根据振动的瞬时非线性特点,提出采用振动信号的本征模函数(IMF)对实测信号进行特征频带识别。将采集的振动信号经经验模态分解,并去掉主要干扰因素所对应的IMF分量,以得到真实的有效信号。实际测试结果表明,对提取后的信号进行计算后能得到准确的轴重值。 According to the instantaneous nonlinear characteristics of vibration, the eigen-band identification of the measured signal is proposed using the intrinsic mode function (IMF) of the vibration signal. The acquired vibration signal is decomposed by the empirical mode, and the IMF component corresponding to the main interference factor is removed to obtain the real and effective signal. The actual test results show that the accurate axle load value can be obtained after the extracted signal is calculated.