摘要
文章以现有汽车行驶速度系统的数学模型为基础,将PID控制算法引入其中,在Simulink仿真软件中,建立汽车行驶速度PID控制系统的仿真模型,分析系统在有阻尼和无阻尼情况下,绘制汽车行驶速度曲线图,同时建立无PID控制时汽车行驶速度系统模型。分析结果表明,在有阻尼的情况下,汽车行驶速度曲线很快收敛并达到稳定状态,在无阻尼的情况下,汽车行驶速度曲线超调量较大并且达到稳定状态所需时间较长。若去掉PID控制,汽车行驶速度只能达到在最小车速以下某一值,若无阻尼,则汽车行驶速度收敛于最小车速。该研究对提高汽车行驶速度控制系统的精度和稳定性有一定参考价值。
Based on the mathematical model of the existing vehicle speed system, this paper introduces the PID control algorithm into it, and establishes the simulation model of the vehicle speed PID control system in the Simulink simulation software. In the case of damped and undamped, the vehicle speed curve is drawn, and the vehicle speed system model without PID control is established at the same time. The analysis results show that the vehicle speed curve converges quickly and reaches the stable state under the condition of damping, and the vehicle speed curve overshoot is larger and the time to reach the stable state is longer under the condition of no damping. If the PID control is removed, the vehicle speed can only reach a certain value below the minimum speed. If there is no damping, the vehicle speed converges to the minimum speed. The research has certain reference value for improving the precision and stability of the vehicle speed control system.
出处
《汽车实用技术》
2018年第2期127-129,共3页
Automobile Applied Technology
关键词
汽车
行驶速度
控制
仿真
vehicle
driving speed
control
simulation
