摘要
城市轨道交通列车运行过程中,轮对空转/滑行和车轮磨损是造成车载里程计测速测距误差的主要原因,因此里程计定位误差的检测和校正主要是对列车空转/滑行和车轮磨损的检测和误差校正。通过城市轨道交通列车定位需求分析以及传感器定位特性分析,在列车里程计基础上引入多普勒雷达,采用二者构建车载组合定位系统。基于H!滤波理论实现两种传感器量测信息的融合处理,得到列车定位参数的最优估计,在此基础上,利用空转/滑行和车轮磨损检测方法完成相关检测并对误差进行校正。仿真试验结果验证了本方法的有效性,达到了模型的预期设计目的,提高了车载定位系统的自主定位能力。
During the operation of urban rail transit train, wheel slip/slide and wheel abrasion are considered as the main causes for odometer error in speed and distance measurement, so the detection and correction for odometer positioning error is mainly put on wheel slip/slide, on wheel abrasion detection and error correction. Through an analysis of rail transit train location requirement and sensor positioning behavior, the doppler radar and odometer constitute train integrated positioning system are installed. Based on H filtering theory, the fusion of two sensor measurement information is achieved and the train moving state optimal estimation parameters obtained. Then, the wheel slip/slide and wheel abrasion detection method is used to complete the correlation detection and error correction. Simulation results demonstrate that the effectiveness of the proposed method, which could improve the designed independent positioning capability of vehicle on-board positioning system.
出处
《城市轨道交通研究》
北大核心
2016年第5期19-25,共7页
Urban Mass Transit
