Research On Tracked Vehicle Engine Support Test System

In today’s era,tracked vehicles such as tanks or armored vehicles are integrated and rapidly developed in terms of fire protection,mobility,and electronic information.They occupy a dominant position in modern army wars.The advanced tracked vehicle testing technology is the guarantee for the rapid development of tracked vehicles.Engine support components are one of the key components of the engine transmission system of tracked vehicles.It is necessary to study them to obtain their stress information.The optimization of engine support structure and the study of engine transmission are of great significance.In order to obtain the force information of the engine support,this paper studies the engine support test system based on the storage support technology based on the strain law of the engine support.The main research contents of this paper are as follows:(1)Force analysis of the engine support,complete the modeling and simulation through the mechanical analysis software,determine the engine support strain sensitive position and arrange the strain gauges.Determine the overall design of the test system: the engine support test system unit in the cabin and the multi-channel data receiving unit outside the cabin,and carry out corresponding key technology research.(2)In terms of hardware circuit design,a dual-channel output design is carried out for the engine support test system unit in the cabin,and a CAN bus data upload module and trigger signal relay module design are carried out for the multi-channel data receiving unit outside the cabin to realize the signal Acquisition and data communication functions.(3)The electromagnetic compatibility design was carried out,and the shielding effectiveness of the engine support shell,the crosstalk of the communication cable and the sensitivity of electromagnetic pulse irradiation were simulated and analyzed by the microwave studio software.The calibration of the test system is completed through the loading test of the mechanical platform,the data calibration formula and accuracy are obtained,and the engine support data processing scheme is determined.(4)A complete integrated empirical mode decomposition with adaptive noise(CEEMDAN),autocorrelation function(AF),and joint wavelet threshold lifting denoising algorithm based on adaptive white noise are proposed,Through simulation comparison experiments,the advantages of the algorithm in SNR and RMSE are verified.Then through the data analysis of an actual working condition,the effective signal and noise in the measured data are judged in the form of frequency domain and power spectral density.Finally,the algorithm is used to process the measured data of the four working conditions,and the force analysis of the engine support under the four working conditions is carried out.