Figure 1 shows the displacement response of the normal driving wheel in the π¦ direction: the time interval between two adjacent peaks is 0.00175s, corresponding to the meshing frequencyβ»m = 570hz, which indicates that the peak response is caused by the alternating engagement of single and double teeth (instantaneous variable meshing stiffness), which is consistent with the theoretical analysis in the previous chapters. The frequency domain diagram as shown in Fig. 2 can be obtained by spectrum analysis of time domain waveform: under normal conditions, the main vibration frequency components of driving wheel in π¦ direction include meshing frequency Fm and its multiple frequency 2Fm, 3Fm, etc, It is consistent with the time domain waveform.
