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首页> 外文期刊>Mechanical systems and signal processing >Integrated optimal dynamics control of 4WD4WS electric ground vehicle with tire-road frictional coefficient estimation
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Integrated optimal dynamics control of 4WD4WS electric ground vehicle with tire-road frictional coefficient estimation

机译:带轮胎-道路摩擦系数估算的4WD4WS电动地面车辆的集成最优动力控制

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摘要

This paper presents an integrated optimal dynamics control of four-wheel driving and four-wheel steering (4WD4WS) electric ground vehicles via hierarchical control methodology. In the higher-level design, an LQR controller is proposed to obtain the integrated lateral force and yaw moment, according to their respective reference values. The lower-level controller is designed to ensure all the tires work in the stable region while realizing the tracking control of the vehicle dynamics. The tire-road friction coefficient is estimated through the integrated longitudinal force and lateral force, respectively, using a brush tire model. To reduce the estimation error, a novel data fusion function is employed to generate the final estimation value. Finally, the effectiveness of the proposed control and estimation strategies is validated via CarSim-Simulink joint simulation.
机译:本文通过分层控制方法,提出了四轮驱动和四轮转向(4WD4WS)电动地面车辆的集成最优动力学控制。在更高级别的设计中,提出了一种LQR控制器,以根据它们各自的参考值获得积分的横向力和横摆力矩。下层控制器旨在确保所有轮胎在稳定区域内工作,同时实现对车辆动力学的跟踪控制。使用毛刷轮胎模型分别通过整合的纵向力和横向力估算轮胎-道路摩擦系数。为了减少估计误差,采用了新颖的数据融合功能来生成最终估计值。最后,通过CarSim-Simulink联合仿真验证了所提出的控制和估计策略的有效性。

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