position reference meaning in English
位置基准
Examples
- Acoustic position reference system
声定位参照系 - When machining parts with bore as positioning reference , if clearance fit positioning is adopted , machining accuracy is certainly affected due to the existence of clearance
摘要在精加工以内孔为定位基准的零件时，所用芯轴类工装如果采用间隙配合定位，由于定位间隙的存在，必然影响零件的加工精度。 - In this dissertation , we studied the tcra1101plus total station position system , which introduced the principle and characters of the instrument ' s closed loop tracking system . also we explained the cause of prism ' s position error and brought forward mathematic model to correct , moreover , the good results has been drawn form the expenriments . the kinetic survey system have been realized , which the sampling rate attain more than 5hz and the position precision can be less than 2mm on condition that targeted - point moving slowly at the velocity below 2cm / s . having finished the survey system to examine whether the fine - tuning stewart platform in good status , we have finished mensurating the position reference of the fine - tuning stewart platform and the offset of the prism
在此基础上研制了多台仪器在线控制高频采样动态跟踪测量系统，采样率大于5hz ，在跟踪小于2cm / s低速运动目标时，测量精度好于2mm ；完成对馈源二次精调系统的检测，包括对二次精调平台位置基准的标定和观测棱镜偏心差的测定；设计不同动态测量实验，对全站仪动态跟踪的误差来源和特点进行了分析；从实验角度，对全站仪的测量时滞及其稳定性进行了测试分析，给出了定量的结果；比较了全站仪和计算机的内部时间系统，发现两者存在较大差异。 - The former requires all the possible positions should be provided by the location model at first . then the real one will be selected by majority rule . different from the former , the later , utilizing a given position reference , intends to resolve ambiguities before solving positioning functions
前者要求解算出目标所有的模糊位置，然后由一系列判据举手表决确定真实位置；后者需要目标初始位置这一先验信息，利用此信息可以唯一确定信号的传播时延，从而实现无模糊定位。