Abstract: When a vehicle experiences a tire blowout at high speed, it generates a strong lateral disturbance torque, threatening the driving stability. Therefore, this paper proposes a coordinated control strategy of active steering and differential braking. Based on the three-degree-of-freedom vehicle model, a hierarchical yaw rate feedback controller is designed: the upper layer proportionintegral-differential (PID) calculates the total control torque, and the lower layer is allocated to the active steering and differential braking systems. Simulation results show that in the 90 km/h straight-line tire blowout condition, the maximum lateral displacement, yaw rate, and center of gravity camber angle are reduced by 43.7%, 29.2%, and 35.3% respectively; in the 60 km/h curved road tire blowout condition, it effectively suppresses the lateral deviation and yawing divergence. This coordinated control strategy utilizes the complementary advantages of both to significantly improve the vehicle stability under tire blowout conditions.

Key words: vehicle tire blowout; driving stability; active steering; differential braking

摘要： 车辆高速爆胎产生强烈横摆干扰力矩，威胁行驶稳定性。为此，文章提出主动转向与 差动制动协同控制策略。基于三自由度车辆模型，设计分层式横摆角速度反馈控制器：上层 比例-积分-微分（PID）计算总控制力矩，下层分配至主动转向和差动制动系统。仿真表明， 在 90 km/h 直线爆胎工况下，最大横向位移、横摆角速度和质心侧偏角分别降低 43.7%、29.2% 和 35.3%；在 60 km/h 弯道爆胎工况下，有效抑制侧偏与横摆发散。该协同控制策略利用两者 优势互补，显著提升爆胎工况下的车辆稳定性。

关键词: 车辆爆胎；行驶稳定性；主动转向；差动制动