Abstract
The spectral structure complexity of the Mine Reducer vibration signal was analyzed. The basic theory of the vibration signal frequency demodulation analysis was introduced, The essential mode function which met the single component requirement was obtained by using Empirical mode decomposition in the Hilbert Huang Change. The instantaneous frequency was calculated, The spectrum of the instantaneous frequency was obtained by performing the Fast Fourier Transform, The spectrum analysis was done.
Highlights
As a core part of the mining equipment drive system,Mine Reducer has a higher failure rate, Maintenance is difficult and expensive because the operating conditions of the Mine Reducer is complicated and wicked. [1] Vibration Testing Analysis is still one of the common methods for Mechanical Fault Diagnosis at present. [2] The difficulty of vibration signal analysis and fault diagnosis is increased, because the complex time-varying modulation characteristics of planetary gear box vibration signal. [3]The Mining Equipment operate in a complex wicked and heavy haul environment
Zhang Licai: Frequency Demodulation Analysis of Mine Reducer Vibration Signal recovers the original signal from the modulated wave
The Frequency Demodulation Analysis is done by Selecting the Essential Mode Functions which are first decomposed and the instantaneous frequency fluctuates around the meshing frequency and the multiplier of meshing frequency
Summary
As a core part of the mining equipment drive system,Mine Reducer has a higher failure rate, Maintenance is difficult and expensive because the operating conditions of the Mine Reducer is complicated and wicked. [1] Vibration Testing Analysis is still one of the common methods for Mechanical Fault Diagnosis at present. [2] The difficulty of vibration signal analysis and fault diagnosis is increased, because the complex time-varying modulation characteristics of planetary gear box vibration signal. [3]The Mining Equipment operate in a complex wicked and heavy haul environment. As a core part of the mining equipment drive system,Mine Reducer has a higher failure rate, Maintenance is difficult and expensive because the operating conditions of the Mine Reducer is complicated and wicked. [1] Vibration Testing Analysis is still one of the common methods for Mechanical Fault Diagnosis at present. [2] The difficulty of vibration signal analysis and fault diagnosis is increased, because the complex time-varying modulation characteristics of planetary gear box vibration signal. As the speed change mechanism in the driveline of the mining equipment Reducer, The Mine Reducer has complicated structure. It usually includes multi-speed transmissions with different transmission ratios and planetary gearbox which is Made up of sun gear, planetary gears, ring gear and planet carrier. The signal waveform includes harmonic wave and impact characteristics and includes multiple components modulation and time-varying modulation. [5]
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