关键词: 耕整地机械, 振动监测, 减振技术, 信号处理

Abstract: Aiming at the problem of structural wear or fatigue fracture of the core working components of cultivated land preparation machinery in the field, this paper expounded on the development status of vibration monitoring technology, summarized the characteristics and applications of three sensor technologies, eddy current type, magnetoelectric type and piezoelectric type, and analyzed the advantages and disadvantages of the three sensor technologies. The hardware system and software system applied to vibration monitoring of tillage machinery were summarized in this paper. The advantages and limitations of the timedomain analysis, frequency domain analysis and timefrequency domain analysis were analyzed, and it was pointed out that time domain and frequency domain analysis were not suitable for unsteady signal analysis. By analyzing the three vibration reduction technologies currently applied to cultivated land preparation machinery and respective applications, such as using damping materials, installing dynamic vibration absorbers and improving the structure of mechanical parts, it was pointed out that the application range of adding dynamic vibration absorbers was narrow, and it was difficult to change the structure of mechanical parts. Finally, two vibration signal processing methods were proposed for vibration signal processing: local transformation combined with the timefrequency analysis method and the deep residual shrinkage network method. In view of the mechanical vibration reduction measures, the suggestion of using damping materials to achieve mechanical vibration reduction was proposed. It is expected to provide a reference for the vibration monitoring and vibration reduction technology of cultivated land preparation machinery and other agricultural machinery equipment.

Key words: cultivated land preparation machinery, vibration monitoring, vibration reduction technology, signal processing