中国机械工程 ›› 2014, Vol. 25 ›› Issue (1): 130-133,137.

• 机械基础工程 • 上一篇    下一篇

汽车S-AKF估计与PID控制的闭环系统仿真

沈峘;林棻   

  1. 南京航空航天大学,南京,210016
  • 出版日期:2014-01-10 发布日期:2014-01-14
  • 基金资助:
    国家自然科学基金资助项目(10902049);中国博士后科学基金资助项目(2012M521073) 

Vehicle Closed-loop System Simulation Based on S-AKF Estimation and PID Control

Shen Huan;Lin Fen   

  1. Nanjing University of Aeronautics and Astronautics,Nanjing,210016
  • Online:2014-01-10 Published:2014-01-14
  • Supported by:
    National Natural Science Foundation of China(No. 10902049);Supported by China Postdoctoral Science Foundation(No. 2012M521073)

摘要:

基于Carsim和Simulink设计了基于PID的横摆角速度控制策略,并对控制策略的效果进行了验证;建立了二自由度汽车动力学模型,提出将S-自适应卡尔曼滤波(S-AKF)算法用于汽车横摆角速度和质心侧偏角的估计;将S-AKF估计器与PID控制器相结合,构成完整的估计-控制闭环系统。通过Carsim中的操稳试验对整个系统的性能进行了仿真验证,结果显示,提出的估计-控制体系可在必要工况下实现对汽车的主动干预,提高汽车的路径跟踪能力和稳定性能。

关键词: 汽车, 状态估计, 动力学控制, 仿真

Abstract:

A yaw rate PID control strategy was designed based on Simulink and Carsim, effectiveness of the control strategy were verified. Then a two DOF vehicle dynamics model was established, the S-adapt Kalman filter (S-AKF) algorithm was proposed to estimate yaw rate and sideslip angle. Finally, the S-AKF estimator was combined with the PID controller to constitute a complete estimate-control closed-loop system. The entire system performance was validated through virtual test of Carsim. The results show that the control algorithm together with the estimation algorithm constitute a complete control system, which can acquire active intervention for car under necessary conditions, also improve the vehicle's path tracking ability and stability.

Key words: vehicle, state estimation, dynamics control, simulation

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