The EEDM(Ensemle Empirical Mode Decomposition) combined with correlation coefficient was proposed for identify the fault of rolling bearing. First, the fault of rolling bearing vibration signal will be decomposed into several IMF components, in view of the illusive component may appear in EEDM components, respectively calculate each IMF components and the correlation between the original signal, then carry out spectrum analysis to each IMF components and pick up fault feature. Through the experimental failure data analysis of rolling bearing inner ring, the EEMD method is good for fault identification of rolling bearing.

The control system design of voice and motion synchronism teaching group based on computer-controlled is completed. By this control system, 96 motor independent controls and the explanation of the model background can be realized. Furthermore，the purpose of voice and motion synchronism is reached. By software programming, the voice and motion synchronism teaching group can be played in order or played repeatedly.

With the complex and diversified of engineering machinery’s load, the structural response calculation with the incentive of the broadband signal is becoming increasingly important. This paper analyses the adaptability problem on common structural response calculation with wideband signals excitation, and then used specific examples to illustrate the calculation methods problems that may arise in the calculation of broadband stimulus-response. Finally, the way is given to solve it.