Application of Chaos Theory in Fault Detection of Vibration Damping Spring
In order to solve the problem that the vibration damping spring of vibrating screen will fail after working for a long time,Based on the analysis of dynamic characteristics and finite element simulation of damping spring,A method is proposed to analyze and detect the fault condition of damping spring by using chaos theory,Firstly vibration experiments are designed to mon-itor the vibration signals of damping spring under different fault conditions.Then the signal differences under different conditions are studied by time-frequency analysis.Finally the chaotic characteristic index of vibration signal is calculated with chaos theory.It is found that the system is in chaotic state when the damping spring fails,and there are obvious differences in the maximum Ly-apunov exponent and correlation dimension under different fault conditions,which can be used in the fault detection research of dumping spring.
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