应变测量是研究起重机箱形梁强度问题的重要手段。过去对起重机箱形梁应变的实验研究基本上都是在静态或准静态下进行的,以测量系统的输出量来估价被测量,重点分析测量数值的误差,结果是输入与输出的数值上的对应关系,不具备信息分析与实时处理功能。而起重机在实际工作中处于一定的运动状态,另外由于重物的晃动、轨道不平等原因,其应变是随 Strain measurement is an important means to study the problem of girder box girder strength. In the past, the experimental research on the strain of a box girder of a crane was basically performed under static or quasi-static conditions. The measured output of the crane was used to evaluate the measured value. The error of the measured value was analyzed emphatically. The result was the input and output values Correspondence, do not have the information analysis and real-time processing functions. The crane in the actual work in a certain state of movement, the other due to heavy objects shaking, orbit due to inequality, the strain is with