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1. 中兵智能创新研究院有限公司, 北京 100072
2. 群体协同与自主实验室, 北京 100072
Received:06 September 2023,
Published Online:15 January 2024,
Published:30 December 2023
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Xijun ZHAO, Xing CUI, Zhaodong LI, et al. Adaptive Inter-vechile Distance Control for Unmanned Ground Vehicle Convoy[J]. Acta Armamentarii, 2023, 44(S2): 44-51.
Xijun ZHAO, Xing CUI, Zhaodong LI, et al. Adaptive Inter-vechile Distance Control for Unmanned Ground Vehicle Convoy[J]. Acta Armamentarii, 2023, 44(S2): 44-51. DOI: 10.12382/bgxb.2023.0878.
编队机动是地面无人平台自主导航技术的重要功能之一。研究编队机动系统的车速自适应车间距保持控制方法
建立车速自适应车间距控制框架
将车间距保持控制分为串联的3个部分:跟驰模型、车间距控制和速度规划。以传统时距模型为基础
引入前后车速度关系的修正项
提出改进非线性跟驰模型
模型符合编队机动逻辑
根据车速变化自适应调节安全车间距
提高编队效率。以距离误差和速度误差的加权组合作为车间距控制的目标
设计加权系数的自修正PID控制器
提高了控制响应和控制精度。以参考速度和前后车运动特性为约束
设计速度规划器
对期望速度进行精确跟踪。通过仿真实验和实车实验验证车间距保持控制的性能
实验结果表明控制算法对不同速度具有较好的控制效果
在越野环境前车频繁加减速的工况下具有较好的跟驰性能
且自动适应速度变化过程。
Formation maneuver is one of the important functions of autonomous navigation technology for unmanned ground platforms.A novel velocity-adaptive inter-vehchiled istance control method is proposed for unmanned ground vehicle (UGV) convoy
and a cascaded adaptive inter-vehchile distance control diagram is introduced
which includes following model
inter-distance control and velocity planning. A modified nonlinear following model which considers relative velocity error is established based on the traditional time-headway policy. Then a self-tuned PID controller is calculated using the weighed combination of distance error and velocity error. The control performance is validated through simulation and field test. The results show that the proposed inter-distance control method is adaptive to velocity change
and improves the overall control performance of UGV convoy in unstructured terrain.
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