【摘要】 基于转向传动比随汽车速度和方向盘转角而变化,提出了前轮控制、侧滑率反馈控制和侧滑率及加速度反馈控制三种前轮线控转向的稳定性控制策略,并进行了驾驶模拟器试验评价。结合后轮主动转向研究了分别采用前馈控制方式和反馈控制方式的线控四轮转向系统的转向控制策略,并将其与前轮线控转向和传统四轮转向系统进行了比较。仿真和模拟器试验验证了线控四轮转向系统能有效提高汽车的操纵稳定性。更多还原

【Abstract】 Three stability control strategies, including the front-wheel(FW) control, the yaw-rate feedback control as well as the yaw-rate and acceleration feedback control, were proposed for the FW steer-by-wire(SBW) system based on the fact that the steering-ratio varies with the vehicle speed and the steering wheel angle. Theses strategies were evaluated by the tests on the driving simulator. The forward-feed and backfeed control strategies in the four-wheel(4W) SBW system were studied in the case of rear-wheel active steering, and compared with FW SBW and traditional 4W steering system. The results of simulations and driving simulator tests indicate that 4W SBW can improve effectively the vehicle handling and stability.更多还原