摘要
为改善或提高汽车行驶安全性及驾驭汽车的轻松舒适性,提出基于城市工况的汽车定速巡航PID控制办法.设计了PID巡航控制器,采用预定车速与巡航车自身实际车速偏差作为控制器输入参量,将发动机节气门开度作为控制器的输出量.利用MATLAB/Simulink建立了汽车纵向系统动力学模型,将控制器得到的节气门开度输入到汽车纵向控制系统模型,实现了巡航系统闭环反馈控制的仿真.结果表明:该方法能够有效地保证巡航车按设定的城市工况所允许的车速行驶,具有较好的控制效果,建立的汽车纵向系统动力学模型也是有效的.
In order to improve the vehicle driving safety and comfortability, a method of automobile cruise control was put forward based on the city traffic condition. A PID controller on the automobile cruise control system was created. Using the deviation of an expected velocity and the actual velocity of cruise vehicle as the input source, the throttle position was obtained based on PID controUer. Adopting MATLAB/Simulink, a module on vehicle longitude dynamics system was set up and the simulation on closed-loop cruise control was validated by inputting the throttle position into the module of vehicle longitude dynamics system. The simulation results show that the module is effective and the methods on automobile cruise control can sure the cruise vehicle has a better performance to follow the expected velocity.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2014年第2期232-235,共4页
Journal of Liaoning Technical University (Natural Science)
基金
辽宁省教育厅优秀人才基金资助项目(LJQ2012058)
关键词
巡航控制
节气门开度
纵向系统动力学
仿真
cruise control
throttle position
vehicle longitude dynamics system
simulation
