In order to make the collected load signals more realistic and effective,used MATLAB software to develop corresponding programs for pre-processing operations such as removing zero drift and singular values on the load signal of the hydraulic excavator working device.Based on the changes in the displacement,thrust,and rotation angle of the hydraulic cylinder during the operation of the excavator,the excavator operation process was divided into four stages:excavation,lifting,unloading,and return,and verified a certain load signal in the experiment,it successfully passed the tests of stationarity and erg-odicity of various states,this indicates that the preprocessing program is scientifically effective and lays the foundation for the subsequent scientific compilation of load spectra and prediction of fatigue life.
维普
万方数据