Bonding To Change The Experimental Study Of The Nonlinear Vibration

Based on the high precision and non-touching advantages, the vibration of the ultrasonic bonding transforming system was tested and the complexity of the system was discussed. G-P algorithm was employed to analyse the nonlinear characteristic of the vibration time series. The correlated dimensions along the three different directions were calculated and the possible influencing factors of the values were analyzed. A number of valuable experimental results has been deduced which may be a reference for the modeling and optimizing of this dynamics system. This paper mainly included:1. The methods for testing the bonding system were summarized. All the mechanisms and related results of each method have been cited. Frequency sweeping method was employed to test the mechanical admittance with difference magnitude of bonding tool.2. Coherence Function was introduced to analyze the coherence characteristic along the axial-pitching and axial-horizontal direction and the source of the vibration along pitching direction in three different bonding tool fixing conditions was explored.3. Surrogate Data method was employed to identify the nonlinear characteristic of the vibration time series. The mechanism of this method was explained at first. Two typical examples were introduced to testify the stabilization of this method.4. Based on the experimental datas, correlated dimensions of the vibrating transducer were calculated. We have discussed the fractal characateristics of the time series quantitatively. The possible influencing factors such as sampling frequency, the datas length and noise, have been studied which maybe helpful for modeling of this complicated structure.The above research results can support for the modeling of this system.