• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (20): 181-193.doi: 10.3901/JME.2021.20.181

• 运载工程 • 上一篇    下一篇

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基于鲁棒自适应SCKF的智能汽车目标状态跟踪研究

张志达1,2, 郑玲1,2, 李以农1,2, 吴行1,2, 余颖弘1,2   

  1. 1. 重庆大学机械与运载工程学院 重庆 400044;
    2. 重庆大学机械传动国家重点实验室 重庆 400044
  • 收稿日期:2020-05-08 修回日期:2021-04-23 出版日期:2021-10-20 发布日期:2021-12-15
  • 通讯作者: 郑玲(通信作者),女,1963年出生,博士,教授,博士研究生导师。主要研究方向为智能汽车的环境感知、决策与动力学控制。E-mail:zling@cqu.edu.cn
  • 作者简介:张志达,男,1990年出生,博士研究生。主要研究方向为智能汽车状态估计与循迹控制。E-mail:zhangzhida_edu@163.com;李以农,男,1961年出生,博士,教授,博士研究生导师。主要研究方向为车辆系统动力学与控制、振动噪声控制。E-mail:ynli@cqu.edu.cn
  • 基金资助:
    国家自然科学基金(51875061)、重庆市研究生科研创新(CYB19063)和重庆市技术创新与应用发展专项(cstc2019jscx-zdztzxX0032)资助项目。

Research on Intelligent Vehicle Target State Tracking Based on Robust Adaptive SCKF

ZHANG Zhida1,2, ZHENG Ling1,2, LI Yinong1,2, WU Hang1,2, YU Yinghong1,2   

  1. 1. College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044;
    2. State Key Lab of Mechanical Transmissions, Chongqing University, Chongqing 400044
  • Received:2020-05-08 Revised:2021-04-23 Online:2021-10-20 Published:2021-12-15

摘要: 准确的自车和前车状态估计是智能汽车有效决策和控制的前提,而以往的研究通常不考虑噪声统计特性不确定的问题,导致某些情况下车辆状态估计的误差很大。为此,提出一种鲁棒自适应平方根容积卡尔曼滤波(Robust adaptive square-root cubature Kalman filter,RASCKF)算法,以降低噪声统计不确定性对估计精度的影响。首先,采用最大后验概率准则估计了过程噪声协方差和测量噪声协方差的统计值,以提高噪声稳定时状态估计的精确性。然后,基于标准化测量新息序列设计了故障检测规则,利用实时测量新息对噪声协方差进行校正处理,保证状态估计算法的鲁棒性。最后,在不同的噪声干扰工况下对RASCKF算法进行了仿真验证。结果表明,RASCKF算法在估计精度和稳定性上明显优于标准SCKF算法,有效地解决了智能汽车目标状态跟踪过程中噪声统计特性不确定的问题。

关键词: 智能汽车, 目标状态跟踪, 平方根容积卡尔曼滤波, 鲁棒自适应

Abstract: Accurate estimation of the states of vehicle and front vehicle is the premise of the effective decision-making and control of the intelligent vehicle. However, previous studies usually do not consider the uncertainty of noise statistical characteristics, which leads to a large error of vehicle state estimation in some cases. Therefore, a robust adaptive square-root cubature Kalman filter (RASCKF) algorithm is proposed to reduce the influence of noise statistical uncertainty on estimation accuracy. Firstly, the statistical values of process noise covariance and measurement noise covariance are estimated by the maximum a posterior (MAP) criterion to improve the accuracy of state estimation when the noise is stable. Secondly, the fault detection rules are designed based on the standardized measurement innovation sequence, and the real-time measurement innovation is used to correct the noise covariances for ensure the robustness of the state estimation algorithm. Finally, the RASCKF algorithm is verified by simulation under different noise interference conditions. The results show that RASCKF algorithm is superior to standard SCKF algorithm in estimation accuracy and stability, which effectively solves the problem of uncertain noise statistical characteristics in the process of intelligent vehicle target state tracking.

Key words: intelligent vehicle, target state tracking, square-root cubature Kalman filter, robust adaptive

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