Dual-motor steer-by-wire system and multi-target energy optimization method thereof

The invention relates to a dual-motor steer-by-wire system and a multi-target energy optimization method thereof, and belongs to the technical field of vehicle steer-by-wire systems. The method comprises the following steps: (1) establishing a whole vehicle model and a dual-motor steer-by-wire system model; (2) deducing a total required torque and rotating speed formula of two steering motors of the vehicle according to the model established in the step (1); (3) establishing a dual-motor total consumption power model and a total loss power model, and researching a torque distribution problem by combining power loss analysis based on a motor efficiency model; (4) establishing a multi-target energy optimization model of the dual-motor steer-by-wire system under the constraint conditions of the dual-motor torque rotating speed and the optimization variable value range; and (5) according to the multi-objective energy optimization model of the double-motor steer-by-wire system, adopting a simulated annealing algor