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- 2018
利用摄影测量在线检测轨道车辆车体运行姿态
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Abstract:
轨道车辆运行时产生的各种振动导致车体相对于轨道的运行姿态发生变化，提出利用面阵相机和线激光组合的摄影测量方法在线检测车体运行姿态。检测系统安装在车体上可拍摄到轨面的任意位置（3点非共线），选择激光在轨面投影的中点作为参考点，通过标定得到参考点在计算机图像坐标系和车体坐标系中的空间变换关系；车辆运动过程中，面阵相机拍摄线激光在轨面上的投影，将参考点在计算机图像坐标系中的坐标转化为车体坐标系中的坐标；结合参考点在轨面随行坐标系中的坐标特性，解算车体相对于轨道的坐标系转换，建立描述车体相对于轨道实时运行姿态的数学模型；构建检测系统，通过车体振动模拟平台及现场实车试验，验证了检测系统的可靠性
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