In consideration of a design plan for intelligent measuring of tubing string length , a mathematical model is established to conduct the measuring based on eulers fomula and the characters of bearing force and deformation of wire rope in the lifting system 针对油管柱长度智能计量的设计方案，以欧拉公式为基础，依据起升系统中钢丝绳的受力特点及变形，推导出适用于油管柱长度智能计量的数学模型。
And as you are finding , as we speak and i bluntly tell you the truth , you seem to find yourself sitting between me and your sidekick ? the private , ego sense of self , the giver of definitions ? and you feel like you are the rope in a tug - of - war 正如你发现的，因著我们交谈时我毫无隐晦地揭露出的真理，你发现自己好像处在我与你的老搭档（即个人的、小我的自我感，亦即下界定的人）之间，而觉得自己象是拔河比赛中那根被两边拉扯的绳子。
Abstract : taking single - rope drum wind as analysing object , the paper analyses safety coefficient of main rope using the dynamic state method under speed up , constant the speed , reduce the speed and emergency braking , change law is gotten comparing them with " mine safety standards " , points out existing problems and solving methods of safety coefficient in selecting and using rope in home 文摘:以立井单绳缠绕式提升机为研究对象，从动态方面分析提升钢丝绳安全系数，得出其在加速、等速、减速、紧急制动状态下的变化规律，与我国《煤矿安全规程》的要求进行比较，指出目前国内选择和使用提升钢丝绳在安全系数方面存在的问题和解决办法。
Combined with the research project of the advanced performance of wire rope in the port cranes , a key technological problem of the ministry of communications , this dissertation investigated the stress - effect on the magnetic flux leakage ( mfl ) of wire ropes and the law of the mfl signal changes during wire rope fatigue testing by experiments and modern signal processing methods based on the ferromagnetic theory , being aimed at the present problems of current wire rope testing technology . the characteristic parameters and quantitative descriptive specifications for wire rope defective signal were analyzed in detail . this dissertation present a novel method of quantitatively evaluating locate faults ( lf ) 本文结合交通部重点科技项目“港口起重机钢丝绳传动件的高性能技术研究” ，针对当前钢丝绳电磁检测技术中所存在的问题，以铁磁学为理论基础，以试验和现代数字信号处理技术为手段，对钢丝绳漏磁信号的应力效应、钢丝绳疲劳损伤历程中的漏磁信号变化规律做了深入的研究，对钢丝绳缺陷信号的特征参数和缺陷的定量描述指标做了详细的分析，提出了一种局部缺陷的定量逼近方法。
