摘要
在地下水平定向钻进技术中,为了实现水平定向钻进中的轨迹监控和精确导向,需要实时获取地下钻头的空间位置和姿态参数。这里基于磁偶极子模型下的磁场表达式,推导出采用通电螺线管线圈产生一个类似于磁偶极子的静磁场与时谐场的磁场分布。通过非线性和线性算法,对源端钻头与目标端的距离和相对方位进行定位,从而提高了它们的相对位置的测量精度。同时利用磁定位的非线性算法和线性算法,使其目标误差最小,精度高,速度加快,稳定可靠。
In underground horizontal directional drilling technology, it needs to obtain the underground spatial position and posture parameters of the drill in real time to implement the horizontal directional drilling trajectory monitoring and precise ori- entation. Therefore, based on the magnetic field expression of the magnetic dipole model, the magnetic field distribution which is similar to the static magnetic field and the time--harmonic field of the magnetic dipole are deduced by using electric solenoid coil. To achieve positioningby means of the arithmetic of the relative orientation and the distance between the drill and the ob- jective targets, the measurement accuracy of the relative position can be improved. In the mean time wetake advantage of the linear and nonlinearmethods of the magnetic localization to make the smallest target error, high precision, much more speed, stable and reliable.
出处
《物探化探计算技术》
CAS
CSCD
2015年第4期422-427,共6页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金资助(61072082)
中央高校基础科研业务费(FRF-MP-12-008A)
关键词
定向钻进技术
磁偶极子
螺线管
磁定位
定位算法
horizontal directional drilling
magnetic dipole
solenoid
magnetic location
location algorithm
