转动自校准惯性路面仪设计与实现
Design and Implementation of a Rotational Inertial Profiler
张振鸿 1蔡毓2
作者信息
- 1. 广西大学计算机与电子信息学院 南宁 530004
- 2. 广西大学电气工程学院 南宁 530004
- 折叠
摘要
虽然传统的惯性路面仪能够在高速条件下(>120km/h)对路面平整度做高精度测量(～0.1mm),但是这种测量对底盘的转动比较敏感.传统的惯性路面仪假设底盘是水平的.在这种情况下,只需要单轴的加速度传感器就可以进行测量了.然后,假如仪器安装的位置离重心比较远的时候,旋转角是不能忽略的.本文使用陀螺仪传感器测量旋转角和二轴加速度计计算垂直方向上的加速度,路面平整度仪就可以克服旋转带来的不利影响,实现角度校准和更精确的路面平整度测量.
Abstract
Although traditional inertial profiler can measure profile under high speed condition(>120km/h)with high preci-sion(～0.1mm),it is sensitive to chassis rotational movement.Tradition inertial profiler assumes chassis is horizontal.In this scenar-io,one axis accelerometer sensor is enough.However,if the profiler is mounted far away from weight center of the vehicle,the rota-tional movement is not negligible.The paper proposes a new method,by adding a gyroscope sensor to measure the rotation angle and two axes accelerometer to calculate acceleration in absolute vertical direction.The profiler can overcome the negative impact raised by the rotation and accomplish higher precision profile measurement by angle calibration.
关键词
惯性分析仪/加速度计/角度自校准Key words
inertial profiler/accelerometer/angle self-calibration引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据