高速汽车侧风稳定性控制
Crosswind stability control of high-speed vehicles
谢茹 1张蕾 1刘晓龙 1孙佳顺 1齐晨雨1
作者信息
- 1. 天津职业技术师范大学汽车与交通学院,天津 300222
- 折叠
摘要
针对汽车在侧风环境中容易失稳的问题,基于模型预测控制(model predictive control,MPC)理论提出了一种分层式直接横摆力矩控制(direct yaw moment control,DYC)策略,以使得汽车突遇侧风干扰时能够较好地维持稳定性.上层控制器依据MPC理论精确计算并输出必要的横摆力矩,以确保车辆稳定行驶并将其传递给下层控制器;下层控制器接收到横摆力矩后,将横摆力矩精确地分配到每个车轮上.为验证所设计的MPC直接横摆力矩控制器的性能,采用Carsim与Simulink联合仿真平台进行仿真,并与基于滑模控制理论的控制器进行对比分析.结果表明:本研究提出的基于MPC的控制器,控制效果优于滑模控制器,有效提高了汽车的侧风稳定性.
Abstract
A layered direct yaw moment(DYC)strategy is proposed based on MPC(model predictive control)theory to address the issue of vehicle instability in crosswind environments.This approach enables the vehicle to maintain stability effectively when subjected to crosswind disturbances.The upper controller calculates and outputs the required yaw moment to ensure stable vehicle operation and transmits this signal to the lower controller.Upon receiving the yaw moment from the upper controller,the lower controller distributes the moment accurately to each wheel.To validate the performance of the designed MPC-based direct yaw moment controller,a joint simulation platform utilizing Carsim and Simulink is estab-lished,and a comparative analysis is conducted against existing controllers based on sliding mode control theory.The re-sults indicate that the MPC-based controller outperforms the sliding mode controller and significantly enhances the cross-wind stability of the vehicle.
关键词
侧风稳定性/模型预测控制(MPC)/直接横摆力矩Key words
cross wind stability/model predictive control(MPC)/direct yaw moment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据