit is technologically feasible, and an electric vehicle co-simulation model based onMATLAB/Simulink and AMESim is established to prove that this novel unit is able to significantly improve brakingperformance of electric vehicle. The simulation result shows braking distance and time are shorten by 12.19% and 15.54%respectively compared with conventional ABS system in the same braking condition, and the recovery efficiencies in lightand heavy braking are 53% and 28% respectively.
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