车辆关键状态参数观测器的设计  

Design of Vehicle Critical State Parameter Observer

作　　者：漆隆 方存光[1] Qi Long;Fang Cun-guang(Shenyang Ligong University,Liaoning Shenyang 110159)

机构地区：[1]沈阳理工大学汽车与交通学院,辽宁沈阳110159

出　　处：《内燃机与配件》2024年第11期4-6,共3页Internal Combustion Engine & Parts

摘　　要：车辆的横摆角速度与质心侧偏角都是与车辆操纵稳定性密切相关的车辆状态参数。针对传感器成本高以及车辆质心侧偏角等关键状态参数很难测量等问题,本文选择包含横摆角速度和质心侧偏角等参数的车辆二自由度模型作为参考模型,基于Matlab/Simulink平台进行卡尔曼观测器的搭建并与Carsim软件联合仿真验证观测器的预估精度,通过对比实际输出曲线与预估曲线,两者基本吻合,具有较高的应用价值。Transverse angular velocity and center-of-mass lateral deflection of a vehicle are vehicle state parameters that are closely related to the stability of vehicle maneuvering.In view of the high cost of sensors and the difficulty of measuring key state parameters such as center of mass lateral deflection,this paper selects the two-degree-of-freedom model of the vehicle containing the parameters of traverse angular velocity and center of mass lateral deflection as the reference model,and builds a Kalman observer based on the platform of Matlab/Simulink,and verifies the accuracy of the observer prediction with the simulation of the Carsim software,and the actual output curve and the prediction curve are basically in good agreement.By comparing the actual output curve with the predicted curve,both of them are basically consistent and have high application value.

关 键 词：卡尔曼观测器 操纵稳定性 质心侧偏角 横摆角速度 

分 类 号：U462[机械工程—车辆工程]