To develop the pressure control algorithm for active braking of adaptive cruise control（ACC） system,a test bench with real parts of the tested vehicle is built.With the dynamic analysis of the active braking actuato...To develop the pressure control algorithm for active braking of adaptive cruise control（ACC） system,a test bench with real parts of the tested vehicle is built.With the dynamic analysis of the active braking actuators,it is demonstrated that different duty of pulse-width modulation（PWM） signals could control the pressure changing rate of the wheel cylinder.To obtain that signal,a modified proportional-integral-differential（PID） control algorithm is developed using the variable parameter method,the control value reset method,the dead zone method and the integral saturation method.Experimental results show that the delay and overshoot of the pressure response could be reduced considerably using the modified PID algorithm compared with the conventional one.The proposed pressure control algorithm could be used for the further development of the ACC＇s controller.展开更多
为解决高速公路爆胎车辆出现偏航的问题,借助ve DYNA软件进行了的仿真研究。在确定了爆胎车辆轨迹控制的评价指标后,采用模糊PID(Proportion Integral Differential)控制器,规划了爆胎后车辆的方向盘转角,代替驾驶员对爆胎车辆进行方向...为解决高速公路爆胎车辆出现偏航的问题,借助ve DYNA软件进行了的仿真研究。在确定了爆胎车辆轨迹控制的评价指标后,采用模糊PID(Proportion Integral Differential)控制器,规划了爆胎后车辆的方向盘转角,代替驾驶员对爆胎车辆进行方向控制。该方法结合模糊控制和传统PID控制的优点,针对车辆爆胎的复杂环境,自动整定PID控制参数,适应爆胎车辆的参数变化。仿真结果表明:基于模糊自整定PID的爆胎车辆轨迹控制可在保证车辆稳定行驶的同时控制车辆的行驶轨迹,使其在出现较小偏移后回到原路径,具有较好的适应性。展开更多
基金Supported by the Ministerial Level Advanced Research Foundation(40401040302)
文摘To develop the pressure control algorithm for active braking of adaptive cruise control（ACC） system,a test bench with real parts of the tested vehicle is built.With the dynamic analysis of the active braking actuators,it is demonstrated that different duty of pulse-width modulation（PWM） signals could control the pressure changing rate of the wheel cylinder.To obtain that signal,a modified proportional-integral-differential（PID） control algorithm is developed using the variable parameter method,the control value reset method,the dead zone method and the integral saturation method.Experimental results show that the delay and overshoot of the pressure response could be reduced considerably using the modified PID algorithm compared with the conventional one.The proposed pressure control algorithm could be used for the further development of the ACC＇s controller.
文摘为解决高速公路爆胎车辆出现偏航的问题,借助ve DYNA软件进行了的仿真研究。在确定了爆胎车辆轨迹控制的评价指标后,采用模糊PID(Proportion Integral Differential)控制器,规划了爆胎后车辆的方向盘转角,代替驾驶员对爆胎车辆进行方向控制。该方法结合模糊控制和传统PID控制的优点,针对车辆爆胎的复杂环境,自动整定PID控制参数,适应爆胎车辆的参数变化。仿真结果表明:基于模糊自整定PID的爆胎车辆轨迹控制可在保证车辆稳定行驶的同时控制车辆的行驶轨迹,使其在出现较小偏移后回到原路径,具有较好的适应性。
