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This paper presents a novel signal analysis method by combining ICA and EEMD algorithms, which can be used for decomposition and feature extraction of non-stationary random signals. The features of ICA and EEMD algorithm were analyzed. Simulations verified the feasibility of combining the two algorithms. The ICA and EEMD combined algorithm has good validity and practicality in the impact acceleration...
The projectile’s penetration acceleration signal from the test is a kind of shock acceleration signal, and also is a kind of typical Nonstationary Random Signal(NRS),the duration of the signal is very short and its frequency components are rapidly changed with time. Empirical Mode Decomposition(EMD) is a novel method especially fit for dealing with the NRS ,it can decompose the signal into the limited...
The sensitive mechanism of micro- machined airflow accelerometer is explained. Using the finite element method, the stream field by heat source, with different input accelerations, has been obtained. The numerical results are as follows: Without acceleration, the velocities of airflow at two thermistors are equal, so the current of both thermistors are also equal. The output of the bridge circuit...
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