【摘要】 为实现车辆行驶跑偏量的高精度实时测量,针对测量误差大、重复性低的问题,运用GPS-RTK(卫星实时差分定位)技术进行车辆行驶跑偏量测量,将移动站接收机置于待测车辆上实时接收车辆位置信息,通过坐标转换软件转化为平面坐标计算跑偏量,同时建立车辆速度波动误差修正模型,将修正后的结果与传统陀螺仪检测结果进行对比。结果表明:车速的波动是导致车辆行驶跑偏量测量误差大、重复性低的主要因素,通过车辆速度波动修正模型修正后的百米跑偏量结果误差<5 cm,且离散程度明显减小,提高检测的可重复性,实现车辆行驶跑偏量的高精度实时检测。更多还原

【Abstract】 To realize the high-precision real-time measurement of the vehicle driving deviation,and considering the problems of large measuring error and low repeatability, GPS-RTK(Real-time Satellite Differential Positioning) technique is applied for the measurement of vehicle driving deviation. Firstly, the mobile radio station receiver is placed on the test vehicle to receive real-time vehicle location information. Then, the vehicle location information is transformed to driving deviation at horizontal coordinates by coordinate transformation software. At last, a vehicle speed fluctuation error correction model is established. Through the comparison of the results after correction and the results obtained with the traditional gyroscope, it shows that the fluctuation of vehicle speed is the major factor causing the large measurement error and low repeatability of vehicle driving deviation. After the vehicle speed fluctuation correction model is used for correction, the 100-meter driving deviation measuring error can be kept under 5 cm and dispersion degree is reduced obviously. Therefore, the method can be used for the high-precision real-time measurement of the vehicle driving deviation.更多还原